Senior Fullstack Engineer

7Seventy; United States; Hybrid; USD 190,000 - 230,000; Full time

Job summary

7Seventy is seeking a Senior Fullstack Engineer with a strong frontend focus to own React/TypeScript surfaces used in payments dashboards, reporting, and embedded experiences. You will contribute to Python APIs and data integrations, shaping frontend architecture and engineering standards.

You will work closely with product, design, backend, operations, compliance, and payments stakeholders to scale reliable fintech platforms and internal systems while mentoring peers and driving design-system

Qualifications

• 5+ years of software engineering with frontend ownership.
• Strong React and TypeScript as primary tech.
• Backend API work with Python and REST APIs.
• Experience with SQL/NoSQL and cloud platforms.
• Familiarity with CI/CD and code reviews.

Responsibilities

• Own frontend architecture and React/TypeScript interfaces.
• Contribute across the stack, including Python APIs.
• Define frontend standards and mentor engineers.
• Support internal tooling and dashboards for finance/payments.

Skills

React

TypeScript

frontend architecture

Python APIs

REST APIs

SQL

NoSQL databases

Google Cloud Platform

CI/CD

Education

Bachelor's degree in CS/Engineering or equivalent

Tools

Git

CI/CD pipelines

Testing frameworks

Job description

Experience: 5+ years of software engineering experience with significant frontend ownership

Core Areas: React, TypeScript, frontend architecture, Python APIs, REST APIs, SQL and NoSQL databases, Google Cloud Platform, CI/CD

Compensation: $190,000–$230,000 per year, plus equity

Travel: Up to approximately 15% annually

About the Role

This opportunity is for a Senior Fullstack Engineer with a strong frontend focus and the ability to contribute independently across the stack. The role owns React and TypeScript product surfaces used in payments dashboards, reporting, embedded experiences, and internal tooling, while also contributing to the Python APIs and data integrations that support those applications.

The position combines frontend architecture, full-stack feature ownership, API development, system design, financial workflow UX, and engineering standards. The engineer will work closely with product, design, backend engineering, operations, compliance, and payments stakeholders while helping scale reliable financial technology products and internal systems.

What You'll Do

Own the Frontend Architecture

• Lead frontend architecture decisions involving component design, state management, performance, and scalability.
• Design and implement React and TypeScript interfaces for payments dashboards, reporting surfaces, and embedded product experiences.
• Translate complex financial workflows into intuitive, accessible user interfaces.
• Help establish and scale the frontend platform through shared component libraries, tooling, and reusable engineering patterns.

Contribute Across the Stack

• Build and extend Python APIs that support frontend features.
• Collaborate with backend engineers on data contracts, API design, and integration patterns.
• Participate in system design discussions and bring a product-quality perspective to backend implementation decisions.

Drive Frontend Standards

• Establish and maintain frontend best practices, component libraries, and design patterns for a growing engineering team.
• Mentor engineers and conduct code reviews with a focus on quality, consistency, and maintainability.
• Partner with product and design to refine requirements and challenge unclear scope or user experience decisions when needed.

Support Internal Tooling

• Build and improve internal tools used by operations, compliance, and payments teams.
• Maintain high standards for reliability and usability across customer-facing and internal product surfaces.

Qualifications

Required Qualifications

• 5+ years of software engineering experience with significant frontend ownership.
• Strong production experience with React and TypeScript as the primary technologies for this role.
• Ability to build and extend backend APIs independently; Python experience is preferred.
• Demonstrated ability to own features end to end, from the data layer through the user interface.
• Experience working collaboratively in shared codebases with an established code review culture.
• Ability and willingness to travel up to approximately 15% annually.
• Strong knowledge of React, TypeScript, component architecture, and state management.
• Backend experience with Python, REST APIs, and web frameworks.
• Experience working with SQL and NoSQL databases.
• Experience with Google Cloud Platform or a similar cloud platform.
• Experience with Git, CI/CD pipelines, and testing frameworks.

Preferred Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Experience building data visualizations, charts, dashboards, reporting tools, or analytics surfaces.
• Experience with financial or fintech products, including dashboards, reporting, or transaction workflows.
• Experience owning a design system or shared component library.
• Experience building internal tooling for operations or compliance teams.
• Familiarity with domain-driven design or clean architecture patterns.
• Remote-first work environment with flexible working arrangements.
• Opportunity to work on high-scale payments infrastructure and complex financial workflows.
• Direct ownership and impact within a small, high-output engineering team.
• Opportunity to shape frontend engineering practices, architecture, and team standards as the platform scales.
• Professional growth opportunities related to compliance and risk management.

Recruitment notice: all communication only happens from authorized email addresses ending [e-mail]. We never ask for payments or sensitive documents. Suspect a scam? Email [e-mail]