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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.…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.

Herbert Kanengoni

Full Stack Developer, Web Developer, Front-End Developer, +2

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Founder / Product Engineer at Kumberi.co.uk

January 1, 2024 - November 25, 2025

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 at PluLife Move (Great Places)

April 1, 2022 - November 25, 2025

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.

Sales Coordinator at Onward Homes

April 1, 2022 - April 1, 2022

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.

Finance Assistant at Onward Homes

June 1, 2019 - June 1, 2019

Maintained rent accounting systems, reconciliations, and audit processes. Worked across departments to streamline data flows and improve process accuracy. Experience with financial systems, attention to detail, and cross-functional collaboration.