Avantos AI

FinTech

SeniorSoftwareEngineer,Full-Stack

$165–225k ~AI est. New York, New York, United States FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Software Engineer, Full-Stack at Avantos AI. Skills: Frontend, React, Next.js, Golang. Lead frontend architecture. Own React/Next.js interfaces”

Industry & Context.

FinTech
Problems you'll solve

Problem solving

What They're Looking For.

Must Have

8+ years engineering experience, Expert-level frontend depth, Proven ability design frontend systems, Solid backend competency, Deep understanding performance, Product and architecture instincts

Nice to Have

AI experience preferred, Fintech experience preferred, Data-intensive product experience, Shaping design systems preferred, Frontend platforms preferred, Reusable architecture patterns preferred, Edge rendering familiarity, Observability tooling familiarity, Event-driven architecture familiarity, Relational databases experience preferred

What You'll Do.

Lead frontend architecture

Own React/Next.js interfaces

Integrate with backend services

Contribute to Golang APIs

Collaborate with product

Collaborate with design

Influence architecture

Influence reliability strategy

Influence performance strategy

Influence engineering standards

Write high-quality code

How You'll Work.

Team & Collaboration

Product and design collaboration

Full 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 patte

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