Discover JavaScript developers and agencies

We help growing companies build scalable operational platforms, business systems, and AI-enabled workflows for integration-heavy and operationally complex environments. What sets Celadonsoft apart is our clarity before development: we start with discovery, solution design, and business analysis to define architecture, workflows, integrations, priorities, and the right development scope before build begins. This foundation allows us to deliver predictably for complex systems by combining product management, QA, solution design, and senior engineering, keeping complex software projects transparent, structured, and predictable from discovery to release. We are built for real business complexity and work best with growing and established companies that need operational platforms, multi-role systems, complex integrations, internal workflows, and software that supports long-term growth and operational scale. At the same time, our senior engineers use AI to accelerate delivery and reduce repetitive work while keeping architecture, technical decisions, scalability, and quality under senior engineering control. We primarily work with companies in Food & Beverage, Real Estate, and FinTech, and our strongest experience includes restaurant chains, multi-location businesses, operational platforms, workflow-heavy systems, and customer-facing digital products tied to core business operations.

sunil M

A full-stack developer working with Large Language Models

Building applications that combine traditional web architecture with AI capabilities, integrating model APIs, prompt engineering, and vector search directly into web or mobile products

Senior full-stack engineer focused on .NET/C#, AWS and React, and one third of TrioAmigo, a three-person senior team from Belgrade and East Sarajevo. Recent work: a multi-tenant inspection platform on AWS for a global energy company, a gigapixel image pipeline rewritten from .NET to Python/libvips (16–20× faster in benchmarks), and React and Angular frontends for industrial and banking clients. We take on projects as a team, on fixed-price milestones. Tell us what you're building.

Tanveer Sayyed

Senior Full-Stack Software Engineer | 15 Years Experience | Web & Mobile App Development | .NET | Python | React | Node.js | Cloud & AI Solutions

I am a Senior Full-Stack Software Engineer and Technology Consultant with 15 years of experience in designing, architecting and delivering scalable software solutions, enterprise applications and digital products. I help startups, businesses and enterprises transform their ideas into reliable, secure and scalable technology solutions from initial concept and system architecture to development, deployment and ongoing support. Technical Expertise • Backend Development: C#, .NET Core, ASP.NET Core, Python, FastAPI, Node.js, Express.js • Frontend Development: React.js, Angular, JavaScript, TypeScript, HTML5, CSS3 • Mobile App Development: Android, Kotlin, Cross-Platform Mobile Applications • Database Technologies: PostgreSQL, SQL Server, MySQL, MongoDB • Cloud & DevOps: Microsoft Azure, AWS, Docker, CI/CD, Cloud Architecture • AI & Generative AI: LLMs, RAG, AI Agents, Chatbots, Embeddings, AI Integrations and Automation • Architecture & Engineering: Microservices, REST APIs, Distributed Systems, System Design, Scalable Architecture Services I Offer • Custom Website & Web Application Development • Mobile Application Development • SaaS Product & MVP Development • Enterprise Software Solutions • CRM, ERP & Business Management Systems • API Development & Third-Party Integrations • AI-Powered Applications & Intelligent Automation • Cloud Migration, Deployment & DevOps • Technical Consulting & Software Architecture My Approach I focus on understanding business requirements, choosing the right technology, building maintainable architectures and delivering solutions that can grow with the business. Whether you are a startup looking to build your first MVP or an established business modernising its technology, I can help take your idea from concept to production. Available for international projects, long-term development partnerships and technical consulting.

Senior Full-Stack Software Engineer with 10 years of experience designing and delivering web and mobile applications. Experience spans React, Next.js, Node.js, ASP.NET Core, Laravel, Go, Java, and Python, with work on multi-tenant SaaS platforms, real-time streaming applications, and REST APIs. Brings strengths in UI/UX, problem-solving, database optimization, test-driven development, and cloud deployment.

Ingenuity AI

AI Architect & Full-Stack Developer

Ingenuity AI Pvt. Ltd. is an AI-focused software development company helping businesses transform ideas into intelligent, scalable digital solutions. Founded by experienced engineers with backgrounds at Microsoft and Oracle, we specialize in AI application development, custom AI agents, intelligent chatbots, business process automation, web application development, fintech solutions, and enterprise software integrations. Our team combines technical expertise, innovation, and a business-first approach to deliver solutions that solve real-world challenges. Our Core Services: AI Application & AI Agent Development Custom Chatbots & Conversational AI AI Integration & Business Automation Web Application & SaaS Development Fintech & Enterprise Software Solutions API Development & System Integration Dedicated Software Development & Engineering Support We partner with startups, small businesses, and established organizations to build new products, improve existing systems, and accelerate digital transformation. At Ingenuity AI, we don't just write code — we build technology that helps businesses grow. Website: https://www.ingenuityai.org Email: [email protected]

Elena Pupausis

CEO & Co-Founder | IT Solutions & Technology Partnerships

I am the CEO and Co-Founder of ALMAXIA BioSystems, an international technology company based in Moldova. Together with my partner, Maxim Bukreev, we designed the architecture of an intelligent IT platform for integrating, processing, and analyzing complex data. Our team specializes in end-to-end IT solutions, SaaS platforms, web and mobile applications, business process automation, AI integration, semantic technologies, ontologies, and graph databases. Our expertise also extends to AgriTech, ESG, carbon credits, biomass monitoring, biochar, and environmental data verification systems. I lead the company's strategic development, international partnerships, and negotiations with businesses, investors, financial institutions, and government organizations. We are open to outsourcing projects, long-term technology partnerships, and developing customized IT solutions for companies worldwide. ALMAXIA BioSystems - Turning Complex Ideas into Powerful Technology Solutions.

I'm the Founder of Alphabyte, a software development company helping businesses turn ideas into scalable digital solutions. We specialize in website development, mobile applications, custom CRM and ERP systems, e-commerce platforms, and business automation. Our goal is to help startups and established businesses improve operations, solve problems, and grow through technology. We believe in building practical, reliable, and user-friendly solutions that create real business value. Let's connect and bring your next digital project to life. Alphabyte — Build. Automate. Grow.

Blink22

A bespoke software development company renowned for its exceptional expertise in custom software creation and full-stack software development.

SIVOXI®

South African software engineering firm solving complex business problems.

Andela

A global talent network connecting companies with vetted African software engineers.

Xfive

A web development agency based in Poland, providing front-end and back-end solutions.

The Software House

A Polish software development firm delivering custom solutions for businesses.

Merixstudio

A Polish software development company specializing in web and mobile applications.