Junior Fullstack Developer
B2B Integration Specialist at Verkkokauppa.com
I run production B2B integrations by day and build fullstack applications around them. Comfortable in XML and EDI message flows, Node.js and React, and Linux servers. I write software with AI assistance in short agile iterations, and a decade around commerce systems means an unfamiliar platform is rarely a problem.
I build and run B2B integrations for a living and I am moving that work into software development. At Verkkokauppa.com I lead procurement integration projects: cXML and OCI punchout, EDI order and invoice flows, Peppol and UBL messaging, and the supplier portals that sit around them. The job is equal parts XML mapping, API debugging and talking to the people on the other end of the connection.
Alongside that I am completing a Bachelor of Engineering in Information Technology with a Software Development specialisation at Oulu University of Applied Sciences. Coursework covers Node.js and React on the web side, Kotlin and React Native on mobile, and C++ for object-oriented and embedded work.
I write software with AI assistance and work in an agile way: small increments, early feedback, and working software ahead of documentation. LLM tooling is part of my normal loop for writing, refactoring and reviewing code, and I read and test what comes out of it rather than taking it on trust. AI also shows up on the delivery side of my job: SSH Communications Security's chat assistant for ordering work equipment runs against an API I specified and consulted on.
Ten years in commerce and procurement have made me comfortable across a wide range of systems, from Coupa and SAP Ariba to Linux servers, Cloudflare and Home Assistant. The more useful skill has been getting up to speed on an unfamiliar one quickly. I am looking for a junior fullstack role where that breadth, integration experience and a habit of automating the tedious parts are useful from day one.
5 areas where I already have hands-on experience rather than coursework alone.
This is my day job. I design, run and troubleshoot the B2B message flows between customer procurement systems and Verkkokauppa.com.
Node.js and TypeScript on the server, React and React Native on the client, SQL underneath.
I build with AI assistance, in short iterations: a thin slice first, put it in front of someone, then adjust. LLMs are part of my toolchain, not a demo.
A decade in commerce and procurement has put me in front of a lot of systems. The more useful habit has been picking up the next one quickly.
I run my own infrastructure. This site is deployed, monitored and updated by me.
Production integration work, personal infrastructure and university projects. Source is on GitHub where the project is public.
Customer case published by Verkkokauppa.com. SSH built an AI assistant on their Salax messaging platform that lets employees order work equipment through chat: the assistant checks entitlement against HR data and pulls product, pricing and availability from the Verkkokauppa.com API. I was in a key role on the delivery, producing the interface specifications the customer integrated against and consulting their team through the build. The project went live in a few weeks.
Ongoing production work. I run the integration projects that connect business customers' procurement systems to Verkkokauppa.com: punchout catalogue sessions, EDI order and invoice traffic, and the supplier portals around them. Scope covers requirement gathering with the customer, XML mapping, test cycles, go-live and the monitoring and troubleshooting that follows.
A SaaS EDI operator I am building: it receives business documents, converts them between formats and delivers them in whatever format each trading partner expects. The idea comes straight from the day job, where most integration effort goes into reconciling the same document expressed five different ways. Built as a React and Vite single-page application on a hardened, Cloudflare-fronted deployment.
This site. A server-rendered Node.js and Express application that pulls live data from the GitHub API, caches it, and renders it through EJS. I wrote it, I host it and I maintain the machine it runs on. Development is AI-assisted end to end, from feature drafts to refactoring.
A shell tool for keeping many GitHub repositories in sync at once. Repositories, branches and target directories are declared in a repos.json file, so adding a new repository to the rotation is a config change rather than a code change.
Firmware for ESP32 boards that report sensor readings into a self-hosted Home Assistant instance. Part of a wider home automation setup that also includes an ESPHome component for an IVT Rego1000 heat pump controller.
A small Electron desktop application that reads a Home Assistant entity over its REST API and keeps the current temperature visible on the desktop. Built to stay out of the way: no window chrome, minimal footprint.
Group software development project at Oulu University of Applied Sciences. A C++ ATM client backed by a server-side account API, covering card authentication, balance queries, withdrawals and transaction history. My work spanned the client logic and the API calls behind it.
A React Native application that fetches live flight schedule data from a public API and presents arrivals and departures with search and filtering. Written in TypeScript on Expo.
A web application combining the OpenWeatherMap API with Firebase for authentication and persistence, so a signed-in user's saved locations follow them between sessions and devices.
Embedded team project rebuilding the Finnish television game Speden Spelit on an Arduino Uno. A hardware reaction game with LED sequences, button input, a scrolling display and a persistent high score table.
An adaptation of the Questie quest-tracking addon for Ascension private servers, where the quest database and client differ from retail. Involves reading a large existing Lua codebase and reworking its data layer against a different backend.
Pulled live from the GitHub API. Coursework, experiments and tools, newest activity first.
Over a decade in the same industry, moving from the shop floor to running the systems behind it.
Responsible for leading procurement system integration projects for business clients at Verkkokauppa.com. Tasks include managing, monitoring, troubleshooting, and further developing integrations. Additionally, serve as an administrator for various supplier portals such as Coupa Supplier Portal and SAP Ariba Business Network, ensuring smooth connectivity and data exchange between systems.
Wholesale operations for Baltic and export markets.
B2B corporate sales, order processing, quotation preparation, and new customer acquisition.
Tax-Free and Export services, preparing export documents and international shipping.
Customer service and support operations.
Management of Data & Gaming department.
Sales operations and customer relations.
Retail sales and customer service.
If you are hiring for a junior fullstack or integration-focused developer position in the Helsinki area or remotely, I would be glad to talk. Email is the fastest way to reach me.