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Roman F., PHP Engineer

Last Updated: 5 Mar 2024
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- Experienced Software Engineer with 8 years of commercial experience in demanding environments, focused on producing cutting-edge systems for businesses. - Skilled in infrastructure cost optimization, Kubernetes, and Terraform. - Proficient in PHP, JavaScript, Golang, and various databases such as MySQL, PostgreSQL, and MongoDB. - Extensive experience with Amazon Web Services (AWS) and containerization technologies like Docker. - Strong background in computer science with a Master's degree in Computer Science. - Familiar with Agile and Scrum methodologies, as well as software development practices and SDLC. - Excellent communication skills and fluent in Ukrainian with advanced English proficiency.

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Oleg A., PHP Backend Engineer

Gdansk, Poland
Last Updated: 2 Apr 2024
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- 11+ years of experience in web development and 4 years of experience in the Fintech domain. - Proficient in various PHP frameworks such as YII2, Laravel and Symfony. - Experienced in front-end technologies including HTML5, CSS3, SASS, LESS, and JavaScript. - Strong knowledge of APIs and integrating payment gateways (Crypto, APM, S2S). - Expertise in designing and developing secure web applications. - Familiarity with AWS, Microsoft Azure, and other cloud infrastructure management. - Proven track record of successfully delivering projects on time and within budget, receiving commendations for technical prowess, innovative solutions, and team collaboration. - Location: Poland - Available: ASAP

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Amazon Web Services (AWS)

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Mykhaylo R., DevOps/SRE/Lead System Administrator

Last Updated: 19 Mar 2024
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- Over 20 years in IT with a master's degree in Cybernetics - Proficient in Ansible: Extensive experience in deploying and managing Ansible-driven infrastructure, particularly highlighted in roles as SRE/Architect (Aug 2018 – Present) and Senior DevOps Engineer/Lead Sysadmin (Aug 2020 – May 2021), where Ansible was pivotal in scaling a learning platform from 1,000 to over 100,000 students and in key migration projects. - Expertise in Windows Environments: Demonstrated strong skills in managing Windows environments, especially as an SRE/Architect (Aug 2018 – Present) and CTO (2013 – Mar 2022), involving Windows AD+MSSQL backoffice management and ITIL Service Management framework implementation on Windows platforms. - Versatile IT Roles with Ansible and Windows: Across various roles including IT Service Manager, Senior DevOps Engineer, and CTO, consistently applied Ansible and Windows technologies in large-scale infrastructure projects and day-to-day operations, showing versatility and depth in these areas. - Managing the growth of the learning platform from 1,000+ to 100k+ active students - ITIL v3 Foundations Certificate - More than 5 years of experience in leading ITIL Service Management capability and implementing end-to-end ITIL Service Management framework - Strong experience in using ServiceNow and Jira Service Desk for ITSM - Experienced IT/Telecom Specialist - UNIX and UNIX-Like OS (FreeBSD, Linux, SunOS, MacOS X) background - Over 20 years of Windows/windows server family. From NT4.0 /win3.1 up to Server2019. As well as upgrading Up to 15 years with server HW, and 13 years with storage solutions - Infrastructure problem-solver with a strong view on reliability, performance, and disaster recovery - Fluent English

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Bash   10 yr.

Shell Scripts

Shell Scripts   10 yr.


MySQL   10 yr.



Ansible Playbook

Ansible Playbook

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Serg K., QA Engineer with QA Automation Engineer, Data Quality

Lviv, Ukraine
Last Updated: 4 Jul 2023
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- 5 years with QA automation - Strong testing theory understanding. Defect life cycle and issue workflow understanding, Experience in creating and executing test cases. Reporting - Experience with data and BI tools - DevOps experience with CI/CD, pipelines, Docker, AWS, SQL

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QA Automation

QA Automation   5 yr.





Amazon Web Services (AWS)

Amazon Web Services (AWS)

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Oleksii, Senior JavaScript Full-Stack Engineer

Last Updated: 2 Apr 2024
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- 10+ years of experience in web development, M.Sc in Software Engineering - Mastery of JavaScript and its associated frameworks and libraries, such as React, Angular, and Vue.js for front-end; Node.js, Next.js for back-end and React Native for mobile app development. - Experience with PHP and Cloud infrastructure such as AWS. - Proficiency in using version control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). - Implementing and overseeing testing processes, including unit testing, integration testing, and end-to-end testing. - Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. - Experience conducting assessments and interviews remotely.

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JavaScript   8 yr.


React   8 yr.


TypeScript   5 yr.


Node.js   5 yr.


Next.js   3 yr.

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FAQs about MongoDB Development

How do I hire a MongoDB developer? Arrow

If you urgently need a verified and qualified MongoDB developer, and resources for finding the right candidate are lacking, UPSTAFF is exactly the service you need. We approach the selection of MongoDB developers professionally, tailored precisely to your needs. From placing the call to the completion of your task by a qualified developer, only a few days will pass.

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Undoubtedly, there are dozens, if not hundreds, of specialized services and platforms on the network for finding the right MongoDB engineer. However, only UPSTAFF offers you the service of selecting real qualified professionals almost in real time. With Upstaff, software development is easier than calling a taxi.

How are Upstaff MongoDB developers different? Arrow

AI tools and expert human reviewers in the vetting process are combined with a track record and historically collected feedback from clients and teammates. On average, we save over 50 hours for client teams in interviewing MongoDB candidates for each job position. We are fueled by a passion for technical expertise, drawn from our deep understanding of the industry.

How quickly can I hire MongoDB developers through Upstaff? Arrow

Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched MongoDB 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 MongoDB developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

How does Upstaff vet remote MongoDB engineers? Arrow

Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present MongoDB candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

Soft skills of a MongoDB Developer

Soft skills are essential for MongoDB developers as they work not only with databases but also collaborate with teams, communicate with clients, and solve problems. Here are the soft skills required at different levels of expertise:


  • Effective Communication: Ability to communicate clearly and effectively with team members and stakeholders.
  • Adaptability: Willingness to learn and adapt to new technologies and methodologies.
  • Problem-solving: Capability to analyze and troubleshoot issues to find efficient solutions.
  • Teamwork: Collaboration and cooperation with team members to achieve project goals.
  • Time Management: Efficiently managing time and prioritizing tasks to meet deadlines.


  • Leadership: Ability to take on leadership roles and guide junior members of the team.
  • Mentoring: Assisting and mentoring junior developers to enhance their skills and knowledge.
  • Critical Thinking: Applying logical reasoning and analysis to solve complex problems.
  • Conflict Resolution: Resolving conflicts within the team or with clients in a professional manner.
  • Client Management: Building and maintaining good relationships with clients, understanding their requirements, and providing effective solutions.
  • Attention to Detail: Paying close attention to details to ensure accuracy and quality in work.
  • Collaboration: Working collaboratively with cross-functional teams to achieve project objectives.


  • Strategic Thinking: Ability to think strategically and make informed decisions for the project’s success.
  • Project Management: Managing and overseeing projects, ensuring they are delivered on time and within budget.
  • Communication Skills: Strong communication skills to effectively convey complex technical concepts to non-technical stakeholders.
  • Empathy: Understanding and empathizing with clients and team members to create a positive work environment.
  • Innovation: Bringing innovative ideas and approaches to improve processes and systems.
  • Negotiation: Negotiating contracts, scope, and timelines with clients or vendors.
  • Conflict Management: Resolving conflicts and managing difficult situations with diplomacy and professionalism.
  • Decision-making: Making well-informed decisions based on analysis, experience, and industry knowledge.

Expert/Team Lead

  • Strategic Leadership: Providing strategic direction and guidance to the team for successful project execution.
  • Team Management: Managing and mentoring a team of developers, assigning tasks, and monitoring progress.
  • Client Relationship Management: Building and maintaining long-term relationships with clients, understanding their business needs, and ensuring client satisfaction.
  • Business Acumen: Understanding the business aspects and aligning technical solutions with organizational goals.
  • Conflict Resolution: Resolving conflicts and managing challenging situations within the team or with clients.
  • Decision-making: Making critical decisions that impact the project’s success and align with the company’s objectives.
  • Strategic Planning: Developing and implementing strategic plans for the team’s growth and success.
  • Continuous Learning: Keeping up with the latest trends and technologies in the field of MongoDB development.
  • Technical Expertise: Deep knowledge and expertise in MongoDB and related technologies.
  • Effective Communication: Communicating effectively with stakeholders, including clients, senior management, and team members.
  • Quality Assurance: Ensuring high-quality standards are maintained throughout the development process.

How and where is MongoDB used?

Case NameCase Description
1. Real-Time AnalyticsMongoDB is commonly used for real-time analytics, where large volumes of data from various sources are processed and analyzed in real-time. For example, a retail company can use MongoDB to collect and analyze data from their online store, including customer behavior, sales trends, and inventory management. By leveraging MongoDB’s flexible document model and powerful query capabilities, businesses can gain valuable insights and make data-driven decisions in real-time.
2. Content Management SystemsMongoDB is an ideal choice for content management systems (CMS) that require scalability, flexibility, and high performance. With MongoDB, CMS platforms can easily handle a large number of concurrent users, store and retrieve multimedia content such as images and videos, and support dynamic content updates. MongoDB’s document model allows developers to structure content in a way that suits their application requirements, enabling efficient content storage, retrieval, and indexing.
3. Internet of Things (IoT) ApplicationsMongoDB is well-suited for IoT applications that involve handling and processing large volumes of sensor data. For instance, a smart home system can utilize MongoDB to store sensor readings from various devices such as thermostats, cameras, and motion sensors. MongoDB’s flexible schema and horizontal scalability make it easy to accommodate diverse data types and handle the high write loads generated by IoT devices. Moreover, MongoDB’s geospatial indexes enable efficient querying and analysis of location-based IoT data.
4. Personalization and Recommendation EnginesMongoDB is widely used in applications that require personalization and recommendation features. For example, an e-commerce platform can utilize MongoDB to store and retrieve customer profiles, purchase history, and product catalogs. By leveraging MongoDB’s powerful query capabilities and aggregation framework, businesses can dynamically generate personalized recommendations for their customers based on their browsing and purchase behavior. MongoDB’s ability to handle large and complex data sets enables efficient and scalable recommendation engine implementations.
5. Mobile App BackendMongoDB is a popular choice for building the backend of mobile applications due to its scalability, flexibility, and ease of use. Mobile apps often generate large amounts of user-generated data, such as user profiles, social interactions, and media uploads. MongoDB’s document model allows developers to store and retrieve this data efficiently, while its horizontal scalability ensures that the backend can handle high user loads. Additionally, MongoDB’s built-in support for geospatial indexes enables location-based features in mobile apps, such as mapping and location tracking.
6. Catalog and Inventory ManagementMongoDB is well-suited for catalog and inventory management systems that deal with large volumes of product data. For instance, an e-commerce platform can utilize MongoDB to store product catalogs, track inventory levels, and handle order management. MongoDB’s document model allows for flexible and dynamic product data structures, making it easy to accommodate different types of products and attributes. Its powerful querying capabilities enable efficient filtering, sorting, and searching of products based on various attributes, such as price, category, and availability.

TOP 12 Facts about MongoDB

  • MongoDB is a NoSQL database that provides high performance, scalability, and flexibility for storing and retrieving large volumes of data.
  • It was developed by a company called MongoDB Inc. and was first released in 2009.
  • MongoDB uses a document data model, which means it stores data in a flexible, JSON-like format called BSON (Binary JSON).
  • One of the key features of MongoDB is its ability to scale horizontally, allowing you to distribute your data across multiple servers to handle increased workload and data growth.
  • It supports automatic sharding, which is a technique used to partition data across multiple machines in a cluster to improve performance and scalability.
  • MongoDB provides built-in replication, which ensures high availability and data durability by automatically creating and maintaining copies of data across multiple servers.
  • It offers a rich query language and supports various types of queries, including ad-hoc queries, range queries, and geospatial queries.
  • MongoDB has a flexible schema, allowing you to store data without a predefined structure and easily modify the schema as your application evolves.
  • It provides powerful indexing capabilities, allowing you to create indexes on any field to improve query performance.
  • MongoDB has a robust set of tools and drivers for various programming languages, making it easy to integrate with different applications and frameworks.
  • It has a large and active community of developers, providing support, documentation, and numerous resources to help you get started and troubleshoot any issues.
  • MongoDB is widely used across industries and is particularly popular for building modern web applications, content management systems, and data analytics platforms.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsAssisting senior developers with coding and testing tasks, learning and improving coding skills, debugging and fixing simple issues, participating in code reviews.40,000 – 60,000
Middle2-5 yearsWorking independently on coding tasks, designing and implementing new features, participating in code reviews, mentoring junior developers, collaborating with other teams and stakeholders, contributing to architectural decisions.60,000 – 80,000
Senior5-10 yearsOwning complex projects or modules, providing technical guidance and mentorship to junior and middle developers, leading code reviews and ensuring code quality, collaborating with product and design teams, making critical technical decisions, identifying and resolving performance bottlenecks.80,000 – 120,000
Expert/Team Lead10+ yearsLeading a team of developers, managing project timelines and deliverables, providing technical direction and guidance, driving architectural decisions, collaborating with cross-functional teams, mentoring and coaching team members, resolving conflicts, ensuring high-quality code and performance.120,000 – 200,000+

TOP 10 MongoDB Related Technologies

  • Python

    Python is one of the most popular programming languages for MongoDB software development. It offers a simple and readable syntax, making it easy to work with MongoDB’s document-oriented data model. Python’s extensive ecosystem provides libraries like PyMongo for interacting with MongoDB, making it an excellent choice for building scalable and efficient applications.

  • Node.js

    Node.js is a JavaScript runtime built on Chrome’s V8 engine. It excels in building scalable and high-performance applications, making it a popular choice for MongoDB development. Node.js leverages non-blocking I/O, allowing developers to handle a large number of concurrent requests efficiently. It also offers libraries like the MongoDB driver and Mongoose for seamless integration with MongoDB.

  • Express.js

    Express.js is a minimalist web application framework for Node.js. It provides a robust set of features for building web applications and APIs, making it a popular choice for MongoDB software development. Express.js offers middleware support, routing capabilities, and easy integration with MongoDB through libraries like Mongoose, providing developers with a solid foundation for building scalable and maintainable applications.

  • React

    React is a popular JavaScript library for building user interfaces. With its component-based architecture, React allows developers to build reusable UI components, making it easier to manage complex UIs. React can be seamlessly integrated with MongoDB through backend frameworks like Node.js and Express.js, enabling developers to build modern and responsive applications.

  • Angular

    Angular is a comprehensive JavaScript framework for building web applications. It provides a powerful set of tools for building scalable and maintainable applications, making it a popular choice for MongoDB development. Angular offers features like two-way data binding, dependency injection, and a modular architecture, allowing developers to build robust and efficient applications that seamlessly integrate with MongoDB.

  • Java

    Java is a widely adopted programming language known for its versatility and performance. It has a rich ecosystem of libraries and frameworks, making it a popular choice for MongoDB software development. With libraries like the MongoDB Java Driver, developers can easily interact with MongoDB and leverage its features in Java applications.

  • Spring Framework

    The Spring Framework is a widely used Java framework for building enterprise-level applications. It provides a comprehensive set of features, including dependency injection, data access, and web development capabilities. Spring Data MongoDB, an extension of the Spring Framework, offers seamless integration with MongoDB, allowing developers to leverage MongoDB’s document-oriented capabilities in their Spring-based applications.

What are top MongoDB instruments and tools?

  • MongoDB Compass: MongoDB Compass is a GUI tool for MongoDB that allows users to easily explore and manipulate their MongoDB databases. It provides a graphical interface to visualize and interact with the data, making it easier for developers and administrators to work with MongoDB. Compass is known for its intuitive user interface and powerful features such as query optimization, schema analysis, and data visualization. It was first released in 2015 and has since become one of the most popular MongoDB tools among developers.
  • MongoDB Atlas: MongoDB Atlas is a fully managed cloud database service provided by MongoDB. It allows users to easily deploy, manage, and scale their MongoDB databases in the cloud. Atlas provides a range of features including automated backups, monitoring, and security controls. It was launched in 2016 and has gained significant popularity due to its ease of use and scalability. Many organizations, from startups to enterprises, rely on MongoDB Atlas for their database needs.
  • MongoDB Stitch: MongoDB Stitch is a serverless platform provided by MongoDB that simplifies the development of backend services for MongoDB applications. It allows developers to build serverless functions, trigger database actions, and integrate with external services without managing infrastructure. Stitch was introduced in 2018 and has quickly become a popular choice for developers looking to build serverless applications with MongoDB.
  • MongoDB Ops Manager: MongoDB Ops Manager is a tool that provides a comprehensive management and monitoring solution for MongoDB deployments. It allows administrators to deploy, monitor, and scale MongoDB clusters with ease. Ops Manager offers features such as automated backups, performance monitoring, and alerting. It has been available since 2012 and is widely used by organizations to ensure the smooth operation of their MongoDB databases.
  • MongoDB BI Connector: MongoDB BI Connector is a tool that enables SQL-based access to MongoDB data. It allows users to connect popular BI tools such as Tableau and Power BI to MongoDB and perform ad-hoc queries using SQL. The BI Connector was introduced in 2016 and has been widely adopted by organizations that want to leverage their existing BI infrastructure with MongoDB.
  • MongoDB Charts: MongoDB Charts is a data visualization tool that allows users to create and share interactive charts and dashboards using MongoDB data. It provides a drag-and-drop interface to easily create visualizations without writing code. MongoDB Charts was released in 2019 and has become a popular tool for data analysts and business users who want to gain insights from their MongoDB data.

Cases when MongoDB does not work

  1. When the dataset size exceeds the available memory: MongoDB relies heavily on memory-mapped files to provide efficient data access. However, if the dataset size grows beyond the available memory, it can lead to frequent page faults and reduced performance. In such cases, it is recommended to either scale up the hardware resources or shard the dataset across multiple servers.
  2. When there is a need for complex joins and transactions: MongoDB is a NoSQL database that prioritizes scalability and performance over strict consistency. As a result, it does not support complex join operations or multi-document transactions in the same way as traditional relational databases. While MongoDB provides some mechanisms to handle relationships between documents, if your use case heavily relies on complex joins or ACID transactions, a relational database might be a better fit.
  3. When there is a requirement for real-time analytics: MongoDB is designed for operational data storage and retrieval rather than real-time analytics. Although it provides aggregation framework and map-reduce capabilities, it may not offer the same level of performance and flexibility as dedicated analytics databases like Apache Spark or Apache Druid. If your application requires extensive real-time analytics, it might be worth considering specialized analytics tools alongside MongoDB.
  4. When the data schema is likely to change frequently: MongoDB’s flexible schema-less nature allows for easy changes to the data structure. However, if the data schema is expected to evolve frequently and unpredictably, it can introduce challenges in maintaining data integrity and consistency. In such cases, a relational database with a fixed schema and strong data validation might be a more suitable choice.
  5. When strong ACID guarantees are required: MongoDB provides a level of data consistency through replica sets and write acknowledgments. However, it does not offer full ACID (Atomicity, Consistency, Isolation, Durability) guarantees across multiple operations. If your application demands strict ACID compliance, especially for complex transactions involving multiple documents, a traditional relational database might be a better choice.

Pros & cons of MongoDB

9 Pros of MongoDB

  • High Scalability: MongoDB is designed to handle large amounts of data and can scale horizontally by adding more servers to distribute the workload.
  • Flexible Data Model: MongoDB uses a flexible schema, allowing you to store and update data without the need for predefined schemas or migrations.
  • Document-Oriented: MongoDB stores data in flexible JSON-like documents, making it easy to work with for developers.
  • Easy Replication and High Availability: MongoDB supports automatic replication, allowing you to create replicas of your data for fault tolerance and high availability.
  • Fast Querying: MongoDB uses indexing and a powerful query language to efficiently retrieve data, making it suitable for applications that require fast data access.
  • Horizontal Scaling: MongoDB can distribute data across multiple servers, allowing for seamless scaling as your data grows.
  • Automatic Sharding: MongoDB can automatically partition data across multiple servers, making it easy to scale horizontally without manual data sharding.
  • Aggregation Framework: MongoDB provides a powerful aggregation framework that allows you to perform complex data analysis and aggregation operations.
  • Community Support: MongoDB has a large and active community of developers who contribute libraries, tools, and resources to help you get started and solve problems.

9 Cons of MongoDB

  • Memory Usage: MongoDB can consume a significant amount of memory, especially if you have large indexes or frequently update data.
  • No ACID Transactions: MongoDB does not support ACID transactions across multiple documents or collections, which can be a challenge for certain use cases.
  • No Joins: MongoDB does not support traditional SQL-style joins, requiring you to denormalize your data or perform multiple queries to achieve the same result.
  • Data Size Limit: MongoDB has a maximum document size limit of 16MB, which can be a constraint for certain types of data.
  • Indexing Overhead: Creating and maintaining indexes in MongoDB can introduce additional overhead and impact write performance.
  • Query Performance: While MongoDB can provide fast querying for certain use cases, complex queries or large data sets may experience performance degradation.
  • Learning Curve: Switching from a relational database to MongoDB may require a learning curve for developers who are not familiar with NoSQL concepts and query syntax.
  • Not Suitable for Complex Transactions: MongoDB is not ideal for applications that heavily rely on complex transactions and require strict data consistency.
  • Less Mature Ecosystem: Compared to traditional relational databases, the ecosystem of tools and libraries for MongoDB is still evolving and may not be as comprehensive.

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