Integration Specialist (PSPs & GSPs)

Location: Remote (Europe time zones preferred)

Company: Fadir Technologies

Experience: Senior-level

Type: Full-time

About Fadir Technologies

Fadir Technologies is building a next-generation platform. Fast, modular, and designed for multi-brand scalability, on Cloudflare Edge with TypeScript, Workers, Durable Objects, D1, KV, and R2. Evolving beyond a legacy Laravel PHP / AWS monolith toward real-time, low-latency scalability.

The Role

Lead our third-party integrations roadmap with a focus on PSPs and GSPs. You’ll design, implement, and own resilient, secure, and well-documented integrations. Covering APIs, reconciliation, and certification, so product teams can move quickly with confidence.

What You’ll Do

• Own PSP & GSP integrations end-to-end: Discovery, technical scoping, implementation, certification, and production rollout.
• Implement robust API layers: Design and implement endpoints, workflows, and webhooks.
• Payments & transaction flows: Authorization/capture/refund/void flows, payout and settlement handling, reconciliation against provider reports, dispute/chargeback handling, and ledger consistency.
• Integration quality & reliability: Contract tests, provider simulators, automated e2e testing flows, observability, and alerting.
• Security & compliance: Secrets management, data minimization, audit logging, and alignment with relevant standards.
• Partner management: Coordinate with provider tech teams and oversee the integration process.

What You’ll Bring

• Experience building and maintaining third-party integrations at scale (preferably PSPs and/or GSPs).
• Strong TypeScript/Node.js skills.
• Understanding of Cloudflare Workers or similar distributed systems.
• Deep understanding of API design, transactional systems, idempotency, retries, and other resilience patterns.
• Experience with payments lifecycle, reconciliation, and secure handling of sensitive operations.
• Excellent partner-facing communication.
• Proven ability to turn partner docs into clean, well-tested integrations.

Nice to Have

• Background with monitoring and BI/reporting for settlements and fees.
• Prior work building internal SDKs.

How We Work

Remote-first with async-friendly collaboration; Europe time zones preferred for overlap.

Tech Stack:

• Backend: TypeScript / NodeJS • Cloudflare (Workers, D1, R2, Durable Objects) • Hono • Postgres
• Frontend: React • TypeScript • Material UI
• Infrastructure: Cloudflare, AWS (legacy hosting), Gitlab (source control, CI/CD, release management, task management)
• Legacy: Laravel PHP, Go