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Talented Microservices Developers available now

  • Nikola O.

    Serbia

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    Nikola O.

    Backend Developer

    Trusted member since 2023

    7 years of experience

    Nikola is a skilled Backend Developer with five years of commercial experience, specializing in Java, Spring Boot, Spring Data, Azure, and Microservices.

    Expert in

    • Microservices
    • Java
    • Spring Boot
    • SQL
    • NoSQL
    • +48
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  • Karlo B.

    Croatia

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    Karlo B.

    Fullstack Developer

    Trusted member since 2023

    10 years of experience

    Karlo is a skilled software engineer with a focus on Full-stack development and over a decade of commercial experience.

    Expert in

    • Microservices
    • ASP.NET
    • C#
    • .NET
    • Docker
    • +66
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  • Péter V.

    Hungary

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    Péter V.

    Backend Developer

    Trusted member since 2023

    15 years of experience

    Péter is a Software Engineer and Senior Solution Architect with 20 years of experience designing and implementing quality software. He has expertise in Java, Solution Architecture, and Linux systems.

    Expert in

    • Microservices
    • Java
    • Agile
    • Solution Architecture
    • Team leading
    • +14
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  • Mason B.

    Finland

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    Mason B.

    DevOps Engineer

    Verified member

    15 years of experience

    Mason is a DevOps Engineer and Azure Cloud Architect with 12+ years of commercial experience.

    Expert in

    • Microservices
    • Azure
    • DevOps
    • Terraform
    • Kubernetes
    • +13
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  • Achmat N.

    South Africa

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    Achmat N.

    DevOps Engineer

    Trusted member since 2023

    13 years of experience

    Achmat is a seasoned DevOps Engineer with a wealth of knowledge from 15 years of experience.

    Expert in

    • Microservices
    • AWS
    • DevOps
    • Docker
    • Kubernetes
    • +16
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  • Ardit S.

    Albania

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    Ardit S.

    Fullstack Developer

    Trusted member since 2022

    7 years of experience

    Software engineer with an extensive background in designing, programming, and testing software across various platforms.

    Expert in

    • Microservices
    • Node.js
    • TypeScript
    • JavaScript
    • Golang
    • +27
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  • Tatev A.

    Armenia

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    Tatev A.

    Backend Developer

    Trusted member since 2023

    9 years of experience

    Tatev is a Backend developer with eight years of experience. She has extensive experience in Java, Spring, Spring Boot and Xamarin.

    Expert in

    • Microservices
    • Java
    • Spring
    • Spring Boot
    • MySQL
    • +17
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  • Nikola O.

    Serbia

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    Nikola O.

    Backend Developer

    Trusted member since 2023

    7 years of experience

    Nikola is a skilled Backend Developer with five years of commercial experience, specializing in Java, Spring Boot, Spring Data, Azure, and Microservices.

    Expert in

    • Microservices
    • Java
    • Spring Boot
    • SQL
    • NoSQL
    • +48
    View Profile

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Hire the best Microservices Developers in 2025

Authors:

Aleksandr Kuleshov

Aleksandr Kuleshov

Senior PHP Developer / Team Lead

Verified author

The adoption of microservices architecture has transformed how organizations build and scale applications. This approach breaks down complex systems into smaller, independently deployable services, enabling agility, scalability, and faster development cycles.

However, building and managing such systems requires specialized skills and expertise. Hiring skilled microservices developers is critical for creating scalable, resilient, and efficient modern applications.

About Microservices

Microservices architecture is a modern approach to software development where applications are built as a collection of small, independent services. Each service is designed to perform a specific business function and can be developed, deployed, and scaled independently.

This modular design allows organizations to adopt different technologies for different services, improving system flexibility, maintainability, and resilience. Microservices enable faster development cycles, continuous deployment, and better fault isolation than traditional monolithic architectures.

Because microservices expertise can support scalability, rapid innovation, and system resilience, it is a highly competitive skill in today's job market. Developers skilled in designing, deploying, and managing microservices play a crucial role in building robust, future-proof applications, making them highly sought after by leading tech companies.

Must-have technical skills for Microservices Developers

Developing microservices requires specific technical skills to ensure efficient, scalable, and maintainable systems. Here are the must-have skills for microservices developers:

1. Programming languages

Java, PHP, C#, Python, Go, Node.js, etc. Proficiency in at least one programming language commonly used for microservices is essential. These languages are popular for building scalable and high-performance services.

2. Containerization and orchestration

  • Docker: Developers should know how to containerize microservices using Docker to ensure consistent environments across development, testing, and production.
  • Kubernetes: Familiarity with Kubernetes is necessary for managing and orchestrating containers. It helps scale, deploy, and monitor microservices.

3. Cloud platforms

AWS, Azure, Google Cloud: Microservices are often deployed in cloud environments. Knowledge of cloud platforms and their services (e.g., storage, computing, networking) is critical for deploying and managing microservices effectively.

4. Databases and data management

SQL and NoSQL Databases: Understanding relational databases (e.g., MySQL, PostgreSQL) and NoSQL databases (e.g., MongoDB, Cassandra) is essential for choosing the right database for different microservices needs.

5. Message brokers and event streaming

Apache Kafka, RabbitMQ, NATS: Proficiency in message brokers and event streaming platforms is essential for handling asynchronous communication between microservices and ensuring scalability.

6. Distributed systems and networking

  • Load Balancing: Knowledge of load balancing techniques to distribute traffic across instances of services is essential.
  • Fault tolerance: Familiarity with circuit breakers (e.g., Hystrix) and retry patterns to manage failures in distributed systems.

7. Security practices

  • OAuth 2.0, JWT: Security is crucial in microservices. Developers should understand authentication and authorization techniques, including OAuth 2.0 and JSON Web Tokens (JWT).
  • Encryption and data protection: Knowledge of encryption methods for securing sensitive data at rest and in transit.

8. Monitoring and logging

  • Prometheus, Grafana: Knowledge of monitoring tools to collect and visualize metrics related to the performance and health of microservices.
  • ELK Stack (Elasticsearch, Logstash, Kibana): Understanding centralized logging systems for troubleshooting and debugging issues across distributed services.

9. Testing

Unit Testing, Integration Testing: Knowledge of writing unit tests and integration tests for microservices is essential to ensure the reliability of each service.

10. Agile and collaboration tools

JIRA, Confluence, Git: Experience with agile methodologies and collaboration tools is essential for working in teams, tracking progress, and maintaining version control for Microservices' codebases.

Nice-to-have technical skills for Microservices Developers

Advanced event sourcing and CQRS

Understanding event sourcing and Command Query Responsibility Segregation (CQRS) is necessary for handling complex business logic and data consistency.

API Gateway experience

Being familiar with API gateways (e.g., Kong, NGINX, Zuul) for managing, securing, and routing requests between microservices is beneficial.

Google Cloud Functions

Experience with serverless frameworks (AWS Lambda, Azure Functions) to create cost-efficient microservices that scale automatically.

Advanced cloud-native technologies

Expertise in cloud-native tools and frameworks, such as Istio for service mesh and Helm for Kubernetes deployment management.

Automated testing and Test-driven development (TDD)

Familiarity with automated testing frameworks for unit testing, integration testing, and API testing (e.g., JUnit, Postman) to ensure code quality and reliability.

Distributed tracing (Jaeger, Zipkin)

Understanding distributed tracing tools to monitor and debug requests across microservices, improving visibility and system health.

Reactive programming

Knowledge of reactive programming principles and tools (e.g., Reactor, RxJava) for handling asynchronous data streams in microservices can also be beneficial.

WebSockets and real-time communication

Experience with WebSockets or similar technologies for implementing real-time communication between microservices and clients.

Interview questions and example answers

1. What are microservices, and what are the key benefits they provide over a monolithic architecture?

Expected answer: Microservices are a style of software architecture where an application is composed of small, independent services that communicate over a network. Each service is focused on a specific business functionality and can be developed, deployed, and scaled independently.

Benefits:

  • Scalability: Individual services can be scaled independently.
  • Flexibility: Allows teams to use different technologies or frameworks for different services.
  • Resilience: Failure in one service doesn’t affect the entire system.
  • Faster time-to-market: Services can be updated independently, allowing for faster iterations.

2. How do you design a RESTful API for a microservice? What are the key principles you follow?

Expected answer: When designing a RESTful API, I focus on the following principles:

  • Statelessness: Each API request should be independent; no session state should be stored on the server.
  • Resource-based: RESTful APIs should model real-world entities as resources, each identified by unique URIs.
  • Use of HTTP methods: Use the appropriate HTTP methods (GET for fetching data, POST for creating, PUT for updating, DELETE for removing).
  • Error handling: Use appropriate HTTP status codes (e.g., 404 for not found, 500 for server errors) and provide clear error messages.
  • Versioning: APIs should be versioned (e.g., /api/v1/resource).

3. What is service discovery in the context of microservices, and why is it important?

Expected answer: Service discovery is a process where services in a microservice architecture automatically detect and communicate with each other, often through a service registry. It’s essential because microservices are distributed, and they can dynamically scale or fail. Without service discovery, it would be difficult for services to find and communicate with each other. Popular tools include Eureka, Consul, and Zookeeper.

4. What is the difference between synchronous and asynchronous communication in microservices, and when would you use each?

Expected answer:

  • Synchronous communication happens when services directly communicate in a request-response pattern, usually via RESTful APIs or gRPC. It’s suitable for operations that require immediate feedback or when a quick response is critical (e.g., authentication services).
  • Asynchronous communication occurs when services send messages or events (via queues like RabbitMQ and Kafka), and the sender doesn't wait for an immediate response. It’s useful for decoupling services, ensuring reliability in case of failures, and handling tasks that can be processed later (e.g., background jobs, event-driven architectures).

5. How would you handle data consistency across microservices?

Expected answer: In a microservices architecture, each service typically has its own database, leading to challenges in maintaining data consistency. There are several approaches:

  • Event sourcing: Store all changes to an application’s state as a sequence of events. It ensures consistency and can easily rebuild the system’s state.
  • CQRS (Command Query Responsibility Segregation): Separates read and write operations to optimize both.
  • Distributed transactions: Use patterns like SAGA to manage transactions across multiple services by breaking them into smaller, isolated transactions that ensure eventual consistency.

6. What are some common challenges in testing microservices, and how would you address them?

Expected answer:

  • Challenge: Testing microservices in isolation can be tricky since they often depend on other services.
  • Solution: Use mocking and stubbing to simulate dependent services. Contract testing can also ensure that services meet predefined expectations. I'd use tools like Postman or WireMock to test APIs, and JUnit to unit test the individual services.
  • Challenge: End-to-end testing is more complex in a distributed system.
  • Solution: I’d use integration testing in a staging environment, using tools like Docker Compose to deploy multiple services and Cypress for UI testing.

7. How would you ensure a microservices system's high availability and fault tolerance?

Expected answer:

High availability: To minimize downtime, I’d deploy services across multiple instances, regions, or availability zones. Load balancers (like NGINX or HAProxy) would distribute traffic.

Fault tolerance: Implement circuit breakers (e.g., Hystrix) to stop cascading failures and retry patterns to handle transient errors. I’d also use failover mechanisms to switch to backup systems when a service fails.

8. Can you explain how you would implement security in microservices?

Expected answer:

  • Authentication and authorization: I would use OAuth 2.0 and JWT (JSON Web Tokens) for secure, token-based authentication and authorization.
  • API Gateway: An API Gateway (e.g., Kong, Zuul) can be a security layer that securely centralizes authentication and route requests.
  • Data Encryption: Ensure data is encrypted both at rest and in transit (using TLS/SSL).
  • Role-based Access Control (RBAC): Enforce permissions for microservices with a fine-grained access control model.

9. How do you approach monitoring and logging in a microservices architecture? Expected answer:

  • Monitoring: I would use tools like Prometheus and Grafana to collect metrics about the performance and health of each service and create dashboards for real-time monitoring.
  • Logging: Use a centralized logging system like ELK Stack (Elasticsearch, Logstash, Kibana) to aggregate logs from all services. This allows for better visibility, debugging, and auditing.
  • Distributed tracing: Implement tools like Jaeger or Zipkin for tracing requests across services to understand their latency and performance.

10. Explain the role of a message broker in microservices and give examples of when you would use it.

Expected answer:

A message broker (e.g., Kafka, RabbitMQ) facilitates asynchronous communication between microservices. It decouples services by allowing them to communicate via messages instead of direct synchronous calls.

I would use a message broker when:

  • A service must process tasks asynchronously (e.g., sending emails and generating reports).
  • Handling high-throughput event-driven architectures (e.g., for event sourcing).
  • Enabling services to communicate in a fault-tolerant, scalable way without direct dependencies on each other.

Industries and applications of Microservices

Microservices architecture is gaining popularity across industries due to its scalability, flexibility, and ability to support rapid development and innovation. Businesses can optimize performance, scale effectively, and adapt to market changes by breaking applications into smaller, independent services. Here are some industries where microservices are making a significant impact:

1. eCommerce

eCommerce giants like Amazon and eBay use microservices to manage inventories, handle transactions, and deliver personalized user experiences. This architecture allows them to scale individual services, such as payment systems and product catalogs, without affecting the entire platform.

2. Finance and banking

In finance, microservices help banks improve transaction processing and fraud detection and integrate with third-party services. By breaking down complex systems, banks can deploy new financial products faster and ensure compliance with regulations.

3. Healthcare

Healthcare platforms use microservices for secure data management, real-time monitoring, and integration with medical devices. This modular approach helps healthcare providers scale systems, comply with regulations, and introduce new features, such as telemedicine.

4. Media and entertainment

Streaming services like Netflix and Spotify rely on microservices to deliver content globally, personalize recommendations, and ensure smooth streaming. Independent services handle tasks like video encoding and content delivery, ensuring high availability.

5. Transportation and logistics

Microservices support dynamic pricing, route optimization, and driver-partner interactions for companies like Uber and FedEx. This architecture enables real-time data processing and the rapid scaling of services during high-demand periods.

6. Telecommunications

Telecom companies use microservices to manage billing, customer support, and service provisioning. The flexibility of microservices allows them to deploy updates without downtime and scale solutions for millions of users.

Summary

Microservices architecture has transformed software development by breaking applications into smaller, independent services that are easier to scale, update, and maintain. This approach is widely used in eCommerce, finance, and healthcare to improve flexibility and resilience.

To succeed in microservices development, developers need skills in languages like Java, Python, and Go and expertise in RESTful APIs, containerization (Docker, Kubernetes), cloud platforms, and security practices. Advanced knowledge in event sourcing and serverless architectures can further enhance a developer’s value in the competitive job market.

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We work exclusively with top-tier professionals.
Our writers and reviewers are carefully vetted industry experts from the Proxify network who ensure every piece of content is precise, relevant, and rooted in deep expertise.

Aleksandr Kuleshov

Aleksandr Kuleshov

Senior PHP Developer / Team Lead

17 years of experience

Expert in PHP

Aleksandr Kuleshov is an accomplished PHP developer with over 16 years of commercial experience across diverse industries, including finance, healthcare, retail, education, transportation, logistics, sports, and entertainment. His global footprint spans the United States, Germany, Poland, Switzerland, Ukraine, and Denmark.

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