N-iX is a global software development service company that helps businesses across the globe create next-generation software products. Founded in 2002, we unite 2,400+ tech-savvy professionals across 40+ countries, working on impactful projects for industry leaders and Fortune 500 companies. Our expertise spans cloud, data, AI/ML, embedded software, IoT, and more, driving digital transformation across finance, manufacturing, telecom, healthcare, and other industries. Join N-iX and become part of a team where your ideas make a real impact.
We are seeking a highly skilled and motivated Senior Full-Stack Engineer (Backend-Leaning) with 6+ years of professional experience to join our growing core engineering team. In this role, you will be instrumental in designing, scaling, and maintaining our enterprise-grade financial SaaS platform. While you will work across the full stack, your core strength and primary focus will be on building robust, high-performance backend systems using Java and modern enterprise frameworks.
Requirements & Qualifications- Experience: 6+ years of proven professional experience building robust B2B SaaS platforms or large-scale enterprise systems. Experience in the financial technology (FinTech) sector or building financial-grade systems is a strong plus.
- Core Backend Stack (Must-Have): Strong expertise in Java, Spring Boot, Axon Framework, PostgreSQL, Elasticsearch, and Apache Kafka.
- Testing Requirement (Must-Have): Proficiency in Groovy. Backend test coverage via Groovy is a mandatory part of the development process.
- Frontend Stack (Must-Have): Solid experience with Angular and TypeScript for building modern web applications.
- Infrastructure & DevOps (Must-Have): Hands-on experience with Docker Compose and Gradle.
- Nice-to-Haves: Working experience with Keycloak, SonarQube, OpenAPI/Swagger, SendGrid, and Playwright is a plus.
- Design, develop, and maintain secure, scalable, and resilient backend services using Java (OpenJDK), Spring Boot and Axon Framework.
- Architect and optimize relational databases (PostgreSQL) and structured search solutions using Elasticsearch.
- Develop responsive and clean user interfaces using Angular and TypeScript, ensuring seamless integration with backend REST APIs.
- Implement event-driven patterns and messaging queues using Apache Kafka to ensure high-throughput communication.
- Write and maintain comprehensive backend test coverage using Groovy. This is a strict, mandatory part of our development lifecycle.
- Manage identity and access management solutions by leveraging Keycloak for financial-grade security and authentication.
- Maintain high code quality through rigorous testing, code reviews, and analysis via SonarQube.
- Containerize applications using Docker and Docker Compose, and manage CI/CD deployment pipelines within the Azure Cloud ecosystem.
- Collaborate closely with cross-functional teams to define OpenAPI/Swagger specifications and integrate third-party services like SendGrid.
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
Skills Required
- 6+ years building B2B SaaS platforms or large-scale enterprise systems
- Strong expertise in Java (OpenJDK)
- Spring Boot
- Designing and building secure RESTful APIs
- Angular for frontend development
- Microsoft Azure cloud services experience
- Docker (and Docker Compose) containerization
- CI/CD pipeline experience
- PostgreSQL database architecture and optimization
- Elasticsearch structured search solutions
- Apache Kafka and event-driven/messaging patterns
- Code quality tools (SonarQube) and participation in peer reviews
What We Do
N-iX is a global software solutions and engineering services company that helps world’s leading organizations turn challenges into lasting business value, operational efficiency, and revenue growth using advanced technology. Whether you need to build a custom solution, modernize your digital product or acquire extra tech expertise - we have the experience and capabilities to ensure your success. With over 2,000 professionals in 25 countries across Europe and the Americas, N-iX offers expert solutions in cloud, data analytics, embedded software, IoT, AI, machine learning, and other tech domains. Being in business for over two decades, we have worked with dozens of industry-leading enterprises and Fortune 500 companies creating value across a wide variety of sectors, including finance, manufacturing, supply chain, retail, e-commerce, healthcare, and more. Our unique combination of business domain expertise and technical know-how enables us to effectively collaborate with ISVs, tech companies, and enterprises of all sizes. Thanks to the strong tech ecosystem and partnerships with AWS, GCP, Microsoft, SAP, OpenText, Snowflake, and others, we bring extra speed, scale and efficiency to more than 160 organizations across the globe. N-iX is recognized by numerous industry awards, such as CRN Solution Provider 500, Global Outsourcing 100 by IAOP, ISG Provider Lens™, Modern Application Development services providers by Forrester, etc
