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Henry A., Software Engineer with Python and Data Analytical Skills

Last Updated: 14 Mar 2024
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- 8+ years experience working with Python; - 5 years of experience as a BI and 4 years of experience with Tableau; - 8 years of experience with various data sets (ETL, Data Engineer, Data Quality Engineer); - 3 years of experience with Amazon Web Services (AWS), Google Cloud Platform (GCP); - Data Analytics/Engineering with Cloud Service Providers (AWS, GCP) - Experience working with MySQL, SQL, and PostgreSQL; - Deep abilities working with Kubernetes (K8s); - Hands-on scripting experience with Python; Microsoft Power BI, Tableau, Sisense, CI/CD principles, Data Validation, Data QA, SQL, Pipelines, ETL, and Automated web scraping. - Pet web3 projects (solidity, wallet integration) - Upper-intermediate English

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Python   8.5 yr.

Data Analysis

Data Analysis   6 yr.

Google Cloud Platform (GCP)

Google Cloud Platform (GCP)   4 yr.


Tableau   4 yr.

Microsoft Power BI

Microsoft Power BI   4 yr.

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Yevhenii D, Back End Developer

Uzhgorod, Ukraine
Last Updated: 29 Nov 2023

Highly experienced backend developer with over five years of experience specializing in commercial application development with Node.js, Ruby on Rails, and front-end technologies including React.js. Holds a Master's Degree in Software Engineering from Uzhgorod National University. Proficient with a suite of databases and services such as PostgreSQL, MySQL, MongoDB, ElasticSearch, RabbitMQ and Redis, with a strong command of API integration (Stripe, PayPal, Twilio). Skilled in DevOps practices and cloud platforms like AWS, Google Cloud, and Heroku. Well-versed in multiple programming languages and frameworks, demonstrating significant technical expertise in JavaScript/TypeScript, Node.js, Nest.js, and Ruby. Successfully applied a deep understanding of software engineering principles, SDLC, and development patterns to a variety of complex projects across different domains.

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Ruby on Rails (RoR)

Ruby on Rails (RoR)

Ant Design

Ant Design





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Andrey D., Senior Ruby on Rails Software Engineer

Minsk, Belarus
Last Updated: 4 Jul 2023

- 6 years of commercial experience with Ruby on Rails ecosystem - Team Lead / Full stack (Ruby, React) software engineer - Cloud Services (AWS, Azure, Heroku) - Upper-intermediate English - Available ASAP

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Ruby   5 yr.

Ruby on Rails (RoR)

Ruby on Rails (RoR)   4 yr.

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Sergey, Senior Salesforce Developer

Last Updated: 4 Jul 2023

- 5 years experience in Salesforce - Top skills are Apex, Salesforce Lightning (Aura & Web components), and Force.com platform - Upper-intermediate English - Available ASAP

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Douglas E., Rust Engineer

Last Updated: 4 Jul 2023

- 3 years of experience with Rust - Efficiently deployed web application powered by rust backend. - Built innovative microservices and Web Services using Web Actix and diesel. - Engineered and maintained modern web assembly application using Rust . - Developed web application using sqlx and Web Actix. - Strong front-end interaction skills with Solidity transactions. - Highly qualified knowledge of working with Metamask wallet, transactions, and fees for them. - Upper-Intermediate English. - Available ASAP.

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Rust   3 yr.



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Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched Heroku Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new Heroku developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

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Table of Contents

Pros & cons of Heroku

8 Pros of Heroku

  • Scalability: Heroku allows you to easily scale your application up or down based on your needs. With just a few clicks or commands, you can increase or decrease the number of dynos (containers) running your app.
  • Easy Deployment: Heroku simplifies the deployment process by providing a seamless integration with popular version control systems like Git. You can easily push your code to Heroku and have your app up and running in no time.
  • Automatic Scaling: Heroku offers automatic scaling that adjusts the number of dynos based on the traffic your app receives. This ensures that your app can handle sudden spikes in traffic without any manual intervention.
  • Managed Infrastructure: Heroku takes care of managing the underlying infrastructure and server maintenance, allowing developers to focus on building and deploying their applications.
  • Add-ons and Integrations: Heroku offers a wide range of add-ons and integrations that help extend the functionality of your application. From databases to monitoring tools, you can easily integrate third-party services into your Heroku app.
  • Developer Experience: Heroku provides a user-friendly interface and a command-line interface (CLI) that make it easy to manage and monitor your applications. The platform also supports multiple programming languages and frameworks.
  • Continuous Integration and Deployment: Heroku integrates seamlessly with popular CI/CD (Continuous Integration/Continuous Deployment) tools like Jenkins and Travis CI. This allows you to automate the build, test, and deployment process for your application.
  • Community and Support: Heroku has a large and active community of developers who contribute to open-source projects, share knowledge, and provide support. The platform also offers documentation, guides, and support resources to help developers get started and troubleshoot any issues they may encounter.

8 Cons of Heroku

  • Price: While Heroku offers a free tier, the pricing for higher resource levels can be relatively expensive compared to other hosting options.
  • Platform Limitations: Heroku has certain limitations and restrictions, such as limited control over the underlying infrastructure and the inability to install custom software or libraries.
  • Performance: Depending on the complexity and requirements of your application, Heroku may not provide the same level of performance as dedicated servers or cloud platforms.
  • Data Transfer Costs: Heroku charges for data transfer between dynos and any external services, which can add up if your application makes frequent API calls or relies heavily on data transfer.
  • Dependency on Heroku: Once your application is built and deployed on Heroku, it can be challenging to migrate to a different platform if desired. This can result in a vendor lock-in situation.
  • Limited Database Options: Heroku offers a limited selection of databases, which may not meet the specific needs of your application. You may need to consider alternative solutions if your application requires a different database technology.
  • Security Concerns: As with any cloud platform, there may be concerns about data security and compliance. It’s important to review Heroku’s security measures and ensure they align with your requirements.
  • Customization Limitations: Heroku’s platform-as-a-service (PaaS) model limits the level of customization you can achieve compared to infrastructure-as-a-service (IaaS) providers. If your application requires extensive customization, Heroku may not be the best fit.

Soft skills of a Heroku Developer

Soft skills are essential for a Heroku Developer as they contribute to effective collaboration, communication, and problem-solving abilities. Here are the soft skills required at different levels of expertise:


  • Adaptability: Ability to quickly learn and adapt to new technologies and processes.
  • Teamwork: Collaboration and cooperation with team members to achieve project goals.
  • Time Management: Efficiently managing tasks and meeting deadlines.
  • Attention to Detail: Paying close attention to small details to ensure quality in development.
  • Communication: Clear and effective communication with team members and stakeholders.


  • Leadership: Ability to take ownership of tasks and guide junior team members.
  • Problem Solving: Analytical thinking and finding innovative solutions to complex issues.
  • Critical Thinking: Evaluating information and making informed decisions.
  • Conflict Resolution: Effectively resolving conflicts within the team or with stakeholders.
  • Client Management: Building positive relationships with clients and understanding their needs.
  • Presentation Skills: Delivering clear and engaging presentations to stakeholders.
  • Time Management: Efficiently managing multiple tasks and prioritizing work.


  • Mentoring: Guiding and mentoring junior and middle-level developers.
  • Strategic Thinking: Aligning development efforts with long-term business goals.
  • Project Management: Overseeing project timelines, resources, and deliverables.
  • Collaboration: Building effective relationships with cross-functional teams.
  • Decision Making: Making sound decisions based on analysis and experience.
  • Adaptability: Navigating through changing requirements and technologies.
  • Empathy: Understanding and considering the perspectives and needs of others.
  • Innovation: Identifying opportunities for process improvement and innovation.

Expert/Team Lead

  • Strategic Planning: Developing long-term strategies and roadmaps for projects.
  • Team Management: Leading and managing a team of developers.
  • Influence: Persuading and inspiring others to adopt new ideas or approaches.
  • Business Acumen: Understanding the business context and making informed decisions.
  • Risk Management: Identifying and mitigating potential risks in project development.
  • Negotiation: Negotiating contracts, budgets, and timelines with clients or stakeholders.
  • Continuous Learning: Staying updated with the latest industry trends and technologies.
  • Problem Solving: Resolving complex technical and business challenges.
  • Communication: Effectively communicating with stakeholders at all levels.
  • Strategic Partnerships: Building and maintaining partnerships with external organizations.
  • Quality Assurance: Ensuring high-quality standards in development and delivery.

TOP 12 Tech facts and history of creation and versions about Heroku Development

  • Heroku was founded in 2007 by Orion Henry, James Lindenbaum, and Adam Wiggins as a cloud platform for developers.
  • It is based on the concept of Platform as a Service (PaaS), which allows developers to focus on building applications without worrying about infrastructure management.
  • Heroku was initially developed using Ruby on Rails, a popular web application framework, and has since expanded to support multiple programming languages such as Java, Node.js, Python, and more.
  • In 2010, Heroku was acquired by Salesforce, a leading cloud-based customer relationship management (CRM) company, which further boosted its growth and development.
  • One of the groundbreaking features of Heroku is its “dyno” architecture, which allows developers to scale their applications easily by adding or reducing dynos (virtual containers) based on the application’s needs.
  • Heroku pioneered the use of “buildpacks,” which are scripts that automatically configure the runtime environment for different programming languages. This simplifies the deployment process for developers.
  • Heroku provides seamless integration with popular version control systems like Git, allowing developers to deploy their applications directly from their code repositories.
  • In 2011, Heroku introduced the “Cedar” stack, which replaced the previous infrastructure and brought significant performance improvements and support for additional programming languages.
  • Heroku’s add-ons marketplace offers a wide range of third-party services and tools that developers can easily integrate into their applications, such as databases, caching solutions, monitoring tools, and more.
  • Heroku has a strong focus on developer experience and provides extensive documentation, tutorials, and a vibrant community for support and collaboration.
  • In 2017, Heroku launched the “Private Spaces” feature, which allows enterprises to deploy their applications in isolated environments with dedicated resources for increased security and scalability.
  • Heroku continuously evolves and releases updates to its platform, ensuring compatibility with the latest technologies and frameworks, and providing developers with new features and improvements.

TOP 10 Heroku Related Technologies

  • Languages: Python

    Python is one of the most popular programming languages for Heroku software development. It offers a simple and readable syntax, extensive libraries, and a large community support. Python is widely used for web development, data analysis, machine learning, and more.

  • Frameworks: Django

    Django is a high-level Python web framework that follows the Model-View-Controller (MVC) architectural pattern. It provides a robust set of tools and features for building scalable and secure web applications. Django’s emphasis on reusability and rapid development makes it a preferred choice for Heroku software development.

  • Database: PostgreSQL

    PostgreSQL is a powerful and open-source relational database management system. It offers advanced features such as ACID compliance, robustness, and scalability. Heroku provides built-in support for PostgreSQL, making it an excellent choice for storing and managing data in Heroku applications.

  • Containerization: Docker

    Docker is a containerization platform that allows developers to package applications and their dependencies into lightweight and portable containers. Heroku supports Docker containers, enabling easy deployment and scaling of applications. Docker’s containerization technology improves application isolation, reproducibility, and deployment efficiency.

  • Version Control: Git

    Git is a distributed version control system widely used in the software development industry. It allows developers to track changes in code, collaborate with team members, and easily manage code repositories. Heroku seamlessly integrates with Git, making it convenient to deploy and manage applications using version control.

  • Continuous Integration: Travis CI

    Travis CI is a popular continuous integration platform that automates the process of building, testing, and deploying software applications. It integrates well with Heroku, enabling developers to automate their software development workflow and ensure the quality and stability of their applications.

  • Logging and Monitoring: Papertrail

    Papertrail is a cloud-based log management and monitoring solution. It allows developers to centralize logs from different sources, search and analyze log data, and set up alerts for critical events. Integrating Papertrail with Heroku provides valuable insights into application performance, debug potential issues, and ensure smooth operation.

How and where is Heroku used?

Case NameCase Description
1. SalesforceHeroku is used by Salesforce to host and deploy their customer-facing applications. By leveraging Heroku’s platform as a service (PaaS) capabilities, Salesforce can easily scale their applications to meet the growing needs of their user base. Heroku also provides seamless integration with other Salesforce products, allowing for a unified and efficient development and deployment process.
2. TwitchTwitch, the popular live streaming platform for gamers, relies on Heroku to handle the massive scale of their infrastructure. With millions of concurrent viewers and streamers, Heroku enables Twitch to seamlessly manage their application and ensure smooth streaming experiences for their users. Heroku’s auto-scaling capabilities and robust infrastructure make it an ideal choice for high-traffic platforms like Twitch.
3. MailChimpMailChimp, a leading email marketing platform, utilizes Heroku for its backend infrastructure. Heroku’s scalability and reliability allow MailChimp to handle the enormous volume of emails sent by their users. With Heroku, MailChimp can efficiently process and deliver emails while maintaining high deliverability rates. This helps MailChimp maintain its reputation as a trusted email marketing service.
4. LyftLyft, the popular ride-sharing service, relies on Heroku for its backend infrastructure and application deployment. Heroku’s ease of use and scalability make it an ideal choice for a rapidly growing platform like Lyft. Heroku’s robust infrastructure ensures that Lyft can handle the high demand for rides and provide a seamless experience for their users.
5. Financial AppsMany financial institutions and fintech startups use Heroku to develop and deploy their applications. Heroku’s security features and compliance certifications make it a trusted choice for handling sensitive financial data. Additionally, Heroku’s scalability and ease of use allow these apps to handle high volumes of transactions and provide real-time updates to users.
6. Education PlatformsHeroku is widely used in the education sector for developing and deploying online learning platforms. These platforms require scalability to accommodate a large number of students and seamless integration with various educational tools. Heroku’s PaaS capabilities make it an excellent choice for building and scaling these platforms, enabling educators to deliver high-quality online education to students worldwide.
7. Content Management SystemsHeroku is utilized by content management systems (CMS) to host and manage websites and web applications. Heroku’s ease of deployment and scalability allow CMS platforms to handle high traffic and provide a reliable experience for website visitors. Additionally, Heroku’s integration capabilities make it easy to connect with other services and tools commonly used in CMS environments.
8. IoT ApplicationsHeroku is often used to develop and deploy Internet of Things (IoT) applications. Heroku’s platform provides the necessary infrastructure for IoT devices to connect, transmit data, and interact with other systems or applications. Heroku’s scalability and real-time capabilities make it an ideal choice for building IoT solutions that require continuous data processing and analysis.
9. Event Management PlatformsEvent management platforms rely on Heroku to handle the complexities of organizing and managing large-scale events. Heroku’s scalability allows these platforms to handle high volumes of attendee registrations, ticket sales, and event updates. With Heroku, event organizers can ensure a smooth and seamless experience for attendees while managing the backend infrastructure efficiently.
10. E-commerce WebsitesHeroku is widely used by e-commerce websites to host and manage their online stores. Heroku’s scalability and reliability make it an ideal choice for handling high traffic and processing numerous transactions. Additionally, Heroku’s integration capabilities enable e-commerce platforms to seamlessly connect with payment gateways, inventory management systems, and other essential tools for running an online store.

Hard skills of a Heroku Developer

Hard skills of a Heroku Developer:


  • Heroku Deployment: Experience deploying applications to Heroku using the Heroku CLI or Git.
  • Heroku Dynos: Understanding of Heroku Dynos and how to scale them based on application needs.
  • Heroku Postgres: Knowledge of managing and configuring Heroku Postgres databases.
  • Heroku CLI: Proficiency in using the Heroku Command Line Interface for managing applications and resources.
  • Heroku Add-ons: Familiarity with Heroku Add-ons and how to integrate them into applications.


  • Heroku Pipelines: Experience setting up and managing deployment pipelines in Heroku.
  • Heroku Data Management: Proficiency in managing and migrating data in Heroku databases.
  • Heroku SSL Certificates: Knowledge of configuring and managing SSL certificates for secure communication.
  • Heroku Scaling: Understanding how to scale Heroku applications horizontally and vertically.
  • Heroku Performance Monitoring: Familiarity with monitoring and optimizing application performance on Heroku.
  • Heroku CI/CD: Experience setting up continuous integration and continuous deployment workflows on Heroku.
  • Heroku Redis: Knowledge of using and configuring Heroku Redis for caching and session management.


  • Heroku Private Spaces: Proficiency in setting up and managing Heroku Private Spaces for enhanced security and isolation.
  • Heroku Data Protection: Understanding of data protection mechanisms in Heroku, such as encryption and backups.
  • Heroku Connect: Experience integrating Salesforce data with Heroku applications using Heroku Connect.
  • Heroku Enterprise: Knowledge of Heroku Enterprise features and best practices for large-scale deployments.
  • Heroku Dyno Autoscaling: Expertise in configuring automatic scaling of Heroku dynos based on application metrics.
  • Heroku Performance Tuning: Ability to optimize application performance on Heroku by fine-tuning various settings.
  • Heroku Review Apps: Experience setting up and utilizing Heroku Review Apps for collaborative code review.
  • Heroku Platform API: Familiarity with the Heroku Platform API for automating application management tasks.

Expert/Team Lead

  • Heroku Enterprise Architecture: Proficiency in designing and implementing enterprise-grade architectures on Heroku.
  • Heroku Data Governance: Understanding of data governance principles and implementing them in Heroku environments.
  • Heroku Custom Buildpacks: Experience creating and using custom buildpacks for advanced application customization.
  • Heroku Add-on Development: Knowledge of developing custom Heroku add-ons to extend platform functionality.
  • Heroku Compliance: Expertise in ensuring compliance with industry and regulatory standards on the Heroku platform.
  • Heroku Infrastructure Automation: Ability to automate infrastructure provisioning and management on Heroku.
  • Heroku Multi-Region Deployment: Experience deploying applications across multiple regions on the Heroku platform.
  • Heroku Disaster Recovery: Proficiency in designing and implementing disaster recovery strategies for Heroku applications.
  • Heroku Team Collaboration: Knowledge of best practices for team collaboration and project management on Heroku.
  • Heroku Cost Optimization: Expertise in optimizing costs and resource utilization on the Heroku platform.
  • Heroku Security: Understanding of security best practices and implementing them to secure Heroku applications.

Cases when Heroku does not work

  1. Insufficient Resources: Heroku provides a certain amount of resources for each application, such as CPU, memory, and storage. In cases where your application requires more resources than what Heroku offers in its free or paid plans, it may lead to performance issues or even application crashes. This can occur if your application experiences a sudden surge in traffic or requires heavy computational tasks.
  2. Long Running Processes: Heroku is designed for running web applications and background tasks that are short-lived and respond quickly to requests. If your application requires long-running processes, such as heavy data processing or continuous background jobs, it may not be a suitable fit for Heroku. Heroku has certain limitations on the maximum allowed execution time for processes, and exceeding these limits may cause your processes to be terminated abruptly.
  3. Strict File System: Heroku uses an ephemeral file system, meaning that any changes made to the file system during the execution of your application will not persist beyond the lifetime of the dyno. This can be problematic if your application relies heavily on writing or reading files from the file system, as those changes will be lost each time the dyno restarts. Although Heroku provides add-ons and external storage options to overcome this limitation, it adds complexity and may incur additional costs.
  4. Database Limitations: Heroku offers various database options, such as Heroku Postgres, but these databases have certain limitations compared to dedicated database servers. For example, the free tier of Heroku Postgres has limited storage and performance capabilities, which may not be sufficient for applications with large data volumes or high transaction rates. Additionally, certain advanced database features or configurations may not be available on Heroku, limiting your flexibility in database management.
  5. Network Restrictions: Heroku enforces certain network restrictions, such as outbound request limitations and restrictions on certain ports and protocols. If your application requires unrestricted network access or specific network configurations, it may not be possible to achieve them on Heroku’s platform. This can be a concern for applications that rely on specialized networking setups or need to communicate with external systems that are not compatible with Heroku’s network restrictions.

What are top Heroku instruments and tools?

  • Heroku CLI: The Heroku Command Line Interface (CLI) is a powerful tool that allows developers to manage and interact with their Heroku applications from the command line. It provides a wide range of commands for deploying, scaling, and monitoring applications, as well as managing add-ons and accessing logs. The Heroku CLI has been around since 2009 and is widely used by developers to streamline their workflow and automate common tasks.
  • Heroku Dashboard: The Heroku Dashboard is a web-based interface that provides a graphical user interface (GUI) for managing Heroku applications. It allows users to easily deploy applications, configure environment variables, scale dynos, and monitor various metrics such as CPU usage and memory consumption. The Heroku Dashboard is particularly useful for developers who prefer a visual interface over the command line.
  • Heroku Postgres: Heroku Postgres is a fully-managed relational database service provided by Heroku. It is based on PostgreSQL and offers high performance, scalability, and reliability. Heroku Postgres provides features such as continuous protection, rollback, and automated health checks. It has been widely adopted by developers for building and deploying applications that require a robust and scalable database solution.
  • Heroku Redis: Heroku Redis is a fully-managed in-memory data store service provided by Heroku. It is based on Redis and offers high performance and low latency for caching and data storage. Heroku Redis provides features such as data persistence, replication, and automatic failover. It is commonly used by developers to speed up application response times and improve overall performance.
  • Heroku Connect: Heroku Connect is a data synchronization service provided by Heroku. It allows developers to seamlessly integrate data between Salesforce and Heroku applications. Heroku Connect provides real-time synchronization, bidirectional data flow, and automatic conflict resolution. It has gained popularity among developers who need to integrate their Salesforce data with custom Heroku applications.
  • Heroku Scheduler: Heroku Scheduler is a task scheduling add-on provided by Heroku. It allows developers to automate recurring tasks such as database backups, data imports, and periodic jobs. Heroku Scheduler supports various scheduling options and provides a simple interface for managing scheduled tasks. It is widely used by developers to automate routine operations and improve productivity.
  • Heroku Metrics: Heroku Metrics is a built-in monitoring and performance analysis tool provided by Heroku. It allows developers to track key metrics such as response time, throughput, and error rates for their applications. Heroku Metrics provides real-time data visualization, alerting, and historical analysis. It helps developers identify performance bottlenecks and optimize their applications for better scalability and reliability.
  • Heroku Add-ons: Heroku Add-ons are pre-integrated third-party services that can be easily provisioned and attached to Heroku applications. They offer a wide range of functionalities such as logging, monitoring, caching, and analytics. Some popular Heroku Add-ons include Papertrail for centralized logging, New Relic for application performance monitoring, and SendGrid for email delivery. Heroku Add-ons provide developers with a convenient way to enhance their applications with additional features and services.
  • Heroku Private Spaces: Heroku Private Spaces is a feature that allows developers to deploy and manage their applications in isolated, secure environments. It provides enhanced network security, isolated resources, and fine-grained access controls. Heroku Private Spaces is particularly suited for applications that require strict data isolation and compliance with industry regulations. It has been widely adopted by organizations that prioritize security and data privacy.

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