What is the role and location?

Software Engineer - Fullstack at Letterdrop (YC-backed). Location: Bengaluru, Karnataka, India. Full-time role.

How much experience is required?

1+ years of fullstack engineering experience; strong CS fundamentals and ability to ship fast.

₹14–25 LPA, based on experience and fit.

What technologies are used?

Flask, React, Node.js, MongoDB, BigQuery, Electron; plus LLM/AI features and various integrations.

What’s the interview process?

15-min intro call → 60-min live coding → 2-hour take-home → reference checks → offer.

Engineers who want early-stage ownership, move fast, write maintainable code, and enjoy product-focused work across frontend, backend, and AI.

Software Engineer (Fullstack)

Tag:FullTime

Posted: 04/11/2025

🏢 Letterdrop — Software Engineer (Fullstack) 📍 Location: Bengaluru, Karnataka 💰 Salary: ₹14–25 LPA 🧑‍💻 Type: Full-Time 🧪 Experience: 1+ years

How to Apply FAQs Apply / Official

🌟 Letterdrop — Software Engineer (Fullstack) • Bengaluru • Apply Now

Post Date: November 4, 2025 • By: Amit

Ship fast across web, desktop, and AI surfaces

Own features end-to-end with Flask, React, Node, and LLMs while working directly with the CEO at a YC-backed startup.

Note: Strong CS fundamentals, clean code, and speed are critical. Expect code reviews, quick iterations, and high product quality.

At a Glance

Company: Letterdrop (YC)

Role: Software Engineer — Fullstack

Work Location: Bengaluru, Karnataka

Model: Full-Time

Compensation: ₹14–25 LPA

Experience: 1+ years

Apply: Apply — Official

Tip: Link to public repos that showcase Flask APIs, React UI architecture, Node services, and performance/scaling wins.

About Letterdrop

Letterdrop is a YC-backed seed-stage startup helping sales-led companies uncover net new pipeline with automated social selling and unique intent data. We zig where others zag by building trust and delivering real business outcomes for customers like Virtuous, Disco, and Glide.

You’ll work closely with the CEO to design and build features across web, desktop, and AI capabilities used by thousands of sales and marketing users.

About You

Strong CS fundamentals (memory, parallelization, runtime). Pragmatic with resources.
Independent, quick learner; comfortable finding answers via docs, GitHub, forums, and code.
Write clean, maintainable code; value readable code for you and your teammates.
Move fast—multiple bugs/improvements/features per week.
Use AI tools (Cursor, Claude Code) to reduce boilerplate and increase output.
Care about great product experiences—low latency, low crash rates, excellent UX.

Who This Is For / Not For

For: Early engineers seeking ownership, broad scope across stack and AI, and rapid growth on a small hardworking team.

Not for: Those needing heavy structure/handholding or unable to prioritize fast-paced startup work.

What You Will Do

Ship new features quickly and reliably.
Improve stability, quality, and performance; scale inefficient code.
Architect & implement LLM/ML-based features.
Collaborate on code reviews and best practices.
Work directly with the CEO on roadmaps and product direction.

Requirements

1+ years fullstack experience in Node, React, Flask (fast learners welcomed).
Stack: Flask, React, Node.js, MongoDB, BigQuery, Electron, and others.
Publicly viewable side projects on GitHub.
Comfortable across frontend, backend, and dabbling in LLMs/AI.
Can act independently, ship quickly, and communicate clearly in English.

Why You Should Apply

High ownership and direct impact.
Direct collaboration with the CEO.
Rapid learning and broad exposure—ship weekly across surfaces.
Pragmatic, grounded product culture; break-even and building for real customer value.

Interview Process

15-min initial phone interview.
60-min live coding interview (Zoom).
2-hour take-home project.
Reference checks (1–2 previous managers).
Offer and onboarding.

Key Details

Item	Info
Position	Software Engineer — Fullstack
Company	Letterdrop (YC)
Work Location	Bengaluru, Karnataka, India
Model	Full-Time
Experience	1+ years
Compensation	₹14–25 LPA
Core Tech	Flask, React, Node.js, MongoDB, BigQuery, Electron; LLM/AI features
Posting Date	November 4, 2025
Apply Link	Apply — Official

All details per the provided description; confirm on official channels before applying.

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How to Apply — Letterdrop Fullstack Engineer — Bengaluru

Open the job post: Apply — Official.
Tailor resume to Flask, React, Node, MongoDB/BigQuery, and LLM/AI projects; include repos & demos.
Highlight CS fundamentals, scaling stories, and product craftsmanship.
Prepare for intro call, live coding, take-home, and references.

FAQs — Letterdrop — Fullstack Engineer — Bengaluru

Is this a full-time role?

Yes, full-time based in Bengaluru with fast-moving startup cadence.

Which stacks are used?

Flask, React, Node.js, MongoDB, BigQuery, Electron; plus LLM/AI integrations.

What experience is expected?

1+ years fullstack engineering with strong fundamentals and the ability to ship quickly.

What is the compensation?

₹14–25 LPA depending on experience and fit.

What makes a strong application?

Clean, maintainable code; public repos; scaling/performance wins; product quality mindset; AI-assisted dev efficiency.