Senior Full-Stack Engineer

THE VAULT; Berlin; À distance; EUR 90 000 - 150 000; Plein temps

Avantages offerts par ce poste

Competitive salary

Annual performance bonus

Fully remote position— work from anyw​

Paid time off

Résumé du poste

The Vault by Tría Finance is a fintech group delivering crypto-native solutions with regulatory compliance. We seek a Senior Full-Stack Engineer to own features end-to-end, from Go/Node.js backends to a crisp React UI.

Responsibilities include building end-to-end product features, applying DDD patterns, and ensuring observability and security across systems. You will work in a fully remote setup with global teams and a CET-aligned cadence.

Qualifications

• 7+ years building production systems with Go and MERN stack.
• Strong backend fundamentals: APIs, concurrency, reliability.
• Hands-on with DDD: domain modeling and boundaries.
• Strong databases: PostgreSQL and MongoDB design and tuning.
• Frontend proficiency in React (TypeScript) and state management.
• Experience with ORMs/ODMs and raw SQL when needed.
• Proficient use of AI coding tools with disciplined verification.

Responsabilités

• Build end-to-end features across Go/Node.js backends and React frontend.
• Incorporate AI-assisted development daily to accelerate delivery.
• Design backend services using DDD, proper layering, and scalable architecture.
• Implement data models and migrations for PostgreSQL and MongoDB.
• Develop REST APIs and event-driven workflows as needed.
• Develop frontend dashboards and admin flows with React/TypeScript.
• Ensure observability: logging, metrics, tracing, error handling.
• Contribute to security: RBAC, secrets handling, audit trails.
• Own quality: unit/integration/contract tests and CI pipelines.

Connaissances

Go

Node.js

React

TypeScript

DDD patterns

PostgreSQL

MongoDB

REST APIs

Express

MERN stack

Outils

GORM

Mongoose

Docker

Kubernetes

Description du poste

The Vault by Tría Financeis a Swiss and EU-regulated fintech group delivering institutional-grade digital asset infrastructure and services.

Bringing together a software vendor and a licensed Crypto Asset Service Provider (CASP), The Vault combines deep domain expertise with a strong foundation of transparency, security, and regulatory compliance.

We develop and operate a comprehensive suite of crypto-native solutions, powered by proprietary technology, enabling institutions to execute digital asset strategies across both custodial and non-custodial models.

We're building a security-first platform for digital asset operations. Our product is API-driven, highly auditable, and engineered for reliability. We're looking for aSenior Full-Stack Engineerwho can own features end-to-end — from clean domain modeling in Go or Node.js to a polished, crisp React UI.

Responsibilities:

• Build end-to-end product features across Go and Node.js/Express backends and React frontend
• AI-assisted development: use Cursor/Copilot/ClaudeCode (or similar) daily to accelerate delivery, refactoring, and test generation—while verifying outputs and keeping code clean
• Design backend services using DDD patterns (bounded contexts, aggregates, domain events), clean layering, and pragmatic architecture
• Implement data models and migrations across PostgreSQL and MongoDB, using GORM, Mongoose, or raw queries where appropriate
• Build and maintain REST APIs (and webhooks/event-driven workflows where needed) in both Go and Node.js/Express
• Implement frontend flows in React (TypeScript): dashboards, admin workflows, status lifecycles, audit views
• Ensure correctness and observability: structured logging, metrics, tracing, and production-ready error handling
• Contribute to security fundamentals: RBAC, least-privilege access, safe secrets handling, and audit trails
• Own quality: unit/integration tests, contract tests, and CI pipelines

Must-have

• 7+ years building production systems with Go and/or the MERN stack (MongoDB, Express, React, Node.js), plus solid React experience
• Strong backend fundamentals: concurrency, APIs, reliability, debugging
• Hands-on with DDD (not just buzzwords): can model domains and keep boundaries clean
• Strong database skills across PostgreSQL and MongoDB: schema/collection design, indexing, query tuning, migrations
• Experience with GORM and/or Mongoose (or similar ORMs/ODMs) plus comfort dropping to raw SQL or aggregation pipelines when needed
• Frontend proficiency in React (TypeScript preferred), including state management and form-heavy admin UIs
• Good testing discipline (Go testing, Jest/Vitest, integration tests; frontend testing basics)
• REQUIRED: confident daily use of AI coding tools (Cursor/Copilot/etc.) with disciplined verification and secure practices

Nice to have

• Event-driven patterns: outbox, retries, idempotency, background jobs
• Experience with RBAC/policy engines, audit logs, fintech/compliance workflows
• Docker/Kubernetes familiarity
• CI/CD ownership (GitHub Actions/GitLab CI), release workflows
• Experience with high-security systems (custody, payments, identity)

Soft skills

• Ownership mindset: deliver features end-to-end with high quality
• Clear communication and ability to work across teams
• Pragmatic: balances long-term design with shipping
• Comfortable in ambiguity and fast iteration

• Competitive salary;
• Annual performance bonus;
• Fully remote position— work from anywhere in the world (team operates on CET);
• Paid time off, including vacation, sick leave, and public holidays;
• Multiple projects within the company— the opportunity to discuss different projects during the interview and choose the one that's the best fit for you.