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Available · Remote-only

Martin Janus.

Manufacturing-technology specialist.

Ex–Jaguar Land Rover and Volkswagen Slovakia bodyshops. Twelve years across two OEMs — Audi Q7 & Q8, VW Touareg, Land Rover Defender, Discovery. Internal CATIA V5 + 3DExperience expert at JLR Nitra, mentored engineers across the bodyshop. Built 10,500 lines of solo VBA + C# tooling at JLR that still runs in production today. Now founding Quizzolingo — selected as a Hummelnest startup-programme candidate (Austria, Jan–Mar 2026), pre-screened by Raiffeisenlandesbank. Remote-only worldwide.

$ location: Slovakia  ·  relocating Thailand Q2 2027  ·  Estonian e-resident

Portrait of Martin Janus
Hummelnest 2026

Selected work

Production code, not portfolio code.

Six projects spanning twelve years on the shop floor, two OEMs, and the founding of a SaaS. Several still run in production today.

JLR Slovakia · 2021–2022 (still in daily use)

Autobolting Data Reporting

Solo-built 10,500-line VBA application with 8 custom userforms. Station-specific data processing for L462 and L663 vehicle programmes (Defender, Discovery). Auto-generated PDF shift reports with date-hierarchical archival. Used daily across bodyshop operations; still running in 2026 with no replacement.

  • VBA
  • Excel
  • UserForms
  • PDF export

JLR Slovakia

Robot Maintenance Heatmap

Multi-hundred-row Excel + VBA workbook visualising maintenance faults across every robot on the production line. One column per day, one row per robot, cell colour intensity (none → red) reflecting fault frequency. Surfaced degradation patterns at a glance and informed scheduled-downtime decisions.

  • VBA
  • Excel
  • Conditional formatting
  • Data viz

JLR Slovakia · 2020–2023 · first C# project, pre-AI, fully solo

Tooling Designer (CATIA V5)

Windows desktop app that automated tooling-design file naming and assembly generation for JLR Nitra bodyshop engineers. ~6,900 lines of hand-written C# across 19 modules — login, theming, user/app settings, data editor, CATIA V5 hide-show + replace-missing workflows, a 2,700-line assembly-generator engine, and a Cryptolens-backed trial/license system. Talks to CATIA via its COM type libraries (Infrastructure / Knowledgeware / ProductStructure). Self-taught from Microsoft docs and Stack Overflow — obsolete today, archived for reference.

  • C#
  • .NET
  • WinForms
  • CATIA V5 COM API
  • Cryptolens

JLR Slovakia

DB Reporting Automation (Selenium)

When direct API access to a corporate database was denied, built a C# + Selenium tool that automated the web UI — logging in, running SQL queries through the browser interface, scraping results, and parsing them into structured data. Engineering pragmatism under enterprise access constraints.

  • C#
  • Selenium
  • SQL
  • Web automation

Founder · Jan 2026 – present

Quizzolingo

Multi-tenant B2B + B2C SaaS learning platform. 11 question types, AI-generated content in 5 languages, real-time multiplayer via SignalR, Stripe-powered marketplace with creator payouts. Estonian OÜ in formation. Selected as a Hummelnest startup-programme candidate (Austria, Jan–Mar 2026), pre-screened by Raiffeisenlandesbank.

  • React
  • TypeScript
  • .NET 8
  • SQL Server
  • Stripe
  • SignalR
  • Azure
quizzolingo.com

Founder · 2026 – present (building)

Rakkan

Real-time chat for cross-language couples. Persistent per-conversation context — relationship, register, glossary, known people — is injected into every translation, plus back-translation so the sender sees how their message will actually read before it lands. 1:1 WebRTC video with live translated captions (Azure Speech), auto-memory extraction of durable facts (birthdays, names, places — partner-confirmed), Web Push + installable PWA. EN/TH/DE/IT/SK UI. Built from a validated prototype after the founder's partner kept asking for it.

  • Next.js 14
  • ASP.NET Core 8
  • SignalR
  • Azure SQL
  • Azure OpenAI
  • Azure Speech
  • WebRTC
  • Stripe
rakkan.app

Built for a friend's coffee + smoothie shop · 2025

Ammy Cafe (Pattaya, Thailand)

Bilingual (Thai / English) public menu + admin CRUD for a café on Soi Buakhao. Built and deployed solo on Cloudflare's free tier — Next.js 15 (App Router, RSC) running on Cloudflare Pages + Workers, with Cloudflare D1 (SQLite) backing menu, photos, and settings. Shows breadth beyond industrial work — modern web stack, real production deployment, real customers.

  • Next.js 15
  • TypeScript
  • Cloudflare Pages + Workers
  • Cloudflare D1
  • i18next
ammy.cafe

Experience

Twelve years, shop floor up.

  1. Entrepreneur

    Independent

    2026 – present

  2. Design Engineer

    PROXTON Engineering

    2024 – 2025

  3. Project Engineer

    Jaguar Land Rover Slovakia

    2023 – 2024

  4. Manufacturing Engineer

    Jaguar Land Rover Slovakia

    2019 – 2023

  5. Process Engineering Tech.

    Volkswagen Slovakia

    2013 – 2018

  6. Chassis Welder

    Volkswagen Slovakia

    2011 – 2013

About

Engineer first. Builder always.

Born 1991, based in Slovakia until mid-2027, Thailand-bound after that. Started on the shop floor as a chassis welder at 20 and worked up through five process-engineering roles at Volkswagen and Jaguar Land Rover. Internal CATIA + 3DExperience SME, comfortable shipping production code in C# and VBA when API access is denied or there’s no off-the-shelf tool.

Languages
Slovak C2
English C1 / C2 recv.
German A1 / B1 recv.
Hungarian A1 / B2 recv.
Turkish A1 learning
Thai planned
Setup
Remote-only
Slovakia · Thailand Q2 2027
Estonian e-resident
Timezone-flexible
Domains
Manufacturing tech
CATIA V5 / 3DExperience
C# · VBA · Selenium
Industrial SaaS GTM

Contact

Let’s work together.

Quickest path is email — typically reply within a business day.

Available for

  • Fractional / part-time advisory — manufacturing-tech, industrial SaaS go-to-market.
  • Expert-network calls — automotive launches, CATIA / 3DExperience, body-shop processes.
  • Freelance automation — C# / VBA / Selenium projects, custom CAD tooling.
  • Solutions Engineer / Industrial PM — remote, EU-based or worldwide via EOR.

Currently Slovakia-based. Relocating permanently to Thailand in Q2 2027 — Estonian e-resident, fully timezone-flexible.