# Track Reconstruction Engineer (m/f/d) at Muraytech

> Germany · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/personio%3Amuraytech%3A2787125 (read 2026-11-09).

## Facts (observed)

- Company: [Muraytech](https://alderhq.app/companies/muraytech)
- Location text: Hamburg
- Where it can be done from (inferred): Germany (evidence: "Location: Hamburg")
- Posted: 2026-09-08 (62 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://muraytech.jobs.personio.de/job/2787125
- Skills listed (inferred): Python, C++

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

### Summary

MuRay Tech is a deeptech spinout from DESY, Hamburg. We're hiring a Track Reconstruction Engineer to build the pipeline that turns raw detector hits into tracks, momenta, and image-ready data for our Active Muon Imaging system. You'll develop track fitting under scattering, detector alignment and calibration, noise rejection, and the in-house simulation stack that trains and validates it all. Direct ownership of the foundation the rest of the imaging pipeline runs on.

### The role

- Develop track reconstruction algorithms for cosmics and low-flux Active Muon Imaging (AMI).
- Suppress detector noise. Ensure reconstruction runs on signal only.
- Fit tracks under scattering. Estimate momentum per track. Scattering effects grow at AMI's lower energies.
- Build a robust detector alignment and calibration procedure. Use cosmic-ray tracks for a first pass. Refine with AMI data from real scans.
- Build the in-house AMI simulation stack, propagating particles through a sample object and the detector. Define the file format the reconstruction pipeline reads and writes.
- Reconstruction framework. Design and implement a scalable, high-throughput event reconstruction framework integrating raw detector hit ingestion, event building, and track fitting to produce structured event data for downstream tomographic imaging
### What you'll bring

- Track fitting algorithm development. You've built tracking algorithms from first principles, not just configured existing HEP frameworks. Kalman filters, Hough transforms, or similar pattern recognition methods.
- Scattering physics and momentum estimation. You know scattering sets the error budget at AMI's lower energies. You extract per-track momentum from the scattering angle.
- Noise and signal separation at the detector level. You've built hit filtering, clustering, and timing cuts. You know the failure modes of the detector technology you're working with.
- Detector alignment and calibration. You've aligned tracking detectors using cosmic-ray tracks, survey data, or both. You treat it as iterative: geometry, resolution, and track fit quality depend on each other.
- Simulation and data format development. You've built or extended a particle transport simulation stack, ideally Geant4. You've designed the file format that stores its output.
- Software engineering in C++ and Python. You write performant code in C++. You use Python to analyze data and prototype fast. You move between both without friction.
### How we work

- Skunkworks approach: We work in small teams with full ownership. We keep it simple, stupid.
- Move fast: a shiny prototype means we spent too long on it. We build to learn. We polish later.
- Disagree together, commit together: we debate and challenge, regardless of title. Then we deliver the decision as one team. We win as a team. We pivot as a team.
- Courage: we always make the call. A mistake isn't a failure: it's proof we're improving. Either way, we own the outcome.
- Honesty and transparency: we share what's really happening, good or bad. That lets everyone make the right call. We stay open. We stay honest.
### What we offer

- Impact: track reconstruction is the foundation the rest of the pipeline runs on. It becomes the image an aerospace or energy customer uses to make a decision.
- Pace: a change you make today gets tested on real data tomorrow. Within a year, your code runs commercial scans, not papers.
- Infrastructure: MuRay has access to active muon sources for real scan data, plus LUMI and in-house servers for compute.
- Network: development and business collaborators include DESY, German Space Agency (DLR), Siemens Energy, Marvel Fusion, Caelora.
- Ownership: an equity plan gives you a meaningful stake in the company.
- Compensation: a salary that reflects your contribution to MuRay's growth.
- Relocation: we support your move. If you're relocating from outside the EU, we help with the paperwork.
### Contact

We are looking forward to hearing from you.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Amuraytech%3A2787125 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.