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Software engineer with commercial experience building production-ready, AI-driven full-stack web applications. Designed and delivered systems including an AI validation platform, meeting intelligence extraction workflows, and a multi-tenant CRM. Experienced across scalable backend services, API-driven architectures, and modern responsive web applications while integrating AI capabilities with cloud and third-party platforms. Strong end-to-end ownership from technical design and feature development to testing, deployment, and production support, collaborating closely with product and engineering teams.…Software engineer with commercial experience building production-ready, AI-driven full-stack web applications. Designed and delivered systems including an AI validation platform, meeting intelligence extraction workflows, and a multi-tenant CRM. Experienced across scalable backend services, API-driven architectures, and modern responsive web applications while integrating AI capabilities with cloud and third-party platforms. Strong end-to-end ownership from technical design and feature development to testing, deployment, and production support, collaborating closely with product and engineering teams.

Dmytro Kostelnyi

Full Stack Developer, Web Developer, Software Engineer, +5

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Software engineer with commercial experience building production-ready, AI-driven full-stack web applications. Designed and delivered systems including an AI validation platform, meeting intelligence extraction workflows, and a multi-tenant CRM. Experienced across scalable backend services, API-driven architectures, and modern responsive web applications while integrating AI capabilities with cloud and third-party platforms. Strong end-to-end ownership from technical design and feature development to testing, deployment, and production support, collaborating closely with product and engineering teams.…Software engineer with commercial experience building production-ready, AI-driven full-stack web applications. Designed and delivered systems including an AI validation platform, meeting intelligence extraction workflows, and a multi-tenant CRM. Experienced across scalable backend services, API-driven architectures, and modern responsive web applications while integrating AI capabilities with cloud and third-party platforms. Strong end-to-end ownership from technical design and feature development to testing, deployment, and production support, collaborating closely with product and engineering teams.

Available to hire

Software engineer with commercial experience building production-ready, AI-driven full-stack web applications. Designed and delivered systems including an AI validation platform, meeting intelligence extraction workflows, and a multi-tenant CRM.

Experienced across scalable backend services, API-driven architectures, and modern responsive web applications while integrating AI capabilities with cloud and third-party platforms. Strong end-to-end ownership from technical design and feature development to testing, deployment, and production support, collaborating closely with product and engineering teams.

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Intermediate

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Work Experience

Full-Stack Developer at ViGof time — Multi-Tenant CRM platform

January 1, 2023 - Present

Developed a scalable multi-tenant CRM platform using Django with isolated client environments within a shared architecture. Accelerated software delivery through AI-assisted development workflows using Claude Code, including Figma-to-code integration for rapid interface implementation. Researched and applied AI-assisted engineering practices to streamline development processes and improve productivity. Built reusable backend components and business workflows focused on long-term maintainability and platform scalability.

React Developer at Sigma Software

January 1, 2023 - December 31, 2023

Developed and maintained production-grade web applications within Agile development teams. Implemented backend services, REST APIs, and user-facing functionality while collaborating with cross-functional engineering teams. Participated in technical design, code reviews, testing, debugging, and continuous delivery. Contributed to building reliable, maintainable, and scalable software following modern engineering best practices.

Full-Stack Developer (Project) at Meeting Intelligence System

January 1, 2023 - Present

Developed an AI-powered meeting intelligence platform for extracting, processing, and organizing actionable insights from online meetings. Built a scalable backend infrastructure including load balancing, distributed caching, and real-time communication to support production workloads. Implemented end-to-end functionality across the software development lifecycle, including technical design, feature development, optimization, testing, deployment, and production support. Collaborated with product stakeholders to continuously improve platform capabilities based on business and user requirements.

AI Engineer (Project) at Humanities AI — AI Validation Platform

January 1, 2023 - Present

Designed and implemented an AI validation platform to evaluate LLM-generated content against humanistic values, ethical principles, and quality standards. Developed prompt engineering strategies and AI evaluation workflows to improve consistency, reliability, and explainability of model outputs. Conducted competitive landscape research and business analysis to identify market opportunities and translate product requirements into technical solutions. Contributed to scalable AI validation workflows supporting reliable and reproducible model evaluation.

Full-Stack Developer at Life time — Multi-tenant CRM platform

January 1, 2023 - Present

Developed a scalable multi-tenant CRM platform using Django with isolated client environments in a shared architecture. Accelerated delivery using AI-assisted development workflows with Claude Code, including Figma-to-code integration for rapid UI implementation. Researched and applied AI-assisted engineering practices to streamline development processes and improve productivity. Built reusable backend components and business workflows designed for long-term maintainability and platform scalability.

React Developer at Sigma Software

January 1, 2021 - January 1, 2023

Developed and maintained production-grade web applications, implementing backend services and REST APIs and supporting user-facing functionality. Worked with cross-functional teams on technical design, code reviews, testing, debugging, and continuous delivery. Focused on reliability, maintainability, and scalability.

at Sigma Software

January 1, 2021 - January 1, 2023

Developed and maintained production-grade web applications in agile teams. Implemented backend services and REST APIs and supported user-facing functionality while collaborating with cross-functional engineering teams. Participated in technical design discussions, code reviews, testing, debugging, and continuous delivery processes. Contributed to building reliable, maintainable, and scalable software following modern engineering best practices.

Web Developer at Sigma Software

January 1, 2021 - December 31, 2023

Developed and maintained production-grade web applications in Agile teams. Implemented backend services, REST APIs, and user-facing functionality, collaborating with cross-functional engineering teams. Participated in technical design, code reviews, testing, debugging, and continuous delivery. Worked on reliable, maintainable, and scalable software using modern engineering best practices.

Full-Stack Developer at Sigma Software

January 1, 2021 - December 31, 2023

Developed and maintained production-grade web applications in Agile teams. Implemented backend services and REST APIs and built user-facing functionality while collaborating with cross-functional engineering teams. Participated in technical design discussions, code reviews, testing, debugging, and continuous delivery. Contributed to building reliable, maintainable, and scalable software following modern engineering best practices.