Tomasz Jaśkiewicz

About

Staff Backend Engineer with 11+ years of experience specializing in Ruby/Rails and cloud technologies (AWS, GCP). Proven track record designing and implementing scalable solutions across fintech (cards, payments), e-mobility, and event platforms. Technically proficient with a passion for DevOps, AI, and self-hosting applications. Strong advocate for team collaboration and fostering professional relationships, with a keen interest in psychology, coaching, and self-development. Passionate about work that has a genuine positive impact on people. Seeking roles that leverage my Ruby expertise while offering opportunities to learn and work with Golang, TypeScript, and Python.

Skills

Backend Development

Ruby / Rails / Grape / Sidekiq REST APIs / GraphQL PostgreSQL / MySQL / DynamoDB Redis / RabbitMQ

AI & Automation

LLM APIs (Claude, OpenAI) Prompt Engineering AI-assisted Development (Claude Code, Copilot)

DevOps & Cloud

AWS (ECS, Lambda, S3, RDS, SQS) Docker / Kubernetes Terraform / Infrastructure as Code CI/CD Pipelines

Leadership

Technical Leadership System Design Code Review Mentoring Coaching

Experience

Housecall Pro

Home services software platform serving thousands of businesses.

Built Commissions feature across 4 domains, requiring cross-team collaboration and deep technical research
Developed internal and external APIs for cross-domain communication and payment provider integrations
Implemented Datadog monitoring for system observability

Distribusion Technologies

Global ground transportation booking platform.

Contributed to the world's largest B2B ground transportation booking API serving 70+ countries
Backend API development in service-oriented architecture for rail, bus, and airport transfers
Integrated with major partners including Google, Booking.com, and national rail carriers

ABB E-mobility

Cloud-based applications for EV charging infrastructure (PANION).

Designed vehicle tracking logic for charging sessions, State of Charge, and GPS locations
Processed extensive telematics events for vehicle movements and location data
Built scalable fleet management platform using AWS (Fargate, S3, RDS, CDK)

Hopin

Online event platform (StreamYard, Streamable, Superwave).

Designed and developed Hopin Registration for seamless website integration
Created efficient processes for orders, payments, and refunds with fee sharing feature
Developed Custom Forms feature for event organizers and participants

solarisBank AG

Banking-as-a-Service platform, Cards team.

Built card issuance and transaction processing with 3rd party provider integrations
Developed Smart Agent for digital fraud alerts and 3D Secure for online transactions
Implemented card tokenization for Apple, Google, and Samsung Pay
Ensured PCI DSS compliance for Cardholder Data
Migrated to AWS (Fargate, S3, Lambda, RDS, DynamoDB) with Terraform

Netguru

Software consultancy - multiple client projects.

Led development teams on recruitment and career platforms
Built LinkedIn-like platform with Segment.io, Searchkick, and Elasticsearch
Developed African Market Talent Platform with secure messaging system
Mentored junior developers and conducted Rails workshops

Education

Postgraduate studies in Coaching with Psychology Elements

SWPS University

2024 — 2026

Engineer's degree in Computer Science

AGH University of Science and Technology

2010 — 2014

Postgraduate studies in Managerial Studies

Tischner European University

2014 — 2015

Certificates

AWS Certified Cloud Practitioner

Amazon Web Services

Mar 2020

Docker Fundamentals

A Cloud Guru

Oct 2019

The Modern JavaScript Bootcamp

Udemy

Volunteer

Men's Circle Facilitator

Fundacja Masculinum

Facilitating personal growth circles for men in Cracow.

9 mo · Jun 2025 — Present

Languages

Polish — Native

English — Professional working

Italian — Elementary