Lead Frontend Engineer & Technical Writer.

I build scalable frontend architectures — clean React / Next.js ecosystems, real-time data interfaces, and design systems that hold up as teams grow. Five years shipping product, two of them leading the frontend.

Pune, India · ISTMS CS — SUNY Buffaloadnansadar09@gmail.com
Portrait of Adnan Sadar
01 — WHAT THE NUMBERS SAY
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

Deep-dive case studies

SYSTEM DESIGN · ARCHITECTURE · OUTCOMES
01 / CASE STUDY

Investors Engine

Founding Software Engineer · Feb 2025 – Jul 2026 · Full-stack investment research platform

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
02 / CASE STUDY

PeopleBlox

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

Next.jsReactTypeScriptReduxRTK QueryCypress
peopleblox.io
The PeopleBlox product site, headed 'Ten Tools — 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

References

WORKED WITH ME AT LITMUSBLOX
I had the pleasure of working with Adnan closely at PeopleBlox. He's really hardworking and has in-depth knowledge of the technology he's working on, with a strong hold on frontend technologies like React and Redux along with Next.js. He entirely set up the initial code and created solid guidelines to maintain it — and it's still helping us. He's also 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 development was invaluable. He consistently took the initiative to improve the user experience and optimise functionality. His attention to detail and strong coding skills made our collaboration smooth and highly productive — a true team player.
Aishwarya Kasture
Sr. UI/UX Designer, LitmusBlox
Adnan has been a true leader and mentor to me at PeopleBlox. His expertise in React, Redux and Next.js, and his ability to set up the architecture and establish strong codebase guidelines, has been essential to our team's success. His calm demeanour makes him a highly likable teammate who handles pressure effortlessly. He guided me from the ground up.
Gaurav Sonar
Senior Software Engineer, LitmusBlox
/ ABOUT

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

I specialise in React, Next.js and TypeScript — 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
02 — WRITTEN WORK
/ BLOG

Latest writing

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

View all on /blog →
OFF THE CLOCK — BUFFALO, NIAGARA & IN BETWEEN10 PHOTOS
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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