Senior/Lead Back End Engineer

RemoFirst

France

3 months ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

5 years minimum

Working hours

Regular working hours

Languages

English

Job source

indeed.com

Tech stack

Java (Programming Language) Amazon Web Services Unit Testing Cloud Computing Code Review Relational Databases Software Debugging Software Design Patterns Distributed Systems Django Web Framework Python (Programming Language) PostgreSQL

+16 more

MySQL NoSQL Object-Oriented Software Development Migration Manager Test-Driven Development (TDD) Flask (Web Framework) Spring-boot Reliability of Systems Backend Git Fastapi Integration Tests Solid Principles Restful APIs Web Api Microservices

Job description

Design, develop, and maintain backend services using Python and Java.
Support and contribute to the gradual migration from Python-based services to Java, ensuring stability and continuityBuild and maintain RESTful APIs and backend integrations.
Participate in system design and architectural discussions, especially around service boundaries and migration strategy.
Work with distributed systems and microservices.
Integrate with third-party services and external APIs.
Write clean, well-tested, and maintainable code following best practices.
Participate in code reviews, technical discussions, and knowledge sharing.
Debug production issues and improve system reliability, observability, and performance.
Collaborate effectively with cross-functional teams across time zones.

Requirements

Do you have experience in Unit testing?, * 5+ years of backend software development experience

Strong professional experience with Python (Django, FastAPI, Flask, or similar frameworks)
Strong professional experience with Java, preferably using Spring Boot.
Solid understanding of object-oriented design, SOLID principles, and design patterns
Experience designing and consuming RESTful APIs
Experience with relational databases (PostgreSQL, MySQL); exposure to NoSQL databases is a plus
Familiarity with unit testing, integration testing, and test-driven development (TDD)
Experience with CI/CD pipelines, Git, and modern development workflows
Understanding of microservices architecture and distributed systems
Experience working with cloud platforms (AWS preferred)
Strong problem-solving skills and attention to performance and scalability
Excellent written and verbal communication skills in English

Benefits & conditions

Fully remote role
Opportunity to work on global-scale systems and products
Exposure to international teams and modern engineering practices
High ownership and autonomy in a fast-growing startup environment
A strong culture grounded in speed, ownership, trust, transparency, customer obsession, and excellence.
Real problems, global impact, and the chance to help redefine how the world works.