Freelance Senior (.NET) Software Engineer (B2B Contract) at WISE INTEGRATION (Vilnius, Lithuania)
WISE INTEGRATION· Vilnius, Lithuania· €50–€60/hr·
Role details
Salary
€50–€60/hr
Work type
Remote
Job description
Location: Vilnius, Lithuania — preferably hybrid, or remote within the EU / UK
Contract period: 1 October 2026 – 31 December 2026
About the Role
We are looking for an experienced .NET Software Engineer to join a mature, highly skilled squad working on a modern, distributed banking platform.
You will contribute to the design and development of a scalable, reliable, and secure solution built around native AWS services and high-criticality data pipelines.
Key Responsibilities
- Design and develop robust enterprise applications using .NET 10.
- Build modern, distributed solutions leveraging native AWS services.
- Develop highly scalable and reliable solutions for high-criticality data pipelines.
- Contribute to maintaining high standards of software quality, performance, and security.
- Investigate and resolve incidents, bugs, and production issues.
- Work effectively within a self-organizing Scrum team and contribute to an agile way of working.
- Create and maintain comprehensive technical documentation where required.
- Collaborate closely with software architects, engineers, business analysts, and other stakeholders.
- Contribute to the development of a modern, robust, and secure banking platform.
- Stay current with emerging technologies and contribute to continuous technical improvement.
Requirements
- 3–5+ years of professional experience developing and delivering robust enterprise products or applications.
- Strong experience with .NET 10 / C#.
- Thorough understanding of cloud technologies, particularly AWS, including services such as:
- AWS Lambda
- Amazon S3
- Amazon SQS
- AWS Step Functions
- Amazon DynamoDB
- and other native AWS services.
- Experience with GitHub Enterprise.
- Hands-on experience with CI/CD automation.
- Experience with Infrastructure as Code (IaC), particularly Terraform.
- Experience working in Agile / Scrum environments.
- Bachelor's degree or higher in Engineering, Computer Science, or a related field.
- Upper-Intermediate English (B2+), both written and spoken.
Nice to Have
- Experience with enterprise-grade data platforms, particularly Databricks.
- Experience with message streaming / queueing platforms such as Apache Kafka.
- Experience working with distributed systems and high-volume data processing.
- Previous experience in banking or other highly regulated environments.
What You Can Expect
- Work alongside a mature team of highly skilled technology professionals.
- Opportunity to work with modern .NET and AWS technologies.
- Exposure to distributed systems and high-criticality data platforms.
- A self-organizing Scrum environment with a strong engineering culture.
- Collaboration with experienced architects, engineers, and business analysts.
- Opportunity to contribute to a modern banking platform where reliability, security, and scalability are critical.
Why work at WISE INTEGRATION
- Culture: Emphasizes innovation, respect, diversity, and service. Described as “stimulating, supportive, collaborative, and inclusive” with a global team encouraged to contribute.
- Work Policy: Hybrid workspace (employees combine remote and on-site work). Typical on-site presence expected.
- Team & Growth: Fast-growing deeptech startup with a small, cross-functional team (30–40 people) across three continents. Opportunity to have high impact.
- Locations: Offices in Hyères and Grenoble (France), Ottawa (Canada), and Taipei (Taiwan). International exposure.
- Tech Stack: Work with C, Python, LabVIEW, MATLAB, Altium, Linux, and signal processing tools.