Ron Jansen

Fractional Trading Systems Architect | 40 Yrs B2B Engineering (Lisp to LLMs) | Bridging Legacy Infrastructure with AI

Bordon, England, United Kingdom

About

I build systems for people who need their things to actually work. Very bad at corporate fluff, I don’t play politics, and I don't manage massive human teams anymore. I am a Fractional Architect with nearly half a century of commercial engineering and trading experience. Today, I advise companies with all sorts tech and orchestrate my own autonomous AI dev squad, allowing me to design and ship production-ready systems at lightning speed. Half-Century Track Record: 1970s & 80s: Started trading options in '78 on the EOE. Wrote my first tech analysis tool in '82 mnemonics running on 64k. COBOL/Prolog/Fortran while studying IT & Civil Engineering. 1990s: Building trading systems that actually survived real market condition for institutions/HNW while managing a 1m NLG portfolio. TradeStation VAR and early EasyLanguage pioneer. 2000s-2020s: Stepped back from active trading to spend two decades as an Enterprise & Salesforce Architect for global giants (Deloitte, Philips, Deutsche Bank, Infosys, ABB). 2026 (Present): Back into part-time trading & system modeling on TradingView. Fixing challenges (eg broken infrastructure) leveraging AI stacks eg Vertex LLM architecture, If your enterprise architecture is a mess, your trading models need robust execution, or your CRM is bleeding clients, I design the solution and my squad builds it. HOW TO WORK WITH ME: Drop me a DM with the specific problem you are facing. If it is something I can fix, let's talk (minimum £5k /USDC equivalent). If i can't help you, I will tell you immediately so we don't waste each other's time.

Experience

  • Self Employed (10 yrs 2 mos)
    • Fractional trading system architect/orchestrator
      Feb 2026 - Present · 5 mos

      Providing fractional architecture (1-2 days/week) for proprietary trading firms, FinTechs, and family offices. Specializing in automated Salesforce retention systems (drawdown intervention) and trading models. Utilizing AI stack to orchestrate multi-agent execution, delivering full engineering squad output as a solo architect. Project minimum: £5,000.

    • Strategic Advisor
      Jan 2022 - Present · 4 yrs 6 mos

      I help professionals move from reactive billing to proactive revenue defence—automating the recovery of uncollected liabilities and optimizing fee-schedule alignment without increasing staff overhead.

    • Fractional Salesforce architect
      May 2016 - Present · 10 yrs 2 mos

      - Providing strategic architectural reviews and roadmap development for C-level stakeholders. - ​Serving as an external expert for internal Centers of Excellence (CoE) and technical governance boards. - ​Mentoring and upskilling in-house Salesforce teams and junior architects. -​Assessing and creating actionable plans to reduce technical debt and improve system performance.

  • Fractional CTO at ClaimZapper
    Dec 2025 - Present · 7 mos

  • Founder at 12Stay [One To Stay]
    Dec 2021 - Dec 2024 · 3 yrs 1 mo

    Helping professionals find luxury accommodation when working away from home | Serviced accommodation | UK | 5 star ratings | Super host | Corporate lets | STR |

  • Founder at Staiforce
    Dec 2021 - Dec 2024 · 3 yrs 1 mo

    Revolutionising property management for the serviced accommodation and hotel sectors. Most STR software is pretty. Ours is powerful. We've built a comprehensive PropTech OS that is battle-tested and already powering hundreds of units. - We build for ROI, not aesthetics. Our focus is on the engine that makes our partners profitable, unifying bookings, operations, and finance into a single, brutally effective system. - Entry is by invitation only. We are currently accepting applications for our "Founders' Program"—a 90-day accelerator that moves professional operators from chaos to complete control. - Our no-nonsense approach includes a 100% money-back guarantee, completely de-risking the process for our founding partners.

  • Lead architect (Associate consultant) at Deloitte Digital
    Nov 2018 - Apr 2024 · 5 yrs 6 mos