Zurich, Switzerland

Senior Software Engineer& Technical Lead

I build reliable production software and lead engineering teams, staying hands-on across frontend, backend, data, deployment, and observability.

  • Production Systems
  • Platform Engineering
  • Reliability
  • Performance
  • Observability

About

Reinhard Zach

My professional background is in healthcare and enterprise software, where I have built production systems that depend on correctness, reliability, and clear operational workflows. I currently lead a six-person engineering team while staying hands-on across frontend, backend, data, deployment, and production concerns.

My work combines technical direction with implementation: clarifying requirements, guiding architecture, reviewing code, mentoring engineers, and improving performance and operability. I value pragmatic solutions that teams can understand, evolve, and maintain under production pressure.

Experience

My background spans technical leadership, reliable data-heavy systems, operator-facing workflows, integrations, observability, deployment, and pragmatic delivery across production software environments.

Current role

Team Lead & Tech Lead

2026–present

I currently lead a six-person software engineering team at CISTEC building healthcare software, combining technical direction and team leadership with hands-on implementation across React, TypeScript, Java, Oracle, and production delivery workflows.

The work centers on reliable data flows, understandable failure states, operability, observability, careful change management, and software that teams can maintain under production pressure.

  • Lead planning and day-to-day delivery for a six-person engineering team through architecture guidance, code review, mentoring, and implementation support.
  • Collaborate with product owners and stakeholders to clarify requirements, evaluate trade-offs, and turn complex healthcare workflows into usable software.
  • Set technical direction for performance-sensitive, maintainable React, TypeScript, Java, and Oracle systems and support their delivery through Kubernetes/Argo CD deployment workflows.
  • Support production readiness through release processes, CI/CD, monitoring, and pragmatic debugging across frontend, backend, and data workflows.

Senior Full-Stack Developer

2024–2025

Built and improved data-heavy production software across frontend, backend, database, release, and operational concerns before moving into the current leadership role.

  • Reworked a performance-critical TypeScript JSON parsing library, making benchmarked parsing 25x faster and reducing user-facing load times by around 80%.
  • Delivered healthcare workflows with React, TypeScript, Java, Node.js, and Oracle where correctness, traceability, privacy, and maintainability were critical.
  • Improved production readiness through refactoring, clearer interfaces, testing, structured logging, release support, and pragmatic technical cleanup.

Freelance Full-Stack Developer

Independent work, 2019–2023

Delivered customer portals and business applications across frontend, backend, APIs, deployment workflows, and stakeholder requirements.

  • Worked with React, Node.js, Java, Ruby, C#/.NET Core, ASP.NET, REST APIs and CI/CD.
  • Handled requirements analysis, implementation, UI/UX detail and pragmatic delivery decisions.

Software Engineer

Earlier engineering roles, 2010–2018

Built software across test automation, enterprise systems, ERP integrations, building automation, and web applications, forming a broad engineering base beyond one technology stack.

  • Previous roles include Tricentis, Vienna University of Technology, More Dimensions and VBV Pension Fund.
  • Worked across test automation tooling, cultural institution software, building automation systems and enterprise integrations.

Work

Selected Work

Selected work across performance, reliability, observability, and product engineering. Company work is summarized without proprietary details.

Additional technical range

Building monitoring gateway and research paper

Built a Java-based Raspberry Pi data gateway for university research, integrating wireless sensor streams, local Derby persistence during connection loss, and reliable forwarding to a remote monitoring service. I validated it with more than 100,000 measurements, first-authored the resulting conference paper, and presented the work at ECPPM 2014 in Vienna.

  • Java
  • Data Integration
  • Offline Recovery
  • Embedded Database
  • Systems Engineering
  • Research

Robotics platform projects

In my spare time, I explore robotics platform engineering through public prototypes covering fleet operations, telemetry health, reconnect recovery, ROS 2, and simulation. This work is separate from my professional production experience.

  • TypeScript
  • C++
  • Python
  • Systems Reliability
  • Personal Projects

Crowdsourced usability testing engine prototype

Built a 2nd-place company hackathon prototype for a usability-testing engine that sent microtasks to Amazon Mechanical Turk, exploring how crowd workflows could produce fast product feedback.

  • Hackathon
  • Usability Testing
  • Amazon Mechanical Turk
  • Prototype

Published Android game and Steam Greenlight project

Built 3D physics-based games involving real-time simulation, collision detection, and spatial interaction systems, including a released Android game that reached over 2,000 installs and a PC game accepted through Steam Greenlight community voting.

  • Unity
  • C#
  • Blender
  • 3D Game Development
  • Physics
  • Collision Detection

Education

Formal education in software engineering, computer science, and information technology.

Contact

I am always interested in thoughtful conversations about senior software engineering, technical leadership, full-stack development, and reliable production systems.