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Asad S., AWS Data Engineer

Pakistan
Last Updated: 4 Jul 2023

- More than 8 years of Data Engineering experience in the Banking and Health sector. - Worked on Datawarehousing and ETL pipeline projects using AWS Glue, Databrew, Lambda, Fivetran, Kinesis, Snowflake, Redshift, and Quicksight. - Recent project involves loading data into Snowflake using Fivetran connector and automation of pipeline using Lambda and Eventbridge. - Performed Cloud Data Migrations and automation of ETL pipeline design and implementations. - Fluent English - Available from 18.08.2022

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Oleksii, Senior JavaScript Full-Stack Engineer

Ukraine
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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AWS Lambda

AWS Lambda

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JavaScript   8 yr.

React

React   8 yr.

TypeScript

TypeScript   5 yr.

Node.js

Node.js   5 yr.

Next.js

Next.js   3 yr.

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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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AWS Lambda

AWS Lambda

QA Automation

QA Automation   5 yr.

Python

Python

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CI/CD

Amazon Web Services (AWS)

Amazon Web Services (AWS)

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Mohamed K., XSLT Developer

Cairo, Egypt
Last Updated: 15 Mar 2024
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- 12+ years of experience in IT - 10+ years of experience with XSLT - Writing, testing and maintaining the XSLT code that applies some filtration and conditions on XML - Converting IATA NDC Standard XML Content format into IATA NDC Standard XML format using XSLT - Familiar with many processing engines like Saxon (Java) - libxslt (C) - Python’s package - Upper-intermediate English - Available ASAP

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AWS Lambda

AWS Lambda

Python

Python

XSLT

XSLT   10 yr.

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Polina, Full-stack Software Engineer (Node + React)

Belarus
Last Updated: 4 Jul 2023

- 3+ years of experience in the IT industry - Core technology stack is AWS, Node.js, Python - Actively working with serverless architecture AWS (Lambda, Cognito, VPC, Security Group, EC2, RDS, API Gateway, CloudFormation, SES, SNS, S3, Amazon Timestream, IAM, LightSail) - Intermediate English - Available ASAP

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AWS Lambda

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Node.js

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React

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Table of Contents

Soft skills of a AWS Lambda Developer

Soft skills are crucial for AWS Lambda Developers as they not only need technical expertise but also effective communication and collaboration abilities. Here are the soft skills required at different levels of experience:

Junior

  • Problem-solving: Ability to analyze and solve problems efficiently to deliver effective solutions.
  • Adaptability: Willingness to learn and adapt to new technologies and frameworks.
  • Attention to detail: Being meticulous in code development and ensuring accuracy.
  • Time management: Ability to prioritize tasks and meet deadlines.
  • Teamwork: Collaborating effectively with team members to achieve project goals.

Middle

  • Leadership: Demonstrating leadership qualities and guiding junior developers.
  • Critical thinking: Analyzing complex situations and making informed decisions.
  • Communication: Expressing ideas and requirements clearly to stakeholders.
  • Mentoring: Assisting junior developers and sharing knowledge.
  • Conflict resolution: Resolving conflicts and maintaining a positive work environment.
  • Organizational skills: Managing multiple tasks and projects efficiently.
  • Customer focus: Understanding and meeting customer needs and expectations.

Senior

  • Innovation: Identifying and implementing innovative solutions for complex problems.
  • Strategic thinking: Developing long-term plans and strategies for project success.
  • Decision-making: Making informed decisions based on thorough analysis.
  • Negotiation: Negotiating with stakeholders to reach mutually beneficial agreements.
  • Empathy: Understanding and empathizing with team members and stakeholders.
  • Project management: Leading and managing projects effectively.
  • Presentation skills: Delivering clear and impactful presentations.
  • Continuous learning: Keeping up with the latest industry trends and technologies.

Expert/Team Lead

  • Visionary leadership: Setting a clear vision and inspiring the team to achieve it.
  • Strategic planning: Developing strategies to drive business growth and success.
  • Collaboration: Building strong relationships with cross-functional teams.
  • Influencing skills: Influencing stakeholders and decision-makers.
  • Conflict management: Resolving conflicts and promoting a harmonious work environment.
  • Technical expertise: Deep understanding of AWS Lambda and related technologies.
  • Business acumen: Understanding business needs and aligning technology solutions.
  • Team management: Mentoring and developing team members for career growth.
  • Risk management: Identifying and mitigating risks in project execution.
  • Continuous improvement: Driving continuous improvement initiatives within the team.
  • Client management: Building and maintaining strong client relationships.

TOP 10 AWS Lambda Related Technologies

  • Python

    Python is the most popular language for AWS Lambda development. It is known for its simplicity, readability, and extensive library support. With Python, developers can quickly write code and leverage a wide range of pre-built modules for various tasks.

  • Node.js

    Node.js is another widely used language for AWS Lambda development. It is based on JavaScript and offers a non-blocking, event-driven architecture, making it highly efficient for handling concurrent requests. Node.js is particularly popular for building real-time applications and APIs.

  • Java

    Java is a robust and versatile language that is often chosen for enterprise-grade AWS Lambda development. It provides strong static typing, excellent performance, and extensive tooling support. Java is suitable for large-scale applications and integrations.

  • C# (.NET Core)

    C# with .NET Core is a popular choice for AWS Lambda development, especially among developers with a background in Microsoft technologies. It offers a powerful programming model, seamless integration with other Microsoft products, and excellent performance.

  • Go

    Go, also known as Golang, is a modern programming language that is gaining popularity for AWS Lambda development. It is designed for efficiency, scalability, and simplicity. Go’s built-in concurrency support makes it ideal for building highly concurrent serverless applications.

  • Ruby

    Ruby is a dynamic, object-oriented language known for its simplicity and productivity. It has a strong community and offers a wide range of frameworks and libraries for AWS Lambda development. Ruby is often chosen for building web applications and scripting tasks.

  • PowerShell

    PowerShell is a versatile scripting language developed by Microsoft. It is particularly popular among Windows system administrators and DevOps professionals. PowerShell can be used for AWS Lambda development, especially for tasks involving automation and infrastructure management.

TOP 14 Facts about AWS Lambda

  • AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). It allows developers to run their code without provisioning or managing servers.
  • With AWS Lambda, developers can write their code in popular programming languages such as Python, Node.js, Java, C#, and Go.
  • Lambda functions can be triggered by various events, including changes to data in Amazon S3 buckets, updates to DynamoDB tables, or events from AWS services like Amazon SNS or Amazon Kinesis.
  • One of the key features of Lambda is its ability to automatically scale to handle incoming requests. It can handle a few requests per day or millions of requests per second, depending on the workload.
  • AWS Lambda provides a pay-per-use pricing model, where users are only charged for the compute time consumed by their functions. There are no upfront costs or long-term commitments.
  • Lambda functions have a maximum execution time limit of 15 minutes, which is configurable. If a function exceeds this limit, it will be terminated by Lambda.
  • AWS Lambda integrates seamlessly with other AWS services, allowing developers to build complex applications using a combination of serverless and traditional architectures.
  • Developers can use AWS Lambda to build various types of applications, including web and mobile backends, data processing pipelines, real-time file processing, and IoT backend services.
  • Lambda functions can be deployed using the AWS Management Console, AWS CLI, or through an AWS SDK. This provides developers with flexibility in how they choose to deploy and manage their functions.
  • AWS Lambda automatically monitors the health of functions and reports metrics through Amazon CloudWatch. This allows developers to gain insights into the performance and behavior of their functions.
  • With AWS Lambda, developers can take advantage of the AWS ecosystem, which includes services like Amazon API Gateway for building RESTful APIs and Amazon S3 for storing data.
  • Lambda functions can be easily integrated with third-party services and libraries, making it easy to extend the functionality of your applications.
  • AWS Lambda provides built-in security features, such as IAM roles and policies, to control access to resources and ensure the integrity of your functions.
  • Lambda functions can be deployed in multiple AWS regions, allowing developers to build applications that are highly available and resilient.

What are top AWS Lambda instruments and tools?

  • AWS SAM (Serverless Application Model): AWS SAM is an open-source framework that extends AWS CloudFormation to provide a simplified way of defining serverless applications. It was introduced in 2016 and has gained popularity for its ability to define serverless resources using YAML or JSON templates. AWS SAM makes it easier to manage and deploy AWS Lambda functions along with other resources, simplifying the development and deployment process.
  • Serverless Framework: The Serverless Framework is a popular open-source development tool that enables developers to build, deploy, and manage serverless applications. It supports multiple cloud providers, including AWS Lambda. The framework provides an easy-to-use command-line interface and a declarative configuration file for defining serverless functions and their associated resources. It has been widely adopted by developers for its simplicity and flexibility in managing serverless applications.
  • AWS Cloud9: AWS Cloud9 is an integrated development environment (IDE) that provides a cloud-based environment for writing, running, and debugging code. It offers built-in support for AWS Lambda development, allowing developers to write and test Lambda functions directly in the browser. With Cloud9, developers can collaborate in real-time, making it easier to work on Lambda functions with teams distributed across different locations.
  • IOPipe: IOPipe is a monitoring and debugging tool specifically designed for serverless applications, including AWS Lambda. It provides real-time insights into the performance and behavior of Lambda functions, allowing developers to identify and resolve issues quickly. IOPipe also offers advanced features like distributed tracing, error tracking, and custom metrics, making it a powerful tool for monitoring and optimizing serverless applications.
  • Thundra: Thundra is a comprehensive observability and debugging platform for serverless applications, including AWS Lambda. It offers deep insights into the behavior and performance of Lambda functions, allowing developers to identify bottlenecks, troubleshoot issues, and optimize performance. Thundra provides features like distributed tracing, log analysis, and error tracking, making it a valuable tool for monitoring and debugging serverless applications.
  • X-Ray: AWS X-Ray is a service that helps developers analyze and debug distributed applications, including those built with AWS Lambda. It provides end-to-end visibility into requests as they flow across different components and services, making it easier to identify performance bottlenecks and troubleshoot issues. X-Ray integrates seamlessly with Lambda functions, enabling developers to trace requests and analyze performance metrics for individual functions.
  • Apex: Apex is a lightweight deployment framework for serverless architectures, including AWS Lambda. It simplifies the process of deploying Lambda functions by providing a simple command-line interface and a project configuration file. Apex supports various programming languages and offers features like environment variables, logging, and IAM role management. It has been widely used by developers for its simplicity and ease of use.
  • Serverless Dashboard: The Serverless Dashboard is a web-based management console for serverless applications, including AWS Lambda. It provides a centralized interface for deploying, monitoring, and managing serverless functions and their associated resources. The dashboard offers features like deployment history, real-time monitoring, and alerting, making it easier for teams to collaborate and manage serverless applications at scale.
  • Serverless Step Functions: Serverless Step Functions is an extension of AWS Step Functions that enables developers to build serverless workflows using AWS Lambda functions. It provides a visual interface for defining and orchestrating the execution of multiple Lambda functions, making it easier to build complex, event-driven workflows. Serverless Step Functions simplifies the development and management of serverless workflows, offering features like error handling, retries, and parallel execution.
  • Stackery: Stackery is a serverless operations platform that helps developers build, deploy, and operate serverless applications, including those built with AWS Lambda. It offers a visual interface for designing serverless architectures, managing environments, and deploying functions. Stackery provides features like real-time monitoring, automated deployments, and infrastructure-as-code templates, making it easier for teams to collaborate and manage serverless applications efficiently.

Pros & cons of AWS Lambda

6 Pros of AWS Lambda

  • Scalability: AWS Lambda automatically scales your applications based on the incoming request volume. This allows you to handle a large number of requests without worrying about capacity planning.
  • Cost Efficiency: With AWS Lambda, you only pay for the actual compute time consumed by your application, rather than paying for idle server time. This can result in significant cost savings, especially for applications with sporadic or unpredictable traffic.
  • Easy Deployment: AWS Lambda takes care of the underlying infrastructure and server management, allowing you to focus on writing your application code. This makes it easy and quick to deploy your applications without the need for manual configuration.
  • Event-driven Architecture: AWS Lambda is designed for event-driven architectures, where your functions are triggered by specific events such as changes in data, file uploads, or API requests. This makes it well-suited for building serverless applications and integrating with other AWS services.
  • Integration with AWS Ecosystem: AWS Lambda seamlessly integrates with other AWS services, such as Amazon S3, Amazon DynamoDB, and Amazon API Gateway. This allows you to build powerful and scalable applications by leveraging the capabilities of these services.
  • Language Support: AWS Lambda supports multiple programming languages, including Java, Python, Node.js, and C#. This gives you the flexibility to choose the language that best suits your development needs and expertise.

6 Cons of AWS Lambda

  • Cold Start Latency: When a Lambda function is invoked for the first time or after a period of inactivity, there might be a noticeable delay in response time due to the initialization process. This can impact real-time applications that require low latency.
  • Execution Time Limit: AWS Lambda has a maximum execution time limit of 5 minutes. If your application requires longer running tasks, you might need to consider other compute options, such as AWS EC2 instances.
  • Storage Limitations: AWS Lambda has limited local storage available within the execution environment. If your application requires large amounts of persistent storage, you may need to use external storage services like Amazon S3 or Amazon EFS.
  • Debugging Challenges: Debugging serverless applications can be more challenging compared to traditional applications deployed on servers. AWS provides tools and services to aid in debugging, but it may require additional effort and expertise.
  • Vendor Lock-in: Building applications using AWS Lambda may result in vendor lock-in, as the code is tightly coupled with the AWS infrastructure. Migrating to a different cloud provider or platform might require significant code modifications.
  • Limited Control over Infrastructure: With AWS Lambda, you have limited control over the underlying infrastructure and server management. This can be a limitation for applications that require fine-grained control or custom configurations.

How and where is AWS Lambda used?

Case NameCase Description
Real-Time File ProcessingAWS Lambda allows you to process files in real-time by triggering Lambda functions whenever a file is uploaded to an S3 bucket. For example, you can use Lambda to resize images, extract metadata, or perform any other custom processing on the file. This eliminates the need for manual intervention and enables scalable and efficient file processing.
Serverless Web ApplicationsLeveraging AWS Lambda, you can build serverless web applications by defining Lambda functions to handle API requests. This eliminates the need to manage and provision servers, reducing operational overhead. Lambda functions can be triggered by API Gateway, allowing you to easily build RESTful APIs, microservices, and backends for your web applications.
Data Transformation and ETLWith AWS Lambda, you can perform data transformations and Extract, Transform, Load (ETL) processes on-the-fly. You can trigger Lambda functions in response to events such as data being added to a database, changes in data streams, or even scheduled intervals. This enables you to build scalable and flexible data pipelines without the need for dedicated servers.
Real-Time Stream ProcessingAWS Lambda integrates seamlessly with services like Amazon Kinesis and Amazon DynamoDB Streams, allowing you to process and analyze real-time streaming data. Lambda functions can be triggered by the arrival of new data in the stream, enabling you to perform real-time analytics, anomaly detection, and other data processing tasks without the need for provisioning and managing infrastructure.
Chatbots and Voice AssistantsBy combining AWS Lambda with services like Amazon Lex and Amazon Polly, you can build intelligent chatbots and voice assistants. Lambda functions can be used to process natural language queries, generate responses, and interact with various APIs to fulfill user requests. This enables you to create conversational interfaces that can be integrated into your applications, websites, or messaging platforms.
Internet of Things (IoT) ApplicationsAWS Lambda provides a powerful platform for building IoT applications. Lambda functions can be triggered by IoT events such as sensor data, device state changes, or time-based intervals. You can use Lambda to process and analyze the incoming data, trigger actions, send notifications, or update databases. This enables you to build scalable and event-driven IoT solutions without managing the underlying infrastructure.
Image and Video AnalysisWith AWS Lambda, you can leverage powerful image and video analysis services like Amazon Rekognition. Lambda functions can be used to trigger analysis tasks when new images or videos are uploaded to an S3 bucket. This allows you to automatically detect objects, faces, labels, or perform other advanced analysis tasks on your media assets without the need for manual intervention.
Automated Data Backup and ArchivingAWS Lambda can be used to automate data backup and archiving processes. You can schedule Lambda functions to run at specific time intervals or trigger them in response to events such as database updates or file modifications. This enables you to automatically back up data, move it to archival storage, or perform other data management tasks without the need for manual intervention.

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

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsJunior developers typically work under the guidance of more experienced developers and focus on learning and gaining practical experience. They assist in implementing features, fixing bugs, and writing code based on provided specifications. Junior developers may also participate in code reviews and contribute to documentation.$50,000 – $70,000
Middle2-5 yearsMid-level developers have gained experience and are capable of working more independently. They are responsible for implementing and maintaining software features, debugging and fixing issues, and collaborating with other team members. They may also be involved in designing software components and providing technical guidance to junior developers.$70,000 – $90,000
Senior5+ yearsSenior developers have extensive experience and possess deep knowledge in their domain. They take ownership of complex features or modules, provide technical leadership, and contribute to architectural decisions. They collaborate with cross-functional teams, mentor junior and mid-level developers, and actively participate in code reviews and system improvements.$90,000 – $120,000
Expert/Team Lead8+ yearsExpert developers or team leads are highly skilled individuals with a strong track record in their field. They are responsible for leading teams, coordinating project activities, and ensuring the successful delivery of software solutions. They provide technical expertise, mentor and coach team members, and play a crucial role in driving project execution and ensuring high-quality results.$120,000 – $150,000+

Cases when AWS Lambda does not work

  1. Unsupported Languages: AWS Lambda supports a wide range of programming languages, including Python, Node.js, Java, C#, and Go. However, there are certain languages that are not supported, such as PHP or Ruby. If your application is written in an unsupported language, you will not be able to run it on AWS Lambda without making some modifications.
  2. Large Deployment Packages: AWS Lambda has a maximum deployment package size limit of 50 MB (compressed). If your application or function exceeds this limit, you may encounter issues while deploying or updating your code. It is important to optimize your deployment package and remove any unnecessary dependencies or large files to ensure smooth execution on Lambda.
  3. Long-Running Tasks: By default, AWS Lambda has a maximum execution time of 15 minutes. If your application requires longer running tasks, Lambda may not be the ideal choice. It is designed for short and stateless functions. If you need to perform tasks that exceed the time limit, consider using alternative services like AWS EC2 or AWS Batch.
  4. High Memory Requirements: AWS Lambda offers different memory configurations, ranging from 128 MB to 10 GB. However, if your application requires a significantly higher memory allocation than what Lambda provides, it may not be suitable for your use case. In such scenarios, it is recommended to consider other compute services that offer higher memory limits.
  5. Stateful Applications: AWS Lambda is designed to be stateless, meaning it does not retain any information between invocations. If your application relies on maintaining state or requires persistent storage, you will need to integrate it with other AWS services like Amazon S3 or Amazon DynamoDB. Lambda alone may not be sufficient for stateful applications.
  6. Network Dependencies: AWS Lambda functions run in a secure execution environment and have access to the internet via outbound network connections. However, if your application heavily relies on network dependencies or requires specific network configurations, you may face limitations with Lambda. It is essential to ensure that your application’s networking requirements align with Lambda’s capabilities.
  7. Real-Time Constraints: While AWS Lambda offers high scalability and can handle concurrent invocations, it is not designed for real-time or low-latency applications that require immediate responses. The cold start time, which is the time taken for a function to initialize, can introduce additional latency. If your use case demands real-time constraints, it is worth considering other services that are optimized for low-latency scenarios.

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