Backend Developer

Company Description Join a project that helps pharmaceutical companies and researchers accelerate medicine development through modern computational modeling solutions. We are looking for a Middle Backend Developer who is passionate about building scalable systems and contributing to products with real-world impact. You will work with a Sweden-based Customer in an international distributed team, developing a modern platform for storing, visualizing, and analyzing scientific models. The role combines Back-end development, architecture discussions, and collaboration with cross-functional teams in a SAFe Agile environment. We at Sigma Software offer the opportunity to work with modern technologies, communicate directly with stakeholders, and contribute to a meaningful healthcare-related product while growing your technical expertise in microservices and cloud-native development. CUSTOMER Our Customer is a Sweden-based company operating in the pharmaceutical and life sciences domain. The company develops advanced solutions that help pharmaceutical organizations and researchers optimize medicine development processes through mathematical and computational modeling technologies. The platform also supports technical and regulatory workflows, enabling secure and scalable collaboration with scientific data and models. PROJECT The project is a modern web platform for uploading, storing, visualizing, and analyzing mathematical and computational models used in pharmaceutical research and drug development. The solution helps researchers improve collaboration, increase model traceability, and support regulatory compliance activities. The system is based on a microservices architecture with scalable APIs, event-driven communication, containerized infrastructure, and secure authentication mechanisms. The team actively participates in SAFe Agile processes, architecture discussions, and continuous delivery initiatives. Key Technologies: TypeScript, Node.js, NestJS, Next.js, PostgreSQL, Docker, Kubernetes, NATS.io, Keycloak, Python, R Job Description Coming up with well-designed technical solutions and robust codeDevelop new features and components, refactoring, debugging, and maintaining softwarePeer code reviews, following engineering practicesPerform unit and integration testingAnalyze requirements and prepare detailed design for the featuresCreate Technical documentationParticipate in conference calls and face-to-face meetings with the CustomerBe active member of SAFe, take part in estimation, grooming and planning sessions Qualifications 3+ years of commercial software development experienceStrong hands-on experience with JavaScript and TypeScriptSolid experience with Node.js and NestJSProven experience with Next.js in production environmentsGood understanding of scalable API design principlesExperience with PostgreSQL or similar relational databasesPractical experience with Docker and KubernetesExperience with NATS.io or similar event-streaming technologiesExperience integrating IAM/SSO solutions such as KeycloakStrong understanding of microservices architecture and event-driven systemsExperience with RESTful APIs and service-to-service communicationUnderstanding of application security best practicesFamiliarity with CI/CD pipelines and Git workflowsStrong analytical and problem-solving skillsAbility to work independently and collaboratively in cross-functional teamsUpper-Intermediate English level or higher WILL BE A PLUS Experience in pharmaceutical, healthcare, or life sciences domainsExperience working with Python and RExperience with scientific or analytical platformsKnowledge of regulatory or compliance-driven environmentsExperience with cloud platforms and distributed systemsUnderstanding of data visualization solutions Additional Information PERSONAL PROFILE Strong communication and collaboration skillsProactive and self-driven mindsetAbility to work in a fast-changing environmentAttention to quality and engineering standardsOwnership mindset and willingness to contribute beyond assigned tasks