Paul Tötterman
Chief Technology Officer, Co-founder at Carecode
Helsinki, Finland
Summary
🤩
Rockstar🎓
Top SchoolPaul Tötterman is a Helsinki-based CTO and co-founder with 16 years of experience building and operating complex systems, combining founder-level responsibility with deep hands-on expertise in infrastructure, backend development and security. He leads technology strategy at Carecode while running consulting work through Ab Lyc Oy, and has a track record of managing IT teams and architecture from startups like ZenRobotics to enterprise internships at Google. A pragmatic engineer who enjoys both the holistic, systemic view and low-level problem solving, he contributes to notable open-source projects such as the Matrix Synapse homeserver and the Revel Go framework, focusing on documentation quality, security fixes and maintainability. His background includes SRE roles and student-led technical projects released as open source, reflecting a bias toward production-grade, observable systems. Known for screening calls and preferring email, he brings a no-nonsense, deliverable-focused leadership style informed by an M.Sc. in Computer Science.
16 years of coding experience
7 years of employment as a software developer
Sergeant Communications, Sergeant Communications at Air Force AcademyPäivölän kansanopistoMaster of Science (M.Sc.) Computer Science, Master of Science (M.Sc.) Computer Science at Aalto UniversityPrimary SchoolPäivölä
Finnish, English, Swedish, Russian, German
Stackoverflow
817reputation
134kreached
23answers
1question
Github Skills (19)
software-quality10
matrix-org10
go10
revel10
web-framework10
documentation10
apache9
caching9
security9
postgresql8
mercurial6
rsync6
prometheus6
prometheus-alertmanager6
linux6
Programming languages (29)
Github contributions (5)
revel/revel
May 2016 - Oct 2020
A high productivity, full-stack web framework for the Go language.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits, 10 PRs, 72 comments in 4 years 5 months
Contributions summary:Paul primarily focused on code improvements within the Revel framework. Their contributions included fixing import statements, simplifying code based on linting suggestions, and removing unused code. They also addressed error message styles and handled potential XSS vulnerabilities, indicating a focus on code quality and security. Additionally, the user made several updates to the Redis cache implementation.
golangproductivityfull-stackweb-applicationframework
matrix-org/synapse
Sep 2017 - Oct 2022
Synapse: Matrix homeserver written in Python/Twisted.
Role in this project:Technical Writer
Technical WriterContributions:3 reviews, 8 commits, 7 PRs in 5 years 2 months
Contributions summary:Paul primarily contributed to documentation and configuration examples within the Synapse Matrix homeserver repository. Their commits focused on clarifying setup instructions for reverse proxies, PostgreSQL versions, and API usage, while also improving the readability of existing documentation. They also fixed a copy-pasted comment and preserved the host in an apache configuration.
pythonmatrix-synapsematrix-synapse-homeserverhomeservermatrix
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