Full-stack developer with 11+ years in a single product company, owning development from front-end architecture through testing, QA, DevOps, and customer support. Since 2024, my focus has been broader full-stack responsibility for a tax optimization SaaS, covering end-to-end delivery from idea to implementation and feedback. At Bronex Software Oy, I’ve taken high-ownership roles due to the small team: designing and maintaining CI/CD pipelines with automated testing, building internal tools and integrations (invoicing, admin status tracking, sales-offer flows), and delivering a consistently high UX standard across critical user journeys.…

Janne Puhakka

Full-stack developer with 11+ years in a single product company, owning development from front-end architecture through testing, QA, DevOps, and customer support. Since 2024, my focus has been broader full-stack responsibility for a tax optimization SaaS, covering end-to-end delivery from idea to implementation and feedback. At Bronex Software Oy, I’ve taken high-ownership roles due to the small team: designing and maintaining CI/CD pipelines with automated testing, building internal tools and integrations (invoicing, admin status tracking, sales-offer flows), and delivering a consistently high UX standard across critical user journeys.…

Available to hire

Full-stack developer with 11+ years in a single product company, owning development from front-end architecture through testing, QA, DevOps, and customer support. Since 2024, my focus has been broader full-stack responsibility for a tax optimization SaaS, covering end-to-end delivery from idea to implementation and feedback.

At Bronex Software Oy, I’ve taken high-ownership roles due to the small team: designing and maintaining CI/CD pipelines with automated testing, building internal tools and integrations (invoicing, admin status tracking, sales-offer flows), and delivering a consistently high UX standard across critical user journeys.

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Skills

Experience Level

TypeScript
Expert
JavaScript
Expert
Node.js
Expert
API
Expert
Express
Expert
MongoDB
Expert
Docker
Expert
AWS
Expert
Azure
Expert
MySQL
Expert
GraphQL
Intermediate
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Language

Finnish
Fluent
English
Fluent
Swedish
Beginner

Work Experience

Full-Stack Developer at Bronex Software Oy
January 1, 2024 - Present
Full-stack development of www.veroni.fi, a tax optimization SaaS web application. Own front-end development, back-end services, testing, QA, and DevOps end-to-end. Design and maintain CI/CD pipelines with automated testing integrated into workflows. Develop internal company tools and integrations including an invoicing system supporting e-invoicing plus PDF and paper billing flows, legacy database and feature integration into the Veroni application, admin tools for customers to track status of their paid/unpaid invoices, and workflows to create and send sales offers to current and potential customers.
Front-End Developer at Bronex Software Oy
January 1, 2019 - December 31, 2023
Front-end development of Veroni, owning UI architecture, implementation, and long-term maintainability. Maintained high UX standards and accessibility/intuition for end users. Implemented end-to-end test automation with Cypress covering critical user flows and enabling automated regression testing. Built and maintained the product website including SEO. Contributed to Veroni calculation engine development (WASM, C++). Provided product support for customers.
Developer at Bronex Software Oy
January 1, 2015 - December 31, 2018
Developed Profit Hunter, a tax optimization software product (discontinued when Veroni was released). Performed code refactoring, handled annual regulatory updates, improved runtime performance, and worked on UI/UX development.

Education

Add your educational history here.

Qualifications

Industry Experience

Software & Internet