We embed senior engineers inside product teams in Europe and the US. This role is for a Belgian fintech building a business valuation platform used by accountants and auditors.
The work has two halves and they belong to one person: 1. Integrations with Benelux accounting systems: Silverfin (REST), Yuki (SOAP), Exact (OAuth2). Three protocols, three auth models, each with its own way of breaking.
2. The infrastructure those integrations live on: pipelines, secrets, retries, monitoring, and the deploys that keep it all running.
You are a fit if — 5+ years backend, strong in at least one of Python, Node.js or .NET — You have built third-party API integrations that went to production and stayed there — Comfortable with SOAP as well as REST, and with OAuth2 flows — You own your own infrastructure: Docker, CI/CD, and either Terraform or Kubernetes in real projects — English C1: you talk to the client directly, not through a manager — You can overlap with Central European hours
Nice to have — Accounting, ERP or fintech domain experience — AWS, Azure or GCP at production scale
Conditions — Full-time, remote from Ukraine — $4,300–5,000 per month depending on experience — Long-term: the integration layer is the first piece, not the whole scope — You interview with the client before anything is signed, and you meet our CTO first
