samuli.info
IT freelancer · Tampere, Finland

Design, build,
automate, operate.

I'm Samuli Vainio — a full-stack & cloud developer from Finland. I design, build and ship web apps, cloud architectures and automation to production, with over 20 years of experience.

ReactTypeScriptJavaScriptJavaAWSCI/CDAstroNode.jsSpring BootGraphQLAWS LambdaDynamoDBPostgreSQLSSTDockerCloudflareJenkinsAnsibleOpenAIClaude
00

Who

I build systems that hold up in production — architecture and code, all the way to CI/CD pipelines and deployment, leveraging AI along the way.

I'm a software engineer with over 20 years of hands-on experience building and operating web-based digital services and responsive web apps across many industries. Since 2019 I've worked on a large public-sector digital service — a nationwide, citizen-facing e-service in Finland — first as a full-stack developer and now as DevOps Lead.

In my own product projects, I build cloud-native serverless apps on AWS and explore modern cloud architectures and AI-assisted development workflows. Lately I've been experimenting with AI-driven automation and data analysis — Telegram bots that analyze financial-market and sports data to spot opportunities with TensorFlow machine-learning models.

Across all commercial engagements, I use either Anthropic or OpenAI models to support planning, implementation, testing, and review. I agree the handling of client materials in advance, verify the outputs myself, and remain accountable for the result.

I deliver commercial engagements through my company Poggers Oy. Up-to-date services, boundaries, and prices are available at poggers.fi.

20+
Years of experience
2019
Freelance entrepreneur
6
Projects featured
Full-stack
→ DevOps & cloud
01

Projects

// 01Client work

Full-stackista DevOps-johtamiseen

From full-stack to DevOps Lead — a public-sector digital service (since 2019)

A large citizen-facing public-sector e-service used every day. On the project since 2019 — first as a full-stack developer, and DevOps Lead since 2022: CI/CD pipelines, release processes, production support, security, and infrastructure as code (Jenkins, Docker/Podman, Ansible).

JavaSpring BootReactTypeScriptPostgreSQLJenkinsAnsibleDockerPodman
// 02Own product

Kierto Commerce

Multi-tenant SaaS rental marketplace

A serverless platform where multiple customers each run their own rental marketplace. Designed and built end to end on AWS, multi-party payments included.

ReactAWS LambdaDynamoDBGraphQLStripeSSTCognito
// 03Own product

Vainuri

AI-assisted marketplace listing generator

The user gives a product name and a few photos — an AI assistant writes a publish-ready listing, a price estimate and image feedback. Trilingual, serverless on AWS.

ReactAWS LambdaDynamoDBSSTClaudeStripe
// 04Own product

Pörssiprintteri

Algorithmic trading bot

A dockerized Python bot for stocks and commodities: confluence-based signals, ATR risk management, optional ML forecasts and news-driven boosts. Posts to Telegram.

PythonPostgreSQLDockerTensorFlowLightGBMOpenAI
// 05Own product

Betsiprintteri

ML-based value-tip bot

A container-based Python service that scans odds across 12 sports, scores value picks with machine learning and delivers tips over Telegram — subscriber channel, scheduled jobs and payments.

PythonPostgreSQLDockerMachine LearningTelegram
// 06Own product

Tori-sniper

Tori.fi monitoring + AI valuation

Watches saved-search listings on Tori.fi, values each item with OpenAI and sends concise Telegram alerts about underpriced finds. Built for resellers.

PythonPlaywrightOpenAITelegramDocker
02

Skills

Core stack

ReactTypeScriptJavaScriptJavaAWSCI/CD

Frontend

AstroHTML / CSSVite

Backend

Node.jsSpring BootGraphQLRESTOAuth2 / OIDC

Cloud & DevOps

SSTDockerPodmanCloudflareJenkinsAnsibleGitHub Actions

Data

PostgreSQLDynamoDBSQLSQLAlchemypandas

AI & ML

OpenAIClaudeTensorFlowLightGBMscikit-learn
03 / Contact

Get in touch, andlet's talk.

Email or phone works best — drop me a message and I'll get back to you soon.

Bounded commercial services are available through Poggers Oy: