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Senior frontend engineer with 15+ years of experience delivering SaaS web applications, specializing in React and Next.js with strong frontend architecture and responsive UI component development. Known for stabilizing and completing complex migrations, restoring missing interfaces, and refactoring large codebases for maintainability and performance. Works end-to-end across UI improvements, bug fixing, and new feature delivery within established architectures, using TypeScript, JavaScript, and REST/GraphQL integrations. Brings strong ownership through debugging, quality and observability practices, and collaboration with backend teams to keep frontend data contracts reliable over time.…Senior frontend engineer with 15+ years of experience delivering SaaS web applications, specializing in React and Next.js with strong frontend architecture and responsive UI component development. Known for stabilizing and completing complex migrations, restoring missing interfaces, and refactoring large codebases for maintainability and performance. Works end-to-end across UI improvements, bug fixing, and new feature delivery within established architectures, using TypeScript, JavaScript, and REST/GraphQL integrations. Brings strong ownership through debugging, quality and observability practices, and collaboration with backend teams to keep frontend data contracts reliable over time.

Silver Holmar

Front-End Developer, Web Developer, Software Engineer, +3

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Senior frontend engineer with 15+ years of experience delivering SaaS web applications, specializing in React and Next.js with strong frontend architecture and responsive UI component development. Known for stabilizing and completing complex migrations, restoring missing interfaces, and refactoring large codebases for maintainability and performance. Works end-to-end across UI improvements, bug fixing, and new feature delivery within established architectures, using TypeScript, JavaScript, and REST/GraphQL integrations. Brings strong ownership through debugging, quality and observability practices, and collaboration with backend teams to keep frontend data contracts reliable over time.…Senior frontend engineer with 15+ years of experience delivering SaaS web applications, specializing in React and Next.js with strong frontend architecture and responsive UI component development. Known for stabilizing and completing complex migrations, restoring missing interfaces, and refactoring large codebases for maintainability and performance. Works end-to-end across UI improvements, bug fixing, and new feature delivery within established architectures, using TypeScript, JavaScript, and REST/GraphQL integrations. Brings strong ownership through debugging, quality and observability practices, and collaboration with backend teams to keep frontend data contracts reliable over time.

Available to hire

Senior frontend engineer with 15+ years of experience delivering SaaS web applications, specializing in React and Next.js with strong frontend architecture and responsive UI component development. Known for stabilizing and completing complex migrations, restoring missing interfaces, and refactoring large codebases for maintainability and performance.

Works end-to-end across UI improvements, bug fixing, and new feature delivery within established architectures, using TypeScript, JavaScript, and REST/GraphQL integrations. Brings strong ownership through debugging, quality and observability practices, and collaboration with backend teams to keep frontend data contracts reliable over time.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Estonian

Fluent

Work Experience

Senior Software Engineer at ZeroTurnaround

July 1, 2013 - Present

Led migration of a mature SaaS web application from React to Next.js, reworking frontend architecture, TypeScript modules, and routing patterns to stabilize delivery inside an existing codebase. Restored missing UI components using React, Next.js, HTML5, and CSS3 and improved consistency across partially migrated screens. Resolved responsive and layout defects by refining CSS structure and Material UI behavior across desktop and mobile. Refactored legacy frontend modules to improve maintainability and performance by simplifying state flows and extracting shared UI components. Implemented new features in React/Next.js with REST APIs and GraphQL integration, while preserving established frontend architecture and data contracts. Diagnosed and fixed complex bug backlogs using browser devtools and error tracking, improving navigation, rendering, forms, and async data handling. Collaborated with backend teams (Node.js/Express, PostgreSQL, MongoDB) to support frontend stability during refac

Research Assistant at Minitrue, Inc

August 1, 2012 - October 1, 2013

Prototyped frontend modernization approaches using JavaScript and React, evaluating migration paths to improve maintainability. Built reusable UI components and page templates from Figma specifications using HTML5 and CSS3 to restore visual consistency across partially implemented flows. Created lightweight service integrations with Python and REST APIs so frontend experiments could consume structured data. Assessed performance optimization opportunities across rendering and asset loading using browser devtools and monitoring. Documented frontend architecture patterns, component reuse guidelines, and Git/GitHub workflows. Supported data-driven interface experiments by connecting prototypes to MySQL and DynamoDB-backed services through API-contract style interfaces.

Senior Mobile Developer at Mobi Solutions

February 1, 2006 - July 1, 2012

Developed cross-platform mobile and web-facing interfaces using JavaScript, HTML5, and CSS3 with a strong focus on responsive design principles later applicable to React/Next.js work. Designed reusable UI components and interaction patterns to improve interface consistency and maintainability. Integrated client applications with backend services built on microservices patterns and PostgreSQL/MongoDB, ensuring stable data contracts. Built deployment automation and CI/CD-friendly build pipelines and improved release reliability using version control discipline. Collaborated with backend teams using AWS services (EC2, S3, AWS Lambda) and ensured frontend consumers handled edge cases cleanly. Improved application quality through frontend debugging, error tracking, and monitoring, and contributed to internal tooling modernization with Webpack and npm workflows to ease refactoring and long-term maintenance.