---
title: 'Senior Software Engineer, Full-Stack at Avantos AI'
canonical: 'https://feeny.ai/job/senior-software-engineer-full-stack-avantos-ai-new-york-rzkqtb6tbcrn'
type: 'job'
last_seen: '2026-09-10'
---

# Senior Software Engineer, Full-Stack at Avantos AI

- **Company:** Avantos AI
- **Location:** New York, NY
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-05-27
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.ashbyhq.com/avantos/bdbf36bd-44a7-4969-a3a6-d0837dc6e643

## Job description

Company Overview Avantos AI is shaping the future of client relationship management by reimagining it through the lens of artificial intelligence. We are building the industry’s first AI-native operating system for financial services, transforming how firms onboard clients, deliver advice, and manage critical servicing workflows. Our platform consolidates fragmented data, automates complex processes, and embeds intelligent decision-making throughout every stage of the client lifecycle. Supported by Bessemer Ventures and MIT’s investment arm, our team comprises execution-focused, design-driven, product-centric founders and leaders from Wharton, MIT, top design programs, and unicorn SaaS companies. We move swiftly, tackle deep industry challenges, and build technology that empowers users to take charge of their workflows. If you thrive on client impact, innovative product design, and tackling complex problems, Avantos is the place for you.

## About the Role

We’re looking for a Senior Full Stack Engineer with a strong frontend core — someone who thinks in React/Next.js first, but is fully capable of contributing at the backend layer using Golang when needed.

## Responsibilities

- Lead frontend architecture and experience design — owning React/Next.js interfaces end-to-end, with a focus on performance, UX, and scalability.
- Integrate cleanly with backend services and contribute to Golang APIs when needed — not just consume them.
- Collaborate tightly with product and design on experience decisions — not just implementation.
- Influence architecture, reliability, performance strategy, and engineering standards.
- Write high-quality, clean, well-structured code — and enforce that quality in reviews.
- Act as a technical force multiplier — mentoring, unblocking, and setting the technical bar.

## Minimum Qualifications

- 8+ years of engineering experience building production web applications.
- Expert-level frontend depth — React + Next.js mastery (streaming, modern rendering patterns, state strategy).
- Proven ability to design high-performance, scalable, modern frontend systems with clarity and intentionality.
- Solid backend competency — ideally Golang, but strong API design fluency is required.
- Deep understanding of performance, caching, hydration, code splitting, bundling, deploy strategy, DX/UX tradeoffs.
- Product and architecture instincts — you care about what should be built, not just how.

## Preferred Qualifications

- AI, fintech, or data-intensive product experience.
- Experience shaping design systems, frontend platforms, or reusable architecture patterns.
- Edge rendering, observability tooling, or event-driven architecture familiarity.
- Experience with relational databases (Postgres)

## What We Offer

- Competitive compensation + meaningful equity.
- Opportunity to define the technical foundation of a greenfield AI platform.
- A culture optimized for engineering excellence, focus, deep work, and ownership — not ticket factories.

## About Avantos AI

## Company Overview
- **One-liner**: Avantos is the AI-native operating system for client management, powering how financial institutions onboard, service, and grow client relationships.
- **Entity Type**: Private (Series A – $25M led by Bessemer Venture Partners, with total funding of $44.2M)
- **Headquarters**: New York, NY, USA
- **Founded**: 2024
- **Founders**: Bassam Chaptini (Co-Founder & CEO) and Rabih Ramadi (Co-Founder & CEO)

## Core Business
- **Primary industry**: Financial services technology (Fintech) – client management software for banks, wealth managers, and other financial institutions.
- **Target customers**: B2B, Enterprise (financial institutions seeking to modernize onboarding, servicing, and relationship management).
- **Mission**: To build the operating system for the next generation of client management, unifying fragmented systems into a shared layer of context where AI agents turn data into continuous insight and execution.

## Products & Services
- **Avantos Platform**: AI-native operating system that integrates with existing CRMs, custodians, and core systems. It includes customizable workflows for onboarding and servicing, a knowledge graph that unifies client data, and AI agents that automate tasks such as data collection, document extraction, and follow-ups. Key modules: Onboarding, Servicing, Relationship Management, Upsell & Growth, Operations & Control.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Total funding of $44.2M (Seed $19.2M in two rounds, Series A $25M in February 2026)
- **Notable Investors/Partners**: Bessemer Venture Partners (Series A lead), E14 Fund (Seed lead), plus other institutional investors.
- **Growth Signals**: Headcount grew 171.4% year-over-year (LinkedIn reports 33 employees; Built In reports 38). Recent $35M Series A announcement. Trusted by leading financial institutions (e.g., SEI as a client partner). Active hiring across engineering, product, and client solutions roles.

## Competitive Advantages
- **Knowledge graph** that layers on top of existing systems, creating a single system of context for humans and AI.
- **AI-native agentic workflows** that reduce manual monitoring, handoffs, and decision latency.
- **Enterprise-grade security** – SOC2 certified, built for compliance and auditability from the ground up.
- **No-replacement integration** – works with existing CRMs and core systems, lowering switching costs for financial institutions.
- **Repeat fintech founders** with deep expertise in AI, financial services, and enterprise software.

## Strategic Focus
- Expand platform adoption across financial institutions, scaling AI capabilities for onboarding and ongoing client servicing.
- Continue to build out the engineering, product, and client solutions teams to support growth.
- Deepen integrations with custodians and core systems to become the standard operating layer for client management.

## Why Work Here
- **Culture**: “Massive influence” – employees directly shape client success and product roadmap. Strategic ownership of core enterprise clients. Work alongside founders, engineers, designers, and product leaders. Career acceleration into leadership roles.
- **Remote/Hybrid**: HQ in New York, NY (in-office for most roles). Some positions (e.g., Senior DevOps Engineer) are listed as fully remote. Hybrid options available for certain roles. Offices also in Novi Sad (Serbia), with team members in the UK and Brazil.
- **Notable perks**: Mission-driven impact redefining financial services through intelligent automation. Opportunity to work at the intersection of AI, enterprise software, and financial services. Competitive compensation and growth opportunities.

## Sources
1. [avantos.ai](https://avantos.ai/)
2. [avantos.ai/company](https://avantos.ai/company)
3. [builtin.com](https://builtin.com/company/avantos-ai)
4. [linkedin.com](https://www.linkedin.com/company/avantos-ai)
5. [avantos.breezy.hr](https://avantos.breezy.hr/)

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