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< head > < title > Bastian Gruber - CV< / title >
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class="cmbx-12">Bastian Gruber< / span >   < / td > < / tr > < tr
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class="cmbx-10">Professional < / span >   < / td >
< / tr > < tr
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class="td00">LinkedIn: < a href = "https://linkedin.com/in/bastiangruber" > linkedin.com/in/bastiangruber< / a >   < / td >
< / tr > < tr
style="vertical-align:baseline;" id="TBL-2-3-">< td style = "white-space:normal; text-align:left;" id = "TBL-2-3-1"
class="td00">Book: < a href = "https://rustwebdevelopment.com" > rustwebdevelopment.com< / a >   < / td >
< / tr > < tr
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class="td00">E-Mail: < a href = "mailto:gruberbastian@me.com" > gruberbastian@me.com< / a >   < / td >
< / tr > < tr
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class="td00">Website: < a href = "https://bastiangruber.ca" > bastiangruber.ca< / a >   < / td > < / tr > < / table > < / div > < / td > < td class = "second-address" > <!-- tex4ht:inline --> < div class = "tabular" > < table id = "TBL-3" class = "tabular"
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class="cmbx-10">Code < / span >   < / td >
< / tr > < tr
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class="td00">GitHub: < a href = "https://github.com/gruberb" > github.com/gruberb< / a >   < / td >
< / tr > < tr
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class="td00">Git: < a href = "https://code.novanexus.ca/gruberb" > code.novanexus.ca/gruberb< / a >   < / td > < / tr > < / table > < / div > < / td > < / tr > < / table >
< h4 class = "sectionHead" > < a
id="x1-10000">< / a > < div
class="centerline"> SUMMARY < / div > < / h4 > < div class = "section" >
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<!-- l. 55 --> < p class = "noindent" > 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.
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< / p >
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< / div > < h4 class = "sectionHead" > < a
id="x1-20000">< / a > < div
class="centerline"> SKILLS < / div > < / h4 > < div class = "section" >
<!-- l. 68 --> < p class = "noindent" > < span
class="cmbx-10">Languages: < / span > Rust, C++, Python, TypeScript, Go < br
class="newline" />< span
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class="cmbx-10">Systems & Backend: < / span > async Rust (Axum, Actix), Python/FastAPI, Node.js, FFI/UniFFI, gRPC, REST
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< br
class="newline" />< span
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class="cmbx-10">Architecture: < / span > distributed systems, P2P protocols, system design, cross-platform (Desktop/Android/iOS)
< br
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class="newline" />< span
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class="cmbx-10">Infrastructure & Observability: < / span > AWS, GCP, Docker, Kubernetes, CI/CD, Grafana, performance
profiling
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< / p >
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< / div > < h4 class = "sectionHead" > < a
id="x1-30000">< / a > < div
class="centerline"> PROFESSIONAL EXPERIENCE < / div > < / h4 > < div class = "section" >
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<!-- l. 85 --> < p class = "noindent" > < span
class="cmsl-10">Staff Software Engineer < / span > Feb 2026 - Present
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< br
class="newline" />< span class = "company" > Mozilla< / span > , Remote < br
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class="newline" />Promoted for cross-team technical leadership and delivering multi-platform privacy features. < / p >
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< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 89 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 90 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 91 --> < p class = "noindent" > 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< / p > < / li > < / ul >
<!-- l. 94 --> < p class = "noindent" > < span
class="cmsl-10">Senior Software Engineer < / span > Jun 2024 - Jan 2026
< br
class="newline" />< span class = "company" > Mozilla< / span > , Remote < br
class="newline" />< / p >
< ul class = "itemize1" >
< li class = "itemize" >
<!-- l. 97 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 98 --> < p class = "noindent" > Code reviewer for UniFFI, Mozilla’ s multi-language bindings generator (Rust to Kotlin, Swift, Python,
JavaScript)
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 99 --> < p class = "noindent" > Contributing directly to Firefox Desktop (mozilla-central): shipping Rust and C++ code
< / p > < / li >
< li class = "itemize" >
<!-- l. 100 --> < p class = "noindent" > Led “ Rusty Fridays” sessions (6– 10 engineers per session), building internal Rust knowledge across
teams< / p > < / li > < / ul >
<!-- l. 103 --> < p class = "noindent" > < span
class="cmsl-10">Technical Editor, “ From C to Rust” < / span > Feb 2026 - Present
< br
class="newline" />< span class = "company" > Manning Publications< / span > (Contract, Part-time) < br
class="newline" />Reviewing technical accuracy and pedagogical quality for Manning’ s C-to-Rust migration guide.
< / p > <!-- l. 109 --> < p class = "noindent" > < span
class="cmsl-10">Senior Systems Engineer, Team Lead < / span > Apr 2023 - Jun 2024
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< br
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class="newline" />< span class = "company" > Toposware< / span > (acquired by < span class = "company" > Polygon Labs< / span > ), Remote < br
class="newline" />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.
< / p >
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< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 113 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 114 --> < p class = "noindent" > Built the EVM bridge connecting external Ethereum-compatible chains to the core network
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 115 --> < p class = "noindent" > Led the internal benchmarking initiative that changed where the team focused optimization effort< / p > < / li > < / ul >
<!-- l. 118 --> < p class = "noindent" > < span
class="cmsl-10">Senior Software Engineer < / span > Aug 2022 - Feb 2023
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< br
class="newline" />< span class = "company" > Centrifuge< / span > , Remote < br
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class="newline" />Protocol team building DeFi infrastructure on Substrate/Polkadot in Rust. < / p >
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< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 122 --> < p class = "noindent" > Implemented on-chain fund pool mutations, the core feature enabling live capital allocation adjustments
in the lending protocol
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 123 --> < p class = "noindent" > Replaced manual documentation with CI-driven auto-generation from Rust source, eliminating
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persistent drift between code and public docs< / p > < / li > < / ul >
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<!-- l. 126 --> < p class = "noindent" > < span
class="cmsl-10">Author, “ Rust Web Development” < / span > Oct 2020 - Dec 2022
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< br
class="newline" />< span class = "company" > Manning Publications< / span > < br
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class="newline" />Wrote and published an end-to-end guide covering async Rust, web frameworks, and production deployment.
< / p > <!-- l. 132 --> < p class = "noindent" > < span
class="cmsl-10">Sr. Solutions Architect (promoted from SA) < / span > Jun 2020 - Jul 2022
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< br
class="newline" />< span class = "company" > Twilio Inc.< / span > , Remote < br
class="newline" />< / p >
< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 135 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 136 --> < p class = "noindent" > Created reusable engagement playbooks adopted across the EMEA Professional Services team< / p > < / li > < / ul >
<!-- l. 139 --> < p class = "noindent" > < span
class="cmsl-10">Systems Engineer, Core Backend < / span > Aug 2019 - May 2020
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< br
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class="newline" />< span class = "company" > Kraken Digital Asset Exchange< / span > , Remote < br
class="newline" />Part of the first Rust team rewriting Kraken’ s core infrastructure from PHP. < / p >
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< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 143 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 144 --> < p class = "noindent" > 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< / p > < / li > < / ul >
<!-- l. 149 --> < p class = "noindent" > < span
class="cmsl-10">Earlier Career < / span > 2013 - 2019
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< br
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class="newline" />Sr. Software Engineer (freelance from 2016) across enterprise clients (< span class = "company" > OSRAM< / span > , K<> rber Digital, < span class = "company" > GIATA< / span > , < span class = "company" > Avenga< / span > ) and
startups (Dalia Research, blogfoster, smartB) in Berlin. < / p >
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< ul class = "itemize1" >
< li class = "itemize" >
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<!-- l. 152 --> < p class = "noindent" > 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
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 153 --> < p class = "noindent" > Designed IoT authentication infrastructure at < span class = "company" > OSRAM< / span > for thousands of connected devices (Node.js,
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Go, Lua)
< / p > < / li >
< li class = "itemize" >
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<!-- l. 154 --> < p class = "noindent" > First engineering hire at K<> rber Digital: built real-time sensor data pipelines on AWS (Lambda, ECS,
Route53)
< / p > < / li >
< li class = "itemize" >
<!-- l. 155 --> < p class = "noindent" > Decomposed < span class = "company" > GIATA< / span > ’ s monolithic PHP system into 6 Docker-based services, taught the existing team
Scrum and JavaScript
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< / p > < / li >
< li class = "itemize" >
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<!-- l. 156 --> < p class = "noindent" > Contributed to the Rust compiler and standard library during a self-directed sabbatical (2019)< / p > < / li > < / ul >
<!-- l. 159 --> < p class = "noindent" > < span
class="cmsl-10">Technical Writer < / span > 2008 - 2020
< br
class="newline" />Freelance (Contract) < br
class="newline" />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).
< / p >
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< / div > < h4 class = "sectionHead" > < a
id="x1-40000">< / a > < div
class="centerline"> EDUCATION < / div > < / h4 > < div class = "section" >
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<!-- l. 171 --> < p class = "noindent" > < span
class="cmsl-10">Bachelor of Science, Computer Science < / span > Mar 2014
< br
class="newline" />< span class = "company" > TH Ingolstadt< / span > . Scholarship from Allianz Deutschland AG (fully funded dual-study program, 2010– 2014)
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