Backend developer in fintech

Weltrade is a leading international Fintech company with over two decades of stability and trust in the global FX and online trading industry. Established in 2006, we operate as a truly global, remote-first organisation, bringing together high-performing professionals across multiple time zones.We focus on building scalable trading infrastructure and high-impact commercial ecosystems that drive sustainable client acquisition worldwide. At Weltrade, we value ownership, autonomy, and measurable impact. You’ll join the product engineering team.

• Participate in sprint planning and technical discussions
• Decompose tasks together with PM and tech leads
• Develop new functionality within the domain
• Maintain and refactor legacy code without breaking existing business logic
• Integrate and support third-party services (affiliate platforms, tracking systems, payment solutions)
• Ensure correct data processing (attribution, calculations, statuses, synchronisations)
• Analyse and reduce technical debt within the team’s domain
• Improve integration reliability (error handling, idempotency, SLA control)
• Collaborate with analysts and cross-functional teams to clarify requirements

• 3–6+ years of commercial PHP development experience (strong preference for Symfony)
• Experience working in product teams (understanding the full feature lifecycle from idea to production)
• Experience supporting and gradually modernising legacy systems
• Strong understanding of architectural principles
• Experience integrating third-party APIs (REST, webhooks, authentication, error handling, retries)
• Strong SQL knowledge and understanding of indexes and query optimisation
• Ability to read and analyse existing code without rewriting everything from scratch
• Ability to assess risks when changing existing business logic
• Strong ownership and ability to make technical decisions within the responsibility area
• High attention to detail (especially in financial and partnership calculation logic)
• Ability to propose improvements with clear technical justification
• Будет плюсом: Experience in fintech, affiliate marketing, or partnership programs; Understanding of traffic attribution principles, UTM tracking, and conversion tracking; Experience with event-driven architecture or message queues; Experience in gradual monolith decomposition; Understanding of commission models; Experience working with high-load systems

• Remote work format
• European working hours
• Work in a product-oriented team
• Participation in technical planning and architectural discussions
• Ability to influence technical decisions within the domain
• Competitive compensation depending on experience level
• Wellbeing allowance (paid vacation, sick leave, public holidays) and a supportive culture