Senior Backend Engineer

Reliant AI; Deutschland; Hybrid; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

An innovative AI startup in Berlin is seeking a Senior Backend Developer to drive the development of core backend functionality. You will have the opportunity to impact the technological stack and work in a stimulating environment. Ideal candidates should have over 5 years of experience in backend services with expert skills in Python and API development. The role includes flexible work options and competitive compensation.

Leistungen

Competitive salary and equity package

Flexible work hours

Professional development opportunities

Qualifikationen

• 5+ years of proven experience in backend services or distributed systems.
• Proven ability to deliver production-quality code.
• Experience with system and service design.

Aufgaben

• Take ownership of complex project deliveries.
• Provide insights for UI/UX concepts and backend development planning.
• Ensure code quality through testing and reviews.

Kenntnisse

Backend services development

API design and maintenance

Collaboration with cross-functional teams

Strong communication skills

Tools

Python

FastAPI

PostgreSQL

MongoDB

GCP

Jobbeschreibung

About the role

We are looking for two exceptionally talented backend engineers to join our team in Berlin. You will play a pivotal role in driving the development and delivery of our technology by multiplying our ability to develop core backend functionality and unlocking the ability of other teams to develop against this backend.

If you are passionate about building great products, enjoy working in a really fast-paced environment, and are excited about contributing to the growth of an ambitious startup, this opportunity is for you.

Our stack

• Python / FastAPI
• PostgreSQL / MongoDB / Elastic
• Cloud LLM providers + bare metal GPUs
• GCP

As an early member of our team, you get meaningful responsibility from day one together with the opportunity to make decisions and impact our early technological stack and infrastructure.

Working in one of the most ambitious AI companies that exist today, surrounded by a great team of colleagues who are all world leaders in their respective fields, we believe we can offer an incredibly stimulating environment to do this work in.

In this role you will

• Take ownership of the delivery of complex projects; aligning with collaborators in cross‑functional teams; and ensuring timely delivery of mission‑critical components
• Develop a comprehensive understanding of the overall vision behind Reliant, and integrate this into the architectural and process choices you make in your day‑to‑day work
• Provide valuable insights to refine UI / UX concepts and contribute to the planning of backend and infrastructure development
• Proactively take responsibility for long‑term code quality and architecture

About you

As the ideal candidate, you will already have a successful career in backend or full‑stack development to show for with a particular emphasis on rapid and repeated innovation; effective delivery and systems design that allows for scale both in opportunity and in team.

You might thrive in this role if you bring the following skills and experiences

• 5+ years of proven experience building backend services or distributed systems
• Design, build, test, and maintain backend services and APIs that serve product features. This includes writing strong, production‑quality code
• Participate in system & service design; contribute to architectural discussions and make trade‑offs for scalability, latency, cost, reliability.
• Can work through ambiguity; able to translate vague or high‑level requirements into implementation plans
• Collaborate with cross‑functional partners: product management, frontend, UX, data, operations, etc. to define requirements, plan implementation, deliver features
• Ensure code quality: write, review, and improve unit / integration tests; participate in code reviews; maintain consistency with best practices
• Excellent communication skills: you should be able to explain technical decisions, trade‑offs, possibly push back or negotiate with product or other stakeholders.

In addition, the following would be an advantage

• Experience in machine learning, AI and LLMs
• DevOps and infrastructure experience
• Experience documenting: design docs, runbooks, best practices.
• Previous experience working in a startup or similarly fast‑paced environment

What We Offer

• Competitive salary and equity package
• Opportunity to make a meaningful impact in a fast‑growing startup
• A supportive, collaborative, and diverse work environment
• Flexible work hours and remote work options
• Professional development and continuous learning opportunities

How to apply

If you are a driven Senior Backend Developer with a passion for creating stable, cutting‑edge solutions, we’d love to hear from you. Apply now and join our mission to empower knowledge workers across the globe!

Reliant is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.