About Me
Hey, I’m an Elixir developer and software architect with more than 20 years experience and now over 7+ years of production experience building on Elixir and Phoenix. I’ve been the technical founder and CTO of a Smart City / IoT platform (built on Elixir) since 2018 until recently and shipping Elixir/Phoenix/LiveView code every day. Passionate about distributed systems, OTP patterns.
Currently open to: Remote contract/freelance work or full-time positions (EU timezone preferred)
Elixir
- 7+ years production Elixir
- Phoenix Framework & Phoenix LiveView, OTP apps
- OTP patterns: GenServers, Supervisors, process isolation
- Oban for reliable background job processing
Data & Persistence
- PostgreSQL with Ecto
- Row Level Security (RLS) for multi-tenant isolation
- Time-series data with table partitioning
Messaging & IoT
- MQTT broker integration
- LoRaWAN (TTN, Actility/ThingPark), HTTP webhooks, polling, Modbus
- RabbitMQ
Notable Projects
city-monitor.com — CTO / Product Lead (2018–2026)
Real-time Smart City platform serving municipalities with live dashboards, sensor ingestion, alerting, and white-label PWAs.
rockstead.ai — Founder / Developer (Side Project, 2026–present)
Elixir/Phoenix/LiveView application for comparing LLM quality and cost.
Compare 15+ AI models (Claude, Llama, Mistral, etc.) side-by-side via Amazon Bedrock
- Real-time cost breakdowns and document uploads
- Currently in alpha: https://www.rockstead.ai
Infrastructure & DevOps
- AWS: ECS, EC2, RDS, S3, CloudFront, Lambda, Route53, CloudWatch, IAM, VPC
- Docker, GitLab CI/CD, staging/production environments
Background
- 20+ years total software development experience
- Previously: Ruby on Rails, cloud architecture, multiple CTO/tech lead roles
- Built AWS-based PaaS platforms, high-traffic e-commerce systems, blockchain/tokenization platforms
Languages & Experience
Elixir / Phoenix / LiveView: 7+
Ruby / Rails: 10+
JavaScript: 15+
PostgreSQL:10+
AWS: 12+
Interested in: Elixir ecosystem, AI/LLM integration, distributed systems, SaaS platforms
Open Source Contributions
- crate_ruby — Ruby driver for Crate.io database
- activerecord-crate-adapter — ActiveRecord adapter for Crate.io
- skynet_ruby — Gem to interact with SIA Skynet
Links
LinkedIn: https://www.linkedin.com/in/cklocker/
- GitHub: corck (Christoph Klocker) · GitHub
- Email: christoph@vedanova.com
Location & Availability
- Location: Dornbirn, Austria (UTC+1/2)
- Work Style: Remote preferred (open to occasional travel within EU)
- Availability: Open to contract/freelance or full-time opportunities
Looking forward to connecting with the Elixir community! Feel free to reach out if you have interesting projects or opportunities.
