Blockchain + Full Stack Engineer

Helio; London; On-site; GBP 70,000 - 90,000; Full time

Job summary

Join a leading web3 payments platform as a Blockchain + Full Stack Engineer. You will play a crucial role in building Helio's software platform, ensuring high-quality engineering while thriving in a fast-paced, innovative environment focused on crypto payments.

Benefits

Competitive pay with annual bonuses

MoonPay stock options

Qualifications

• 5+ years of software engineering experience in backend roles.
• 2+ years of blockchain development experience.

Responsibilities

• Help build and architect the foundation of the Helio software platform.
• Ensure high standards of code, logic, and engineering excellence.

Skills

Rust

Solidity

Node.js

TypeScript

JavaScript

Blockchain Development

CI/CD

APIs

Automation

Job description

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Our story

Blockchain is transforming online payments by enabling faster, cost-effective transactions without intermediaries. Helio’s mission is to make crypto payments accessible to all. As a leading web3 payments platform, we support over 6,000 merchants, developers, and millions of buyers with seamless crypto checkout for e-commerce, subscriptions, trading, and more. Our developer APIs power on-chain workflows across Solana, EVM & Bitcoin.

With crypto surpassing $3T in value, we connect businesses to digital natives via Helio branded checkouts and white labelled solutions including Solana Pay for Shopify, Magic Eden, and DEX Screener trading solutions. Founded in 2022 by Jim & Stijn, Helio was acquired by MoonPay in 2024 and operates independently as an innovation-driven team. We believe in a “builder culture”: shipping fast & enabling teams with autonomy.

Make sure to connect your crypto wallet at https://hel.io/ to try our product. We only interview candidates who have used our product and are eager to improve it.

You Will

You will help build and architect the foundation of the Helio software platform, ensuring high standards of code, logic, and engineering excellence. We aim to develop a platform led by engineering quality paired with pragmatic problem-solving, delivering financial-grade products.

Technical expertise is critical, but attitude matters even more. We seek individuals who thrive in uncertainty, are positive team players, and see solutions where others see problems. A passion for Web3, NFTs, and blockchain technology is essential.

Qualifications

• 5+ years of software engineering experience in backend roles, primarily using Rust, Solidity, Node.js, TS & JS in full-stack environments
• Fluency in Rust and Solidity or similar smart contract languages
• 2+ years of blockchain development experience
• Experience deploying smart contracts on major blockchain mainnets
• Contribution to a crypto project with significant token market cap is a plus
• Experience with CI/CD, APIs, security, cloud platforms, containers, deployment pipelines, A/B testing, Blue/Green deployments
• Passion for automation and defining infrastructure as code (IaC)
• Ability to troubleshoot complex system issues
• Ownership mindset to build, maintain, and improve systems
• Desire to learn, lead, help others, and add value daily

Benefits

• Competitive pay with annual bonuses
• MoonPay stock options

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Engineering and Information Technology