Open to opportunities

Rene Prost

@reneprost

Message

Senior AI systems engineer building production C#/.NET platforms and local LLM inference fleets.

Estonia

Message

What I'm looking for

I’m looking for remote roles across the EU/EEA where I can design production-grade C#/.NET systems and build practical AI infrastructure (local LLM inference, evaluation, and orchestration) with a team that values standards and validation.

I’m a senior AI systems engineer and software architect with 20+ years building production C# and .NET systems across banking, payments, government, healthcare, transport, ERP and SaaS. I modernise long-lived business-critical platforms and design microservices, event-driven and cloud-native architectures on Azure and AWS.

I’ve spent the last two years on hands-on large language model work, including a 30,000-line multi-agent runtime, a self-hosted GPU inference fleet, and model training, fine-tuning and pruning published on Hugging Face. I combine that with daily AI-assisted engineering using Claude Code and Cursor, while rigorously validating every output.

After several years formally leading and coaching development teams, I bring engineering standards, clear specifications and stakeholder communication to complex deliveries. Whether it’s legacy modernisation or building new platforms like CarCare / MechanicBuddy, I focus on reliability, security, and clean architecture that scales.

Experience

Work history, roles, and key accomplishments

Current

AI Systems Engineer & Architect

Current

Self Employed

Apr 2026 - Present (4 months)

Architected a role-specialised multi-agent platform and designed/operated a self-hosted GPU inference fleet for local LLM serving and evaluation. Maintains a production .NET 9 and Next.js multi-tenant SaaS (CarCare) and builds AI-assisted engineering workflows.

.NET Software Developer

Novater Solutions OÜ

Mar 2025 - Apr 2026 (1 year 1 month)

Extended and maintained a large .NET application for the Estonian Transport Administration, translating architecture direction into detailed designs. Led and coached developers, built full-stack features, and integrated national data-exchange and authentication infrastructure.

.NET Angular RabbitMQ EID OpenID Connect Microsoft SQL Server Azure DevOps Application Insights CI CD

.NET Software Developer

Connected OÜ

Jan 2023 - Jun 2024 (1 year 5 months)

Maintained and extended a mature C#/.NET client-server application used for core business operations. Diagnosed production issues in a legacy codebase and delivered long-term fixes while preserving SQL Server data integrity.

C#.NET AWS Docker Production Troubleshooting SQL Server

.NET Software Developer

Fujitsu Estonia AS

Oct 2019 - Jan 2023 (3 years 3 months)

Delivered and maintained hospital information systems for Põhja-Eesti Regionaalhaigla (North Estonia Medical Centre) as the primary project. Modernised legacy integrations, built full-stack .NET modules and Angular front ends, and applied TDD and domain-driven design while mentoring developers.

.NET Web APIs Angular Entity Framework NHibernate Microsoft SQL Server PostgreSQL Test Driven Development Domain Driven Design Docker React Scrum

.NET Software Developer

Registers and Information Systems Centre (RIK)

Apr 2017 - Sep 2019 (2 years 5 months)

Built and maintained .NET systems powering Estonian e-government registries used by citizens and public authorities. Modeled regulatory rules into auditable domain logic and developed secure public e-services integrating eID and X-Road.

.NET E Government Registry Domain Driven Design Validation E Service EID

.NET Software Developer

Uptime OÜ / Turnit OÜ

Nov 2012 - Feb 2017 (4 years 3 months)

Developed and maintained .NET reservation, ticketing, and payment systems for coach and bus operators. Implemented booking and fare logic, seat/inventory allocation, and payment-provider integrations to reliably process high-volume transactions.

.NET Ticketing Systems Payment Systems Payment Processing Booking and Fare Logic Payment Integration

.NET Developer

Softronic Baltic AS

Dec 2005 - Dec 2007 (2 years)

Developed core functionality for the Court Information System and other public-sector .NET platforms as a software vendor to RIK. Expanded from foundational development into professional enterprise software engineering practice.

.NET Enterprise Software Development Court Information System Public Sector Platforms