Integration Engineer

🕒 July 22

🇬🇧 United Kingdom – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

💻 Solutions Engineer

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Wirex

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2014

💳 Fintech

🌐 Web 3

🏦 Banking

💰 Series B on 2021-12

Fintech • Web 3 • Banking

Wirex is a financial technology company that provides a range of services for managing cryptocurrencies and traditional financial assets. Established in 2014, Wirex has supported over 6 million customers worldwide and processed transactions exceeding $20 billion. It offers products such as the Wirex card, which allows users to earn up to 8% Cryptoback™ rewards on transactions, and X-Accounts, which offer up to 16% interest on certain currencies. Wirex's platform supports various digital assets and stablecoins, providing a secure and simple way to earn, trade, and manage money in the Web3 ecosystem. Additionally, Wirex provides a free and instant cross-chain bridge for stablecoins and crypto and offers the unique capability to borrow stablecoins starting at 0% APR. The company is committed to pioneering global payment innovations and offers a robust infrastructure for digital asset management, catering to both individual and institutional needs.

📋 Description

• End-to-end technical onboarding of new partners, from initial integration kickoff to production go-live. • Ongoing technical support for partners throughout their lifecycle with Wirex Pay. • Partner system integration with Wirex Pay BaaS: API endpoints, smart wallet provisioning, wrapped stablecoin flows (WUSD/WEUR), and card infrastructure. • Guidance on optimal integration patterns to help partners scale efficiently and securely. • Participation in pre-sales and technical discovery calls, explaining integration options and platform capabilities. • Support for L1 Support team on technical and integration-related escalations. • Lead the full integration process for new B2B partners , ensuring smooth onboarding and timely launches across both API and on-chain touchpoints. • Act as the primary technical point of contact for partners , supporting them with API documentation , smart wallet integrations, and blockchain-specific queries. • Conduct UAT and certification checks to validate transaction flows , wallet operations , and compliance requirements. • Identify , troubleshoot , and resolve technical issues during integration , including debugging API calls , webhook failures, and on-chain transaction. • Maintain , update , and continuously improve integration guides , API documentation , and technical runbooks. • Work closely with engineering , product , and commercial teams to align technical delivery with business objectives.

🎯 Requirements

• 3+ years of experience in a technical support , technical account management , or integrations-focused role. • Strong understanding of REST APIs , JSON, and webhooks. • Hands-on experience with API testing tools ( Postman / Insomnia or similar). • Familiarity with blockchain concepts : wallets , transactions , EVM basics , and token standards (ERC-20). • Experience with blockchain analysis via explorers. • Understanding of account abstraction , smart wallets /MPC wallet infrastructure. • Experience with stablecoins , payment rails , or fintech / crypto products background. • Experience using log management tools to investigate and debug issues. • Ability to explain complex technical concepts clearly to both technical and non-technical stakeholders. • Strong written and verbal communication skills in English ( Upper-Intermediate or higher). • Ownership mindset : you care about results and long-term partner success. • Ability to work independently , prioritize effectively , and stay focused on outcomes.

🏖️ Benefits

• Premium tariffs for Wirex product • Semi-remote work with flexible hours—work from home or office. • Home office allowance. • Virtual share options scheme after the probation period. • Health insurance coverage after the probationary period. • Generous vacation policy: 20 business days of paid leave. • Paid sick leave , Birthday , and Anniversary leave. • Length of Service Holidays. • Engaging in online events for learning and enjoyment. • PE accounting and support.