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I’m Mooktakim, a software engineer and startup founder based in London, with deep expertise in Ruby on Rails and full-stack product engineering. Over the last 19+ years, I’ve built and scaled digital products from first commit to thousands of users, leading everything from architecture and API design to deployment and operational reliability.…

Mooktakim Ahmed

Fractional CTO, Fractional CMO, Web Developer, +2

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I’m Mooktakim, a software engineer and startup founder based in London, with deep expertise in Ruby on Rails and full-stack product engineering. Over the last 19+ years, I’ve built and scaled digital products from first commit to thousands of users, leading everything from architecture and API design to deployment and operational reliability.…

Available to hire

I’m Mooktakim, a software engineer and startup founder based in London, with deep expertise in Ruby on Rails and full-stack product engineering. Over the last 19+ years, I’ve built and scaled digital products from first commit to thousands of users, leading everything from architecture and API design to deployment and operational reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Bengali

Advanced

Work Experience

Co-Founder & CTO at Rentjoy

January 1, 2022 - January 1, 2024

FCA-regulated platform automating rental payments for letting agents, contributing to product strategy, engineering leadership, and delivery of payments automation capabilities designed for regulated requirements.

Senior Ruby Developer (Contract) at Department for Education

February 1, 2021 - May 1, 2026

Delivered public-facing digital services across multiple DfE teams under a multi-year contract. Advised early-stage startups on technical strategy, architecture, scaling, hiring, engineering leadership, and team management. Designed, built, and shipped SaaS-style products including an AI restaurant website builder (Rails/Gemini/AI agents) and an Android EV charger home-screen widget using Kotlin and the Glance API. Built AI/CV formatting recruitment SaaS turning raw CVs into branded documents quickly, and implemented front-end components for the GOV.UK Design System with accessibility and usability standards. Owned DevOps and deployment workflows across AWS, Azure, and Heroku using Terraform.

Founder & CTO (Consultant) at FluxtER

February 1, 2021 - Present

Fractional CTO consulting and delivery focused on building SaaS products end-to-end. Hands-on engineering across backend and product features, with strong emphasis on delivery, scaling, and pragmatic architecture. Works with modern AI/LLM integrations and production deployments to bring ideas to usable software quickly.

Co-Founder & CTO at Home Hero (formerly Homeshift)

January 1, 2013 - January 1, 2021

Venture-backed PropTech startup providing a unified dashboard to manage homes and related services. Led technical direction and built capabilities for managing home operations in a product-focused SaaS environment.

Ruby on Rails Developer (Contract) at Switch for Business

January 1, 2012 - January 1, 2013

Worked on price comparison and product-related services for UK businesses, supporting Rails development for business-facing offerings.

Ruby on Rails Contract at Forward Internet Group

January 1, 2011 - January 1, 2013

Built and maintained Rails applications for product price comparisons and business-facing functionality.

Built Open Banking / PSD2 Payments Engineer (Yapily) and Engineering Lead at Yapily

January 1, 2005 - January 1, 2011

Built Open Banking/PSD2 payment flows collecting rent into safeguarded, segregated client-money accounts. Delivered automated reconciliation and payouts, reducing manual rent-handling for agents. Co-founded and led engineering through the seed stage, growing to ~55 employees and leading a 12-person engineering team. Built partnerships with 6,000+ estate agents and top tenant referencing agents in the UK. Launched a multi-utility offering and founded Colorado Energy, an Ofgem-regulated energy supplier, including an in-house billing platform and automation for 20,000+ energy customers. Also built and maintained Rails applications for Switch for Business and Business Juice. Continued Rails contract work including leadership at the GSM Association and Rails roles for Bauer Media, Shoobs, Preloaded, and system roles across multiple companies (including Laverock von Schoultz, Clarinet, Customer Systems, Eli Lilly, and Sun Microsystems).