Muhammad S.-Senior AI/ML Engineer | GenAI, RAG & Fine-Tuning | Python & MERN Stack | SFT & RLHF Specialist
Check rate
Experience
Full Stack Engineer
ACTIMI
- Building FHIR-compliant healthcare full-stack with React, React Native, and NestJS — patient apps + clinician web panels integrated via MedPlum.
- Shipped end-to-end test coverage with Jest + Cypress, cutting regression issues caught in production.
- Designed and implemented mobile features (offline sync, secure push, deep linking) for React Native modules used by clinicians on the move.
- Reviewed AI/RAG integration approaches for clinical knowledge retrieval — applied learnings from master's thesis on RAG pipelines.
- Drove code quality through TDD and structured code reviews across cross-functional team.
Full Stack Engineer
Warptec Software GmbH
- Built and operated production Node.js + TypeScript REST APIs powering construction-management workflows; owned reliability end-to-end (monitoring, debugging, iterative releases).
- Designed relational data models (PostgreSQL) and tuned queries to keep response times stable as record counts grew.
- Integrated external APIs and wrote endpoint documentation that unblocked cross-team collaboration with field engineers.
- Established Jest test suites and TDD discipline — measurable drop in release-rollback frequency.
Full-stack Developer
Livello Technologies
- Enhanced MERN-stack web panel (MongoDB, Express, React, Node.js) used to operate a fleet of 500+ IoT smart fridges across Europe.
- Introduced GraphQL endpoints that reduced over-fetching and improved panel responsiveness for fleet operators.
- Built and maintained microservices-based Express APIs interfacing with the IoT team's firmware/device telemetry pipeline.
Full-stack Developer
XPera - Das half mir
- Designed and shipped 4+ web panels and a React Native app on the MERN stack — end-to-end user flows for a multi-sided marketplace.
- Deployed and operated AWS services (EC2, S3, Lambda, API Gateway) for a cost-efficient, scalable production environment.
- Built RESTful APIs in Express integrated with MySQL — structured persistence for transactional data and user records.
Full-Stack Developer on Fiverr and Upwork
Upwork
- 100+ projects delivered with a 5-star average across both platforms; over $70K earned, repeat clients across Europe, US, and Australia.
- Specialised in: MERN stack web apps, React Native mobile apps, REST APIs, AWS deployments, GenAI / RAG integrations for SaaS.
- Recent client work includes: AI document-answering systems (LangChain + FAISS / Pinecone), Shopify integrations, and full-stack MVPs for early-stage founders.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Construction, and Healthcare.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology and Product Development.
Summary
AI / ML Engineer with 5+ years building production AI systems, training pipelines, and intelligent applications across healthcare, logistics, and AI-driven SaaS. Currently shipping FHIR-compliant healthcare platforms with integrated LLM capabilities at ACTIMI (Bamberg, Germany), while leading AI training workflows including SFT, RLHF, and RAG implementations.
- Backend: Python, Django, Fast API, Node.js, NestJS, TypeScript, REST/GraphQL, PostgreSQL, MongoDB, Redis, RabbitMQ, microservices
- Frontend: React, Next.js, Redux, TailwindCSS, Angular, Vue
- Mobile: React Native (production apps with offline sync, push, deep linking)
- Cloud / DevOps: AWS (Lambda, EC2, S3, API Gateway, Amplify), GCP, Docker, Kubernetes, CI/CD
- AI / GenAI: LangChain, LLM integration, RAG pipelines (FAISS, Chroma, Pinecone), Hugging Face — master's thesis on document-based answering with RAG.
Things I've shipped:
- ACTIMI — healthcare full-stack with FHIR + MedPlum; full Jest + Cypress test coverage
- Warptec / Dechant Bau — Node.js + TypeScript, Python/Django backend with relational data models powering construction workflows
- Livello — MERN web panel + GraphQL for a fleet of 500+ IoT smart fridges
- 100+ freelance projects delivered on Upwork & Fiverr (Top Rated), 5-star average, $70K+ earned.
Why hire me / work with me: I own production reliability end-to-end, write tested code (Jest, Cypress, Pytest), iterate fast in startup environments, and bring AI/RAG into product features when it actually moves a metric.
Skills
- Ai Evaluation
- Django
- Large Language Models (Llm)
Languages
Education
Otto-Friedrich-Universität Bamberg
Master in Software Systems Science · Software Systems Science · Bamberg, Germany
COMSATS University Islamabad
Computer Science · Islamabad, Pakistan
Certifications & licenses
Artificial Intelligence
Business Analysis Foundations: Business Process Modeling
Business Benefits Realization Foundations
Elements of AI
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Muhammad is based in Bamberg, Germany.
Muhammad speaks the following languages: Urdu (Native), English (Advanced), Hindi (Advanced), German (Elementary).
Muhammad has at least 9 years of experience. During this time, Muhammad has worked in at least 3 different roles and for 5 different companies. The average length of individual experience is 2 years and 10 months. Note that Muhammad may not have shared all experience and actually has more experience.
Based on recent experience, Muhammad would be well-suited for roles such as: Full Stack Engineer, Full-stack Developer, Full-Stack Developer on Fiverr and Upwork.
Muhammad's most recent position is Full Stack Engineer at ACTIMI.
In recent years, Muhammad has worked for ACTIMI, Warptec Software GmbH, Livello Technologies, XPera - Das half mir, and Upwork.
Muhammad is most experienced in industries like Information Technology, Construction, and Healthcare.
Muhammad is most experienced in business areas like Information Technology and Product Development.
Muhammad has recently worked in industries like Information Technology, Construction, and Healthcare.
Muhammad has recently worked in business areas like Information Technology and Product Development.
Muhammad holds a Master in Software Systems Science from Otto-Friedrich-Universität Bamberg and a Bachelor in Computer Science from COMSATS University Islamabad.
Muhammad has 4 certificates. Among them, these include: Artificial Intelligence, Business Analysis Foundations: Business Process Modeling, and Business Benefits Realization Foundations.
Muhammad will be available full-time from November 2026.
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Calculated based on our freelancers’ daily rates as of 15 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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