20h ago
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Senior FullStack developer (long term, contract)

SpainSpain·BarcelonaRemotesenior
EngineeringFullstack Developer
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Quick Summary

Key Responsibilities

Own architectural decisions for a large, actively evolving codebase in a compliance- and finance-sensitive domain (KYC/KYB, points/rewards economy, card issuance).

Technical Tools
EngineeringFullstack Developer
  • 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

  • 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

~1 min read
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    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).

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    Review code with a security-first eye, particularly on permission/access-control gaps.

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    Maintain the project's Memory Bank and feature-level documentation practices.

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    Participate in on-call/production support.

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    Responsible for managing the DevOps part of the project

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    As the role matures, mentor other engineers and set technical guardrails for non-engineering contributors working directly in the codebase via AI tools.

Location & Eligibility

Where is the job
Barcelona, Spain
Remote within one country
Who can apply
ES

Listing Details

Posted
September 28, 2026
First seen
September 28, 2026
Last seen
September 28, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
65%
Scored at
September 28, 2026

Signal breakdown

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Senior FullStack developer (long term, contract)