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Senior Full Stack Developer

Avance Consulting

 

Helsinki, Finland

Posted On: 15+ days ago
Experience: 8+ years
Availability: Hybrid
Openings: 1
Category: Senior Full Stack Developer
Tenure: No Preference/Any
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Description

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

Education

Any Graduate

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