Backend-leaning senior full-stack engineer for B2B SaaS: design and build secure, scalable Java (OpenJDK)/Spring Boot services on Azure, architect PostgreSQL and Elasticsearch, implement Kafka messaging, develop Angular frontends, containerize with Docker/Docker Compose, maintain CI/CD and SonarQube quality, and collaborate with the Chief Architect.
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- 6+ years of proven professional experience building robust B2B SaaS platforms or large-scale enterprise systems.
- Strong expertise in Java, Spring Boot, Apache Kafka
- Proficiency in Groovy
- Solid experience with Angular and TypeScript for building modern web applications.
- Hands-on experience with Docker Compose and Gradle.
- Design, develop, and maintain secure, scalable, and resilient backend services using Java (OpenJDK), Spring Boot.
- 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.
Nice to have
- Experience with Axon Framework
- Experience in the financial technology (FinTech) sector or building financial-grade systems
- Experience with PostgreSQL, Elasticsearch
- Working experience with Keycloak, SonarQube, OpenAPI/Swagger, SendGrid, and Playwright
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
Similar Jobs
Artificial Intelligence • Machine Learning • Natural Language Processing • Software • Conversational AI
The Pre-Sales Solutions Engineer leads technical discovery, designs and executes POCs, advises on architectural needs, triages issues, and collaborates with teams to ensure customer success and continuous engagement throughout the project lifecycle.
Top Skills:
DockerHTTPJavaScriptKubernetesPythonSipTypescriptWebrtc
Artificial Intelligence • Machine Learning • Natural Language Processing • Software • Conversational AI
The Solutions Architect will lead enterprise deployments, ensure technical success for customers, and contribute to product improvements. Responsibilities include architecture design, post-sales support, technical problem-solving, and customer engagement.
Top Skills:
DockerJavaScriptKubernetesPythonRust
Artificial Intelligence
Build and maintain the full-stack Publish platform: design scalable APIs and SDKs, enable AI-driven content workflows, ensure reliable visual CMS rendering across diverse customer stacks, lead technical direction, and drive high-quality, customer-focused launches.
Top Skills:
APIsAWSGCPGraphQLNode.jsReactRestSdksTypescript
What you need to know about the Boston Tech Scene
Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.
Key Facts About Boston Tech
- Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
- Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
- Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
- Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories
