Senior Full-Stack Architect for Fintech AI Platform

Aionia Group; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Aionia Group in San Francisco is searching for a Senior Software Engineer to shape the architecture of their fintech platform. You'll have significant ownership of technical solutions and will collaborate closely with the founders to define product direction.

The ideal candidate should have 5+ years of full-stack engineering experience and have worked in either big tech or early-stage startups. This role demands full autonomy, and you'll be mentoring engineers through best practices.

Qualifications

• 5+ years of experience in full-stack software engineering.
• Experience in leading teams and mentoring engineers.
• Strong skills in products scaling and architecture.

Responsibilities

• Design and build full-stack features across the Next.js frontend and backend API layer.
• Lead schema design, migrations, and safety rollouts in a high-stakes fintech environment.
• Mentor engineers through code reviews and architectural guidance.

Skills

Full-stack software engineering

TypeScript proficiency

Node.js experience

Next.js knowledge

React skills

Education

Degree from a top-20 CS program

Tools

Prisma

Event-driven tools

Job description

Aionia Group in San Francisco is searching for a Senior Software Engineer to shape the architecture of their fintech platform. You'll have significant ownership of technical solutions and will collaborate closely with the founders to define product direction.

The ideal candidate should have 5+ years of full-stack engineering experience and have worked in either big tech or early-stage startups. This role demands full autonomy, and you'll be mentoring engineers through best practices.