Senior Full Stack Developer

Role: Senior Full Stack Developer Location: Helsinki, Uusimaa, Finland Experience: 8+ years Role Summary: We are seeking an experienced Senior Full Stack Developer to lead the design, development, and delivery of scalable, high-quality web applications involved in identification service, customer feedback, media bank, store marketing etc. This role requires strong technical expertise across front-end and back-end technologies, architectural thinking, and the ability to mentor junior developers while collaborating with cross-functional teams. Key Responsibilities: Lead end-to-end development of complex web applicationsArchitect scalable, secure, and high-performance solutionsDevelop modern, responsive front-end interfacesDesign and implement robust back-end services and APIsOwn database design, performance tuning, and data integrityReview code, enforce best practices, and mentor team membersCollaborate with Product, UX, DevOps, and QA teamsDrive technical decisions and participate in solution design discussionsEnsure high standards of security, reliability, and maintainability Key Qualities: Required Skills Programming: Java, TypeScript, JavaScript, Python Framework & Libraries: Ant Design, Apache HTTP Client, Apache Tika, Azure SDK, Class Variance Authority, D3.js, Elasticsearch Java Client, Express, Fastify, Freemarker, Google Cloud Speech, Hapi, Hibernate Validator, Jackson, Jersey, Jersey (JAX-RS), Knex, Lombok, Lottie React Player, Lucide React, Material UI, MobX, Next.js, Nimbus JOSE JWT, Node.js, OkHttp, QueryDSL, React, React Hook Form, React Router, Redux Toolkit, Spring Boot, Spring Framework, Spring Web MVC, SpringDoc OpenAPI, Styled Components, Swagger, Tailwind CSS, TypeORM, Vite, Zod Databases: MySQL, Redis, PostgreSQL, Azure Cosmos DB Development Tools: Babel, Concurrently, ESLint, Git, Git Bash, HeidiSQL, Husky, IntelliJ IDEA, Knex, Lint-Staged, Maven, Node.js, Nodemon, npm, NVM (Node Version Manager), OpenSSL, Parcel, pgAdmin, PostCSS, Postman, Prettier, Pylint, Rollup, ts-node, TypeORM, Vite, VS Code Cloud Platforms: Azure, Auth0, AWS, Teams, Google Cloud Platform, Heroku DevOps & CI/CD: AWS CDK, AWS CLI, Azure CLI (az), Azure DevOps Pipelines, Commitizen, Commitlint, Development Tools, Docker, Docker Compose, Frontend Maven Plugin, Git Bash, GitHub, Heroku CLI, Husky, Java (JDK), Jenkins, lint-staged, Maven, Maven Build, Node.js, npm, npm Scripts, NVM (Node Version Manager), pgAdmin, Postman, Python, Serverless Framework, Terraform, Visual Studio Code Testing Tools: AssertJ, Chai, Jest, Jest (Frontend testing), Jest Coverage / Cobertura Reports, Jest Extended, JUnit, Mocha, Mockito, Nock (API mocking), Playwright (E2E Testing), React Testing Library, Robot Framework, Selenium, SonarQuibe, Spring Boot Test, Supertest, Testing Library (React), ts-jest Collaboration & Project Management: Jira, Confluence, Slack, Teams Monitoring & Observability: Site24x7, Azure Application Insights, Auth0 logs, CloudWatch, Dynatrace, AWS CloudWatch, Heroku Papertrail Other Tools & services: 1Password, Apache Commons, Blipp, Boto3, Bouncy Castle, Bynder SDK, CSV Processing, Date-fns / Date-fns-tz, Elasticsearch, Google Tag Manager, GS1 Synkka, Hapi Swagger, Imgix, JAVE, JOSE, JWT / JSON Web Tokens, LiquidJS Templating, NFlow (workflow engine), OneTrust, OpenAPI, OpenID Connect, pg8000, Postmark (Email Service), PySpark, reCAPTCHA / hCaptcha / Cloudflare Turnstile, REST APIs, SNS Validator, SSH2, Swagger Express, Swagger UI, VRK Service Integration What we offer / What’s in it for you: Innovative Projects: Work on high-impact projects that drive business insights and transformation.Professional Growth: We encourage learning and development, with opportunities to deepen your expertise in cutting-edge data engineering tools and platforms.Collaborative Culture: Join a team that values collaboration, innovation, and the power of data. About TCS Tata Consultancy Services is a digital transformation and technology partner of choice for industry-leading organisations worldwide. Since its inception in 1968, TCS has upheld the highest standards of innovation, engineering excellence and customer service. Rooted in the heritage of the Tata Group, TCS is focused on creating long term value for its clients, its investors, its employees, and the community at large. With a highly skilled workforce of over 607,000 consultants in 55 countries and 180 service delivery centres across the world, the company has been recognized as a top employer in six continents. With the ability to rapidly apply and scale new technologies, the company has built long term partnerships with its clients – helping them emerge as perpetually adaptive enterprises. Many of these relationships have endured into decades and navigated every technology cycle, from mainframes in the 1970s to Artificial Intelligence today. TCS sponsors 14 of the world’s most prestigious marathons and endurance events, including TCS Lidingöloppet, TCS London Marathon and TCS Amsterdam Marathon with a focus on promoting health, sustainability, and community empowerment. TCS generated consolidated revenues of over US $30 billion in the fiscal year ended March 31, 2025. How to Apply: Send your CV together with the motivation letter to saiswetha.c@tcs.com. We will go through the applications on an ongoing basis. Privacy Note: https://ibegin.tcs.com/iBegin/privacy-notice