I'm a senior software engineer with 15+ years of experience designing and delivering SaaS products, modern web applications, and scalable systems for distributed international teams. I focus on delivering robust frontend and backend solutions using Angular, TypeScript, Node.js, NestJS, and AWS serverless technologies. I excel at designing maintainable architectures, integrating third-party services, and taking ownership in remote-first environments. I enjoy collaborating with product and engineering teams to deliver high-quality software across the full stack.

Kostiantyn Ivannikov

I'm a senior software engineer with 15+ years of experience designing and delivering SaaS products, modern web applications, and scalable systems for distributed international teams. I focus on delivering robust frontend and backend solutions using Angular, TypeScript, Node.js, NestJS, and AWS serverless technologies. I excel at designing maintainable architectures, integrating third-party services, and taking ownership in remote-first environments. I enjoy collaborating with product and engineering teams to deliver high-quality software across the full stack.

Available to hire

I’m a senior software engineer with 15+ years of experience designing and delivering SaaS products, modern web applications, and scalable systems for distributed international teams. I focus on delivering robust frontend and backend solutions using Angular, TypeScript, Node.js, NestJS, and AWS serverless technologies.

I excel at designing maintainable architectures, integrating third-party services, and taking ownership in remote-first environments. I enjoy collaborating with product and engineering teams to deliver high-quality software across the full stack.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

English
Fluent
Spanish; Castilian
Advanced
Ukrainian
Fluent

Work Experience

Senior Software Engineer at simpleshow GmbH
February 1, 2026 - May 1, 2026
Developed frontend functionality for AI-assisted video creation workflows and content management systems; worked within a large Angular application (~15–20 modules); contributed to maintainability and upgrade readiness across product areas; collaborated with product and engineering teams in a distributed environment; supported biweekly release cycles.
Senior Fullstack Software Engineer at Agendacita
August 1, 2023 - February 1, 2026
Designed and developed a SaaS platform from scratch using Angular, NestJS, and AWS serverless technologies; built frontend systems and backend APIs for appointment-based workflows; integrated third-party services; implemented infrastructure with AWS Lambda, API Gateway, DynamoDB, Cognito, and S3; built deployment workflows and CI/CD pipelines; owned product implementation across frontend, backend, infrastructure, and deployments.
Senior Software Engineer at Svitla Systems
March 1, 2022 - August 1, 2023
Migrated AngularJS applications toward modern Angular architecture; delivered frontend functionality and modernization improvements; modernized mobile applications from Ionic Cordova to Capacitor; worked in an international team (~8–10 engineers); participated in code reviews and engineering discussions.
Senior Software Engineer at Virtido
December 1, 2020 - December 1, 2021
Developed and enhanced functionality for SaaS wealth management systems; delivered frontend features and improvements across multiple product modules; improved maintainability and component consistency; collaborated with distributed product teams.
Team Lead / Senior Software Engineer at GlobalLogic
October 1, 2019 - December 1, 2020
Contributed to OTT applications across iOS, Android, Apple TV and Android TV platforms; participated in frontend and backend development across multiple projects; coordinated development tasks and collaborated with distributed teams; mentored 6 junior developers; conducted code reviews and supported delivery processes.
Senior Software Engineer at Lagoteam
November 1, 2018 - October 1, 2019
Built analytics dashboards and reporting tools using Angular and D3.js; delivered interactive data visualization functionality across multiple application modules; developed features focused on usability and business insights.
Senior Software Engineer at Wildix
September 1, 2017 - October 1, 2018
Developed functionality for VoIP and telecom systems; refactored existing systems to improve maintainability and code quality; created API documentation and maintained browser extension functionality; worked within a large engineering organization.
Software Engineer at Atniwe
September 1, 2015 - September 1, 2017
Developed hotel management platform functionality using Angular and backend integrations; participated in migration activities from AngularJS toward modern Angular approaches; delivered frontend features and product enhancements.
Software Engineer at zTeam
September 1, 2013 - September 1, 2015
Developed websites, e-commerce solutions, and business applications; built and maintained production functionality for client projects; delivered frontend implementations and integrated backend systems.

Education

Master’s Degree in Software Engineering at Khmelnytsky National University
January 11, 2030 - June 15, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
See more

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