Senior .NET Developer

Company Description Looking to take your .NET expertise to the next level while working on high-impact FinTech solutions? This role offers the chance to contribute to scalable, cloud-native systems that empower thousands of businesses worldwide. We’re seeking a Senior .NET Developer to join our team, collaborating with talented engineers, product managers, 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. CUSTOMER 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. PROJECT The project involves enhancing and expanding customer’s embedded finance platform, which integrates directly into partner services to deliver fast, flexible funding to SMEs. You’ll work on a modern tech stack, building features that improve customer and partner experiences while ensuring reliability in production. Key Technologies: C#, .NET Core, Angular 18, AWS, CI/CD, Docker/Kubernetes, Kafka/RabbitMQ, Datadog, relational & NoSQL databases Job Description Design, build, and deliver features and projects across C#, .NET Core, and Angular stackWrite clean, maintainable, and well-tested code (unit/integration/e2e)Take ownership of features from requirements breakdown to deploymentDeploy and monitor services in AWS cloud-native environmentsHandle production issues and incidents with accountabilityCollaborate with Product, Design, and Engineering teams in Agile practicesContribute to continuous improvement of systems and processes Qualifications 5+ years of experience in software development with strong OOP and system design skillsSolid hands-on experience with .NET (C#) and AngularUnderstanding of software testing concepts and practicesExpertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)Experience with relational and NoSQL databasesKnowledge of non-functional requirements (performance, security, availability)Proven experience in FinTech, payments, banking, or regulated financial environmentsUpper-Intermediate English level or higher WILL BE A PLUS Experience with Docker/KubernetesFamiliarity with event-driven architectures (Kafka, RabbitMQ)Proficiency with observability tools (Datadog or similar)Knowledge of domain-driven design (DDD) and complex domain modeling Additional Information PERSONAL PROFILE Growth mindset, curiosity, and proactivityStrong problem-solving skills balancing complexity and simplicityFeedback-oriented, open to giving and receiving constructive inputOwnership & accountability in delivering commitmentsTeam player with strong collaboration skillsAdaptability to changing prioritiesExcellent communication skills across disciplines