Senior Backend Developer
Contract Role: Day Rate: €350-€380 per day, 8-12 month contract
You'll join a large, distributed backend engineering community and work within cross-functional teams alongside product managers, frontend, and mobile engineers. You'll play a key role in shaping core financial products, supporting a rapidly growing user base, and delivering high-quality solutions in a fast-paced environment.
What You'll Do
- Design, develop, deploy, and maintain backend services aligned with team and business goals
- Write clean, well-documented, production-grade code
- Contribute to service architecture, resilience, scalability, and robustness using Domain-Driven Design principles
- Participate in technical decision-making and mentor other engineers as you grow in technical leadership

Business Tech Stack
Backend: Go, Frontend: React. Js, Mobile: Kotlin, Swift, Infrastructure: Kubernetes on AWS, Database: PostgreSQL, Messaging & Observability: Kafka, ELK stack, and other modern tools
Your Team
You'll join a large Product Engineering organization,



structured into small cross-functional teams across multiple domains, including: Customer onboarding, account management, and compliance;
Payments and financial operations;
Platform systems, integrations, and monetization;
Cash flow management and bookkeeping tools;
Collaborative accounting and pre-accounting solutions. Each team typically includes 6–8 backend engineers and owns its product scope end to end.
About You
- Solid background building user-facing products and working with large-scale, high-traffic systems
- Problem solver: Pragmatic, product-minded, and focused on delivering customer value
- Impact-driven: Motivated by building products used by tens of thousands of users
- Quality-oriented: Strong advocate for testing, clean code, and constructive code reviews
- Curious: Eager to learn, improve, and explore new ideasCollaborative: Comfortable working closely with both technical and non-technical partners
-

📌 Senior Backend Developer (España)
🏢 Forsyth Barnes
📍 España