Backend Software Engineer
Wallee Group AG2 months ago
Vilnius, LithuaniaMid Level
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 create 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-facing features.
- Participate in code reviews, technical design discussions, and continuous improvement of engineering practices.
Requirements
- Solid professional experience in Java backend development with Spring, Quarkus, or similar frameworks.
- Hands-on experience building and running workloads on AWS.
- Good understanding of relational databases and SQL; PostgreSQL experience is a plus.
- Experience with distributed systems, message queues, or batch and stream data processing.
- A maintainability-focused approach to testing and shipping working software.
- Fluent English communication skills.
- A university degree in Computer Science or a closely associated discipline is required.
Benefits
- Gross monthly compensation of €2,500–€4,000, depending on experience, seniority, and technical expertise.
- Hybrid work in Vilnius with three days per week in the office, flexible daily hours, and four weeks of work from anywhere each year.
- Personal development budgets and a social calendar with company events.
- Fresh fruit, snacks, and high-quality coffee.
- Modern office workspace and a flat organizational hierarchy.
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.