# What we do > Strategic thinking, production AI experience, and genuine ownership — at every stage. Every business idea is different, so we build customised solutions tailored to your needs and requirements. We rely on a cross-functional approach to give your business a strong core, always considering the strategic context of your digital product. We are a locally built company delivering internationally, working with a complex worldwide client portfolio across many industries. Increasingly that includes AI: from advising where it fits your product to shipping RAG systems into production. ## AI Solutions We build AI systems that ship to production — and integrate AI into the systems you already run. From RAG-based answer engines with cited, grounded responses to semantic search, embeddings pipelines and LLM-powered automation. Built with the discipline AI demands: grounded generation, fail-soft fallbacks, and cost control. - AI strategy and feasibility - LLM application development - RAG and grounded answer engines - Semantic and vector search - AI integration into existing systems - Embeddings and content pipelines - AI evaluation, safety and cost control Detail: https://devnest.ro/ai ## Consultancy From ideation to long-term maintenance, we help you turn your ideas into reality so that you can focus on what matters — growing your business. We do that by leveraging emerging technologies, including advising where AI fits your product and where it does not, and by streamlining the development process. - Strategic planning - Business analysis - Project architecture - Research - Wireframing - User and business flows - UI design - Prototyping - User testing ## Software Engineering Custom products and systems built to your requirements. Our developers cover any industry, niche or user type — and pair technical depth with genuine business understanding. We build with AI-assisted workflows every day: faster delivery, same bar. - Built from scratch — products and systems matched to your specifications - Mobile app development for iOS and Android - Efficient and scalable solutions using modern technologies and best practices This is the line most greenfield work sits in. A new product typically runs through business analysis and architecture, then design, then incremental build with QA and DevOps alongside — so there is working software at each stage rather than a reveal at the end. ## DevOps Comprehensive DevOps solutions that ensure end-to-end pipeline delivery for cloud platforms, enabling faster time to market. We automate critical business processes so your specialists can focus on application delivery, deployment and maintainability. ## Software Testing Functional, reliable and secure products. Our QA engineers embed quality into every stage of the delivery cycle — from unit tests through integration to full end-to-end coverage — including evaluation of LLM-backed features, where correctness is probabilistic. ## How we work — engagement models We are eclectic when it comes to engagement models. They are highly relevant to match the current needs of the IT market and to make sure our clients are fully engaged in the project. **Cross-functional teams.** We cover every aspect of development from start to finish. The team owns the direction of the product while working with you to achieve the desired outcome — strategy, UX/UI, web and mobile development, testing, and ongoing support. **Augmented projects.** Our developers join your team and work toward a shared goal. Either side can manage the mixed team. This works well for small and large endeavours where multiple teams collaborate on the same project. **Custom.** We have a conversation and figure out what works best for you. ## Why DevNest - **Strategic Thinkers** — strategic thinking, vision and innovation are at the core of everything we deliver. We look beyond the immediate brief to understand the bigger picture. - **Ownership** — we encourage creativity, an innovative approach, and an empowered team culture. When we take on a project, we treat it as if it were our own. - **AI-fluent** — remarkable projects need remarkable engineers. Ours build with AI daily and have shipped production AI systems. ## Technology stack **AI & Data:** OpenAI and Anthropic APIs, RAG pipelines, Elasticsearch vector search (kNN), embeddings and semantic matching, Whisper speech-to-text, Python AI workers. **Languages:** JavaScript / TypeScript, PHP, Perl, Java, Python, Ruby. **Mobile:** iOS, Android, React Native. **DevOps:** AWS, Docker, Kubernetes, CI/CD pipelines. **Testing:** unit, integration, end-to-end (Cypress, Playwright). The stack is deliberately eclectic because the right tool differs per product. React and modern TypeScript on the front end; Node, Perl and PHP on the back end; MySQL, AWS and Redis for data and infrastructure. ## Industries we serve E-commerce, finance, education, email marketing, resource management, domain registries. > "Our overall experience with DevNest has been pleasing, their technical skills are top-notch and their understanding of our business and needs has always been excellent. They get things done and we love working with them." — Chris Poel, Head of Delivery, River Island ## Frequently asked questions **What does DevNest do?** DevNest is a Romanian software company that builds tailored web, mobile and AI solutions for international clients. We cover AI solutions, consultancy, full-cycle software engineering, DevOps and QA testing across fintech, e-commerce, education, HR technology and more. **Do you build AI solutions?** Yes — we design and ship production AI systems, not prototypes. We built Business111.com, an AI answer engine for UK businesses combining retrieval-augmented generation with cited sources, semantic vector search and a fully owned AI content pipeline. We cover the full arc: AI strategy, LLM application development, embeddings and vector search, and evaluation. **Can you integrate AI into our existing systems?** Yes — and no rewrite is required. We add AI capabilities to the systems you already run: LLM-powered features, semantic search over your own content, and automation pipelines, engineered the way production AI demands. **What engagement models does DevNest offer?** Cross-functional teams that own the full product direction, augmented projects where our engineers join your existing team, or a custom arrangement shaped after a short conversation. **Which industries does DevNest work in?** Fintech, e-commerce, fashion retail, education, HR technology, email marketing and domain registries — including iPost, CV-Library, River Island and CentralNic. **Where is DevNest based?** Founded in Cluj-Napoca, Romania in 2019, with additional offices in Flower Mound, Texas and Stockholm, Sweden. **What technologies does DevNest use?** React with modern JavaScript and TypeScript on the front end; Node, Perl and PHP on the back end; MySQL, AWS and Redis for data and infrastructure; and full CI/CD DevOps pipelines. **How do I start a project with DevNest?** Tell us about your project through https://devnest.ro/contact or email hello@devnest.ro. We respond within one business day. There is no cost to start the conversation.