Senior Backend Engineer (Python/Django) Barcelona (Hybrid) | Full-time | Fintech

Up to €90,000 (plus benefits)

Are you a hands-on backend engineer who loves building systems that scale? Do you enjoy owning architecture end-to-end while still writing production code every day? We’re partnering with a fast-growing, VC-backed fintech on a mission to improve people’s financial well-being. Since launching recently, they’ve already scaled to hundreds of thousands of users and processed over €1B in transactions — and they’re just getting started.

The Role

This is a Senior level, highly hands-on engineering role focused on designing, building, and scaling backend systems in a modern, event-driven environment.

You’ll play a key role in shaping architecture, solving complex problems, and raising the technical bar across the team.

What You’ll Be Doing

Designing and scaling backend systems using Python/Django

Owning architecture in a microservices + event-driven environment

Working closely with infrastructure and security teams (AWS) Taking systems from design → production → scale

Leveraging AI tools to improve development speed and quality





Mentoring engineers and contributing to engineering excellence

Tech Stack

Python, Django, AWS, Docker, Kafka, PostgreSQL, Redis, MondoDB and Datadog

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What We’re Looking For

10+ years of backend engineering experience

Strong expertise in Python & Django

Proven track record scaling systems in startups or scale-ups

Experience with AWS and containerized environments

Deep understanding of PostgreSQL and performance optimisation

Ability to debug complex production issues

Focus on performance, reliability, and cost-efficiency

Strong communication skills (English) Pragmatic, humble, and impact-driven mindset

What’s On Offer

Competitive salary

Health insurance + meal allowance

Hybrid working (2 days remote/week) High-ownership, low-ego environment

A meaningful mission with real-world impact

If you’re excited about building scalable systems in a fast-moving fintech and want to stay close to the code while influencing architecture, we’d love to hear from you.

Apply or message me directly to learn more.

📌 Senior Software Engineer - Up To €90.000 A Year (Barcelona)
🏢 Socium - Teams Done Differently
📍 Barcelona