Ulf Wiger
Chief Technology Officer at Wiger Pilotti Unlimited AB
Örebro, Sweden
Summary
🤩
Rockstar🎓
Top SchoolUlf Wiger is a seasoned CTO and system architect with over 15 years' experience designing carrier-class, distributed soft real-time systems across startups and large corporations. He has led end-to-end product lifecycles—from Ericsson's AXD 301 switch architecture to blockchain work at æternity and device management at Feuerlabs—combining deep Erlang/OTP expertise with strong DBMS and monitoring skills (notably contributions to gproc and Riak's metrics). Ulf bridges research, open source and industrial engineering cultures, bringing practical prototypes into production-grade systems and driving significant technology shifts. Based in Örebro, Sweden, he also brings a rare creative angle—singing opera professionally—that underscores his experience balancing disciplined engineering with performance and communication.
15 years of coding experience
21 years of employment as a software developer
MSEE Cand. Electrical Engineering & Computer Systems, MSEE Cand. Electrical Engineering & Computer Systems at KTH Royal Institute of TechnologyHigh School Science (Naturvetenskap), High School Science (Naturvetenskap) at Fredrika Bremerskolan, Haninge, Sweden
English, German, Swedish
Stackoverflow
131reputation
195reached
1answer
0questions
Github Skills (12)
logging10
process-management10
distributed-systems10
message-passing10
erlang10
otp10
concurrency10
metric10
testing9
key-value-store9
error-handling8
configuration-management8
Programming languages (9)
Github contributions (5)
uwiger/gproc
Jun 2011 - Sep 2020
Extended process registry for Erlang
Role in this project:
Back-end Developer
Back-end DeveloperContributions:14 reviews, 212 commits, 86 PRs in 9 years 5 months
Contributions summary:Ulf contributed significantly to the Erlang-based process registry, gproc, by adding new features such as subscription management, monitoring capabilities, and distributed functionality. Their work involved modifying core modules, specifically `gproc_dist.erl` and `gproc.erl`, to support the new features. These changes included implementing functions for managing and distributing process registrations and their attributes across a distributed Erlang cluster.
gleamerlangextendeddescriptorelixir
erlang-lager/lager
Dec 2017 - Jun 2021
A logging framework for Erlang/OTP
Role in this project:Backend Engineer
Backend EngineerContributions:6 commits, 4 PRs, 9 comments in 3 years 6 months
Contributions summary:Ulf primarily focused on enhancing the logging framework's functionality. They implemented features to control queue flushing behavior, including configuration options and a flush threshold based on message queue length. The user also introduced the ability to silence log output based on trace filter conditions. Furthermore, the user added testing and documentation.
gleamerlangloggererlang-otplogging
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