Backend Engineer, Fintech & Web3 | EMEA

DeepL
5 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Intermediate

Job location

Remote

Tech stack

Query Performance
Accounting Systems
API
Software as a Service
Software Design Patterns
PostgreSQL
Object-Oriented Software Development
Blockchain
SQL Databases
TypeScript
Web 2.0
AWS Lambda
Backend
Stripe
Low Latency
Ethereum
Solidity
Web3.js
Front End Software Development
Api Design
Pagination
Serverless Computing

Job description

  • Collaborate in a Cross-Functional Team - working with frontend engineers, PMs, designers, and QA to deliver seamless financial experiences.

  • Participate in Product Planning - contribute to discovery, scoping, technical design, and deployment.

  • Develop and Enhance Features - build robust APIs, workflows, and fintech capabilities; fix bugs at "Deel Speed."

  • Deliver Customer-Centric Engineering - ensure reliability, clarity, and excellent user experience.

  • Solve Complex Fintech Problems - build ledger-driven systems across payments, payroll, treasury, and compliance.

  • Build for Scale - design services handling high-volume, multi-currency transactions with safety, concurrency, and idempotency.

  • Web3 / On-Chain Financial Infrastructure You will help lay the foundation for Deel's future on-chain capabilities, including:

  • Enable on-chain payroll & settlements using stablecoins and trust-minimized flows.

  • Integrate APIs from leading Web3 partners (custodians, on/off-ramps, networks, compliance vendors).

  • Contribute to smart contracts that power real financial operations (escrow, payouts, invoicing, treasury automation).

  • Work with modern blockchain dev stacks: Ethereum, Solidity, Truffle/Hardhat, L1/L2 frameworks (Arbitrum, Base, Polygon, Optimism, etc.)

  • Design hybrid Web2 Web3 architectures connecting Deel's ledger, banking rails, and chain-based flows.

Requirements

Do you have experience in TypeScript?, * Professional experience in fintech or financial systems: payments, banking, accounting, exchanges, payroll, or crypto.

  • Experience working in or building systems for companies like Wise, PayPal, Stripe, Adyen, Coinbase, Revolut, etc.
  • Proficiency in Node.js & TypeScript, plus at least one additional backend language.
  • Deep SQL expertise (PostgreSQL preferred): query performance, schema design, migrations.
  • Strong foundation in OOP and design patterns.
  • Experience building high-throughput, low-latency and idempotent systems.
  • API development expertise: validation, JWT auth, pagination, rate-limiting, event/queue-driven architectures.
  • Experience in compliance-sensitive environments (KYC, AML, transaction monitoring).
  • 4+ years of backend or full-stack engineering experience.

Bonus Points

  • Experience with Solidity, smart contracts, Truffle/Hardhat, EVM development, or L1/L2 scaling frameworks.
  • Built or integrated custodial wallets, exchanges, or on/off-ramp processes.
  • Experience with treasury, FX, reconciliation, or accounting systems.
  • Familiarity with serverless architectures (AWS Lambda).
  • Worked on SaaS platforms operating 24/7 at large scale.
  • Exposure to SOC2 / SOX controls and audit-driven systems.

Benefits & conditions

  • Enjoy owning problems end-to-end: design implementation quality reliability.
  • Communicate clearly across engineering, product, compliance, and finance.
  • Thrive in async, distributed teams.
  • Care deeply about user value, business outcomes, and clean technical execution.
  • Embody Deel's core value of Genuine Care - for teammates, customers, and quality.

Total Rewards

Our workforce deserves fair and competitive pay that meets them where they are. With scalable benefits, rewards, and perks, our total rewards programs reflect our commitment to inclusivity and access for all.

Some things you'll enjoy

  • Stock grant opportunities dependent on your role, employment status and location
  • Additional perks and benefits based on your employment status and country
  • The flexibility of remote work, including optional WeWork access

About the company

Helping people overcome communication barriers is the heart of what we do. Founded in Germany in 2017 by a team of engineers and researchers, DeepL has developed the world’s most accurate AI translation technology—enabling real-time, human-sounding translation.

Accessible via a web translator, browser extensions, desktop and mobile apps, and an API, DeepL supports a best-in-class translation experience in 34 languages and counting. Our 550-person team operates across four European hubs in Germany, the Netherlands, the UK, and Poland.

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