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Helsinki, Finland
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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 applications
Architect scalable, secure, and high-performance solutions
Develop modern, responsive front-end interfaces
Design and implement robust back-end services and APIs
Own database design, performance tuning, and data integrity
Review code, enforce best practices, and mentor team members
Collaborate with Product, UX, DevOps, and QA teams
Drive technical decisions and participate in solution design discussions
Ensure 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
Any Graduate
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