Senior Backend Engineer

Chrona agency; Barcelona; A distancia; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A fintech infrastructure company is seeking a Senior Backend Engineer to build compliant global stablecoin payment systems. The ideal candidate will have extensive experience with TypeScript and event-driven systems, integrating MPC custody, and driving critical services. This fully remote, full-time position offers fixed equity benefits and a focus on security in crypto payment rails.

Formación

• 7–12 years building production systems.
• 3+ years driving mission-critical services.
• Deep TypeScript backend expertise.
• Hands-on MPC custody integration experience.
• Professional English and strong communication skills.

Responsabilidades

• Build and launch the first cross-chain corridor.
• Implement policy-tracked execution with audit artifacts.
• Design and implement the complete payment lifecycle.
• Integrate MPC custody providers.
• Stand up observability: logs, metrics, dashboards.

Conocimientos

TypeScript

Event-driven distributed systems

PostgreSQL

CI/CD practices

Kubernetes

OAuth2

MPC custody flows

Descripción del empleo

Senior Backend Engineer

We are looking for a Senior Backend Engineer ( / TypeScript) to join a fintech infrastructure team building the next-generation compliance and routing layer for licensed financial institutions essentially a SWIFT for stablecoins.

This product powers regulated cross-chain and cross-stablecoin value transfer for institutional clients including banks, PSPs, exchanges and compliant crypto wallets.

The core mission

• Secure & fast cross-chain transfers
• Institutional-grade stablecoin rails
• Full Travel Rule (IVMS-101) alignment
• Audit-ready transparency and policy enforcement

This is a centralized-by-design rails layer; not a bridge or a DEX.

Think audited controls, deterministic policy engines, strict SLAs, MPC custody integrations and production‑grade financial infrastructure.

You will architect and ship systems where real money moves and real risks exist.

Why this matters now

Institutional stablecoin adoption is scaling rapidly as banks and regulated players move from pilots to production.

This team is building the backbone for that evolution – a secure, policy‑driven execution layer for compliant global stablecoin settlement.

You will design and deliver the rails that enable this industry shift.

What you'll own

• Build and launch the first cross‑chain corridor: USDC (Circle CCTP) and Tron USDT
• Implement policy‑tracked execution with audit artifacts
• Design and implement the complete payment lifecycle (intent settlement)
• Integrate MPC custody providers (Fireblocks, Copper, Palisade, Utila)
• Handle CCTP flow attestations and proof handling
• Listen to Tron & EVM events and finalize settlement logic
• Build treasury controls, float‑monitoring and rebalancing logic
• Architect an intent ledger & reconciliation layer (no state drift)
• Deliver idempotent APIs, error taxonomies, retries, timeouts
• Stand up observability: logs, metrics, dashboards, SLOs
• Ship evidence bundles & webhook delivery 99.9% SLO
• Define engineering best practices & help hire senior backend peers

Tech & Concepts

• TypeScript (must)
• Event‑driven distributed systems
• PostgreSQL (indexes, replication, migration strategy)
• CI/CD, SRE practices, SLIs / SLOs
• Kubernetes / ECS, Terraform
• OAuth2, mTLS, Secrets management, KMS
• Idempotency ledgering, consistency models
• Webhooks, retries, backoff, circuit breakers
• MPC custody flows and key policies (Fireblocks, Copper, Utila, Palisade)

Requirements

• 7–12 years building production systems
• 3+ years driving mission‑critical services or leading technical delivery
• Previous experience in CEX custody, PSP or core‑banking stack
• Deep TypeScript backend expertise
• Built & operated event‑driven systems at scale
• Hands‑on MPC custody integration experience
• Designed systems where funds are at risk
• Professional English, strong communication skills
• Experience working in international teams

Nice to have

• Travel Rule / IVMS‑101 familiarity
• Exposure to DEX routing logic (slippage, MEV limits)
• Treasury / liquidity systems rebalancing models
• Strong security mindset & audit exposure

First 90‑Day Success Criteria

• USDC (CCTP) & Tron USDT corridor live
• 99.95% payout success post‑finality
• p95 settlement
• Evidence bundle delivery 99.9% SLO
• Zero drift between on‑chain receipts & intent ledger
• Treasury utilization 60–70% with safe rebalancing triggers

About the role

• Fully remote
• Full‑time

Compensation

Fixed equity (0.5%–1.5%)

4‑year vesting, 1‑year cliff

3‑month probation

Closing statement

If you’re excited to build institutional‑grade crypto payment rails and ship systems where reliability, correctness and compliance matter, we’d love to speak with you.

Key Skills

• Business Intelligence
• Bidding
• Accounts Assistant Credit Control
• Account Development
• Content Development
• Lab Testing

Employment Type

Full Time

Experience

Years

Vacancy

1