Backend Software Engineer
Wallee Group AG15 days ago
Vilnius, LithuaniaSenior
Responsibilities
- Design, develop, and maintain Java backend services running on AWS.
- Build and optimize data processing and reporting pipelines for large datasets.
- Use AWS services including S3, Athena, Lambda, SQS, Redshift, and RDS to build scalable and cost-efficient solutions.
- Own services in production, including monitoring, alerting, performance tuning, and incident response.
- Collaborate with product and engineering teams to deliver merchant-focused features.
- Participate in code reviews, technical design discussions, and continuous improvement of engineering practices.
Requirements
- Solid professional experience in Java backend development using Spring, Quarkus, or similar frameworks.
- Hands-on experience building and running workloads on AWS.
- Understanding of relational databases and SQL; PostgreSQL experience is a plus.
- Experience with distributed systems, message queues, or batch and stream data processing.
- A pragmatic focus on maintainability, testing, and delivering working software.
- Fluent command of English.
- A university degree in Computer Science or a closely associated discipline.
Benefits
- Hybrid work with three days per week in the Vilnius office, flexible daily hours, and four weeks of work from anywhere each year.
- Modern office in central Vilnius with fresh fruit, snacks, and high-quality coffee.
- Personal development budgets and a social calendar with company events.
- Flat hierarchy and opportunities to work with modern technology.
- Gross monthly compensation of €2,500–€4,000 depending on experience, seniority, and technical expertise.
About Wallee Group AG
Wallee Group AG builds an omnichannel payments platform for merchants, offering an online payment gateway, in‑store card terminals, and developer APIs to accept and reconcile payments across channels. It sells payment processing and related services on a transaction-fee basis, with plugins for common e‑commerce systems and support for multiple payment methods. The privately held company is headquartered in Winterthur, Switzerland, and operates across several European markets.