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Senior backend developer

London
VE3
Backend developer
Posted: 22 December
Offer description

Job Description
Job Title: Senior Backend Developer (5–7 Years Experience)

Role Mission:

As a Senior Backend Developer, you will be responsible for building the "brains" of our application. You will design, develop, and maintain server-side logic, ensuring high performance and responsiveness to requests from the front-end. You will play a critical role in architectural decisions and mentor mid-level developers to maintain a high standard of engineering excellence.



Requirements

Key Responsibilities:

* API Design & Development: Build and maintain robust, scalable RESTful or GraphQL APIs.

* Database Management: Design complex relational and non-relational schemas, optimizing queries for performance and scalability.

* System Architecture: Contribute to microservices design, ensuring services are decoupled, testable, and maintainable.

* Performance Tuning: Identify bottlenecks in the code or database and implement caching strategies (e.g., Redis) or code refactors to improve latency.

* System Integration: Design the communication layer between Python and Node.js services (e.g., via gRPC, RabbitMQ, or Kafka).

* Security: Implement best practices for data protection, authentication (OAuth2, JWT), and authorization across all services.

* DevOps Collaboration: Work closely with DevOps to manage CI/CD pipelines and ensure smooth deployments via Docker/Kubernetes.

* Mentorship: Lead code reviews and technical grooming sessions to foster a culture of continuous learning.

Technical Skills Required:

Languages:

• Proficiency in at least one: Java (Spring Boot), Go, Python (Django/FastAPI), or Node.js.

Architecture:

• Solid understanding of Microservices, Event-Driven Architecture, and Message Brokers (Kafka, RabbitMQ).

Databases:

• Deep expertise in PostgreSQL/MySQL and NoSQL solutions like MongoDB or DynamoDB.

Cloud Services:

• Hands-on experience with AWS (EC2, S3, RDS, Lambda), Azure, or GCP.

Testing:

• Mastery of Unit, Integration, and End-to-End testing (TDD/BDD).

Tools:

• Git, Docker, Kubernetes, and monitoring tools like Prometheus or Datadog.

Infrastructure & DevOps (2025 Standards)

Cloud Native: Advanced experience with AWS (Lambda, ECS, RDS) or equivalent GCP/Azure services.

Orchestration: Experience deploying and scaling containerized applications using Docker and Kubernetes.

Observability: Setting up monitoring and distributed tracing using OpenTelemetry, Datadog, or ELK Stack.

What We Are Looking For:

The "Why" over the "How": You don't just write code; you understand the business implications of choosing one library or database over another.

Legacy Mindset: You write code that is clean, documented, and easy for the next developer to understand.

Problem Solving: You have a proven track record of debugging complex production issues that span multiple services.

Communication: You can explain technical constraints to non-technical stakeholders (Product Managers, Designers) effectively.





Benefits

* Work on cutting-edge technologies and impactful projects.
* Opportunities for career growth and development.
* Collaborative and inclusive work environment.
* Competitive salary and benefits package.



Requirements
Key Responsibilities: API Design & Development: Build and maintain robust, scalable RESTful or GraphQL APIs. Database Management: Design complex relational and non-relational schemas, optimizing queries for performance and scalability. System Architecture: Contribute to microservices design, ensuring services are decoupled, testable, and maintainable. Performance Tuning: Identify bottlenecks in the code or database and implement caching strategies (e.g., Redis) or code refactors to improve latency. System Integration: Design the communication layer between Python and Node.js services (e.g., via gRPC, RabbitMQ, or Kafka). Security: Implement best practices for data protection, authentication (OAuth2, JWT), and authorization across all services. DevOps Collaboration: Work closely with DevOps to manage CI/CD pipelines and ensure smooth deployments via Docker/Kubernetes. Mentorship: Lead code reviews and technical grooming sessions to foster a culture of continuous learning. Technical Skills Required: Languages: • Proficiency in at least one: Java (Spring Boot), Go, Python (Django/FastAPI), or Node.js. Architecture: • Solid understanding of Microservices, Event-Driven Architecture, and Message Brokers (Kafka, RabbitMQ). Databases: • Deep expertise in PostgreSQL/MySQL and NoSQL solutions like MongoDB or DynamoDB. Cloud Services: • Hands-on experience with AWS (EC2, S3, RDS, Lambda), Azure, or GCP. Testing: • Mastery of Unit, Integration, and End-to-End testing (TDD/BDD). Tools: • Git, Docker, Kubernetes, and monitoring tools like Prometheus or Datadog. Infrastructure & DevOps (2025 Standards) Cloud Native: Advanced experience with AWS (Lambda, ECS, RDS) or equivalent GCP/Azure services. Orchestration: Experience deploying and scaling containerized applications using Docker and Kubernetes. Observability: Setting up monitoring and distributed tracing using OpenTelemetry, Datadog, or ELK Stack. What We Are Looking For: The "Why" over the "How": You don't just write code; you understand the business implications of choosing one library or database over another. Legacy Mindset: You write code that is clean, documented, and easy for the next developer to understand. Problem Solving: You have a proven track record of debugging complex production issues that span multiple services. Communication: You can explain technical constraints to non-technical stakeholders (Product Managers, Designers) effectively.

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