Sandeep Machiraju | Advanced Web Dev

Senior Frontend Engineer building scalable frontend systems.

I work on React, Next.js, real-time systems, frontend architecture, and AI-assisted workflows at Radius. I also write Advanced Web Dev, a newsletter for engineers who want to understand the internals behind production web applications.

Contact me Read Advanced Web Dev Resume

years building production web apps

20k+

LinkedIn followers

4.7k+

newsletter readers

Experience

Frontend systems with measurable product impact.

I have built fintech, healthtech, real estate, and B2B commerce products across React, Next.js, Angular, WebSockets, SSE, payment flows, and performance-critical dashboards.

Radius

Feb 2025 - Present · 1 yr 9 mos

Full-time · Bengaluru, Karnataka, India

SDE - 2 - Frontend Development

Hybrid

Led end-to-end development of a real-time Chat Module from scratch using WebSockets, enabling scalable real-time communication for agents across the platform.
Led development of multiple key dashboards (Clients, Transactions, Auditor), architecting reusable components and improving usability + data accessibility for real estate agents.
Designed and shipped the "Set Signing Order" feature, integrating seamlessly with DocuSign APIs for complex multi-signer workflows.
Debugged and optimized performance in a complex, 9-year-old legacy React + Redux-Saga codebase, improving stability and maintainability across critical modules.
Refactored large portions of the UI into modular, reusable components using React best practices, accelerating feature delivery by 25% and improving long-term maintainability.
Reduced production bugs by 40% through deep QA cycles, regression testing, and targeted code clean-up.
Spearheaded performance optimization using lazy loading, memoization, and virtualized lists, cutting initial load time by 18% on the legacy codebase.
Introduced test coverage improvements with Jest, enabling safer deployments and faster CI feedback loops.

Resonately

Apr 2024 - Jan 2025 · 10 mos

Freelance

Senior Software Engineer

Remote

Architected an offline-first architecture using MediaRecorder API and IndexedDB in React, delivering 0% data loss even during connectivity outages.
Built real-time transcription workflows for doctors using Server-Sent Events (SSE), increasing productivity by 40% and streamlining post-appointment processes.
Integrated Mixpanel for user analytics (15% feature adoption lift) and Slack-Sentry for crash monitoring (50% reduction in downtime).
Ensured platform scalability to support 5,000+ daily appointments with 99.9% uptime in an early-stage healthcare SaaS environment.
Developed a real-time search and analysis tool using React.js and REST APIs, leveraging LangChain + OpenAI to analyze patient feedback and help manufacturers improve hearing aid products.
Created monitoring dashboards to track transcription accuracy and system performance, reducing operational bottlenecks by 30%.

Wint Wealth

2 yrs 8 mos

Full-time · Bengaluru, Karnataka, India

SDE - 2 - Frontend Development

May 2023 - Mar 2024 · 11 mos · Hybrid

Implemented and optimized the payment flow for fixed deposits by integrating multiple banks and payment gateways (CCAVenue, Razorpay), increasing transaction success rates by 30%.
Built the IpoKart product as sole developer, integrating multiple SME IPOs and creating visual graphs that improved user engagement by 25% within the first month of launch.
Created a proof-of-concept for cost-effective frontend error tracking using Mixpanel analytics, reducing debugging time by 40% and improving development efficiency across the team.
Conducted technical interviews for frontend candidates, improving hiring process efficiency by 20% and ensuring top-tier talent joined the team.

SDE - 1 - Frontend Development (Early)

Aug 2021 - May 2023 · 1 yr 10 mos

Single-handedly architected and developed the SGB investment platform in Next.js, implementing SSR for improved performance and SEO, and establishing a CI/CD pipeline with AWS Amplify.
Optimized website performance by refactoring CSS, JavaScript, and webpack configuration, increasing page load speed by 32%.
Created and documented frontend development guidelines, promoting code consistency and seamless collaboration for new developers.
Revamped the bonds investment platform in Gatsby with a new design system, increasing user footfall by 20%.
Built visual dashboards for tracking referrals and investments across asset types, streamlining tax calculations and reporting.
Supported the CX team by troubleshooting customer issues in virtual meetings and delivering timely solutions.

Eunimart

1 yr 10 mos

Full-time

Team Lead - UI Development

Mar 2021 - Jul 2021 · 5 mos · Hyderabad, Telangana, India

Key accomplishments include:

Spearheaded the development of a sophisticated B2B application utilizing Micro Frontend Architecture with Angular, enhancing user experience for multiple user roles across the platform.
Successfully converted an existing jQuery application to Angular, improving performance and maintainability while reducing load times by 30% through optimized coding practices.
Designed and implemented access controls for the website that effectively restricted user roles based on business logic requirements, increasing security compliance by 40%.
Collaborated with cross-functional teams to redevelop a client's application featuring complex logic and high security standards while integrating a custom-developed CMS for seamless content management.
Recognized as "Employee of the Month" and "Employee of the Quarter" for outstanding contributions to project success and team leadership during tenure.

UX / UI Developer

Oct 2019 - Mar 2021 · 1 yr 6 mos · Greater Hyderabad Area

AlgonoX Technologies

Dec 2018 - May 2019 · 6 mos

Greater Hyderabad Area

UI Developer (Intern)

I started as software developer intern in Algonox where I got to work on multiple projects with multiple technologies like jQuery,Angular where in I had developed dynamically programmed web apps with REST API integration. I used coordinates from Open CV image recognition from REST API to draw certain highlights on PDFs in frontend both in jQuery and Angular.

Worked on jQuery for creating AI Based tool
Using Angular created Admin Dashboard
Integrated with REST APIs
Worked on libraries that are useful for drawing on PDFs in web

Sick Seek

Jan 2017 - Mar 2019 · 2 yrs 3 mos

Self-employed · Guntur, Andhra Pradesh, India

Student Entrepreneur - Founder of Sick Seek

On-site

I founded Sick Seek, a comprehensive medical health platform addressing the needs of both consumers and businesses. The platform was developed using PHP, MySQL, JavaScript, and jQuery, with a WordPress landing page to ensure a seamless user experience. Key highlights include:

Dual-Focused Solution:

B2C Features: Enables users to:
- Find the availability of doctors in nearby hospitals.
- Check the availability of medicines at local pharmacies.
B2B Features: Assists shopkeepers in:
- Managing and understanding stock availability.
- Receiving real-time notifications and alerts about low inventory.

Technology Stack:

Developed the core platform using PHP and MySQL for robust back-end operations.

Implemented JavaScript and jQuery for interactive and dynamic user experiences.

Built a professional and engaging landing page with WordPress to enhance discoverability.

Purpose and Impact:

Streamlined healthcare accessibility for patients and medical consumers.

Improved operational efficiency for medical shops with better stock management tools.

Vision:

Bridged the gap between healthcare providers, pharmacies, and consumers with an intuitive, tech-driven solution.

Advanced Web Dev

Latest writing

Latest 3 from 19 Advanced Web Dev Substack articles, focused on frontend internals, architecture, performance, and production engineering patterns.

View all 19 articles

Level up with Advanced Web Dev

Frontend architecture, real-time systems, performance, JavaScript internals, and practical engineering notes from production work.