HK

Herbert Kanengoni

Available to hire

uk, a production financial planning SaaS platform. js/Passport authentication, React/TypeScript frontend, MongoDB for application data, and a local SQL database for postcode lookups.

About

I’m Herbert Kanengoni, a full-stack engineer who built Kumberi.co.uk, a production financial planning SaaS platform. I own the full stack: FastAPI/Python backend, Node.js/Passport authentication, React/TypeScript frontend, MongoDB for application data, and a local SQL database for postcode lookups. I deployed on Render with CI/CD automation and integrated Stripe for subscription billing and lifecycle management. I also built geospatial data pipelines to convert public datasets into JSON-optimised lookups and delivered features that rely on postcode-to-area mapping.

With seven years translating complex business requirements into scalable solutions across regulated sectors, I designed a hybrid database strategy to reduce lookup latency, implemented production-grade authentication and payments, and delivered a responsive UX for multi-scenario financial planning. I thrive on solving tough problems solo and collaborating with stakeholders to ship enterprise-ready features on a tight timeline.

  • 3 years' experience
  • Joined November 2025

Languages

  • EnglishFluent

Industry experience

  • Financial Services
  • Real Estate & Construction
  • Professional Services
  • Software & Internet
  • Other

Work experience· 4 roles

Founder / Product Engineer · Kumberi.co.ukJan 2024 – Nov 2025 · 1 yr 11 mos

Founded and built Kumberi.co.uk solo, delivering a production-ready financial planning SaaS. Owned the full stack: FastAPI/Python backend, Node.js/Passport authentication, React/TypeScript frontend, MongoDB for application data, and a local SQL store for postcode lookups. Implemented CI/CD pipelines and deployed on Render with monitoring. Integrated Stripe for subscription billing and lifecycle management. Built a custom ETL pipeline to ingest Land Registry and ONS datasets into JSON-optimised lookup tables and designed an MSOA-level house price intelligence system with geospatial postcode mapping. Architected a hybrid database strategy to reduce lookup latency by ~70% and achieve sub-100ms API responses for location-aware features. Ensured production readiness with logging, auditing, backups, and security controls. Maintained 99% uptime while shipping features on a solo-founder timeline.

Sales Coordinator · Onward HomesApr 2022 – Apr 2022 · 1 mo

Managed a portfolio of 30+ property sales across multiple concurrent projects, coordinating legal, construction, and finance systems. Produced performance reports tracking KPIs, sales progress, and revenue outcomes using Excel-based dashboards. Demonstrated ability to juggle multiple interconnected workflows and implement improvements.

Sales Coordinator · PluLife Move (Great Places)Apr 2022 – Nov 2025 · 3 yrs 8 mos

Identified workflow inefficiencies in property disposal processes and built analytical tools using advanced Excel, improving reporting accuracy by 15%. Conducted detailed financial appraisals using SDS Proval and built complex Excel models for property valuation and forecasting. Demonstrated systematic problem-solving by translating business requirements into analytical solutions and delivering improvements across teams.

Finance Assistant · Onward HomesJun 2019 – Jun 2019 · 1 mo

Education

Self-taught Full-Stack Developer · Self-taught2024 – 2025
APM Project Fundamentals Qualification · APM2022
Applied Science (Grade EE) · Manchester College2006 – 2008
GCSEs · Abraham Moss High School2005 – 2006

Certifications and awards

APM Project Fundamentals Qualification2022

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