We are looking for a skilled Senior FullStack Developer who is ready to take on a Team Lead position soon and join an exciting and complex project. Description: An AI-powered platform for managing users, roles, and permissions. It handles identity verification (KYC/KYB), a rewards/points system, and connects with CRM, accounting, and card-issuing tools. It's genuinely complex - not just a simple database app.

English Proficiency: Upper-Intermediate / B2+ (client-facing communication required)

Team: Project Manager, Product Designer, 2 FullStack developers, Support Engineer.

Expected Working Hours: Full-time, 40 hours/week.

Location: Remote, Europe only. Preference for Western Europe (occasional on-site visits may be required); candidates from Eastern Europe will also be considered.

Engagement Duration: 6–12+ months (long-term).

Technology Stack

- Next.js 15 (App Router) + TypeScript, tRPC
- PostgreSQL + pgvector via Drizzle ORM, Zod
- NextAuth.js + Keycloak (OIDC/OAuth2)
- Tailwind + shadcn/ui
- Docker, Azure Container Apps, Terragrunt + GitHub Actions

Skills





- Schema/metadata-driven system design (this project uses per-role schema overlays across 11 distinct roles, not off-the-shelf RBAC).
- JSONB-based PostgreSQL modeling.
- Strong code review instincts around authorization/access control.
- Integrating multiple third-party APIs with graceful handling of partial failures.
- DevOps-adjacent comfort (Docker, IaC, CI/CD, Azure).

Responsibilities

- Own architectural decisions for a large, actively evolving codebase in a compliance- and finance-sensitive domain (KYC/KYB, points/rewards economy, card issuance).
- Extend the generic-entity/schema system without regressions.
- Lead integration work with external providers (SmartSearch, Salesforce, Xero, Pannovate, SendGrid).
- Review code with a security-first eye, particularly on permission/access-control gaps.
- Maintain the project's Memory Bank and feature-level documentation practices.
- Participate in on-call/production support.
- As the role matures, mentor other engineers and set technical guardrails for non-engineering contributors working directly in the codebase via AI tools.

📌 Senior FullStack developer (longterm position) (Madrid)
🏢 Selecto
📍 Madrid