Senior API Integration Developer

On behalf of a partner company, Nordic Investin is looking for a Senior API Integration 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 reliable APIs and integration services across complex business platforms. You will connect REST and GraphQL, event messaging and integration patterns while ensuring that identity and contract testing 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 reliable APIs and integration services across complex business platforms. Translate goals and constraints into a clear approach for REST and GraphQL and event messaging. Establish useful standards, routines or decision artefacts around integration patterns. Coordinate stakeholders and dependencies affecting identity. Use evidence and measurable outcomes to improve contract testing. Strengthen knowledge sharing and sustainable ownership through monitoring. What you will bring Relevant experience delivering reliable APIs and integration services across complex business platforms in a demanding environment. Strong working knowledge of REST and GraphQL and event messaging. Practical experience applying integration patterns and identity. Ability to asse