ApplySarthi

Founding Engineer

Backdoor

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This role on the market

200 open founding roles across 137 companies are on ApplySarthi right now, most of them in Bengaluru (19), Delhi NCR (6), Hyderabad (3).

What founding roles keep asking for: LLMs (32%), SaaS (24%), Python (22%), B2B (20%), PostgreSQL (16%), TypeScript (16%), CRM (15%), AWS (14%) — counted across their open postings here.

Founding Engineer jobs in India · Remote Founding Engineer jobs

Counted across 14 company job boards, updated as roles open and close.

Preparing for this interview

Interviews for founding roles keep coming back to LLMs, SaaS, Python, B2B. Practise those questions before you sit with Backdoor.

Questions you are likely to be asked

  1. Why do you want to join Backdoor?
  2. Tell me about a hard bug you tracked down. How did you find the cause?
  3. How do you decide what to test, and what does good code review look like to you?
  4. Describe a time a deadline forced a trade-off in quality. What did you choose and why?
  5. How would you design an API for a feature you have worked on?

Prep Sarthi gives you a free mock interview: an AI interviewer asks you questions like these out loud, from your own CV and this job, and shows your score and your weakest answer.

Practise the Founding Engineer at Backdoor interview free →

Hiring a Founding Engineer Company Name- Backdoor Website- https://textbackdoor.com We are building personal agents that help people land jobs. Think of it like the instinct but for finding you jobs. Been 3 months working on this and things are going fast and now we are hiring our first Founding Engineer Location - Remote Requirements- need a fullstack + ai engineer. Someone who's worked on agents before. Our agents are built on Mastra. Plus if you've been in a startup before as a founding engineer. Work will mainly revolve around building out the product + fixing bugs Contract Based Role Salary Range- $1-2k/mo Official Listing link - https://textbackdoor.com/team

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Listed on wellfound · posted 2026-10-17. ApplySarthi collects openings and links to application pages; the role is advertised by Backdoor, not by us.