Senior Software Engineer - Fullstack

SeattleFull-timesenior

EngineeringSoftware Engineer

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Overview

We believe that the way people interact with their finances will drastically improve in the next few years.

Technical Tools

EngineeringSoftware Engineer

We believe that the way people interact with their finances will drastically improve in the next few years. We’re dedicated to empowering this transformation by building the tools and experiences that thousands of developers use to create their own products. Plaid powers the tools millions of people rely on to live a healthier financial life. We work with thousands of companies like Venmo, SoFi, several of the Fortune 500, and many of the largest banks to make it easy for people to connect their financial accounts to the apps and services they want to use. Plaid’s network covers 12,000 financial institutions across the US, Canada, UK and Europe. Founded in 2013, the company is headquartered in San Francisco with offices in New York, Washington D.C., London and Amsterdam.

Plaid’s mission is to unlock financial freedom for everyone by making money movement and access to financial data simple and secure. As a Fullstack Software Engineer, you will design and build the systems and experiences that power how millions of people connect to their finances.

You will work across the stack, building scalable backend services and APIs while also crafting intuitive, high-quality frontend experiences that bring those systems to life. This role is ideal for engineers who enjoy switching between backend problem-solving and frontend user experience work, and who are excited to grow their impact across both.

You will collaborate closely with product managers, designers, and other engineers to ship products that are reliable, secure, and delightful to use. At Plaid, engineers take ownership early, contribute to architectural decisions, and see their work reach millions of users.

Build across the stack. Design, develop, and maintain scalable backend services and APIs, as well as intuitive, high-quality frontend applications that bring those systems to life.

Collaborate cross-functionally. Partner closely with product managers and designers to define requirements and deliver features that solve real customer problems.

Maintain high code quality. Write clean, maintainable, and well-tested code, and participate in code reviews and technical design discussions.

Test and debug. Build automated tests, monitor system performance, and troubleshoot issues in production environments.

Contribute to system design. Engage in hands-on coding and architectural decisions to ensure reliability, security, and scalability.

Grow the team. Support a strong engineering culture through mentorship, thoughtful reviews, and shared ownership of technical standards.

5+ years of software engineering experience with a track record of shipping production systems or features.

Experience building backend services using relational databases such as MySQL, and working with microservices or service-oriented architectures.

Strong working knowledge of HTML, CSS, JavaScript, and modern frontend frameworks or libraries, with comfort building user-facing experiences.

Solid system design, coding, and testing skills across both frontend and backend.

Proven ability to collaborate effectively with product, design, and other engineering partners.

Experience mentoring or supporting the growth of other engineers through reviews, guidance, or leadership.

Comfortable working across product, operations, and data teams to deliver end-to-end solutions.

Listing Details

Posted: March 2, 2026
First seen: March 23, 2026
Last seen: April 8, 2026

Posting Health

Days active: 15
Repost count: 0
Trust Level: 56%
Scored at: April 8, 2026

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Plaid

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Plaid is used by thousands of digital financial apps and services like Betterment, Expensify, Microsoft and Venmo, and by many of the largest banks to make it easy for consumers to connect their financial accounts with the apps and services they want to use.

Employees

350

Founded

2013

Domain

plaid.com

Jobs

View 96 jobs

View company profile

Salary

USD 190800–286800

per year