Senior Full Stack Engineer — Avantos (via Remotesome)

About Avantos

Avantos is the AI-native operating system for client management, powering how financial institutions onboard, service, and grow client relationships. Trusted by leading financial institutions, Avantos unifies fragmented systems into a shared layer of context, where AI agents turn data into continuous insight and execution.

About Avantos

Avantos is building the industry’s first AI-native operating system for financial services, redefining how firms onboard clients, deliver advice, and manage core servicing workflows. Our platform unifies fragmented data, automates complex processes, and embeds intelligent decision-making across every step of the client lifecycle.

We partner with leading financial institutions and are scaling rapidly. We’re an execution-driven, design-obsessed, product-led team composed of founders and leaders from Wharton, MIT, top design programs, and prior unicorn SaaS companies.

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.

Requirements

• 3+ 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.

Nice to Haves

• 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.

Required Skills

• React — MORE_THAN_2_YEARS_PROFESSIONALLY
• Next.js — MORE_THAN_2_YEARS_PROFESSIONALLY
• Golang — MORE_THAN_2_YEARS_PROFESSIONALLY
• TypeScript — MORE_THAN_2_YEARS_PROFESSIONALLY

Benefits

• Fully Remote

Compensation

$120K – $180K/year

Timezone: UTC-8 to UTC+3