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Modern web applications, built the right way.
Performant. Maintainable. Scalable. Guaranteed.
Hi, I'm Sarkhan Koshkarli. I help companies build exceptional web applications.
Software Engineer with over 12 years of experience building scalable, high-quality web applications. Experienced in React, Next.js, Redux, and JavaScript/TypeScript on the frontend, and Node.js, Express.js, and GraphQL on the backend.
Known for delivering exceptional user experiences through modern UI development practices, performance optimization, and A/B testing. Skilled in writing clean, maintainable, and reusable code, and in leading cross-functional teams to deliver impactful, user-focused projects across the stack.
More About MeKey Accomplishments
TuneIn Broadcaster Portal
Developed and launched from scratch using Next.js and TypeScript, saving $500K annually by automating broadcaster submissions and streamlining workflows.
Payment Migration Success
Led migration of tunein.com's subscription provider from Recurly to Stripe, boosting conversion rates by 15% and optimizing payment flows through A/B testing.
Performance Optimization
Reduced web app page load times by 20% through effective code-splitting, lazy-loading, and optimization of static assets using Webpack and React.
Development Efficiency
Implemented a new data access layer (DAL), cutting development time by 25% and enabling faster feature delivery across teams.
Test Automation
Enhanced test automation coverage by 50%, reducing manual testing by 30% and improving product stability through better testing practices.
Professional Experience
Discover Sarkhan Koshkarli's professional journey and expertise.View technical skills →
Software Engineer
Talentful
Dec 2024 – Aug 2025
Implementing UI and frontend logic for AI-powered talent profile summaries and candidate-to-position matching, collaborating with backend teams to integrate and display model-generated data.
Key Achievements:
- Developed and maintained a TypeScript-based React application in a monorepo (NX), integrating GraphQL APIs for efficient data fetching and real-time updates
- Built and optimized Public Company and Position pages, allowing job seekers to explore companies and apply for roles
- Optimized frontend performance by improving rendering and reducing bundle size for a seamless experience
- Implemented and documented reusable UI components in Storybook, ensuring consistency across the app
- Wrote end-to-end tests with Cypress and unit tests with Jest, ensuring feature stability and reliability
Engineering Manager
TuneIn Radio
Sept 2022 – Aug 2024
Managed a cross-functional team, guiding frontend development in React and modern JS frameworks.
Key Achievements:
- Developed the TuneIn Broadcaster Portal from concept to launch, focusing on scalability and user experience with Next.js, TypeScript, Tailwind
- Implemented a new data access layer (DAL), working directly on its design and integration to improve development efficiency
- Established rigorous testing protocols, reducing errors and maintaining high quality standards
- Mentored and coached engineers, facilitating career growth and technical skill development across the team
- Defined and tracked key performance indicators (KPIs) to measure team performance, ensuring continuous improvement
Sr. Software Engineer
TuneIn Radio
Mar 2021 – Aug 2022
Specialized in full-stack web development with a focus on JavaScript/React and RESTful APIs.
Key Achievements:
- Led the migration of tunein.com's subscription provider from Recurly to Stripe, including implementation, A/B testing, and post-launch support
- Onboarded new developers, provided guidance on projects, and conducted peer reviews and architectural walkthroughs
- Developed a reporting NPM module integrated with the User Engagement API, driving data-informed decisions
- Supported the Test Automation team's setup, leading discussions on tech stack and architecture
Software Engineer III
TuneIn Radio
Jan 2019 – Mar 2021
Participated in all stages of product development, from design and architecture to implementation and testing.
Key Achievements:
- Owned projects end-to-end, delivering from initial design through large-scale rollout and post-release support
- Developed mobile-first front-end features and designed complex backend models and API endpoints
- Led key projects including building API endpoints for third-party authentication and creating new subscription flows
- Guided and managed test automation efforts with the offshore team in Ukraine
Technical Skills
Sarkhan Koshkarli's comprehensive technical expertise across the full stack.Get in touch to discuss your project →
Frontend
Backend
Testing
DevOps & Tools
Ready to Build Something Amazing?
With over 12 years of experience across the full stack, I bring both technical expertise and leadership skills to every project. Let's discuss how I can help bring your vision to life.
Let's Work Together
Ready to build something amazing? I'd love to hear about your project and how I can help bring your vision to life.
Get In Touch
Let's Start a Conversation
Whether you're looking to build a new application, optimize existing systems, or need technical leadership for your team, I'm here to help.
Location: San Francisco Bay Area, California
Website: https://sarkhankoshkarli.me