Full-Stack Software Engineer: Build Scalable APIs & UIs

Plaid Inc.; Seattle (WA); On-site; USD 110,000 - 190,000; Full time

Job summary

Plaid Inc. is seeking a versatile Fullstack Software Engineer in Seattle to design and build scalable backend services and user-facing frontend components.

You will work across the stack, delivering APIs and services with a focus on security and performance, while crafting delightful frontend experiences for millions of users. Collaborating with product managers, designers and engineers, you’ll ship reliable features, own your work, and contribute to architectural decisions.

Qualifications

• 2–4 years of full-stack development experience.
• Proficient in HTML, CSS, JavaScript and modern frameworks.
• Experience with Python, Java, Go, or Node.js.
• Experience with MySQL or relational databases.
• Experience with microservices and API design.
• Strong coding, testing, and debugging skills.

Responsibilities

• Design, develop and maintain both frontend and backend components.
• Develop APIs and services with a focus on scalability, security and performance (60–70% backend).
• Build frontend experiences using modern JavaScript frameworks (30–40%).
• Collaborate with product managers, designers and engineers to implement feature sets.
• Write clean, maintainable, efficient code and drive quality.
• Develop automated tests to ensure reliability and troubleshoot issues.

Skills

HTML/CSS/JS

Backend languages

Relational DBs

Microservices

API design

Coding & testing

Ownership

Customer empathy

Job description

Plaid Inc. is seeking a versatile Fullstack Software Engineer in Seattle to design and build scalable backend services and user-facing frontend components.

You will work across the stack, delivering APIs and services with a focus on security and performance, while crafting delightful frontend experiences for millions of users. Collaborating with product managers, designers and engineers, you’ll ship reliable features, own your work, and contribute to architectural decisions.