Hello I'm

Tomi Tuomainen

Software Architect
Integration Architecture & Applied AI

Architecture, hands-on development and practical AI.
Tomi Tuomainen




What I do

I combine software and integration architecture with hands-on development, drawing on 25+ years of experience in public-sector, pension insurance and enterprise systems.
My work spans system design and modernisation, implementation and delivery automation. I apply AI across architecture, code, infrastructure, testing and documentation.
I also support technical delivery, coach and mentor teams, and help organisations adopt practical AI. My approach builds on Agile, DevOps and Clean Code.
  • Development
  • Architecture
  • Integrations
  • Applied AI

Code

Hands-on backend and full-stack development, code reviews and delivery automation. Practical AI agents and workflows support implementation, testing and documentation.

System Architecture

Software and integration architecture for long-lived systems: system structure, APIs, data modelling and modernisation. From architectural decisions to working implementation.

Team

Technical delivery leadership, training and mentoring for development teams. I guide practical AI adoption and offer training and talks on software architecture and applied AI.

Download CV

Experience

Software and integration architecture, hands-on delivery, applied AI and technical leadership.

Approximate years of experience by area

Architecture and integrations

20+ years
  • Enterprise systems, modular monoliths and microservices
  • APIs, domain and database modelling
  • System modernisation

Hands-on delivery

20+ years
  • Backend and full-stack development
  • Code reviews and performance analysis
  • CI/CD, infrastructure automation and DevOps

Applied AI

4+ years
  • AI agents, workflows and harness engineering
  • Reusable team skills, agents and MCP servers
  • AI-assisted architecture, code, infrastructure, testing and documentation

Technical leadership

10+ years
  • Delivery planning and team coordination
  • Stakeholder coordination, risk and issue management
  • Scrum support, training, coaching and mentoring





Client Reviews

Finnish Food Authority

Recognized expert on coding and integrations.

Topi Laamanen

Director of Application Development,
Finnish Food Authority
Siili Solutions

True hands-on architect, ready to help with any software project challenge.

Olli Sorvari

Business Unit Director,
Siili Solutions
LeadDesk

Experienced system architect with focus on working solutions.

Jarno Tenni

VP of Engineering,
LeadDesk