Lead Frontend Engineer & Technical Writer.

I build frontend and full-stack products with React, Next.js and TypeScript: real-time data interfaces, maintainable design systems, and platforms shipped end to end. Five years shipping product, two of them leading the frontend.

Pune, India · ISTMS CS · SUNY Buffaloadnansadar09@gmail.com
Portrait of Adnan Sadar
10,000+
US equities served with live ratios & charting
5
Frontend engineers led as founding engineer
30%
Fewer server API calls via RTK Query caching
25%
Delivery-workflow efficiency gain across teams

Projects

Investors Engine

Lead Frontend Engineer · Feb 2025 – Jul 2026 · Full-stack investment research platform

I built this full-stack investment research platform end to end, with a Next.js and TypeScript frontend, real-time data interfaces, and a stack including WebSockets, Redis and Docker Compose. It brings historical ratios and charts for over 10,000 tickers into one product, with a Google Sheets extension for working with financial data.

Next.jsTypeScriptTailwind CSSWebSocketsRedisDocker Compose
investorsengine.com
The Investors Engine dashboard for NVIDIA, showing financial health and valuation ratios, five-year returns, CAGR tables and an intraday price chart
Ten years of ratios, valuation and intraday charting, on any of 10,000+ tickers.
Watchlist · live

PUSHED VIA REDIS PUB/SUB · NO POLLING · CLICK A ROW FOR RATIOS

10k+
tickers with historical ratios & charts
Sheets API
extension surfacing financials inside Google Sheets

PeopleBlox

Senior Software Engineer, LitmusBlox · Jun 2022 – May 2024 · Competency assessment platform

At LitmusBlox, I helped build PeopleBlox, a competency assessment platform, using React, Next.js and TypeScript. I established frontend conventions and tooling, led a team of five, and used Redux and RTK Query for data management, reducing API calls for cached data by 30%.

Next.jsReactTypeScriptReduxRTK QueryCypress
peopleblox.io
The PeopleBlox product site, headed 'Ten Tools' above 'One unified talent management system', with cards for the competency catalog, discovery survey, competency profile and talent readiness dashboard
The product site: ten tools spanning the talent-management workflow.
THE CACHE BOUNDARY, IN CODE
api/assessments.ts
export const assessmentsApi = createApi({
  reducerPath: "assessments",
  baseQuery: authedBaseQuery,
  tagTypes: ["Competency", "Review"],
  endpoints: b => ({
    getFramework: b.query({
      query: id => `/frameworks/${id}`,
      providesTags: ["Competency"],
      keepUnusedDataFor: 300,
    }),
    submitReview: b.mutation({
      query: body => ({ url: "/reviews", method: "POST", body }),
      invalidatesTags: ["Review"],
    }),
  }),
});
// Redux holds UI state only. Server state lives here.
−30%
API calls for cached data
Team of 5
mentored, reviewed, unblocked

Design Engineering

Interface studies where visual direction, interaction and frontend craft are developed together.

01 · UI/UX exploration · Biotechnology

DeNova Bio

An exploration in scientific storytelling: a premium biotechnology landing page shaped through editorial art direction, responsive layouts and motion-led interaction.

Art directionUI/UXMotion designResponsive UIFrontend development
View live experience(opens in a new tab)
DeNova Bio landing page concept with a deep-blue clinical interface, large editorial headline and biotechnology imagery

Latest writing

Notes on frontend architecture, AI-assisted workflows, and the tools I put through real work.

View all on /blog →

Five years of frontend, two of them responsible for other people's code.

I specialise in React, Next.js and TypeScript, building performant interfaces backed by architecture a team can actually maintain. I've led a frontend team of five, set conventions and tooling for new products, and shipped a full-stack platform end to end on my own. I write about the work, and lean on AI-assisted workflows to move faster without giving up rigour. Off the clock: long walks around Niagara and too many coffees.

FRONTEND
React · Next.js · TypeScript · Redux · React Query · Tailwind · Playwright · Jest
BACKEND
Node.js · Express · FastAPI · PostgreSQL · MongoDB · Prisma
PLATFORM
Docker · Kubernetes · NGINX · Redis · GitHub Actions · Cloudflare · AWS · Vercel
EDUCATION
MS Computer Science, SUNY Buffalo, 2025 · BTech IT, VIT Pune, 8.45 CGPA

References

I had the pleasure of working with Adnan closely at PeopleBlox. I can definitely say he's really hardworking and has in depth knowledge of the technology he's working on. He has a strong hold on Frontend technologies like React, Redux along with Next.js framework. He entirely setup the initial code and created solid guidelines to maintain the code and it's still helping us. Also, he's a calm person and works well even under pressure or difficult deadlines.
Manavi Thorve
Senior Software Engineer, LitmusBlox
As a designer, I collaborated with Adnan on multiple projects, and his ability to understand design requirements and seamlessly integrate them into the development process was invaluable. Adnan consistently demonstrated a proactive approach, taking the initiative to improve the user experience and optimize functionality. His attention to detail and strong coding skills made our collaboration smooth and highly productive. Adnan is a true team player. His communication skills, willingness to assist others, and collaborative nature contributed to a positive work environment. I highly recommend Adnan for any software development role. His technical prowess, problem-solving mindset, and collaborative spirit make him an asset to any team.
Aishwarya Kasture
Sr. UI/UX Designer, LitmusBlox
I had the pleasure of working closely with Adnan at PeopleBlox, where he has been a true leader and mentor to me. He is an incredibly hardworking and knowledgeable leader. His expertise in frontend technologies like React, Redux, and Next.js, as well as his ability to set up the architecture and establish strong codebase guidelines, has been essential to our team's success. Adnan's calm demeanor and approachable nature make him a highly likable teammate, who handles pressure effortlessly. He has guided me from the ground up, I am truly grateful for everything I have learned from him.
Gaurav Sonar
Senior Software Engineer, LitmusBlox
OFF THE CLOCK · BUFFALO, NIAGARA & IN BETWEEN
Niagara Falls seen from the American side on an overcast day
Niagara Falls State Park
The American side, on an overcast October afternoon.
Adnan standing at the upper rapids of Niagara Falls
Portrait by Niagara Falls
Early morning at the upper rapids.
Hayes Hall at the University at Buffalo South Campus
UB South Campus
Hayes Hall, University at Buffalo.
Buffalo harbour seen from a Lake Erie cruise boat
Lake Erie cruise
Buffalo harbour, first American summer.
Adnan at the University at Buffalo commencement ceremony
UB commencement
MS Computer Science, University at Buffalo, December 2025.
Adnan presenting at a podium in a University at Buffalo lecture hall
Presenting at UB
Mid-sentence at the podium, University at Buffalo.
Adnan at Eternal Flame Falls, a natural gas flame burning in a grotto behind the falling water
Eternal Flame Falls
Buffalo, NY. The flame still going behind the water.
Adnan standing in fresh snow beneath a tree still holding autumn leaves
First snow
The leaves hadn't fallen yet and the snow already had.
A figure silhouetted against a hazy sunset over rolling hills
Hills at sunset
Hazy ridgelines, a long way from Buffalo.
Adnan beside Lake LaSalle on the University at Buffalo North Campus, the lake fountain visible across the water
Lake LaSalle
UB North Campus, the fountain out on the water.

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