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Senior Software Engineer with 20+ years of experience designing and scaling SaaS platforms, from greenfield prototypes to production systems serving tens of thousands of users. Proven ability to lead technical projects end-to-end—shaping architecture, mentoring engineers, and delivering reusable, scalable components. I’ve founded and led teams, built platforms from the ground up, and driven product strategy and delivery across cloud-native infrastructures.…Senior Software Engineer with 20+ years of experience designing and scaling SaaS platforms, from greenfield prototypes to production systems serving tens of thousands of users. Proven ability to lead technical projects end-to-end—shaping architecture, mentoring engineers, and delivering reusable, scalable components. I’ve founded and led teams, built platforms from the ground up, and driven product strategy and delivery across cloud-native infrastructures.

Sergey Demidenko

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Senior Software Engineer with 20+ years of experience designing and scaling SaaS platforms, from greenfield prototypes to production systems serving tens of thousands of users. Proven ability to lead technical projects end-to-end—shaping architecture, mentoring engineers, and delivering reusable, scalable components. I’ve founded and led teams, built platforms from the ground up, and driven product strategy and delivery across cloud-native infrastructures.…Senior Software Engineer with 20+ years of experience designing and scaling SaaS platforms, from greenfield prototypes to production systems serving tens of thousands of users. Proven ability to lead technical projects end-to-end—shaping architecture, mentoring engineers, and delivering reusable, scalable components. I’ve founded and led teams, built platforms from the ground up, and driven product strategy and delivery across cloud-native infrastructures.

Available to hire

Senior Software Engineer with 20+ years of experience designing and scaling SaaS platforms, from greenfield prototypes to production systems serving tens of thousands of users.

Proven ability to lead technical projects end-to-end—shaping architecture, mentoring engineers, and delivering reusable, scalable components. I’ve founded and led teams, built platforms from the ground up, and driven product strategy and delivery across cloud-native infrastructures.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Co-Founder & Senior Software Engineer & Tech Lead at GrassEqual / Party Labz

June 1, 2023 - Present

Led technical strategy and product development for a remote startup focused on event management solutions. Architected and built Party Labz from the ground up—a full event management SaaS with AI integrations, payments processing, and cloud infrastructure (Azure). Designed scalable components and patterns to support white-label deployments and corporate event management. Mentored engineers and delivered end-to-end features.

Tech Lead at My Digital Office

February 1, 2021 - Present

Led development for a mission-critical analytics platform supporting hotels in North America, improving system stability and team performance. Mentored developers across 12-hour time zones; established architectural standards; contributed 25-50% of full-stack development; designed AWS-based infrastructure and CI/CD pipelines.

Senior Full-Stack Software Engineer at HyperGiant (Consulting)

February 1, 2021 - September 25, 2025

Led full-stack solutions for a diverse range of clients, from startups to Fortune 500 companies. Rapid prototyping of MVPs to validate business concepts; delivered production-ready features for enterprise-grade applications in collaboration with cross-functional teams.

Full-Stack Developer at Shaw Communications

February 1, 2019 - September 25, 2025

Contributed to Shaw Business’s corporate website and service portals; created responsive React components and REST APIs; integrated with enterprise systems and internal workflows.

Software Engineer / Team Lead at Various (Early Career & International Experience)

December 31, 2015 - September 25, 2025

Led teams across Belarus, Russia, and Canada, building large-scale telecom billing systems and migrating legacy applications to modern web platforms; gained extensive international experience.

Co-Founder & Senior Software Engineer & Tech Lead at GrassEqual / Party Labz (Remote)

June 1, 2023 - Present

Led technical strategy and product development for a technology startup focused on event management solutions.

Senior Full-Stack Software Engineer at HyperGiant (Consulting) Remote

February 28, 2021 - September 25, 2025

Developed and delivered full-stack solutions for a diverse range of clients, from startups to Fortune 500 companies.

Senior Full-Stack Software Engineer at Shaw Communications

February 28, 2019 - September 25, 2025

Contributed to Shaw Business corporate website and service portals, creating responsive React components and REST APIs integrated with enterprise systems like Salesforce.