Next-Generation Web Design, App Development, AI Solutions, and Business Tech Infrastructure.
Over 20 years of building high-performance digital solutions. From custom webshops and lean Android apps to fine-tuning multimodal AI for global tech giants, I deliver elite technical execution for your business.
JIMMY BOY GERSON LOHMAN
Master Developer & Systems Architect
Coding since pre-internet era, building digital platforms since 2004.
I created school collaboration systems and social platforms before Facebook even existed. I am a fast learner and a dedicated professional who believes that exceptional commitment and hard work form the baseline for success. I thrive on autonomy and exploring new tech territories.
I have moderated deep-tech forums, built multi-million turnover business systems, and worked alongside giants like Apple and Amazon to establish reliable ground-truth datasets for NLP algorithms. Beyond code, I am a casual geek who loves gadgets, home automation, cooking, and solving daily technical puzzles.
20+
Years Experience
100%
Autonomous Execution
AI & Web
Full-Stack Mastery
Digital Presence, Web & App Development
Crafting fast, conversion-driven web platforms, mobile apps, and absolute search dominance.
Niche Web Expertise
Proven track record creating high-converting websites for restaurants, campsites, Bed & Breakfasts, photographers, and comprehensive webshops engineered for extreme speed and smooth user experience.
Lean Android Apps
Full-cycle creation and publishing of custom Android applications in the Google Play Store. Focused on lean, lightweight builds with excessive functionality through seamless API integrations.
Modern Discoverability (SEO, AEO, GEO)
Optimizing architecture and content so businesses rank high on Google, get featured in smart assistants, and are cited by generative AI tools like ChatGPT and Gemini.
Branding & Identity
Custom logo design, color systems, and corporate identity development that aligns perfectly with your technical build for maximum professional impact.
AI Services & Data Operations
Training, fine-tuning, and evaluating multimodal LLMs for elite AI performance.
LLM Fine-Tuning & Grading
Delivering high-quality multimodal labeled data to train, refine, and evaluate large language models and speech recognition systems.
Data Quality Assurance
Applying deep analytical judgment to resolve data ambiguities, identify error patterns, and maintain strict confidentiality guidelines.
Process Optimization
Supporting AI project pipelines through cross-team collaboration and guideline refinement to meet rigorous operational KPIs.
Business IT, SaaS & Infrastructure
Robust hardware builds, remote support, and cloud software integrations.
SaaS Configuration
Helping companies navigate, set up, and integrate cloud software into daily operations.
Custom Business Tools
Building and deploying custom CRMs and tailored internal portals to streamline workflows.
Hardware & Remote Support
Building high-performance PCs from scratch & fast TeamViewer support for Windows, Mac, Linux.
Network & Workspace
Configuring servers, VoIP systems, virtual environments, and physical office IT.
The "Why Me" Matrix
Why elite entrepreneurs and corporations partner directly with Jimmy Boy.
Agile & Autonomous
No hand-holding required. Give me a goal and I will execute it with extreme precision and speed.
Broad Knowledge Spectrum
From hardware to vibing code and training LLMs, I master the entire tech stack.
Direct Communication
You talk directly to the builder, avoiding account manager bottlenecks and miscommunication.
Performance Focused
Everything I build is engineered for speed, high conversion, reliability, and business impact.
The Innovation Lab & Brainstorming Hub
Open to absolutely everything tech-related. If a technology exists, I am ready to dive into it. Do you have a wild concept, a weird hardware integration challenge, or an idea that does not fit into standard categories? My door is always open for completely custom concepts. Let us sit down, brainstorm, and figure out how to build it.
Project Intake & Contact
Ready to elevate your tech stack? Send a message directly to jbgl@jimmyboy.nl.