![Rene Prost](https://jobicy.com/react/themes/app/images/avatar.jpg) Rene Prost # Senior AI Systems Engineer | Software Architect | Senior .NET Engineer Open to offers · Member since 28 Jul 2026 [Message](https://jobicy.com/dashboard-page.md) ShareLocationTartu, EstoniaDesired salaryUnspecifiedWork preferenceRemote Only / Full TimeExperience levelSenior * [Overview](#overview) * [Portfolio 0](#portfolio) * [Services 0](#services) ## About Professional summaryI am a senior software architect and AI systems engineer with more than 20 years of experience building production C# and .NET systems across banking, payments, government, healthcare, transport, ERP, and SaaS environments. I have spent much of my career modernising business-critical platforms, translating architecture direction into detailed designs, and delivering reliable full-stack solutions in complex enterprise settings. In recent years, I have focused heavily on AI systems engineering, including multi-agent runtimes, local LLM inference, model training and fine-tuning, pruning, quantization, and self-hosted GPU infrastructure. I enjoy working at the intersection of software architecture, distributed systems, and applied AI, especially where performance, reliability, and maintainability matter. I also bring formal team leadership and coaching experience, with a strong emphasis on code quality, engineering standards, stakeholder communication, and pragmatic delivery. I am fluent in English and native in Estonian, and I am available for remote roles across the EU/EEA. ## Skills 70 capabilities[Agile](https://jobicy.com/talent/agile.md)[Angular](https://jobicy.com/talent/angular.md)[Application Insights](https://jobicy.com/talent/application-insights.md)[ArgoCD](https://jobicy.com/talent/argocd.md)[ASP.NET Core](https://jobicy.com/talent/aspnet-core.md)[AWS](https://jobicy.com/talent/aws.md)[Azure AD](https://jobicy.com/talent/azure-ad.md)[Azure AI Foundry](https://jobicy.com/talent/azure-ai-foundry.md)[Azure Container Apps](https://jobicy.com/talent/azure-container-apps.md)[Azure DevOps](https://jobicy.com/talent/azure-devops.md)[Azure SQL](https://jobicy.com/talent/azure-sql.md)[Bicep](https://jobicy.com/talent/bicep.md)[Bootstrap](https://jobicy.com/talent/bootstrap.md)[C#](https://jobicy.com/talent/c-sharp.md)[C++](https://jobicy.com/talent/c-plus-plus.md)[CI CD](https://jobicy.com/talent/ci-cd.md)[Claude Code](https://jobicy.com/talent/claude-code.md)[Code Review](https://jobicy.com/talent/code-review.md)[CQRS](https://jobicy.com/talent/cqrs.md)[CSS](https://jobicy.com/talent/css.md)[Cursor](https://jobicy.com/talent/cursor.md)[Datadog](https://jobicy.com/talent/datadog.md)[Distributed Systems](https://jobicy.com/talent/distributed-systems.md)[Docker](https://jobicy.com/talent/docker.md)[Domain Driven Design](https://jobicy.com/talent/domain-driven-design.md)[EF Core](https://jobicy.com/talent/ef-core.md)[Entity Framework](https://jobicy.com/talent/entity-framework.md)[Entra ID](https://jobicy.com/talent/entra-id.md)[ETL](https://jobicy.com/talent/etl.md)[Event Driven Architecture](https://jobicy.com/talent/event-driven-architecture.md)[GitHub Actions](https://jobicy.com/talent/github-actions.md)[GitOps](https://jobicy.com/talent/gitops.md)[gRPC](https://jobicy.com/talent/grpc.md)[HTML](https://jobicy.com/talent/html.md)[Hugging Face](https://jobicy.com/talent/hugging-face.md)[Image Processing](https://jobicy.com/talent/image-processing.md)[Integration Testing](https://jobicy.com/talent/integration-testing.md)[JavaScript](https://jobicy.com/talent/javascript.md)[Jira](https://jobicy.com/talent/jira.md)[Kubernetes](https://jobicy.com/talent/kubernetes.md)[LangGraph](https://jobicy.com/talent/langgraph.md)[Large Language Models](https://jobicy.com/talent/large-language-models.md)[Mentoring](https://jobicy.com/talent/mentoring.md)[Microservices](https://jobicy.com/talent/microservices.md)[Microsoft Azure](https://jobicy.com/talent/microsoft-azure.md)[Microsoft Dynamics 365](https://jobicy.com/talent/microsoft-dynamics-365.md)[Microsoft SQL Server](https://jobicy.com/talent/microsoft-sql-server.md)[MongoDB](https://jobicy.com/talent/mongodb.md)[Next.js](https://jobicy.com/talent/next-js.md)[NHibernate](https://jobicy.com/talent/nhibernate.md)[OAUTH2](https://jobicy.com/talent/oauth2.md)[OpenID Connect](https://jobicy.com/talent/openid-connect.md)[OpenTelemetry](https://jobicy.com/talent/opentelemetry.md)[PostgreSQL](https://jobicy.com/talent/postgresql.md)[Python](https://jobicy.com/talent/python.md)[RabbitMQ](https://jobicy.com/talent/rabbitmq.md)[React](https://jobicy.com/talent/react.md)[Redis](https://jobicy.com/talent/redis.md)[Schema Design](https://jobicy.com/talent/schema-design.md)[Scrum](https://jobicy.com/talent/scrum.md)[Secure Coding](https://jobicy.com/talent/secure-coding.md)[Sglang](https://jobicy.com/talent/sglang.md)[Software Architecture](https://jobicy.com/talent/software-architecture.md)[SOLID Principles](https://jobicy.com/talent/solid-principles.md)[SQL](https://jobicy.com/talent/sql.md)[Team Leadership](https://jobicy.com/talent/team-leadership.md)[Tensor Parallelism](https://jobicy.com/talent/tensor-parallelism.md)[Test Driven Development](https://jobicy.com/talent/test-driven-development.md)[TypeScript](https://jobicy.com/talent/typescript.md)[Unit Testing](https://jobicy.com/talent/unit-testing.md) ## Tech stack & tools Working toolkit ### Application Hosting [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/azure/azure-original.svg) Azure](https://jobicy.com/talent?tool=azure.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/redis/redis-original.svg) Redis](https://jobicy.com/talent?tool=redis.md) ### Collaboration [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/jira/jira-original.svg) Jira](https://jobicy.com/talent?tool=jira.md) ### Data Stores [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/mongodb/mongodb-original.svg) MongoDB](https://jobicy.com/talent?tool=mongodb.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/postgresql/postgresql-original.svg) PostgreSQL](https://jobicy.com/talent?tool=postgresql.md) ### Development [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/argocd/argocd-original.svg) Argocd](https://jobicy.com/talent?tool=argocd.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/docker/docker-original.svg) Docker](https://jobicy.com/talent?tool=docker.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/kubernetes/kubernetes-original.svg) Kubernetes](https://jobicy.com/talent?tool=kubernetes.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/rabbitmq/rabbitmq-original.svg) RabbitMQ](https://jobicy.com/talent?tool=rabbitmq.md) ### Languages & Frameworks [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/angular/angular-original.svg) Angular](https://jobicy.com/talent?tool=angular.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/bootstrap/bootstrap-original.svg) Bootstrap](https://jobicy.com/talent?tool=bootstrap.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/react/react-original.svg) React](https://jobicy.com/talent?tool=react.md) ### Libraries [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/nhibernate/nhibernate-original.svg) NHibernate](https://jobicy.com/talent?tool=nhibernate.md) ### Monitoring [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/datadog/datadog-original.svg) DataDog](https://jobicy.com/talent?tool=datadog.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/opentelemetry/opentelemetry-original.svg) OpenTelemetry](https://jobicy.com/talent?tool=opentelemetry.md) ## Experience Career history ### Senior AI Systems Engineer & Software Architect · Self-employed Apr 2026 – PresentI architected a role-specialised multi-agent platform on an approximately 30,000-line Python runtime, using domain-driven boundaries, clean architectural layering, and strict per-agent tool-surface isolation. I built and operate a 6-node self-hosted GPU inference fleet with 10 GPUs and roughly 496 GB VRAM, centred on a custom 4× RTX PRO 6000 Blackwell machine assembled by hand. I also stood up local LLM serving on vLLM and SGLang with tensor parallelism and FP8/NVFP4 quantization, designed a role-replay evaluation harness, performed a REAP expert-prune of Qwen3.5-397B-A17B, and published the pruned model on Hugging Face. ### .NET Software Developer · Novater Solutions OÜ Mar 2025 – Apr 2026I extended and maintained a large, long-running .NET application for the Estonian Transport Administration, translating architecture direction into detailed designs within a business-critical public-sector codebase. I led and coached developers in an agile process, reviewed code, maintained engineering standards, and communicated requirements and trade-offs with stakeholders. I built full-stack features spanning ASP.NET Core Web APIs, background processing, and Angular front ends, while integrating X-Road, eID, OAuth2, OpenID Connect, Microsoft SQL Server, Azure DevOps, and Application Insights. ### Independent Software Engineering & AI Research · Self-employed Jun 2024 – Mar 2025I self-hosted and benchmarked open-weight large language models, building inference servers in Python and comparing quantization formats for quality and throughput. I prototyped tool-using agents and orchestration patterns, including LangGraph-based workflows and multimodal experiments, taking ideas from concept to working demonstration. I also trained and fine-tuned neural networks and turned working experiments into reusable architecture patterns, assembling the initial GPU hardware behind my current production fleet. ### .NET Software Developer · Connected OÜ Jan 2023 – Jun 2024I maintained and extended a mature C# and .NET line-of-business client-server application used daily for core business operations, backed by AWS-hosted services on Docker and ECS. I diagnosed complex, hard-to-reproduce production issues across a large legacy codebase and delivered long-term fixes without disrupting established workflows or SQL Server data integrity. ### .NET Software Developer · Fujitsu Estonia AS Oct 2019 – Jan 2023I delivered and maintained the hospital information systems of Põhja-Eesti Regionaalhaigla, one of Estonia's largest hospitals, as the primary project. I modernised business-critical clinical and administrative software more than 20 years old, replacing legacy integrations with modern Web API surfaces without disrupting hospital operations. I developed full-stack .NET modules and Angular hospital web front ends with Entity Framework and NHibernate over Microsoft SQL Server and PostgreSQL, using Docker, React, test-driven development, and Scrum. ### .NET Software Developer · Registers and Information Systems Centre (RIK) Apr 2017 – Sep 2019I built and maintained .NET systems powering Estonian e-government registries used daily by citizens, businesses, and public authorities at national scale. I modelled complex regulatory rules into reliable, auditable domain logic with validation, data consistency, and full traceability for legally significant records. I also developed public e-services integrating national authentication and secure data-exchange infrastructure with high-availability production support. ### .NET Software Developer · Uptime OÜ / Turnit OÜ Nov 2012 – Feb 2017I developed and maintained .NET reservation, ticketing, and payment systems for coach and bus operators, processing high volumes of financial transactions reliably through the full order lifecycle. I built booking and fare logic, seat and inventory allocation handling, and payment-provider integrations, maintaining correctness and consistency under real-world load. ### .NET Software Developer · Registers and Information Systems Centre (RIK) Jan 2008 – Nov 2012I developed and maintained modules of the Court Information System, the national platform managing court cases and proceedings for Estonia's judiciary. I helped introduce domain-driven design and clean-code practices, coaching the team toward more maintainable enterprise software. ### .NET Developer · Softronic Baltic AS Dec 2005 – Dec 2007I developed core functionality for the Court Information System and other substantial public-sector .NET platforms as a software vendor to RIK. I grew from foundational development into professional enterprise software-engineering practice alongside experienced engineers. ### IT Specialist · Estonian Air Force (Lennubaas) Apr 2004 – Nov 2005I administered servers, workstations, and computer networks, building solid networking fundamentals. I also developed early internal .NET web applications, which helped establish my long-term path into software engineering. ## Education Learning history ### Tallinn University of Technology (TalTech) Jan 1999 – Jan 2002BSc, Computer Science Bachelor's degree in Computer Science. This professional hasn’t added portfolio projects yet. 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