Tech Lead, Payment Modules & Acquirer Integrations

Wallee Group; Winterthur; Hybrid; CHF 180,000 - 240,000; Full time

Benefits offered by this job

Remote-friendly structure

Flat hierarchies

4 weeks Remote Working per Year

Team events

Personal growth opportunities

Job summary

Wallee seeks a senior engineering leader to own the architecture and technical direction of our payment modules, connecting our platform to acquirers and schemes. You will lead a distributed squad across Switzerland, Lithuania and Ukraine, driving end‑to‑end integrations, platform evolution and engineering standards.

You will partner with the Head of Engineering and Product Manager to balance new features with reliability, reduce technical debt, and ensure mission‑critical payments are

Qualifications

• 10+ years of software engineering experience, including 3+ years leading a team.
• A university degree in Computer Science or a closely associated discipline is required.
• Deep Java and Spring expertise. Comfortable with a custom framework built on Spring.
• Strong command of Hibernate/JPA and relational database performance (PostgreSQL).
• Hands‑on experience with microservices: service boundaries, APIs, asynchronous messaging, failure modes and day‑2 operations.
• Payment industry experience: acquirer or scheme integrations, authorization, capture, refund and chargeback flows, 3‑D Secure, PCI DSS awareness. Exposure to ISO 8583 or ISO 20022 is a plus.
• A track record of reducing technical debt in production systems without stopping delivery.
• Software architecture skills: system design, ADRs, trade‑offs, and design reviews.

Responsibilities

• Own architecture and technical roadmap of the payment modules and integrations.
• Lead end-to-end acquirer integrations: analysis, design, implementation, certification, rollout and monitoring.
• Manage technical debt with a large, mature codebase on top of Spring framework.
• Drive platform evolution: Java 21 today, moving to Java 25, and event-driven, fault‑isolated services.
• Set and uphold engineering standards: design reviews, code quality, automated testing, observability.
• Lead, coach and grow a distributed squad across Switzerland, Lithuania and Ukraine.
• Run 1:1s, provide feedback, create development plans and support career growth.
• Hire and onboard engineers with Head of Engineering, build knowledge sharing.
• Own production quality: monitoring, alerting, incident response and root cause analysis.

Skills

Java & Spring

Team leadership

Architectural design

Microservices

PostgreSQL performance

AWS & Kubernetes

Payment industry knowledge

ADR writing

Operational incident management

English communication

Education

University degree in Computer Science

Tools

Hibernate/JPA

PostgreSQL

AWS

Kubernetes

Job description

Wallee seeks a senior engineering leader to own the architecture and technical direction of our payment modules, connecting our platform to acquirers and schemes. You will lead a distributed squad across Switzerland, Lithuania and Ukraine, driving end‑to‑end integrations, platform evolution and engineering standards.

You will partner with the Head of Engineering and Product Manager to balance new features with reliability, reduce technical debt, and ensure mission‑critical payments are