Mariusz Rakus

Senior Full-Stack Engineer

Gdańsk, Poland

mariusz@raqz.pl +48 519 375 240 raqz.pl github.com/kolezka

Summary

Senior Full-Stack Engineer with 7+ years of experience delivering end-to-end products.
TypeScript/JavaScript, React/Next.js, React Native, Node.js, production deployments.

Skills

Expert

Intermediate

Basic (Actively Developing)

Core Software Engineering

Languages

TypeScriptJavaScriptSQLBashPython

Frontend

ReactNext.jsA11yOptimizationAngularVueAstro

Backend

Node.jsExpressOAuth 2.0 / OIDCJWTNestJSFastifytRPCApollo GraphQLBackground JobsOpenAPIMessage Queues (concepts)RabbitMQ

Mobile

React NativeExpoEASXcodeApp Store & Google Play DeploymentApp Signing & ProvisioningPush Notifications (FCM/APNs)Deep LinkingOTA UpdatesAndroid Studio

Architecture

HexagonalMonolith/Modular MonolithMicroservicesDDDTDDDesign PatternsEDA (concepts)

Databases (OLTP)

PostgreSQLMySQLRedisPrismaSQLiteTursoTypeORMSequelize

Infrastructure

CI/CD PipelinesDockerFirebaseObservability (Sentry, Datadog)AWS (RDS, S3, Lambda, SQS, SNS, Cognito)Terraform (concepts)

AI & Data Engineering - Learning roadmap

Core

AWS Bedrock (concepts)RAG (concepts)Agentic Workflows

Tools & Frameworks

OpenAI APIOllamaFlowiseAnythingLLMHuginnn8nLangChain

Selected Projects

Henry Schein — DirectDental Mobile Application

Software Engineer

Sep 2023 – Nov 2025

Built iOS/Android app from scratch, integrating with existing Ruby on Rails API. Full mobile lifecycle: architecture, implementation, CI/CD, releases, improvements. Minor Rails-side changes. The app became a key product asset and supported the company's acquisition by a major US corporation (dental industry).

Tech stack:

TypeScriptReact NativeExpoEASPostgreSQLRuby on RailsCI/CDSentryDatadogJestMaestro

Dynamic.xyz — Web3 Authentication Platform

Full-Stack Developer

Nov 2022 – Sep 2023

Worked on Web3 auth and wallet infrastructure platform. Built developer tools simplifying login flows across multiple chains. Focus on DX and wallet provider integrations.

Tech stack:

TypeScriptReactNode.jsExpressPrismaPostgreSQLChain IntegrationsWallet SDKs (WalletConnect, Wagmi)SentryDatadogJest

Globality.com — AI-Powered Sourcing Platform

Frontend Engineer

Oct 2021 – Nov 2022

Built AI-powered UI for an autonomous sourcing platform.

Tech stack:

TypeScriptReactApollo GraphQLUnit TestingE2E TestingJest

Experience

Software Engineer

Sofomo — Wrocław, Poland

Sep 2021 – Feb 2026

Collaborated with US clients: designing, building, and delivering full-stack products from concept to production. Ownership of features and end-to-end delivery + production support.

Frontend Developer

iRonin.IT — Remote

Sep 2021 – Sep 2023

Development of existing applications, team collaboration, predictable delivery and quality.

TypeScriptReactRuby on RailsCI/CD

Fullstack Developer

ITCraftship — Remote

Jul 2020 – Sep 2021

Maintenance and development of Angular apps, building web/mobile from scratch in Ionic/Angular, React, Next.js and Flutter.

TypeScriptAngularIonicReactVueNext.jsCI/CD

Frontend Developer

SoftwareHut — Rzeszów, Poland

Mar 2019 – Jul 2020

Vue and React for enterprise; including Vue solution for ORLEN Laboratorium and React gamification platform for GrowUperion.

TypeScriptReactVueUnit Testing

Frontend Developer

Artneo sp. z o. o. — Olsztyn, Poland

Mar 2018 – Jan 2019

Landing pages, e-commerce, frontend fundamentals and working with client requirements.

Education

Uniwersytet WSB Merito Gdańsk

Computer Science - Industrial Computer Science and Industrial IoT

2026

University of Warmia and Mazury in Olsztyn

Computer Science

2017 – 2018

Interests

CryptocurrenciesArtificial IntelligenceElectronicsFPV Racing & Freestyle Drones

Languages

English

C1 (Advanced)

Polish

Native

References

Frank Sandoval

Development Manager at Henry Schein

References available on request

Maciej Adamczyk

nursa.com

References available on request