Available to hire
I’m Peter Hillerström, a full-stack software developer with over a decade of experience delivering web and platform products for startups and consultancies. I enjoy turning ideas into polished features—from dynamic frontend interfaces with Svelte and Leaflet maps to robust Django backends and REST APIs—while keeping user experience at the heart of the product.
Currently working remotely from Helsinki, I lead cross-functional teams through sprint planning, product design, and sustainable delivery. Outside of core development, I contribute to architecture, cloud deployment (AWS), and e-commerce integrations (Stripe) to ship practical solutions that scale.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
Finnish
Fluent
English
Fluent
Swedish
Intermediate
French
Beginner
Work Experience
Senior Software Developer (Full stack) at Vajrakila Innovations Ltd
January 1, 2019 - PresentRemote development of Treebuddy.earth and Envirate, location-based mobile web apps with custom maps. Built a responsive landing page with Svelte, including a CO2 calculator, YouTube video placeholder, and a Stripe-powered shop. Engaged in sprint planning, product design, issue prioritisation, and backend development with Django and OpenAPI/Swagger REST API using Django Ninja.
Senior software developer (Full stack) at Toughbyte Ltd
December 31, 2017 - September 10, 2025Consultancy project for F-Secure focusing on desktop password manager development using JavaScript and Qt.
Senior Software Developer (Full stack) at Artist Exchange Ltd
December 31, 2017 - September 10, 2025Full-stack development of a musical gig buying/selling service. Implemented high test coverage with Cucumber E2E tests and ported a calendar from jQuery to AngularJS.
Software developer (Backend) at Striim.in Ltd
December 31, 2016 - September 10, 2025Backend development for a movie delivery platform; built a state-machine based transcoding microservice.
Senior Software Developer (Full stack) at eDocker Digital Publishing Oy
December 31, 2015 - September 10, 2025Full-stack development for digital publishing products; co-developed an efficient eBook reader for touch devices. Jira administration and Scrum process involvement.
Software specialist (Full stack) at Symbio
December 31, 2014 - September 10, 2025Consultancy role including Intel-related graphics card test automation data visualisations; prototypes, technology selections, UI/UX designs for automobile consoles.
Software developer (Full stack) at Soprano Digital Oy / Brain Alliance Oy
December 31, 2013 - September 10, 2025Frontend work on a Finnish top-25 website with ~400,000 weekly unique visitors; software architecture design for a HD video delivery platform for desktop and mobile.
Set-top box software developer (Full stack) at Maxisat Oy
December 31, 2012 - September 10, 2025UI and backend development for IPTV systems; Ekioh web browser with SVG-based UIs; implemented pause functionality; gained familiarity with video streaming technologies.
Freelance graphic designer and web developer (Full stack) at Loihde
December 31, 2011 - September 10, 2025Freelance work in graphic design and web development; involved in project delivery and client-facing development.
Python web programmer (Full stack) at Syneus Solutions
December 31, 2010 - September 10, 2025Developed customised web shops; implemented image resizing, thumbnails, and watermarking for a 30,000-image product catalogue; built Django models and custom ORM fields.
Senior Software Developer (Full stack) at Vajrakila Innovations Ltd
January 1, 2019 - PresentLocation-based mobile web applications with custom maps for Treebuddy.earth and Envirate. Led development of dynamic features using Svelte and Leaflet.js; created a responsive landing page with Svelte including a CO2 calculator and video placeholders; built a Stripe-powered web shop; responsible for sprint planning, product design, issue prioritisation, and backend development with Django and Django Ninja REST API (OpenAPI/Swagger).
Senior Software Developer (Full stack) at Toughbyte Ltd
December 31, 2017 - September 10, 2025Consultancy; contributed to a F-Secure engagement to develop a password manager desktop application using JavaScript and Qt.
Senior Software Developer (Full stack) at Artist Exchange Ltd
December 31, 2017 - September 10, 2025Full-stack web development of a musical gig buying and selling service; high test coverage with Cucumber E2E tests; ported an existing calendar implementation from jQuery into AngularJS.
Software developer (Backend) at Striim.in Ltd
December 31, 2016 - September 10, 2025Backend development of the Striim.in movie delivery platform; developing a state machine based transcoding microservice.
Senior Software Developer (Full stack) at eDocker Digital Publishing Oy
December 31, 2015 - September 10, 2025Full-stack software development for digital publishing products and services for publishers; co-developed an efficiently working eBook reader application for touch devices; Jira administration and Scrum process.
Software specialist (Full stack) at Symbio
December 31, 2014 - September 10, 2025Intel: working as a software consultant doing graphic card test automation data visualisations; prototyping, technology selections, and UI/UX designs for automobile consoles.
Software developer (Full stack) at Soprano Digital Oy / Brain Alliance Oy
December 31, 2013 - September 10, 2025Frontend and full-stack work on a Finnish top-25 website with over 400,000 unique visitors weekly; software architecture design of a HD video delivery platform for desktop and mobile.
Set-top box software developer (Full stack) at Maxisat Oy
December 31, 2012 - September 10, 2025UI and backend development for IPTV systems; Ekioh web browser on STB with SVG-based UIs; implemented pause functionality; gained experience with video streaming and packaging new STB software versions.
Freelance graphic designer and web developer (Full stack) at Loihde
December 31, 2011 - September 10, 2025Freelance work in graphic design, web design, and software development.
Python web programmer (Full stack) at Syneus Solutions
December 31, 2010 - September 10, 2025Customized web shops; implemented resizing, thumbnails and watermarking for a product catalogue of 30,000 images; wrote custom Django models and database field classes.
Senior Software Developer (Full stack) at Vajrakila Innovations Ltd
January 1, 2019 - PresentLead development of location-based mobile web apps (Treebuddy.earth, Envirate) with Svelte and Leaflet; built a responsive landing page with a CO2 calculator, YouTube video placeholders, and a Stripe-powered web shop. Involved in sprint planning, product design and issue prioritisation; backend development with Django and a REST API using Django Ninja.
Senior software developer (Full stack) at Toughbyte Ltd
January 1, 2017 - September 10, 2025Consultancy; contributed to a password manager desktop application project for F-Secure using JavaScript and Qt.
Senior Software Developer (Full stack) at Artist Exchange Ltd
January 1, 2017 - September 10, 2025Full-stack web development of a musical gig buying/selling service; high test coverage with Cucumber E2E tests; ported a calendar implementation from jQuery to AngularJS.
Software developer (Backend) at Striim.in Ltd
January 1, 2016 - September 10, 2025Backend development of the Striim.in movie delivery platform; built a state-machine-based transcoding microservice.
Senior Software Developer (Full stack) at eDocker Digital Publishing Oy
January 1, 2015 - September 10, 2025Full-stack development for digital publishing products; co-developed an efficient eBook reader for touch devices; Jira administration and scrum process handling.
Software specialist (Full stack) at Symbio
January 1, 2014 - September 10, 2025Intel graphics card test automation data visualisations; prototyping/UI-UX concepts for automobile consoles.
Software developer (Full stack) at Soprano Digital Oy / Brain Alliance Oy
January 1, 2013 - September 10, 2025Frontend work on a Finnish top-25 website with 400,000 weekly unique visitors; software architecture design of a HD video delivery platform for desktop and mobile users.
Set-top box software developer (Full stack) at Maxisat Oy
January 1, 2012 - September 10, 2025UI and backend development for IPTV systems; Ekioh-based SVG UIs; implemented pause functionality; gained experience with video streaming technologies.
Freelance graphic designer and web developer (Full stack) at Loihde
January 1, 2011 - September 10, 2025Freelance work combining graphic design, web design, and software development for diverse projects in Turku.
Python web programmer (Full stack) at Syneus Solutions
January 1, 2010 - September 10, 2025Developed customised web shops for Strom Motor and Scandinavian Outdoor Store; implemented image resizing, thumbnails and watermarking; created custom Django models and fields.
Senior Software Developer (Full stack) at Vajrakila Innovations Ltd
January 1, 2019 - PresentSenior full-stack developer working on Treebuddy.earth and Envirate. Built location-based mobile web features with Svelte and Leaflet.js, created a responsive landing page with Svelte (including a CO2 calculator, YouTube video placeholder, and a Stripe-powered web shop). Involved in sprint planning, product design, and issue prioritisation; backend development with Django and a Django Ninja REST API. Projects run fully remotely from Helsinki, Finland.
Senior software developer (Full stack) at Toughbyte Ltd
December 31, 2017 - September 10, 2025Consultancy role; contributed to IT security projects, including a password manager desktop application using JavaScript and Qt.
Senior Software Developer (Full stack) at Artist Exchange Ltd
December 31, 2017 - September 10, 2025Full-stack development for a musical gig buying/selling service; implemented high test coverage with Cucumber E2E tests and ported a calendar from jQuery to AngularJS.
Software developer (Backend) at Striim.in Ltd
December 31, 2016 - September 10, 2025Backend development for the Striim.in movie delivery platform; developed a state-machine-based transcoding microservice.
Senior Software Developer (Full stack) at eDocker Digital Publishing Oy
December 31, 2015 - September 10, 2025Full-stack development for digital publishing products and services; co-developed an efficient touch-based eBook reader; Jira administration and scrum process management.
Software specialist (Full stack) at Symbio
December 31, 2014 - September 10, 2025Intel projects; software consultancy including graphic card test automation data visualisations, prototypes, technology selections, and UI/UX design work for automobile consoles.
Software developer (Full stack) at Soprano Digital Oy / Brain Alliance Oy
December 31, 2013 - September 10, 2025Frontend work on a Finnish top-25 website with ~400,000 weekly visitors; software architecture design for a HD video delivery platform for desktop and mobile.
Set-top box software developer (Full stack) at Maxisat Oy
December 31, 2012 - September 10, 2025UI and backend development for IPTV systems; working with Ekioh SVG-based UIs on STB; implemented pause functionality and gained experience with video streaming and related formats; packaged new STB software versions.
Freelance graphic designer and web developer (Full stack) at Loihde
December 31, 2011 - September 10, 2025Freelance work covering graphic design, web design, and software development.
Python web programmer (Full stack) at Syneus Solutions
December 31, 2010 - September 10, 2025Developed customised web shops for clients; implemented image resizing, thumbnails, watermarking for large catalogs; created custom Django models and ORM fields.
Education
Self-directed study at Self-study
January 1, 2005 - September 10, 2025Web development at ICT-asiantuntijoiden koulutusohjelma
January 1, 2011 - September 10, 2025Basic examination on communications, Graphic design at Lahti College of Arts and Crafts
January 1, 1995 - December 31, 1998Upper primary school, arts focused class at Lahden yhteiskoulu
January 1, 1992 - December 31, 1995Self-studying programming at Self-taught
January 1, 2005 - September 10, 2025Web development at IctPro ICT-asiantuntijoiden koulutusohjelma
January 1, 2011 - September 10, 2025Basic examination on communications, Graphic design at Lahti College of Arts and Crafts
January 1, 1995 - December 31, 1998Upper primary school, arts focused class at Lahden yhteiskoulu
January 1, 1992 - December 31, 1995ICT Expert Training Program at ICTPro / ICT-asiantuntijoiden koulutusohjelma
January 1, 2011 - December 31, 2011Basic examination on communications, Graphic design at Lahti College of Arts and Crafts
January 1, 1995 - January 1, 1998Upper primary school, arts-focused class at Lahden yhteiskoulu
January 1, 1992 - January 1, 1995Self-studying programming at Self-taught
January 1, 2005 - September 10, 2025Web development at IctPro ICT-asiantuntijoiden koulutusohjelma
January 1, 2011 - December 31, 2011Basic examination on communications, Graphic design at Lahti College of Arts and Crafts
January 1, 1995 - December 31, 1998Upper primary school, arts focused class at Lahden yhteiskoulu
January 1, 1992 - December 31, 1995Qualifications
Self-taught programming
January 1, 2005 - September 10, 2025Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Education, Computers & Electronics, Other
Spellbook is a web browser extension (WebExtension) for Firefox and Chrome to easily add new bookmarks to correct categories. Made with Svelte and previously Riot.js and Vue.js.
https://www.twine.net/signin
https://www.twine.net/signin
https://www.twine.net/signin
Serpent is an exploration into DNA sequences, codons, amino acids and genome data. Provides various CLI commands and data visualization tools. Helps explore and convert genomic data. The aim was also to develop new data compression algorithms for genome data, and invented two such data compression algorithms.
#datacompression #algorithms #bioinformatics #datavisualisation #clitools
Akasha is for prototyping audio DSP algorithms and exploration into audio programming and DSP algorithms. Original idea was to develop an audio application suite for sound engineers – a bit like Photoshop for audio.
https://www.twine.net/signin
Visual mineral resource index and estimation using curve fitting.
Interactive web application inspired by the Limits to Growth (1972) book.
Technologies: Svelte, SVG, Numpy, Scipy, Flask, Heroku
Simple game for TIC-80 fantasy console. Entry in a Lisp game jam. Written in Fennel Lisp. I am especially happy about the pixel graphics I did for the game.
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