About the Position

Senior.NET Developer

Senior Remote

Europe, Bulgaria, Poland, Portugal, Romania, Spain

Software Development, .NET, Angular, Engineering

Join Sigma Software as a Senior.NET Developer to contribute to scalable, cloud-native FinTech solutions. Collaborate with talented engineers and designers to deliver innovative financial technology.

At Sigma Software, we work with some of the most forward-thinking companies in the industry. This opportunity will let you grow professionally while making a tangible difference in a fast-paced, regulated environment.

Responsibilities

• Design, build, and deliver features and projects across C#,.NET Core, and Angular stack
• Write clean, maintainable, and well-tested code (unit/integration/e2e)
• Take ownership of features from requirements breakdown to deployment
• Deploy and monitor services in AWS cloud-native environments
• Handle production issues and incidents with accountability
• Collaborate with Product, Design, and Engineering teams in Agile practices
• Contribute to continuous improvement of systems and processes

Requirements

• 5+ years of experience in software development with strong OOP and system design skills
• Solid hands-on experience with .NET (C#) and Angular
• Understanding of software testing concepts and practices
• Expertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)
• Experience with relational and NoSQL databases
• Knowledge of non-functional requirements (performance, security, availability)
• Proven experience in FinTech, payments, banking, or regulated financial environments
• Upper-Intermediate English level or higher

Nice to Have

• Experience with Docker/Kubernetes
• Familiarity with event-driven architectures (Kafka, RabbitMQ)
• Proficiency with observability tools (Datadog or similar)
• Knowledge of domain-driven design (DDD) and complex domain modeling

We Offer

• Competitive salary
• Remote work options
• Professional development budget
• Health and legal support
• Continuous education and growth opportunities
• Flexible schedule
• Stylish and comfortable office
• Sports events and communities

About the Company

Our customer is a leading FinTech company providing embedded financing solutions for platforms and marketplaces. Their mission is to enable businesses to offer flexible credit products to customers, helping SMEs access funding quickly and efficiently.

The customer is recognized for innovation in embedded finance, serving thousands of businesses globally and partnering with major platforms. They operate in a regulated environment with a strong focus on scalability, performance, and security.

Key Technologies: C#,.NET Core, Angular 18, AWS, CI/CD, Docker/Kubernetes, Kafka/RabbitMQ, Datadog, relational & NoSQL databases

Why Join Us

• Diversity of domains and business
• Wide selection of technologies
• Medical and legal support
• Cool and vibrant community of professionals
• Continuous education and growth opportunities
• Flexible schedule
• Remote work
• Stylish and comfortable office (for your choice of where to work)
• Sports events and communities

REF4045C