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.

JAIKIN is an AI, Odoo and custom software agency for SMEs and mid-sized companies, based near Strasbourg, France. We work across four areas: artificial intelligence (AI agents, generative AI, document assistants), Odoo (implementation, migration, custom modules), custom development (business software, web and mobile apps, configurators) and data (structuring, reporting). From use-case mapping to production, with an ROI-driven approach and data hosted in Europe. Founded 2026.

Bitontree is an AI engineering company founded in 2019 in Ahmedabad, India. We build and run production AI systems for healthcare, logistics, legal, SaaS, e-commerce, recruitment, and real estate teams. Our delivery model is embedded rather than transactional. Senior AI engineers join your sprint cadence, work against your codebase and constraints, and stay involved after launch. That means monitoring live behaviour, maintaining evaluation suites that catch model drift, and tuning prompts and retrieval as real usage patterns emerge. Capabilities include AI agent development, RAG and knowledge systems, AI document processing, AI chatbot development, voice AI agents, AI workflow automation, and MCP server development, alongside AI strategy and proof-of-concept engagements for teams scoping their first system. We support HIPAA-aware delivery with business associate agreements, PHI-safe data pipelines, and SOC 2-aware security practices.

Metatech Official is a mobile app development company specializing in complete digital product solutions for startups, small and medium-sized businesses, entrepreneurs, and established organizations. Since 2018, we have helped businesses transform concepts into reliable, scalable, and intuitive mobile applications aligned with their operational objectives and customer requirements. Our mobile app development services span the complete product journey, including research, planning, UI/UX design, development, testing, deployment, maintenance, and ongoing improvements. Our expertise includes Android and iOS app development, cross-platform solutions, backend development, API integration, database architecture, cloud services, quality assurance, deployment, application optimization, and long-term technical support. Every project is approached according to its individual business and technical requirements rather than through a one-size-fits-all process. Before development begins, we consider factors such as the target market, business model, user journeys, integrations, technical requirements, scalability needs, and long-term product plans. This helps us build applications that address immediate requirements while providing a foundation for future growth. Our team has experience developing applications and digital platforms across numerous industries. These include ecommerce, marketplaces, food delivery, logistics, healthcare, fintech, trading, Web3, transportation, real estate, dating, fitness, education, IoT, augmented reality, hospitality, and other specialized business solutions. For ecommerce and marketplace applications, we develop functionality such as product listings, advanced search, filtering, customer accounts, shopping carts, checkout systems, payment gateways, order processing, vendor panels, inventory integration, push notifications, and administrative dashboards. We focus on creating straightforward shopping experiences while providing businesses with the tools required to manage their operations efficiently. For logistics and delivery businesses, we create interconnected platforms that support customers, merchants, drivers, dispatch teams, and administrators. Features can include live order tracking, dispatch management, shipment status updates, driver management, notifications, routing functionality, and operational dashboards. Connecting these roles within a unified platform helps streamline complex delivery processes. Our healthcare, fitness, and wellness solutions can include appointment booking, telemedicine platforms, patient portals, health and fitness tracking, reminders, progress monitoring, dashboards, and customized workflows. For fintech and trading products, we develop solutions around secure architectures, account management, backend systems, API integrations, structured user journeys, and transaction-oriented functionality according to project specifications. We also develop Web3 and blockchain applications, including cryptocurrency wallets, multi-chain wallets, token platforms, blockchain integrations, smart contract connections, decentralized application interfaces, and supporting backend infrastructure. Our approach is focused on presenting complex blockchain functionality through interfaces that remain understandable and accessible to everyday users. UI/UX plays an important role throughout our development process. Our designers create wireframes, user journeys, navigation structures, responsive interfaces, and consistent visual systems with usability in mind. The goal is to produce applications that look professional while allowing users to complete tasks efficiently across different screen sizes and devices. Our technical teams handle the underlying infrastructure required to operate modern applications, including backend development, APIs, databases, authentication, authorization, role-based permissions, third-party integrations, and administration systems. We emphasize organized and maintainable architecture so products can accommodate additional users, features, integrations, and changing business requirements over time. Quality assurance is incorporated into the development lifecycle rather than treated solely as a final step. Applications are evaluated for functionality, user flows, integrations, device compatibility, responsiveness, and performance before release. Following deployment, we can provide ongoing maintenance, issue resolution, updates, feature development, technical improvements, and performance optimization. Since establishing our services in 2018, Metatech Official has expanded its capabilities across mobile applications, custom software, web technologies, and emerging digital solutions. Our aim is to develop technology that delivers measurable practical value, whether a business wants to improve customer interaction, automate internal processes, introduce a new digital service, or build an entirely new product. Beyond mobile development, we also offer website development, web application development, UI/UX design, SEO, PPC management, and digital marketing services. This enables businesses to combine product development and digital growth initiatives through a single technology partner. Companies seeking experienced app developers can engage Metatech Official for projects ranging from startup MVPs and proof-of-concept applications to large-scale customer platforms and enterprise systems. As a mobile app development agency, we emphasize organized planning, transparent communication, appropriate technology selection, scalable architecture, and consistent execution throughout the development process. Whether the requirement involves custom app development, custom mobile app development, Android applications, iOS applications, backend infrastructure, API integrations, or complete digital product development, our team can assist from the initial concept through deployment and ongoing support. For organizations searching for mobile app development in Pakistan, Metatech Official delivers customized technology solutions based on business goals, user expectations, and long-term expansion plans. Our focus is on creating dependable digital products that are practical to manage, straightforward to use, and prepared to evolve alongside the business.

Damco Solutions is a US-based technology solutions and IT Services company providing customer-centric services in digital, data, and product development. Our deep industry knowledge, ingenious IT services and solutions, proven capabilities in current and emerging technologies, mature development and testing processes- make us a trusted partner of clients worldwide. Strengthened by CMMi and IS0 quality certifications, we facilitate customers to compete in the fast-paced market dynamics and build a sustainable business advantage. In the past few years our top successful projects have featured lift and shift to cloud, platform-led modernization, app refactoring, UI/UX or code modernization, and emerging tech adoption. We have a vast pool of experienced resources available on and offshore, under flexible arrangements- software developers, QA analysts, data engineers, project managers, UI/UX designers, digital marketers, and C-level technology consultants. Contact us to get a ballpark estimate for Web & Application Development, CMS & Ecommerce, Mobile App Development, Data Analytics, Machine Learning, Robotic Process Automation, and Blockchain projects.

Dev Loader, LLC

Dev Loader is a founder-led Laravel studio operated by Dev Loader, LLC, a US-registered company (est. 2021). We help founders and product teams rescue, upgrade, and finish Laravel SaaS applications — and build the React, Node, and mobile front ends around them when the product needs them. What we do: Laravel Application Rescue — Your previous developer disappeared, the codebase is undocumented, and deployment is fragile. We take over the repository, stabilize production, and deliver a written stabilization plan within the first sprint. Laravel Upgrade Service — We upgrade legacy Laravel applications (5.x through 11.x) to Laravel 12/13 and PHP 8.3+, including dependency audits, test-suite repair, and zero-downtime migration plans. Laravel SaaS Development — Narrow, well-scoped SaaS MVPs built on Laravel, Livewire, Filament, and Stripe billing. Audit $299 → rescue sprint $1,000 → feature build $2,500 → SaaS MVP from $6,000. Filament & Livewire Development — Custom admin panels, dashboards, and reactive interfaces on the TALL stack (Tailwind, Alpine, Livewire, Laravel). Performance Optimization — Query profiling, caching strategy, queue tuning, and Core Web Vitals improvements for Laravel applications under load. How we work: Fixed scope, fixed price — Every engagement starts with a written proposal. No surprise hourly invoices. Direct founder-engineer delivery — You work with the senior engineer who builds your project. No account managers, no rotating contractor bench. Full transparency — Repository access from day one, milestone-based delivery, and complete source code ownership at handoff. No hosting lock-in. Who we work best with: Technical founders, small product teams, and agencies running Laravel applications — especially SaaS products that are 80% built and stalled, running outdated Laravel versions, or suffering from performance problems under growth. We deliver remotely worldwide from our registered office in Washington, DC, with replies within one business day.

indibus software

Indibus Software is a leading IT services and software development company delivering innovative digital solutions for businesses worldwide. We specialize in AI development, custom software solutions, web and mobile app development, cloud migration, DevOps, and IT staff augmentation services. With expertise in modern technologies like Flutter, React Native, AI automation, and LLM integration, we help startups and enterprises build scalable, secure, and high-performance digital products that drive business growth and digital transformation.

Sobonix Solutions | AI, SaaS & Custom Software Development Company USA

Sobonix is an AI, SaaS & Custom Software Development Company USA helping startups, SMBs, and enterprises build secure, scalable, and innovative digital solutions. As a trusted custom software development company USA, we specialize in AI application development, SaaS product engineering, custom web and mobile applications, enterprise software, cloud-native solutions, API integrations, and digital transformation. Our team delivers tailored software that improves operational efficiency, accelerates business growth, and creates long-term value. Businesses looking for reliable custom software development companies in USA choose Sobonix for quality, innovation, and customer-focused development.

TechAvidus Pvt Ltd

TechAvidus is a trusted software development company that helps businesses accelerate digital transformation through innovative technology solutions. We specialize in custom software development, web and mobile app development, cloud solutions, AI-powered applications, and enterprise software. With a customer-first approach and agile development practices, we deliver scalable, secure, and high-quality digital products that drive business growth and long-term success.

DigiGo

DigiGo is a digital guest check-in and KYC platform designed to simplify hotel operations while enhancing the guest experience. It enables hotels, resorts, homestays, and other accommodation providers to collect guest information digitally, verify identities, and manage check-ins efficiently without relying on paper-based processes. The platform helps reduce front-desk workload, improve operational efficiency, and maintain accurate guest records in a secure and organized manner. With features such as digital registration forms, ID verification, real-time data management, and streamlined guest onboarding, DigiGo allows hospitality businesses to deliver faster and more convenient check-in experiences. Built with a focus on compliance, security, and ease of use, DigiGo supports accommodation providers in modernizing their guest management processes while saving time and improving service quality.