# Our work

> A local-built company, delivering internationally — across diverse industries and complex domains.

Case studies below are summarised; each has a full page, and appending `.md` works for the Business111 study.

## Business111.com — an AI answer engine built on RAG

AI / Business Information Services. A conversational AI platform giving UK businesses grounded, cited answers — built on retrieval-augmented generation, semantic vector search and a fully owned AI content pipeline. DevNest built the entire platform: four applications and a Python worker fleet in one TypeScript monorepo, roughly 55 backend feature modules. Next.js 15, React 19, NestJS, Prisma, Elasticsearch 8, MySQL, Redis, OpenAI, Whisper, Python.
Full study: https://devnest.ro/our-work/business111

## iPost — an email platform sending 25 million emails a day

Fintech / Marketing Automation. A comprehensive email service provider platform supporting personalised campaigns across Retail, Hospitality, Travel, Food & Beverage, Franchise and Gaming: campaign creation, advanced segmentation, A/B testing, dynamic content personalisation, automated workflows, and analytics — at 25 million emails per day during peak times. Perl (Mojolicious), MySQL, AWS ElasticBeanstalk, RDS, SQS, ElastiCache (Redis), Lambda, API Gateway, Redshift. DevNest engineers have been core contributors since the platform's early days.
Full study: https://devnest.ro/our-work/ipost

## CV-Library — scaling the UK's largest independent job board

HR Technology. Over 19 million active CVs. DevNest provided embedded engineering teams to stabilise, optimise and scale the core applications, identify bottlenecks and improve release processes — work that directly contributed to boosting monthly sales performance through better system reliability and throughput.
Full study: https://devnest.ro/our-work/cv-library

## River Island — a scalable e-commerce checkout

Fashion / E-commerce. A new checkout system built for scalability and improved UX across 350+ international stores, improving conversion and giving the River Island engineering team a more maintainable platform, with better performance under peak load.
Full study: https://devnest.ro/our-work/river-island

## CentralNic — domain registry integrations

Domain Registration / Fintech. Complete integrations with top-level domain registries, enabling CentralNic to expand its portfolio and give registry partners the tools to operate effectively — across multiple TLDs, navigating registry protocol and compliance complexity.
Full study: https://devnest.ro/our-work/centralnic

## Summerwood Products — a 3D product configurator

E-commerce / Product Design. A 3D rendering system integrated into the website, letting customers experience and custom-design architecturally styled garden sheds, studios, cabanas, garages, gazebos, playhouses and cabins in real time. Perl (Catalyst, DBIx Class, Moose), PHP (Magento), JavaScript and React, webpack, SCSS.
Full study: https://devnest.ro/our-work/summerwood

## Other clients

Metro Digital, Accenture, EdClub, Fitch Ratings, Macropay, MHP, Script Sender, Key-Systems.

> "All Key-Systems developers that worked closely with DevNest team were amazed on how fast they learn and understand our tools and processes. Because DevNest team managed to deliver on time their previous tickets/milestones, we can hand over tickets (and/or parts of the system) without worrying if they would be able to deliver. We also appreciate their ability to ramp-up a team in a timely fashioned manner. At management level we always found fairness and a get things done attitude." — Oliver Fries, CEO, Key-Systems