Staff Engineer at Mozilla, shipping Rust, C++, and Python to hundreds of millions of Firefox users across Desktop, Android, and iOS. Promoted for leading cross-team projects and getting complex, multi-platform features shipped. 12+ years of backend and systems work, published author (“Rust Web Development”), and 13 years of technical writing for outlets like c’t and iX.

Languages: Rust, C++, Python, TypeScript, Go
Systems & Backend: async Rust (Axum, Actix), Python/FastAPI, Node.js, FFI/UniFFI, gRPC, REST
Architecture: distributed systems, P2P protocols, system design, cross-platform (Desktop/Android/iOS)
Infrastructure & Observability: AWS, GCP, Docker, Kubernetes, CI/CD, Grafana, performance profiling

Staff Software Engineer Feb 2026 - Present
Mozilla, Remote
Promoted for cross-team technical leadership and delivering multi-platform privacy features.

• Leading the Image Service project: replaced 3 fragile, duplicated favicon systems with a single GCS-backed API serving 4+ internal teams. Extended an existing Python/Airflow pipeline instead of building a new service, reducing maintenance burden across the board

• Implemented Oblivious HTTP (OHTTP) in application-services (shared Rust component cross-compiled to Swift/Kotlin via UniFFI) and wrote the C++ integration for Firefox Desktop. Now live on Firefox iOS, Android, and Desktop, covering millions of users

• Maintaining the Firefox Push notification service (Rust backend, 50k req/s, sub-200ms latency). Reduced memory footprint, added circuit breakers, built Grafana dashboards for observability

Senior Software Engineer Jun 2024 - Jan 2026
Mozilla, Remote

• Core maintainer of Merino, the Python/FastAPI service powering Firefox Suggest. All search suggestions in Firefox route through Merino, which enriches and serves them in a privacy-preserving way

• Code reviewer for UniFFI, Mozilla’s multi-language bindings generator (Rust to Kotlin, Swift, Python, JavaScript)

• Contributing directly to Firefox Desktop (mozilla-central): shipping Rust and C++ code

• Led “Rusty Fridays” sessions (6–10 engineers per session), building internal Rust knowledge across teams

Technical Editor, “From C to Rust” Feb 2026 - Present
Manning Publications (Contract, Part-time)
Reviewing technical accuracy and pedagogical quality for Manning’s C-to-Rust migration guide.

Senior Systems Engineer, Team Lead Apr 2023 - Jun 2024
Toposware (acquired by Polygon Labs), Remote
Core team of 4 building a peer-to-peer distributed network protocol from scratch in Rust. Our core implementation of the double echo protocol and the Ethereum bridge became part of the Polygon stack after acquisition.

• Achieved 10x message throughput per node by profiling the actual bottleneck: optimized batch processing and serialization paths after discovering nodes were compute-bound on crypto operations, not network-limited

• Built the EVM bridge connecting external Ethereum-compatible chains to the core network

• Led the internal benchmarking initiative that changed where the team focused optimization effort

Senior Software Engineer Aug 2022 - Feb 2023
Centrifuge, Remote
Protocol team building DeFi infrastructure on Substrate/Polkadot in Rust.

• Implemented on-chain fund pool mutations, the core feature enabling live capital allocation adjustments in the lending protocol

• Replaced manual documentation with CI-driven auto-generation from Rust source, eliminating persistent drift between code and public docs

Author, “Rust Web Development” Oct 2020 - Dec 2022
Manning Publications
Wrote and published an end-to-end guide covering async Rust, web frameworks, and production deployment.

Sr. Solutions Architect (promoted from SA) Jun 2020 - Jul 2022
Twilio Inc., Remote

• Technical lead for Fortune 500 professional services engagements: diagnosed latency issues, redesigned messaging architectures, delivered implementation roadmaps sized to each client’s team and resources

• Created reusable engagement playbooks adopted across the EMEA Professional Services team

Systems Engineer, Core Backend Aug 2019 - May 2020
Kraken Digital Asset Exchange, Remote
Part of the first Rust team rewriting Kraken’s core infrastructure from PHP.

• Rewrote core banking services and API gateway in Rust, replacing legacy PHP services. The new stack handled significantly higher throughput with a smaller hardware footprint

• Shipped the first version of the automated KYC verification flow, replacing manual processing right as COVID drove a massive spike in new customer sign-ups

Earlier Career 2013 - 2019
Sr. Software Engineer (freelance from 2016) across enterprise clients (OSRAM, K�rber Digital, GIATA, Avenga) and startups (Dalia Research, blogfoster, smartB) in Berlin.

• Founded “Rust & Tell Berlin” meetup, grew it into the largest Rust meetup globally. Coordinated with companies for venue sponsorship, organized speakers, photographers, and videographers. Gave talks and created a welcoming space for the Rust community

• Designed IoT authentication infrastructure at OSRAM for thousands of connected devices (Node.js, Go, Lua)

• First engineering hire at K�rber Digital: built real-time sensor data pipelines on AWS (Lambda, ECS, Route53)

• Decomposed GIATA’s monolithic PHP system into 6 Docker-based services, taught the existing team Scrum and JavaScript

• Contributed to the Rust compiler and standard library during a self-directed sabbatical (2019)

Technical Writer 2008 - 2020
Freelance (Contract)
13 years writing for technical publications including c’t, iX, Macwelt (IDG/Heise), and tech blogs (LogRocket, stadt-bremerhaven.de, mobilegeeks.de). Also authored “OS X f�r Einsteiger” (Bookboon, 2012).

Bachelor of Science, Computer Science Mar 2014
TH Ingolstadt. Scholarship from Allianz Deutschland AG (fully funded dual-study program, 2010–2014)