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Rehan SathioOpen to work

Rehan Sathio, Full Stack AI Engineer. I build AIthat leavesthe notebook.

I'm Rehan, a full-stack AI engineer in Karachi and an MS AI student. I ship RAG and document-AI pipelines, LLM apps and the product around them: 100+ freelance orders delivered, on-device AI in apps people use every day, open-source infrastructure, and a co-authored paper under review.

See the workBook a 20-min call
100% five-star across 69 client reviews from 19 countries
Portrait of Rehan Sathio

Fig. 01 · Rehan, Karachi

RAGNext.jsFlutterPython

Currently

MS Artificial Intelligence

Bahria University · 3rd semester

orders completed
100+
Freelance builds on Fiverr as a Level 2 seller: web apps, APIs, data pipelines and AI integrations.
Fiverr profile(opens in a new tab)
countries in my reviews
19
Counted from the 69 client reviews on this site, from Finland to Japan to Mexico.
Read the reviews
first program shipped
2019
A Ludo game in C, first semester of computer science. Seven sleepless nights. It worked.
The story
Artificial Intelligence
MS
Third semester at Bahria University Karachi, with a 3.65 CGPA.
Research

01Selected work

Things I built that real people used.

Client systems, AI products, mobile apps and open source. Every number on this page links back to where it came from.

User interface of Ask Bhittai web app.
RAG · Low-resource NLP2026
askbhittai.vercel.app

Research build · Live

Ask Bhittai

My mother tongue had no search engine for its greatest poet, and Roman Sindhi has no standard spelling. Could retrieval still find the right verse?

verse documents indexed
2,519
query benchmark
51
Recall@10
27.45%
Read the case study

A retrieval-augmented search engine over Shah Jo Risalo, the 18th-century Sindhi Sufi poetry of Shah Abdul Latif Bhittai.

01 / 06

Also on the shelf

  1. 07
    Bahria LMS CompanionMobile + web · Real users · 2026
  2. 08
    BrainDumpAndroid · On-device GenAI · 2026
  3. 09
    Invoice IntelligenceDocument AI · OCR · LLM extraction · 2026
  4. 10
    Invoice Approval WorkflowAutomation · n8n · Human-in-the-loop · 2026
  5. 11
    Mirror MeMobile · GenAI virtual try-on · 2023–26 Private code
  6. 12
    AI Expense Receipt AssistantAutomation · n8n · Vision LLM · 2026
All 36 projects & the lab

02Clients, verbatim

In their own words.

reviews
69
countries
19
five-star
100%

Pulled straight from Fiverr: 69 reviews from 19 countries. Typos included. On Fiverr I’m rehan_sathio.

i had another guy working on the same project for almost a month and failed! rehan did it in three days!!!! … Anything he didn't know, he quickly researched and found a resolution immediately.

vasilynaumenkoUnited States · Fiverr · 3 years ago

He immediately understands requirements, and is very tech savvy. … he is not afraid of doing more than asked

abquintanillaMexico · Fiverr · 1 year ago

hit him up late at night, answered right away. Told him the requirements and he started working that night. By the morning, he's done more than 40 % of the work.

tomskowronekCzechia · Fiverr · 2 years ago

This is the fifth time I’ve worked with this developer, and I’m still amazed by his expertise. The website’s AI and data science features are exactly what I needed, and the execution was perfect.

paulstank347Finland · Fiverr · 10 months agoFifth project together

Was having a small melt down, was able to get the fix i need to continue on with my own project.. very patient and would recommend.

twinleeroyIreland · Fiverr · 1 year ago

rehan stayed up all night and finished the whole react dashboard. Very impressive work! I'd definitely work with rehan again.

andygannaway311United States · Fiverr · 2 years ago

Asked to clone and teach me a complex website, with the algorithm! insane.

metoldmeGuam · Fiverr · 3 years ago

Where the reviews come from

Hover a country · click to read its reviewsFewerMore

Reviews by country

More reviews · 62

  • 2 years ago

    amazing developer !!! made sure everything was done exactly how i needed it and was quick and efficient with communication and delivery times !!! i had given him more requirements and revisions multiple times, not once did he complain or get mad, just simply made sure that i was accurate with the requirement so he can make it quickly !!! 10000% recommend him for anyone and everyone !! literally couldnt ask for anyone better in anyway will 100% be coming back to him again !!! thank you very much !!!!

    sxa_07FiverrGB
  • 1 year ago

    I very thankful with Rehan. He delivered all as expected and right on time. Communication is very good and the output he delivered has no problem at all. I highly recommended his service and i am pretty sure to buy from him again. Thank you and god bless.

    harroldvanFiverrPH
  • 11 months ago

    Excellent work. Really makes an effort to deliver outstanding websites that comply to all your wishes. Rehan is the peak of customer service. 10/10 experience and would come back again in a heartbeat.

    arnaiseFiverrBE
  • 1 year ago

    The website satisfied all of my requirements, and any changes i requested were implemented promptly. Along with the construction, i was given a lot of explanations of various ideas to make the process go smoothly. Very pleased and will place another order for next projects.

    jodtra3FiverrGB
  • 10 months ago

    Consistently impressed with the quality of work! Every time I work with Rehan, the project is delivered on time and with exceptional attention to detail. The AI integration is always flawless.

    paulstank347FiverrFI
  • 1 year ago

    rehan did a very good job and the result not only met my requirements but even exceeded them. he thinks along and gives helpful suggestions. Communication with him was pleasant and very professional. I will definitely work with him again. Highly recommended.

    hannes673FiverrDE

03The proof

Receipts, not adjectives.

If a number can’t be checked, it isn’t here. Private client work is marked as private, and I’m happy to walk you through it.

claims on file
12claims on file
link to the source
8link to the source
private, shown on request
4private, shown on request
adjectives
0adjectives
Audited 29 Oct 2026
  • No. 001Freelance

    80+

    five-star reviews

    From 100+ completed Fiverr orders. Level 2 seller. One client came back for a fifth project.

    Sourcefiverr.com/rehan_sathio(opens in a new tab)
  • No. 002Research

    27.45%

    Recall@10, measured

    On my own 51-query benchmark for Sindhi poetry retrieval. Modest, real and reproducible.

    SourceThe benchmark
  • No. 003Engineering

    38+

    API endpoints in production

    Commodity exchange: matching engine, WebSockets, Stripe + Binance/TRC20, CI/CD to a VPS.

    Source Private client code
  • No. 004Product

    118

    students on my LMS app

    Across 5 Bahria University campuses, with no institutional backing. 24.58% monthly active, from my own analytics.

    Sourcebahrialms.vercel.app(opens in a new tab)
  • No. 005Research

    52.31%

    graph edges pruned

    Co-authored trajectory-prediction paper, submitted and under review. minADE5 0.3863 m on nuScenes.

    SourceThe paper
  • No. 006Research

    97

    papers mapped

    Three literature syntheses (31, 33 and 33 works) across document AI, few-shot AR and agent reliability.

    SourceThe syntheses
  • No. 007Engineering

    8/8

    invoices extracted

    Hybrid OCR + LLM pipeline, 100% success on its production pilot.

    SourceCase study
  • No. 008Engineering

    5.5M+

    rate-limit checks / sec

    Hitlimit on Bun (4M+ on Node.js), 10K-key benchmark. My open-source rate limiter.

    SourceCase study
  • No. 009Academic

    Ignite

    grant for ChatDoc

    My final-year project, an NLP + face recognition doctor's assistant, was funded and showcased.

    SourceCase study
  • No. 010Academic

    3.65

    MS AI CGPA

    Bahria University Karachi, as of Spring 2026. 3.62 in my BSCS, with the President’s Honor Roll in Spring 2020.

    SourceDetails on request
  • No. 011Academic

    75%

    merit scholarship

    BSCS at Mohammad Ali Jinnah University, 2019–2023.

    SourceDetails on request
  • No. 012Community

    President

    MAJULancers, MAJU

    Also Web Dev Lead at the Google Developer Student Club, MAJU (2022–23). Seminars, competitions and freelancing awareness sessions.

    SourceDetails on request

04Capabilities

Four things, one person.

Engineers who can’t do research, researchers who can’t ship. I’m trying hard to be neither.

  1. 01

    AI Engineering

    Retrieval, extraction and LLM systems that hold up outside a notebook.

    • RAG
    • LangChain · LangGraph
    • Vector DBs (FAISS, Chroma, pgvector, Pinecone)
    • LLM APIs (Gemini, Claude, OpenAI)
    • Local models (Ollama, HF Transformers)
    • Document AI & OCR
    • On-device embeddings
    • LLM fine-tuning
    • Retrieval evaluation

    Proof → Ask Bhittai · Invoice Intelligence · AIPhotos

  2. 02

    Full-Stack & Mobile

    From the database schema to the last pixel, on web and phone, on stacks clients actually run.

    • Next.js · React
    • Node.js · Bun
    • FastAPI · Django
    • Flutter (Clean Architecture, BLoC, Riverpod)
    • WebSockets
    • Supabase · Firebase
    • PostgreSQL · MongoDB · SQLite

    Proof → 100+ Fiverr orders · Commodity exchange · 14+ Flutter apps

  3. 03

    Research

    Asking whether it works and proving it with numbers.

    • Literature synthesis
    • Benchmark design
    • Retrieval & trajectory evaluation
    • Imbalanced learning (SMOTE)
    • Metaheuristic optimization
    • Neuro-symbolic ML
    • Technical writing

    Proof → 1 paper under review · 97 papers mapped · 51-query benchmark

  4. 04

    Automation & DevOps

    I hate repetition, so I automate it: workflows, deploys, generators, bots and the boring parts.

    • n8n · Make · Zapier
    • Playwright · Selenium · Puppeteer
    • GitHub Actions CI/CD
    • VPS setup (DigitalOcean)
    • Docker
    • Vercel
    • Cron automation
    • Code generators

    Proof → Invoice approval workflow · trading bots on cron · own dev tools

05Research

Research, measured.

A co-authored paper under review, benchmarks, experiments and literature work from my MS in Artificial Intelligence. Every claim comes with a number or a source.

All research

06From the build log

What I’m shipping, on camera.

Face + code. No fancy gear: a phone, CapCut and OBS. The work, in public, while it happens.

Instagram · build in public

@rehan.git

Watch the reels
  1. 01Projects, while they’re built
  2. 02Experiments from the lab
  3. 03Research, in plain words
  4. 04Whatever ships next

07Status board

Now.

Third semester of the MS, laptop open, shipping in public.

Last updated

  1. Speaking

    On-device AI at AI Tinkerers Karachi

    Demoing my on-device AI work at the AI Tinkerers Karachi demo meetup on Saturday, October 31: models that run on the phone itself, with nothing sent to a server.

    The meetup(opens in a new tab)

  2. Researching

    My thesis: knowing when the object is not there

    Phones that help blind and low-vision users find their own objects always name something, even in an empty frame. My pilot on ORBIT-India: thresholds meant to catch 90% of appearances caught 62% at best. I’m building a conformal calibration method that tells the user “it’s not here” at a tested level of reliability, on a mid-range Android.

    The thesisSince Sep 2026

  3. Learning

    Deep Learning & Optimization

    My favourite course so far. The part that clicks is the math: how weights actually move and why a model works, not just which API to call.

    Since Fall 2026

  4. Building

    AIPhotos

    An iOS-style Android gallery with EmbeddingGemma running fully on-device: natural-language search across photos, recordings and video moments. I use it daily; the Play Store is next.

    Case study

  5. Learning

    AWS Certified ML Engineer, Associate

    Preparing for the MLA-C02 exam, to back the deployment side of my AI work with a real credential.

  6. Shipping

    Build reels on @rehan.git

    Short reels around the projects I build, posted while they happen.

    Watch the reels

  7. Available

    Open to work, right now

    Full-time AI / full-stack / backend roles, remote or on-site in Karachi. Freelance projects too.

    Get in touch

08Live

From the workbench, as it happens.

GitHub contributions, year by year, and everything that’s live right now. Open any of it and try it.

Live · GitHub
Contributions on GitHub@MuhammadRehanRasool ↗
  • 28 dayslongest in 2026
  • yesterdaylast commit

484 contributions in 2026

JanFebMarAprMayJunJulAugSepOctNovDec
MonWedFri

Deployed · open one and try it

09 · Contact

Let’s build something worth showing.

muhammadrehanrasool@gmail.com