About Thomas
Senior Software & Platform Engineer with 10+ years in business-critical backend and platform environments — specializing in PostgreSQL performance, Kubernetes infrastructure, and production operations.
Strong track record stabilizing legacy systems, improving operational reliability, and resolving complex production and performance issues across application, database, and infrastructure layers. Experienced in incident analysis, cross-layer troubleshooting, and deployment workflow optimization.
Background spans backend development, platform engineering, observability, release engineering, DevEx, and compliance-aware systems.
German
Native or bilingual
English
Fluent
Italian
Conversational
Can work on-site
Landquart (up to 50km), Zürich (up to 50km), St. Gallen (up to 50km), Basel (up to 50km), Luzern (up to 50km)
Experience
- wiesion.chSenior Software & Platform EngineerSOFTWARE PUBLISHINGJuly 2016 - Today (9 years and 11 months)Landquart, Switzerland
Key Engagement Highlights
- Creating containerized applications and operating its production infrastructure since 8+ years (medtech and fintech)
- Reduced import processing runtime from >2h to <1min through architecture overhaul (Script based import to proper Postgres ETL/ELT pipeline)
- Led GitOps/ArgoCD migration for Kubernetes workloads in an understaffed environment
- Resolved enterprise MS SQL performance dispute through systematic root-cause analysis
- Introduced GitFlow, eliminating recurring regression cycles and stale release branches
- Designed observability and alerting workflows with Datadog/Sentry
- Designing and implementing hybrid retrieval architectures for regulation-sensitive workloads
Core Skills
- Backend & Data: Python, Django, FastAPI, Flask, Django Ninja, Django REST Framework, Ruby, Rails, Sinatra, PostgreSQL, PgBouncer, SQL Server, MySQL
- Platform & Ops: Linux (Debian), Kubernetes (K8s), Helm Charts, GitOps (ArgoCD), Docker, Containerization, Datadog, Sentry, Prometheus, CI/CD Pipelines (GitLab, Github Actions)
- Quality & Release: GitFlow, Release Branch Management, Selenium Test Automation, CI/CD Workflows, DevEx (Tools, Workflows, Automation, Docs)
- LLM / GenAI: LangChain, LangGraph, MCP, Qdrant, Neo4j, vLLM local Inferencing setup
- Other: Claude Code, OpenCode (via self hosted LLM), Agile, Scrum, Kanban, JavaScript, HTML/CSS, Redmine (on-prem, Plugin dev.), Sentry on-prem, GitLab on-prem
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