Logo for Weekday (YC W21)

Lead Backend Engineer

Role overview

Qualifications

  • 5+ years of experience in backend and platform systems at real scale
  • Deep expertise in Python, distributed/platform systems, API design, and SQL data stores
  • Hands-on experience with LLMs, agentic frameworks, and RAG
  • Strong problem-solving skills and independence

Responsibilities

  • Architect and build the core backend and platform from the ground up
  • Design and ship LLM agents that reason over large organizational data
  • Set the bar for engineering quality and make foundational architectural decisions
  • Operate with full autonomy and shape product and codebase

About the company

Weekday (YC W21) logo

Weekday (YC W21)

Staffing & Recruiting

Hire engineers vouched by other techies

Company details

IndustryStaffing & Recruiting
Company size11 - 50

Your match analysis

See how your profile stacks up against this role.

We compared the job requirements to your profile to show where you're strong and where you fall short.

Job description

This role is for one of the Weekday's clients

Salary range: Rs 5000000 - Rs 10000000 (ie INR 50-100 LPA)

Min Experience: 5+ years

Location: Remote (India)

JobType: full-time

We're building a one-of-a-kind company memory: a system that understands an organization's context, goals, and culture, giving both individual contributors and leaders unprecedented transparency into what's happening across the company and how it all aligns. Our goal is simple and hard: never let a company lose itself as it scales. We're backed by a16z and Together Fund, and we work closely with leaders from some of the strongest engineering organizations in the Valley. This is a senior engineering role, the architecture, the standards, and the systems you build now are the ones the rest of the company will be built on.

Responsibilities

• Architect and build the core backend and platform from the ground up, the foundational systems everything else depends on.

• Design and ship LLM agents that reason over large, messy, real-world organizational data, and make them reliable enough to trust.

• Make the foundational calls, architecture, infrastructure, data, tooling, and set the bar for engineering quality on the team.

• Operate with full autonomy. In a team this small, your judgment directly shapes the product, the codebase, and the company.

Requirements

Must Have

• You've spent years building and operating backend and platform systems at real scale, and you've been the person your team turned to for the hardest problems.

• Deep expertise in Python, distributed/platform systems, API design, and SQL data stores, comfortable owning systems end to end, from design through production.

• A track record of leading ambiguous, high-impact projects end to end. You've set technical direction, not just executed against someone else's. • Hands-on experience (or strong, fast-forming intuition) with LLMs, agentic frameworks, and RAG, and a feel for building dependable products on top of nondeterministic models.

• You want the scope, pace, and consequence of an early-stage company over the structure of a large one.

• Has owned and operated systems at meaningful scale at a strong engineering org, Staff / Senior Staff / Principal-level scope, even if the title varies. We care about scope and impact, not tenure or a year count.

• Example signal: Staff/Senior/Principal at Databricks, Snowflake, Google, Meta, Amazon, OpenAI, Anthropic, Stripe, Notion, Ramp, Scale AI, or an early/senior founding engineer at a reputable VC-backed startup.

• Most of their experience should not come from banks/financial companies, slow-moving non-tech, telecom, transportation/govt, etc.

• Has been a technical anchor, the person who sets direction, makes the hard architectural calls, and unblocks others.

• High drive for problem-solving and developing a deep, first-principles understanding of any challenge they take on.

• Strong agency and independence, doesn't rely on others when it isn't necessary, comfortable defining the problem as well as solving it.

• Excited (not just willing) to work in an early-stage environment: fast pace, fast iteration, high ownership.

• Important: Backend depth, building robust production systems, APIs, Python.

Nice to Have

• Previous founder, founding-member, or intrapreneur experience

• Drawn to new, ambiguous problems with no clear solution

• Fluent with AI tools for research and writing high-quality code

• Experience with LLMs, AI agents, and making sense of large/heterogeneous data

• Obsession with details and strong product sense • Strong communicator

Must-have skills

Backend Engineering, AI Engineer

Apply once. Then go straight to the hiring manager.

After you apply, unlock the direct contact details of the people who actually make the call. A quick follow-up makes you 5x more likely to land an interview.

MR

Marcus Rivera

Chief Revenue Officer

m.rivera@company.com
linkedin.com/in/marcusrivera
Unlocked after you apply
·

Back-End Engineer Related jobs

Other jobs at Weekday (YC W21)

Premium

Reach out to the hiring manager directly.

Gain access to the contact details of the hiring managers who actually decide, and reach out to network with them directly. That, plus more when you upgrade:

  • Full match report with fit score and gaps
  • Career diagnostics on how recruiters read you
  • Curated company matches and warm intros
  • 48h early access to new roles

Cancel anytime.