Senior Software Engineer - Fullstack

Plaid2 weeks ago

Location

New York

Type

Full Time

Salary

USD 180,000 – 250,000

Level

Senior

Role

Full Stack Engineer

Posted

Mar 2, 2026

Full TimeSenior

The role

Summary

Plaid is seeking a Senior Full Stack Software Engineer to help build scalable financial technology infrastructure. The ideal candidate will design and develop robust backend services and intuitive frontend applications that power financial connectivity across thousands of institutions, with a focus on creating secure and user-friendly financial data integration solutions.

What you'll do

Full Stack Development: Design and develop scalable backend services, APIs, and high-quality frontend applications that enable financial data connectivity

Cross-Functional Collaboration: Partner with product managers and designers to define requirements and deliver customer-centric features solving real financial technology challenges

Code Quality Management: Write clean, maintainable, and thoroughly tested code while actively participating in code reviews and technical design discussions

System Performance: Build automated tests, monitor system performance, and troubleshoot issues in production environments to ensure reliability and security

Architectural Contribution: Engage in hands-on coding and architectural decision-making to ensure system reliability, security, and scalability

Team Development: Support engineering culture through mentorship, providing thoughtful code reviews, and maintaining shared technical standards

What we look for

Technical

Backend DevelopmentExperience building backend services using relational databases like MySQL and working with microservices architectures

Frontend TechnologiesStrong working knowledge of HTML, CSS, JavaScript, and modern frontend frameworks/libraries

System DesignProven skills in system design, coding, and comprehensive testing across frontend and backend domains

Education

Degree PreferenceBachelor's degree in Computer Science, Software Engineering, or related technical field preferred

Experience

Professional ExperienceMinimum 5+ years of software engineering experience with a proven track record of shipping production systems

Collaborative ExpertiseDemonstrated ability to effectively collaborate with product, design, and engineering teams

MentorshipExperience in mentoring or supporting engineer growth through reviews, guidance, or leadership

Skills

Required skills

Programming LanguagesProficiency in JavaScript, HTML, CSS, with strong backend and frontend coding skills

Database TechnologiesExperience with relational databases, particularly MySQL, and microservices architectures

System DesignAdvanced understanding of scalable system design principles and implementation

Nice to have

Cloud PlatformsExperience with AWS, Google Cloud, or Azure cloud infrastructure

Financial TechnologyBackground or interest in fintech, financial data integration, or payment systems

Advanced FrameworksFamiliarity with React, Node.js, or modern JavaScript frameworks

Compensation & benefits

Salary

USD 180,000 – 250,000 (annual)

Stock options

Available

Benefits

Equity

Stock options for long-term financial growth

Health Insurance

Comprehensive medical, dental, and vision coverage

Professional Development

Opportunities for continuous learning and career advancement

Diverse and Inclusive Culture

Commitment to building an equitable and supportive work environment

Interview process

1
Initial Screening — HR phone interview to assess basic qualifications and cultural fit
2
Technical Assessment — Online coding challenge evaluating full stack development skills
3
Technical Interviews — Multiple rounds of in-depth technical interviews covering system design, coding, and problem-solving
4
Hiring Manager Interview — Discussion of team dynamics, role expectations, and candidate's experience
5
Final Review — Comprehensive evaluation of interview performance and team fit