Blockchain Engineer

MoonPayPortugal, South Africa, Spain56 years ago

devopsFull-TimeMid Level

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Job Overview

Job Title

Blockchain Engineer

Company

MoonPay

Location

Portugal, South Africa, Spain

Job Type

Full-Time

Experience

Mid Level

engineeringsoftware-engineeringblockchain-engineerblockchain-software-engineerblockchain-engineeringblockchain-protocol-engineerblockchain-backend-engineerblockchain-security-engineerstaff-blockchain-engineerblockchain-devops-engineerblockchain-integration-engineer

About This Role

About MoonPay

Hi, we’re MoonPay. We’re here to onboard the world to the decentralized economy by making digital money move as universally and effortlessly as the internet.

Why?

Because crypto, stablecoins and blockchain aren’t just technologies. They’re tools for global financial empowerment. They give people and businesses more control over their money, their digital assets, and their future, opening access to legacy financial systems that have been out of reach for many.

What we do

MoonPay is a unified payments platform for digital currency. We make it easy for anyone, anywhere, to buy, sell, swap and pay in digital currencies as easy as sending an email. That simplicity is intentional, our focus is reducing complexity so people can participate confidently, without needing to be crypto experts. We power the entire flow between fiat and crypto end to end, with compliance, identity checks, fraud prevention, and settlement all built in. This end-to-end approach reflects how we work internally: with accountability, rigor, and trust built into everything we ship.

Proven at scale

Trusted by over 30 million customers and over 500 ecosystem partners, our secure, enterprise-grade platform is driving mainstream crypto adoption worldwide. Behind those numbers are millions of real people and organizations relying on MoonPay every day.

We collaborate with innovative brands and projects to build secure, scalable solutions for a blockchain-powered future. This is an opportunity to help shape systems, not just scale them. And we’re committed to doing it right. Fully licensed in the U.S. and regulated across the UK, EU, Canada, and Australia, because trust and compliance are non-negotiable.

But we’re just getting started. We’ve launched a consumer app that makes crypto accessible, intuitive, and usable for everyone, and it’s growing fast. We’re iterating every day to make it the best it can be.

If you believe financial freedom should be for everyone. If you believe in building a fairer, more open financial system - we want you with us. To build systems that benefit all, we need contributions from all, regardless of background.

Come build the future of payments and the decentralized economy with MoonPay. Let’s make financial freedom and autonomy the new normal.

About the Opportunity

Our Engineering team builds the technology that empowers MoonPay to innovate rapidly and scale

efficiently. We thrive in small, collaborative cross-functional teams of 4-6 engineers, working closely with

a dedicated Product Manager and Product Data Analyst. MoonPay is seeking individuals with experience

in developing blockchain applications and integrations to contribute to our expanding consumer and B2B

initiatives. Our focus areas include self-custody wallets, DeFi Trading, on-chain asset delivery, and

innovating on what the future of Web3 means.

What You Will Do

Transaction Infrastructure at Scale:
Design and improve high-volume transaction broadcasting pipelines
Manage transaction lifecycle
Detect, retry, rebroadcast, and safely recover stuck transactions
Wallet & Lifecycle Management
Contribute to wallet infrastructure and automation systems
Implement safe parallel transaction handling
Improve monitoring, observability, and operational guardrails
Design systems with financial correctness, reconciliation and auditability in mind
Cross-Chain & DeFi Integrations:
Build infrastructure supporting cross-chain and multi-step flows (fiat to on-chain and vice versa)
Handle non-atomic multi-step journeys across chains
Design state machines and recovery strategies for partial failure scenarios
Support routing mechanics and swap execution considerations, such as price impact, liquidity changes, including MEV awareness
Build reliable off-chain services that interact with on-chain contracts
End-to-End Engineering Ownership:
Participate in estimation, planning, and execution of projects, features, and integrations
Develop and maintain thoroughly tested, high-quality, and performant code
Collaborate closely with Product Managers to design scalable implementation strategies
Contribute to reliable, maintainable systems that evolve with product needs
Participate in incident response and post-mortems