---
title: 'Senior Software Engineer (Full Stack) at Sonar'
canonical: 'https://feeny.ai/job/senior-software-engineer-full-stack-sonar-new-york-rh8y2f11j1s1'
type: 'job'
last_seen: '2026-09-07'
---

# Senior Software Engineer (Full Stack) at Sonar

- **Company:** Sonar
- **Location:** New York, NY
- **Compensation:** $150k–$250k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-10-31
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/sonar-us/3e760f3d-e31b-4716-8be5-410fc8dbc8cf

## Job description

## ABOUT SONAR

Sonar’s an early-stage start up revolutionizing the limited partner (LP) tech stack. Allocators like sovereign wealth funds, university endowments, insurance companies, and family offices invest in a variety of assets — either directly or through managed funds. Yet, the systems available today are woefully inadequate for their needs. We’re changing that. We hope you'll join this mission!

We work in the office every day, not because we have to, but because we want to. The work is genuinely meaningful, and while we take work very seriously, we don’t take ourselves too seriously.

We founded Sonar because we wanted to build two things:

1. A generational company that outlasts us
2. A culture that we wish we had at the companies we worked for

And as much as we care about your technical prowess, we’re looking for a good culture fit. Bonus points if you have good taste in music!

## THE ROLE

Engineering at Sonar sits at the intersection of AI, finance, and infrastructure. You’ll be designing systems that power AI-driven fund diligence and portfolio management for institutional investors. You’ll work across the stack, from distributed systems and scalable data ingestion pipelines to AI agents and reporting interfaces that LPs rely on daily.

This role is ideal for someone who’s looking to jump into an early-stage environment (i.e. you’ll be figuring out a ton of things with us), enjoys thinking from first principles, and wants to build durable systems that reimagine how capital allocators evaluate and invest.

## RESPONSIBILITIES

- Build core systems from the ground up. Design and implement the foundations of Sonar’s product—from scalable APIs and distributed data pipelines to intuitive interfaces that bring complex information to life.
- Work across the stack. You’ll move between backend services, frontend components, and infrastructure, shipping features end-to-end.
- Apply AI pragmatically. Develop, evaluate, and productionize LLM-based features that make complex analysis simpler and faster for real users.
- Make it fast, reliable, and observable. Build systems that perform under load, recover gracefully, and are easy to monitor and improve.
- Set the standard. As an early engineer, you’ll shape engineering practices, influence architecture, and help define the culture of a company that values thoughtful work.

## QUALIFICATIONS

- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, with strong fundamentals in algorithms, systems design, and data structures.
- 5+ years of professional software engineering experience, ideally including time at a high-growth startup or technology company.
- Deep experience building and scaling full-stack systems—from cloud infrastructure and backend APIs to modern frontend applications.
- Proficiency with TypeScript, React, and Node.js.
- Solid understanding of distributed systems, data modeling, and performance optimization.
- Experience designing and maintaining systems on AWS (or equivalent cloud platforms), including CI/CD, observability, and infrastructure-as-code.
- Working knowledge of PostgreSQL, Redis, and modern workflow or job orchestration tools (e.g., Temporal, Inngest, Airflow).
- Comfort building with and around AI tools—integrating LLMs, retrieval pipelines, or structured evaluation workflows.
- Strong communication and collaboration skills; ability to operate autonomously in an early-stage environment and drive projects from idea to production.
- Excitement for joining a small, ambitious team and helping shape both the product and the engineering culture from day one.

## BENEFITS

- Medical, dental, and vision
- Unlimited PTO

## About Sonar

## Company Overview
- **One-liner**: Sonar provides an AI-powered due diligence platform for private market investors, enabling family offices and limited partners to evaluate opportunities faster and more thoroughly.
- **Entity Type**: Private (Bootstrapped / Unfunded)
- **Headquarters**: New York City, New York, United States
- **Founded**: 2024
- **Founders**: Kash Goudarzi, Ali Altamimi

## Core Business
- **Primary Industry**: Financial Technology (Fintech) – private markets, alternative investments, due diligence software.
- **Target Customers**: B2B – family offices, limited partners (LPs), private equity firms, and institutional investors.
- **Mission / Purpose**: Transform how limited partners evaluate opportunities, conduct due diligence, and make investment decisions using artificial intelligence.

## Products & Services
- **Sonar AI Diligence Platform**: SaaS tool that automates the collection, analysis, and summarization of private market deal documents, offering AI‑driven insights for LPs and family offices. Features include demo access and a proprietary report library.

## Market Standing
- **Valuation / Market Cap**: Not disclosed (bootstrapped, no funding raised).
- **Key Metric**: Total funding – $0 (unfunded as of July 2026). Annual revenue not publicly available.
- **Notable Investors / Partners**: None (self‑funded by founders). The company lists “Get a demo” and a blog as primary engagement channels.
- **Growth Signals**: Extremely early stage (2 employees as of Jan 2026). However, LinkedIn follower growth is +1296% year‑over‑year, indicating growing brand interest. The company is actively hiring its first engineering hires (Senior Software Engineer, Full Stack) – a strong signal of product development acceleration.

## Competitive Advantages
- **Niche focus on LP due diligence**: Most fintech tools target GPs or deal sourcing; Sonar specifically addresses the LP side – a less automated segment.
- **Founder‑led, lean execution**: With deep domain expertise (founders previously at Palantir and a sovereign wealth fund / investment bank), the team can move fast without institutional overhead.
- **AI‑first architecture**: Purpose‑built LLM and data‑engineering stack for private market documents, not a generic document‑AI wrapper.

## Strategic Focus
- **Product development**: Building out the core diligence platform and hiring engineering talent (Full Stack, Security) to accelerate feature delivery.
- **Go‑to‑market**: Content marketing (e.g., report on AI for LPs) and direct outreach to family offices. No sales team yet – the first SDR role is also posted.
- **Long‑term vision**: Become the standard due diligence operating system for the LP community.

## Why Work Here
- **Early‑stage impact**: As employee #3–5, you’ll shape architecture, product, and culture from day one.
- **Founders with real market experience**: Kash Goudarzi and Ali Altamimi bring backgrounds from Palantir Technologies and a Middle Eastern sovereign fund/investment bank – strong domain credibility.
- **Remote‑friendly with optional office**: The company lists a hybrid workspace (expected 3 days/week in NYC), but as a small startup, flexibility is likely high.
- **Culture**: Described as “AI diligence for family offices” – the team is small, technical, and research‑driven. Perks are not yet codified, but equity and ownership are almost certain.
- **Growth trajectory**: The company is pre‑revenue and unfunded, so joining carries risk but offers outsized upside if the product gains traction.

## Sources
1. [tracxn.com](https://tracxn.com/d/companies/sonar/__8knfFCu6Ea2V30Nk0ojwUhqxLyHyhXeeqnv5exqxlo4) – Company details, funding, employee count, competitors.
2. [linkedin.com](https://www.linkedin.com/company/sonar-us) – LinkedIn profile, follower growth, team updates.
3. [sonar.us](https://sonar.us/resources/harnessing-ai-for-lps) – Official site, AI for LPs report.
4. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/sonar-us/3e760f3d-e31b-4716-8be5-410fc8dbc8cf) – Active job post for Senior Software Engineer (Full Stack).

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