---
title: 'Senior Backend Engineer at Junior AI'
canonical: 'https://feeny.ai/job/senior-backend-engineer-junior-ai-new-york-m1aww8ky29p8'
type: 'job'
last_seen: '2026-09-07'
---

# Senior Backend Engineer at Junior AI

- **Company:** Junior AI
- **Location:** New York, NY
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-11-04
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/junior/ee302f72-1bf6-42cc-9a99-aff99e6c4cf9/application

**Skills:** Next.js, TypeScript, PostgreSQL, ClickHouse, System Design, Distributed Systems, Vector Search, LLM Infrastructure, Retrieval pipelines, Embeddings, Prompt orchestration, Internal infrastructure, Dev tools

> Join Junior as a Senior Backend Engineer to architect and scale AI-driven research platforms in New York City. You will own reliability, optimize data flows, and lead projects involving LLM interactions and distributed systems.

## Job description

## 👶 ABOUT JUNIOR

Junior is building the AI operating system for investment research. Our software helps private equity firms, consultants and financial institutions complete high-stakes research workflows dramatically faster - from diligence and memo writing to market mapping, research synthesis and strategic analysis.

We’re trusted by several of the world’s top private equity firms, Big Four consultancies and leading financial institutions.

- Bootstrapped and profitable
- $25M+ in revenue after growing 10x last year
- 60+ people across the company
- 23-person engineering team, growing to 40+ this year
- Core stack: TypeScript, Next.js and PostgreSQL

You’d be joining early enough to shape the product, engineering culture and company, but with enough traction that everything you build lands immediately in front of demanding, paying customers.

## 💡 ROLE DESCRIPTION

As a Backend Engineer, you’ll help build and scale the systems that power our AI-driven research platform. This is a systems-level role - ideal for engineers who love thinking about data flows, orchestration, and performance across complex distributed systems.

You'll have the unique opportunity to:

- Ship quickly
- Architect and scale backend systems that support high-throughput LLM interactions, vector search, and multi-agent orchestration.
- Stitch together AI infrastructure across model providers, data stores, and internal APIs to create cohesive, performant systems.
- Own reliability and observability, helping us evolve our database (Postgres / ClickHouse) and job orchestration systems.
- Prototype new backend capabilities (retrieval pipelines, caching layers, async task queues) that let us build faster and smarter.
- Shape our engineering culture

## 🔥 ABOUT YOU

We're looking for product-minded backend engineers who:

- Are based in NYC and excited to work 5 days a week in person
- Are excited by the intersection of AI infrastructure, financial systems, and backend engineering
- Have experience owning backend projects end-to-end — from architecture through to production
- Are strong in Python and TypeScript
- Have worked with PostgreSQL and care about data modelling, reliability, and system design
- Are comfortable building APIs, internal tools, workflows, and infrastructure that support real customers
- Are eager to contribute to product decisions, not just execute tickets
- Feel like you are never building fast enough

Bonus points for experience working on:

- Billing, payments, usage-based pricing, or financial workflows
- Internal infrastructure / dev tools at startups
- Data pipelines, workflow orchestration, or event-driven systems
- Retrieval, embeddings, or prompt orchestration

## 🌵 BENEFITS

All the usual benefits (competitive pay and equity, private healthcare etc). Unusual benefits:

- Gym membership
- In-office cook
- Summers working in Greece by the beach

## 📩 HOW TO APPLY

If you're excited about the opportunity to drive innovation at Junior, we'd love to hear from you! Email us at careers@myjunior.ai with your resume and a brief introduction. We can't wait to meet you! 🙌

## About Junior AI

## Company Overview
- **One-liner**: Junior AI provides voice intelligence and AI-powered analysis for M&A teams, turning expert call transcripts into structured, searchable knowledge.
- **Entity Type**: Private (Seed stage, based on "seed to Series A" language on careers page)
- **Headquarters**: New York City, New York, USA
- **Founded**: 2023
- **Founders**: Not publicly disclosed

## Core Business
- Primary industry/industries: AI-powered software for investment research, M&A diligence, and private equity workflows
- Target customers: B2B – investment professionals, private equity firms, corporate development teams, investment banks, management consultants (MBB, Big 4, MegaCap PE Funds, global investment banks)
- Mission or purpose statement: "Using AI to streamline investment research" (from about page)

## Products & Services
- **Junior Platform**: Voice intelligence platform that records, transcribes, and analyzes expert calls, diligence interviews, and pipeline discussions. Includes:
  - Best-in-class transcription with structured extraction of expert call insights
  - Instant key takeaways automatically generated after each call
  - Intelligent search across transcripts to pinpoint relevant insights
  - Quantitative tracking to monitor findings across interviews
  - Custom GPT-based synthesis for querying and summarizing expert input
- **Alexandria**: A custom conversational library that centralizes all notes, searchable by deal, sector, or attendees.
- **Compliance Tools**: Real-time compliance oversight, programmatic MNPI detection, zero data retention agreements with underlying model providers, data retention controls, secure data hosting.
- **Integrations**: Calendar (Outlook/Gmail), recording bot for Zoom/Teams/GMeet/Webex, direct pipelines from leading expert networks, APIs for data export.

## Market Standing
- **Valuation/Market Cap**: Not publicly available
- **Key Metric**: 30% month-over-month growth (from careers page); "trusted by thousands of consultants, investors, and bankers"
- **Notable Investors/Partners**: Not publicly disclosed
- **Growth Signals**:
  - 30% MoM growth
  - 24 team members (per careers page; Built In lists 111 total employees – conflicting reports, likely reflecting different timeframes)
  - "Seed to Series A" trajectory over 18 months
  - Expanding product features (e.g., "Every data source" coming soon)

## Competitive Advantages
- **AI-native for M&A**: Custom NER engine trained on deal workflows, recognizing entities that matter to investors and advisors.
- **Enterprise-grade compliance**: Programmatic MNPI detection, zero data retention with model providers, GDPR-aligned controls, secure hosting on Junior’s infrastructure.
- **Deep integration**: Direct pipelines from leading expert networks, calendar and meeting platform bots, APIs for data warehouse connectivity.
- **Speed and focus**: Small team, weekly deployments, fast iteration – "Speed is our competitive advantage."

## Strategic Focus
- Building the "AI brain for M&A" – turning messy transcripts into actionable intelligence
- Expanding data ingestion methods and source connectivity (recording bot, expert networks, file uploads, manual notes)
- Scaling from seed to Series A while maintaining velocity and customer obsession
- Institutional knowledge capture – reducing rework and increasing IP value

## Why Work Here
- **Culture**: "Small team, big ownership" – end-to-end ownership from conception to deployment; ship meaningful work immediately
- **Values**: Ship Fast, Show Your Work, Open by Default, Customer First, Velocity over Perfection, Meritocracy, Radically Transparent, Own It
- **Work environment**: In-office at NYC headquarters (HQ in New York, all jobs listed as "In-Office" on Built In)
- **Engineering culture**: Weekly deployments, "fix fast", AI-native tech stack, direct customer interaction
- **Perks**: Not explicitly listed, but emphasis on solving real problems, no politics, visible roadmaps and metrics
- **Growth**: 30% MoM growth, seed-stage startup with clear product-market fit, opportunity to shape the company

## Sources
1. [junior.ai](https://junior.ai/)
2. [junior.ai/about](https://junior.ai/about)
3. [junior.ai/careers](https://junior.ai/careers)
4. [jobs.ashbyhq.com/junior](https://jobs.ashbyhq.com/junior)
5. [builtin.com/company/junior](https://builtin.com/company/junior)

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