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Christoffer Niska

Christoffer Niska

Tech Wizard

Hello there 馃憢馃徎

I am a technology professional with 15+ years of experience in software development. I focus on building software that is robust, understandable, and maintainable while keeping delivery pragmatic and product-driven.

I use AI-assisted development workflows as a natural part of day-to-day engineering, from implementation and refactoring to review and refinement. My background spans hands-on coding, architecture, and technical leadership across multiple product domains.

I prefer strongly typed languages and write most of my day-to-day code in TypeScript, Kotlin, and Rust. Over the years, I have also worked with a wide range of languages and paradigms, including Go, Haskell, and ReasonML.

Outside work, I enjoy sports, good coffee, and time with family.

Best way to reach me is LinkedIn.

Selected Experience

Building teams, platforms, and products that last

  • Dec 2024 - Present 路 1 yr 3 mos

    Senior Software Architect

    Codemate

    Working in hybrid client engagements with high expectations for delivery speed and system quality. Contributing to architecture and development across teams, shaping scalable TypeScript/Node.js systems while balancing short-term delivery with long-term maintainability. Helping establish robust engineering direction and execution across multiple client domains.

    • Software Architecture
    • TypeScript
    • React
    • Node.js
    • DDD
    • AI-assisted Development
    • Software Development
    • Consulting

  • Mar 2023 - Dec 2024 路 1 yr 10 mos

    Technical Lead

    Voyantic

    Joined a product organization scaling both team capability and delivery scope. Led the full-stack team, participated in hiring, and standardized practices and workflows without slowing execution. Improved delivery efficiency and overall team productivity.

    • Leadership
    • Node.js
    • TypeScript
    • React
    • MQTT
    • Software Development
    • Code Review
    • AWS

  • Jun 2021 - Feb 2023 路 1 yr 9 mos

    Solutions Architect

    Tesseract Investment

    Supported international expansion of partner-facing lending services. Redesigned and developed core product capabilities with a focus on scalability and maintainability under growing operational demand. Enabled reliable delivery of lending services to partners worldwide.

    • TypeScript
    • Node.js
    • REST
    • RabbitMQ
    • Postgres
    • Domain-Driven Design
    • Test-Driven Development
    • Kubernetes

  • Apr 2021 - Mar 2022 路 1 yr

    Android Developer

    Sprint AI

    Built and shipped the Android experience for a mobile product used by professional athletes. Delivered a high-quality app using Kotlin and Jetpack Compose with modern architecture patterns. Published a production Android app with a maintainable codebase.

    • Kotlin
    • Android
    • Jetpack Compose
    • REST
    • Retrofit
    • Moshi
    • OAuth2
    • Material UI

  • Dec 2020 - May 2021 路 6 mos

    Technical Lead

    Sightful

    Took a prototype-stage product that needed to become production-ready quickly. As Technical Lead, redesigned product and architecture for maintainability and cost-efficiency under tight timelines. Launched a production service that supported business decision-making.

    • TypeScript
    • Node.js
    • React
    • Next.js
    • GraphQL
    • Apollo
    • Auth0
    • Dgraph

  • Sep 2019 - Nov 2020 路 1 yr 3 mos

    Technology Evangelist

    Compile

    Responded to growing demand for consultant upskilling across active client work. Identified capability gaps and drove technical development while teams continued delivering ongoing services. Improved consultant skills through targeted coaching and practical learning material.

    • TypeScript
    • Node.js
    • React
    • Serverless
    • AWS
    • DynamoDB
    • Git

  • May 2017 - Aug 2019 路 2 yrs 4 mos

    Head of Technology

    Digia

    Led delivery in a large publishing transformation replacing a broad legacy footprint. Coordinated architecture and delivery across many stakeholders and constraints. Enabled retirement of roughly fifteen legacy systems with aligned organizational buy-in.

    • Flow
    • Node.js
    • React
    • GraphQL
    • Apollo
    • Laravel
    • Domain-Driven Design
    • Test-Driven Development

  • Jun 2012 - Apr 2017 路 4 yrs 11 mos

    Chief Technology Officer

    Nord Software

    Led technology strategy and engineering practices in a fast-growing consultancy scaling both people and project volume. Scaled processes, standards, and tooling without losing delivery quality. Grew the team from 10 to 50 developers over five years, sustained successful client deliveries, and as a minority owner supported the company through a successful sale.

    • JavaScript
    • Node.js
    • React
    • React Native
    • Serverless
    • REST
    • Domain-Driven Design
    • Test-Driven Development

Highlighted Projects

Recent product and platform work

  • Dec 2024 - Present 路 1 yr 3 mos

    Game Hub Mobile App

    NDA 路 Gaming

    Contributing to a branded puzzle hub mobile web app delivered with second-party game partners for a Finnish gaming company backed by a global streaming platform. Focusing on core UI platform systems, including theming, IP-specific theme overrides, and navigation architecture, with emphasis on robust cross-surface behavior. The app launched in Nov 2025 and reached over 1.5 million downloads in the first two weeks.

    • TypeScript
    • React
    • Node.js
    • C#
    • Vite
    • Software Architecture
    • DDD
    • Claude Code

  • Mar 2023 - Dec 2024 路 1 yr 10 mos

    Tagsurance 3

    Voyantic 路 RFID

    Led software delivery for an RFID tag testing platform used on production lines with tight integration across hardware and software. Focused on the Tagsurance 3 server platform and related web UIs, coordinating Kubernetes-hosted Node.js services with React + Vite tools for automated test-recipe configuration. Delivered a stable platform that improved operational reliability for production-line testing.

    • Leadership
    • Software Architecture
    • TypeScript
    • Node.js
    • React
    • Vite
    • Kubernetes
    • RFID

  • Jun 2021 - Feb 2023 路 1 yr 9 mos

    Tesseract Platform

    Tesseract Group 路 Finance

    Built core parts of a lending platform expansion requiring global partner support and high scalability. Worked on the partner-facing Earn API, background jobs, and operator tooling while scaling reliably and standardizing code quality across a growing monorepo. Enabled worldwide partner lending operations with stronger quality gates through shared style, tests, and CI/CD enforcement.

    • TypeScript
    • Node.js
    • REST
    • RabbitMQ
    • Postgres
    • Domain-Driven Design
    • Test-Driven Development
    • Kubernetes

  • Apr 2021 - Mar 2022 路 1 yr

    Sprint AI Android App

    Sprint AI 路 Sport

    Built the Android app end-to-end for a mobile product aimed at professional athletes. Implemented robust state management, local persistence, and validation using modern Android patterns. Delivered a production app with a maintainable technical foundation.

    • Kotlin
    • Android
    • Jetpack Compose
    • REST
    • Retrofit
    • Moshi
    • OAuth2
    • Material UI

  • Dec 2020 - May 2021 路 6 mos

    Sightful Web App

    Sightful 路 Business Strategy

    Took ownership of a prototype-stage product as the sole developer with a need to reach production quickly. Redesigned both application and infrastructure for production readiness without overbuilding. Launched a production service with improved maintainability and delivery speed.

    • TypeScript
    • Node.js
    • React
    • Next.js
    • GraphQL
    • Apollo
    • Auth0
    • Dgraph

  • Sep 2019 - Nov 2020 路 1 yr 3 mos

    Back Office Web App

    Compile 路 Software Consulting

    Led development of an internal competence management tool to support consultant development paths. Kept the solution simple while still supporting evolving organizational needs. Delivered a practical internal product that improved visibility and planning for capability development.

    • TypeScript
    • Node.js
    • React
    • Serverless
    • AWS
    • DynamoDB
    • Material UI
    • Git

  • Jan 2019 - Aug 2019 路 8 mos

    Back Office Web App

    NDA 路 Retail

    Joined a delayed retail back-office project late to stabilize delivery close to launch risk. Redesigned and refactored key architecture parts under time pressure without introducing new risk. Recovered the project path to launch with a production-ready solution.

    • TypeScript
    • Node.js
    • React
    • GraphQL
    • Apollo
    • Material UI
    • Git

  • Feb 2017 - Dec 2018 路 1 yr 11 mos

    Publishing Platform

    A-Lehdet 路 Publishing

    Led platform development in a publishing modernization initiative replacing multiple legacy systems. Delivered a cohesive system while aligning business and technical expectations across teams and stakeholders. Enabled retirement of a large legacy footprint and established a sustainable digital publishing platform.

    • Node.js
    • React
    • GraphQL
    • Apollo
    • Laravel
    • Domain-Driven Design
    • Test-Driven Development
    • Contentful

  • Oct 2016 - Jan 2017 路 4 mos

    Bolt.Works Mobile App

    Bolt.Works 路 Construction

    Led initial delivery of an early-stage product for hiring construction workers across mobile app and backend. Defined a practical architecture quickly using a serverless approach. Delivered the first production-capable version and validated the product direction.

    • Flow
    • JavaScript
    • Node.js
    • React Native
    • React
    • Serverless
    • Domain-Driven Design
    • Test-Driven Development

Education

Foundation

  • Sep 2004 - Present

    Bachelor in Engineering

    Arcada University of Applied Sciences

    Main focus on programming, with hands-on work across multiple languages. Studies were paused intermittently due to full-time work.