Looking for a job

Maciej Krasniewski

@maciejkrasniewski

Message

Senior backend engineer building Rust event-streaming systems and replay pipelines in independent development.

Germany

Message

What I'm looking for

I'm seeking a senior backend role that's 100% remote in the EU.

In my independent software development and open-source work, I built herbatka, a Rust event-streaming broker for resilient, event-driven workloads. I used Tokio and ownership-safe concurrency for its messaging architecture.

I also developed a WAL-inspired replay pipeline for a multi-agent simulation backend, with a focus on correctness and throughput under concurrent load. My current projects include Rust developer tooling and an early-stage AI agent orchestration core.

At Finexity, I worked on backend APIs and cloud delivery for a regulated fintech platform, and helped move an over-complex GraphQL system toward event-driven services. The role ended amid company-wide restructuring during IPO preparation.

Earlier, I worked on banking, insurance, energy-grid, and MAM/DAM/PIM software across Comdirect, HBT Hamburger Berater Team, msg nexinsure, Comosoft GmbH, and NETDV IT GmbH. I’m seeking a senior backend role that’s 100% remote in the EU.

Experience

Work history, roles, and key accomplishments

Current

Independent Software Development & Open Source

Current

Self Employed

Jul 2024 - Present (2 years 3 months)

Developed Rust backend systems including an event-streaming broker and WAL-inspired replay pipelines. Utilized AI-assisted engineering practices with Claude Code and Cursor.

Rust Go Python Tokio Claude Code Cursor

Software Engineer

Finexity

Jan 2024 - Jun 2024 (5 months)

Developed backend for a regulated FinTech platform using Go, migrating complex GraphQL to event-driven services. Built scalable APIs and serverless architecture on AWS.

Go GraphQL Event Driven Architecture Terraform Serverless CI CD Git

Software Developer

Comdirect (Commerzbank Group)

Oct 2022 - Mar 2023 (5 months)

Worked on banking software in a regulated financial environment, using Java and Oracle/PL/SQL with Jenkins CI/CD.

Java 8 Pl SQL Jenkins Maven

Consultant

HBT Hamburger Berater Team

Feb 2022 - May 2022 (3 months)

Developed energy-grid software handling time-series data for virtual power plants, with event-driven integration using Kafka.

Java 11 Spring Boot Docker Kafka

Senior Consultant

msg nexinsure

Jun 2021 - Dec 2021 (6 months)

Developed insurance-sector backend services using Java and Dropwizard, with OpenAPI and container/Helm delivery. Implemented observability with Grafana.

Java 11 Dropwizard Docker OpenAPI Helm Grafana