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Hi, I'm Tosin Peter

Mobile Engineer. Software Developer, Framer Developer, AI Software Developer, App Completer, Vibe Coder, LLM Engineer, AI Agent Builder, Full-Stack AI Developer, Prompt Engineer, RAG Architect, AI Product Engineer, Automation Engineer.

Crafting exceptional web and mobile app experiences products that feel fast, look sharp, and actually ship.

Tosin Peter, Mobile Engineer in Lagos, Nigeria
React Native logoReact Native
Expo logoExpo
Flutter logoFlutter
Rork AI logoRork AI
Lovable logoLovable
Base44 logoBase44
AppsFlyer logoAppsFlyer
Firebase logoFirebase
Supabase logoSupabase
OpenAI logoOpenAI
TypeScript logoTypeScript
Figma logoFigma
Framer logoFramer
Swift logoSwift
Sentry logoSentry

What I do

I ship mobile, web, and AI products — and finish the ones that got stuck.

0150+ shipped

Mobile apps

iOS and Android with Flutter, FlutterFlow, and Expo — founder MVPs through production apps, then onto the App Store and Google Play.

Flutter · Expo · FlutterFlow · App Store

02

Web & design

Conversion-focused Framer sites and Figma-to-build UI. Landing pages and product sites that actually ship.

Framer · Figma · TypeScript

03

AI & rescue

LLM features, agents, and RAG in real apps — plus finishing Lovable, Replit, Bolt, Cursor, and Rork prototypes.

OpenAI · Lovable · Replit · Cursor

Who I am

About

I'm a mobile engineer based in Lagos, Nigeria. I build iOS and Android apps with Flutter, FlutterFlow, and Expo — and conversion-focused websites in Framer.

Over the years I've shipped 50+ mobile products, from MVPs for founders to production apps with auth, backends, and store deployment. I also rescue messy AI-generated prototypes from Lovable, Replit, Bolt, and Cursor and turn them into apps people can actually use.

If you have a half-finished idea, a broken vibe-coded build, or a product that needs to land on the App Store — that's the work I take on.

What we sell

Services

After launch

Client results

Marec Braun’s habit-change app went live — then the numbers followed. Production performance over the last 180 days. Watch hisvideo testimonial.

In the room

Clients I've worked with

Real calls with founders and teams — not stock photos. These are working sessions from shipped and in-progress products.

  • Video call with Mohammed Alamidi about Product session

    Mohammed Alamidi

    Product session

    On a call
  • Video call with KZ Tan about MindQuest OS

    KZ Tan

    MindQuest OS

    On a call
  • Video call with Sander Heggestad about Applify Lab

    Sander Heggestad

    Applify Lab

    On a call
  • Video call with Tim about Build review

    Tim

    Build review

    On a call
  • Video call with Jonas Keller about AMZ Visuals

    Jonas Keller

    AMZ Visuals

    On a call
  • Video call with Oleksii Borok about GigRadar

    Oleksii Borok

    GigRadar

    On a call
  • Video call with Sam Lawrence about Product call

    Sam Lawrence

    Product call

    On a call
  • Video call with Mustard Seed about Launch planning

    Mustard Seed

    Launch planning

    On a call
  • Video call with Cash Spencer about Austin Riddle Co.

    Cash Spencer

    Austin Riddle Co.

    On a call
  • Video call with Sasha Mrejen about Working session

    Sasha Mrejen

    Working session

    On a call
  • Video call with Edres Al Ali about Gloord App

    Edres Al Ali

    Gloord App

    On a call
  • Video call with Telo Santos about Product call

    Telo Santos

    Product call

    On a call
  • Video call with Ashim Aryal about Client session

    Ashim Aryal

    Client session

    On a call
  • Video call with Karl Kronenberger about Rork Lacrosse

    Karl Kronenberger

    Rork Lacrosse

    On a call

Social proof

Recommendations

21 client reviews from Upwork, Fiverr, and Contra — plus a video from Marec Braun, founder ofQuitli. More on my Upwork and Fiverr profiles.

Marec Braun

Founder, Quitli

Live results
  • “Tosin is really great to work with — professional, patient, and super easy-going. Even with unexpected issues, he stayed reliable, clear, and focused until the end. The work is clean and he makes the whole process smooth. Honestly, one of the best experiences I’ve had on Upwork — the goat, no doubt.”

    AI Chatbot AppUpwork
  • “Tosin worked diligently and met all deadlines. When asked to expedite the process he gladly made it work and did whatever was asked of him!”

    Expo / Rork PublishUpwork
  • “We needed some adjustments and Tosin got it done same day as fast as I needed him to do it”

    Updates for AppUpwork
  • “Tosin is great to work with. Quick and communicative, but most of all he's bright and able to solve problems much faster than I would have been able to.”

    Replit Real EstateUpwork
  • “amazing work, quick and efficient. I will be using Tosin again in the future”

    Replit MVP DeployUpwork
  • “Thanks for the help. Did a good job in only 1 hour”

    UI + Supabase FixUpwork
  • “Peter is talented solving errors on what it cannot be fixed on Bolt New. He is a brilliant guy super talendted! 100 percent recommended”

    Bolt + PaymentsUpwork
  • “A+++++ Peter is talented for what his doing. Very kind and helpful. I 100 percent recoomend.”

    Error FixUpwork
  • “very pleasant programmer, everything was implemented as discussed, it was a lot of fun working with him! Excellent performance!”

    ehrlich_kickerFiverr
  • “tosinpeter1 did what I asked for and was very helpful when I asked him to modifying the product before delivery. Very good experienced, suggested!”

    luca_didomenicoFiverr
  • “best custom project maker will definitely work with him again”

    niucristianFiverr
  • “Fantastic work! You can see the website on easymoon.io. Reason for being on overtime was because of me.”

    tobias_ethFiverr
  • “Good seller, patient and starting the next work with him again”

    amalthomas99Fiverr
  • “All recommendations !! Broz finished the job and as much as he demanded that I give him, he did everything without discussion!”

    animesellingFiverr
  • “Very responsive seller. Very fast changes. Perfect design for our business model.”

    indegoimportsFiverr
  • “Super quick work and easy to work with.”

    eivindhelgerodFiverr
  • “So glad we got to work together on this, he went above and beyond and really helped take my website to a higher level of detail and professionalism. Thank you.”

    jacksontjtateFiverr
  • “I had excellent experience working with Tosin on a framer website redesign, He was quick to respond and managed every request with professionalism. And i will keep using him again, Thanks Tosin!”

    alexanderrazFiverr
  • “Tosin Peter did an amazing job with my Framer website redesign. Clean, modern, and delivered right on time. Highly recommend!”

    ademola_smsFiverr
  • “Awesome work! The Framer site looks clean, modern, and exactly how I wanted. Fast, professional, and highly recommended!”

    april_mayerFiverr
  • “Tosin was professional, responsive, and consistently on time, communication was excellent throughout, which made the project easy to manage. The one area that occasionally slowed things down was translating the creative and aesthetic direction I was going for; a bit more back-and-forth was needed there than I expected. Reliable to work with overall, and I'd recommend him for projects with a clear creative brief already in place.”

    Joe McLeanContra

Let's talk

Contact

Have a question or a project in mind? Feel free to reach out.

Location:Lagos, Nigeria