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Jossef Roncal, software and AI engineer in Geneva

Geneva, Switzerland — Swiss citizen

Jossef Roncal — Machine Learning Engineer & Software Architect

I build AI systems that are allowed to touch real records: measured, auditable, and shipped to production.

Engineer with eight years of building and running a software and fiduciary company in Geneva, and a Master of Science in Engineering (HES-SO), completed in 2026, in Software Engineering. I work where machine learning meets systems of record — accounting, documents, compliance — and I care as much about what a model costs and how it is verified as about what it can do.

Ventures

Ventures

What I have built and still run.

Digital SoftTech

Digital Software Technologies Sàrl

Founder · Geneva · 2021–present

Software & AI engineering for Swiss SMEs: custom ERP and CRM, process automation, applied AI, web and mobile applications. This is where my team and I take on client projects. Operating under the Digital SoftTech brand.

digital-softtech.com

Capabilities

Capabilities

Machine learning in production

LLM agents with tool calling, document intelligence, OCR, Bi-LSTM and Transformer models. PyTorch, TensorFlow, Python.

Cloud architecture

Microservices and event-driven systems on AWS: ECS Fargate, Lambda, S3, SNS/SQS, DocumentDB. Node.js, TypeScript, Docker, CI/CD.

Delivery and governance

Agile project management (Scrum, Jira) with a distributed team, enterprise architecture in ArchiMate under TOGAF.

Selected work

Selected work

Digital Copilot — an LLM agent in production

An agent that reads business documents and creates the corresponding accounting entries through the platform's own API, under human confirmation, with every entry traceable back to its source document. Deployed on AWS in Zurich.

Architect and developer · 2025–present

Precious-metals trading platform — legacy modernization

Modernizing the live e-commerce and buyback platform of a Swiss precious-metals dealer: from legacy PHP to a Node.js/TypeScript API and back office, without interrupting a system that processes real transactions daily.

Lead engineer · 2025–present

WIPO — enterprise technology portfolio

Maintained the technology portfolio of the World Intellectual Property Organization: ArchiMate modelling, BizzDesign scripting, TOGAF — keeping the architecture repository decision-ready for a UN agency.

Enterprise architect · 2022–2024

Master's thesis — document intelligence

Compared a Bi-LSTM classifier I trained against a vision-based LLM agent to decide the architecture of a production pipeline. Graded 6/6.

HES-SO · 2026

Education & languages

Education & languages

Education

  • MSc in Engineering, Computer Science / Software Engineering — HES-SO, 2026
  • BSc in Information Technology Engineering — HEPIA, Geneva, 2021
  • Life Sciences Engineering (coursework) — EPFL, 2013–2016

Languages

  • FrenchNative
  • SpanishBilingual
  • EnglishC1 — Cambridge C1 Advanced
  • ItalianB2 — Swiss Matura
  • GermanB1 — Goethe-Zertifikat B1