Sayed Hamid Fatimi
Independent full-stack developer building products, developer tools, and long-form writing — mostly across the Valeon ecosystem.
London, UKAbout
I'm an independent software developer based in London. I design and run products end to end — the frontend, the backend, and the infrastructure that ties them together — across the Valeon ecosystem along with a handful of trading and developer tools. My background is in physics, and I'm drawn to work where engineering meets markets, language, and systems. I'm open to frontend, full-stack, and systems roles.
Work Experience
Self Employed
2018 — 2024Freelance Software Developer & Financial Market Analyst
RemoteIndependently developed open-source and client projects using React, Next.js, TypeScript, and Electron.js. Built and maintained multiple full-stack applications and trading tools. Automated financial market analysis workflows with JavaScript and Python, integrating technical and fundamental analysis for cryptocurrency markets.
Uber / Bolt / Deliveroo / Amazon Flex
2019 — 2023Self-Employed Driver & Courier
DriverProvided professional taxi and delivery services across multiple platforms. Developed logistical expertise, time management skills, and customer service capabilities while operating in high-demand environments.
Sitel
2020 — 2020Customer Service Agent
RemoteServed as a Track and Trace telephone agent during the COVID-19 pandemic, assisting in public health initiatives by coordinating testing services and providing critical information to callers.
Tesco
2017 — 2017Customer Service Assistant
WatfordSupported frontline retail operations, assisting customers, handling inquiries, and maintaining efficient store operations during peak service periods.
eLeREP
2015 — 2017Supervising Technician
HarrowDesigned and implemented a device tracking system for repair services. Developed BIOS/EFI programming solutions, data recovery workflows, and automated diagnostic tools. Managed inventory systems, optimized eCommerce operations, and handled customer support initiatives.
BarnDoc Healthcare
2014 — 2015RMS Administrator
CockfostersManaged sensitive patient data entry and database administration within the RMS system. Facilitated confidential correspondence with patients, GPs, and hospitals, ensuring strict compliance with data protection regulations. Supported coordination of appointments and healthcare referrals through effective communication and administrative precision.
Final Tuition Centre
2013 — 2014Mathematics Tutor
EnfieldDelivered personalized mathematics tutoring to students from primary to secondary levels. Simplified complex concepts, designed custom lesson plans, and improved students' problem-solving and exam techniques through targeted feedback and continuous progress monitoring.
KiioLabs
2012 — 2013Web Development Intern
HendonContributed to the development of backend features for web applications using PHP, MySQL, and JavaScript. Implemented user authentication, interactive UI components, and collaborated with the development team to deliver widely used software tools.
Megamobiles
2010 — 2011Repair Technician
HarrowDiagnosed and repaired a range of electronic devices including laptops, tablets, monitors, and mobile phones. Specialized in component-level diagnostics and repair workflows. Managed inventory, sourced repair parts, and maintained direct customer consultations to deliver high-quality service.
Education
Queen Mary, University of London
2011 — 2014BSc Physics
Projects
Independent publication—rebranded to Valeon—exploring philosophy, markets, science, and technology through long-form essays and structured series (e.g., Physics for Beginners, Understanding Market Mechanics, Beyond Kings & Thrones). Built the platform end to end: a Next.js blog, a Clerk-gated author dashboard, and a Convex backend, with automated text-to-speech to MP3 (OpenAI) stored on Cloudflare R2 and a podcast RSS syndicated to Spotify/Apple/YouTube. Focus: rigorous ideas, clear language, and reader-first performance.
Orchestration platform for deploying algorithmic trading bots with configurable, composable strategies. Built from the foundation up with no external trading libraries — every layer purpose-built for precision and transparency. Features a strategy engine with 48 composable components, 5 exit guard types, full parameter control, a backtesting suite for pre-deployment validation, and per-trade analytics with signal breakdowns and MFE/MAE tracking. Dedicated compute per instance, no shared execution environments. Usage-based billing, with 10 exchanges live — BitMEX, Bybit, Binance, Kraken, OKX, KuCoin, Deribit, Gemini, Phemex, and WooX — and Gate.io, Bitget, and HTX to follow.
gramatic
Pay-as-you-go AI image generation — no subscriptions.
VocaSync
Text-to-speech, forced alignment & transcription platform.
OEMI
Community encyclopedia of mathematical identities.
object0
Cross-platform desktop S3 bucket manager.
GigFin
Self-hosted, privacy-first ledger for gig workers.
Valeon TTS Studio
Local-first studio for long-form narration.
WhisperX Studio
Replicate-powered WhisperX transcription cockpit.
wavegram
Audio ↔ spectrogram-PNG codec, fully client-side.
Get in touch
Open to frontend, full-stack, and systems roles. The fastest way to reach me is email — keys below for anything sensitive.
PGP public key — Personal Email
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PGP public key — Work Email
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