Senior Application Developer - Remote(f/m)

Ramps, Deposits, Swaps, and Virtual Accounts.

You will sit within the Solutions Engineering team, part of the broader Partner Success Operations team, and work closely with Payments Ops, KYB/KYC, Fraud, Product, and Engineering teams day to day.

Your work will directly impact partner time‑to‑go‑live, integration quality across MoonPay’s active partners, and the health of integrations for some of the most recognized brands in crypto.

Support each partner’s technical integration from sandbox testing through launch and into production – translating requirements into integration plans covering API, SDK, webhook, and widget paths.

Conduct pre‑go‑live reviews to verify acceptance criteria compliance, disclaimer implementation, and integration quality ahead of partner launches.

Investigate volume anomalies flagged by Payment Ops – trace root causes across integration changes, traffic shifts, and configuration issues.

Support technical discovery and demo calls for both engineering and business audiences alongside senior SEs and the Partnerships team.

Manage partner API keys, sandbox accounts, and test environments; You don’t wait to be told where the problem is – you find it, debug it, and loop in whoever needs to be involved to fix it. You are curious about crypto and payments infrastructure – not just as a job requirement, but because you find it genuinely interesting.

4-5 years in Solutions Engineering, Integration Engineering, Developer Relations, Technical Account Management, or a similar technical partner‑facing role.

• Basic scripting ability in Python, JavaScript, or similar – for building demos, automating tests, or contributing to internal tooling.
• Familiarity with AI coding tools like Claude Code, Cursor or Codex.
• Some exposure to payments infrastructure: fiat rails, crypto on/off‑ramps, settlement flows, or similar – FinTech or crypto context preferred.
• Highly organized with the ability to manage several integration projects simultaneously without dropping the ball.
• Based in Europe with the right to work in your country of residence (no visa sponsorship available).

Familiarity with blockchain concepts: wallets, gas, stablecoins, transaction confirmation and signing.

Experience with B2B SaaS or FinTech integrations – virtual accounts, BaaS, embedded finance.

Exposure to KYB/KYC onboarding flows and identity verification platforms (e.g., You have integrated a third‑party payments SDK or API and shipped it to production – and can talk through what went wrong.

You have experience at a crypto payments infrastructure company (on/off‑ramp, virtual accounts, stablecoin rails, or similar).

You have tested and built a working demo using one or multiple MoonPay products in sandbox or production.

Pay for performance equity bonus : Unlimited holidays : Hybrid working schedule : Work fully remotely or your nearest Moonbase, the choice is yours.

Annual training budget : We support your training journey every step of the way.

Home office setup allowance : Create the home office of your dreams.

Remote working allowance : Those working fully remotely get a little extra for utilities.

Monthly budget to spend on our products and zero‑fee crypto transactions : Regular remote company offsites : MoonPay is also committed to providing reasonable accommodations in our job application procedures for qualified individuals with disabilities.