Senior Payment Platform Developer

On behalf of a partner company, Nordic Investin is looking for a Senior Payment Platform Developer. You want technical choices, delivery and production behaviour to reinforce each other, even when the constraints are difficult. The partner is strengthening its capability in secure payment services with strong correctness and auditability. You will connect Java, payment protocols and event streaming while ensuring that encryption and reconciliation receive appropriate discipline. The aim is practical progress that colleagues can use, leaders can evaluate and the organisation can sustain. The environment rewards early questions, visible trade-offs and engineering discipline. Security and operability belong in the design. How you will work You will work with product, architecture, security, operations and domain colleagues. The partner values short feedback loops, evidence from real systems and direct communication. This role calls for independent judgement and the ability to raise the quality around you. You are expected to make trade-offs visible, recognise when a decision needs wider expertise and move work forward without creating unnecessary process. What you will do Own the practical direction for secure payment services with strong correctness and auditability. Translate goals and constraints into a clear approach for Java and payment protocols. Establish useful standards, routines or decision artefacts around event streaming. Coordinate stakeholders and dependencies affecting encryption. Use evidence and measurable outcomes to improve reconciliation. Strengthen knowledge sharing and sustainable ownership through production support. What you will bring Relevant experience delivering secure payment services with strong correctness and auditability in a demanding environment. Strong working knowledge of Java and payment protocols. Practical experience applying event streaming and encryption. Ability to assess priorities, risks and trade-offs involving reconciliati