Senior Software Engineer - VS Commercial Partners 80-100%

TWINT; Zürich; Hybrid; CHF 140,000 - 190,000; Full time

Benefits offered by this job

6 weeks vacation time

Flexible working hours

Home office option

Parental leave

Family allowances

Regular team events

Competitive compensation

Central Zurich/Bern offices

Job summary

TWINT is seeking Senior Software Engineers based in Zurich or Bern with the flexibility of a Home Office. Take technical ownership from development to testing and operations, and deliver high‑quality, scalable solutions in a modern payments environment.

You will work with Java/Java EE (WildFly, Spring Boot), RESTful APIs and testing with JUnit/Mockito/Testcontainers, and contribute to architecture decisions while improving performance and observability (Datadog/Kibana/Grafana).

Qualifications

• 10+ years of software engineering experience in complex environments.
• Excellent knowledge of Java/Java EE with WildFly and Spring Boot.
• Experience with SQL, JPA/Hibernate, Gradle, and Git.
• RESTful APIs testing with JUnit, Mockito, Testcontainers.
• Familiar with Kafka, Docker, Kubernetes; hexagonal architecture a plus.
• Understanding of Agile and DevSecOps practices.
• Fluent in English; German is a plus.
• Independent, collaborative team player.

Responsibilities

• Take technical ownership from development to testing and operations.
• Analyze complex problems and manage incidents with internal teams and partners.
• Translate business needs into robust, scalable technical solutions.
• Contribute to code reviews and focus on clean code.
• Contribute to architectural decisions and improve products, platforms, and services.
• Improve performance and observability using Datadog, Kibana, Grafana.
• Support teammates during sprints and foster continuous improvement.
• Evolve technology stack with emphasis on performance and reliability.

Skills

Java

Spring Boot

REST APIs

JUnit

Mockito

Testcontainers

SQL

JPA/Hibernate

Kafka

Docker

Kubernetes

Hexagonal Architecture

Agile

DevSecOps

English

German

Education

Bachelor’s or Master’s degree in computer science or related field

Tools

WildFly

Spring Boot

Gradle

Git

Docker

Kubernetes

Datadog

Kibana

Grafana

Job description

At TWINT, we believe that innovation should simplify our lives and coexistence. It should help us focus on the things that truly matter: the experiences that move us, the people close to us, and everything that brings us together. That's why we ensure that our daily lives continually become easier – because payment and everything around it gets seamlessly integrated into our lives. So that each one of us can make more out of the moment. For ourselves, for others, and for all of Switzerland.

The vision of the Value Stream Commercial Partners is to provide seamless integration and innovative services within the TWINT ecosystem, enabling merchants to effectively leverage TWINT, increase transaction volumes, enhance end‑customer experiences, and build enduring brand relationships

In pursuit of our vision, we are searching for Senior Software Engineers, based in Zurich or Bern with the flexibility of Home Office.

• Take technical ownership of new feature implementation – from development to testing and operations – to deliver high-quality results
• Analyze complex problems and manage incidents together with internal teams and partners, driving sustainable solutions
• Translate business needs into robust, scalable technical solutions
• Strong focus on clean code and active participation in code reviews
• Contribute to architectural decisions and the continuous enhancement of our products, platforms, and services
• Strengthen system performance and observability using tools such as Datadog, Kibana, or Grafana
• Support your teammates during sprints and foster continuous improvement within the team
• Contribute to the evolution of our technology stack and architecture, with a focus on performance, reliability, and scalability.

Your Profile:

• Bachelor’s or Master’s degree in computer science, software engineering, or a comparable field
• 10+ years of practical experience in software engineering within a business and technically complex environment
• Excellent knowledge of Java/Java EE with Wildfly and Spring Boot
• Familiar with SQL, JPA/Hibernate, Gradle, and Git
• Extensive experience with RESTful APIs and strong testing skills using JUnit, Mockito, and Testcontainers
• Exposure to modern architectural patterns (e.g., hexagonal architecture) and technologies like Kafka, Docker, and Kubernetes is a plus
• Understanding of Agile and DevSecOps practices
• Independent, reliable, and collaborative team player
• Fluent in English; German is a plus

What awaits you:

• Career and development: Shape your professional future through exciting tasks and challenges, as well as comprehensive further education opportunities in an innovative technology company.
• Work-life balance: Enjoy 6 weeks of vacation time and benefit from flexible working hours with the option to work from home.
• Balancing work and family: Benefit from additional perks such as increased family allowances and more parental leave.
• Team spirit and positive work atmosphere: Experience a collegial and healthy work culture, accompanied by regular events that strengthen collaboration.
• Fair and competitive compensation: At TWINT, we focus on a fair wage culture & fair pay. We also offer attractive additional benefits.
• Central locations: Our offices are located in the heart of Zurich and Bern and are easily accessible by public transport