Principal Software Development Engineer - Marketplace Platform

ZipRecruiter; Mountain View (CA); On-site; USD 248,000 - 296,000; Full time

Job summary

A leading company in Mountain View seeks a Principal Software Development Engineer to design and maintain high-performance APIs for their eCommerce marketplace. This role involves leading the transition to modular APIs, enhancing system flexibility, and mentoring engineers. Join a vibrant team dedicated to safeguarding online identities and driving innovation in a collaborative office environment.

Benefits

Comprehensive medical, dental, vision insurance

401(k) with company match

Unlimited paid time off

Parental leave

Learning and development benefits

Employee assistance program

Qualifications

• 15+ years of software development experience with SaaS platforms and APIs.
• 12+ years of experience in RESTful API design, GraphQL, or microservices architecture.

Responsibilities

• Design, build, and maintain API-first services for ID.me's Marketplaces Platform.
• Lead the decomposition of the ID.me Shop monolith into scalable, modular APIs.
• Establish best-in-class API standards and optimize query performance.

Skills

Ruby

Java

Go

Python

JavaScript

Problem Solving

Education

Bachelor's or Master's degree in Computer Science

Tools

AWS

GCP

Azure

SQL

NoSQL

Kafka

RabbitMQ

SQS

Job description

Job DescriptionJob DescriptionCompany Overview

ID.me is the next- digital wallet that simplifies how individuals securely prove their online. Consumers can verify their with ID.me once and seamlessly login across websites without having to create a new login and verify their again. Over 140 million users experience streamlined login and verification with ID.me at 20 federal agencies, 44 state government agencies, and 66 healthcare organizations. More than 600 consumer brands use ID.me to verify communities and user segments to honor service and build more authentic relationships. ID.me's technology meets the federal standards for consumer authentication set by the Commerce Department and is approved as a NIST 800-63-3 IAL2 / AAL2 credential service provider by the Kantara Initiative. ID.me is committed to "No Left Behind" to enable all people to have a secure digital . To learn more, visit https://network.id.me/.

Principal Software Development Engineer - Marketplace Platform

Location: Mountain View, CA (4-5 days/week in office) [relocation if needed]

ID.me is transitioning to a platform-first approach, building scalable APIs and data-driven services that power our eCommerce marketplace, developer ecosystem, and partner integrations. As a Principal Software Development Engineer on the Marketplaces Platform team, you will play a key role in designing and maintaining high-performance private and public APIs that drive revenue, support merchants, and protect users from fraud.

This team will decompose the monolithic ID.me Shop into modular, service-oriented APIs, enabling faster innovation, improved developer experience, and seamless partner integrations. Our goal is to set a new standard for API quality, documentation, and service interfaces, ensuring clear contextual boundaries across teams for independent development and better communication.

This role is ideal for an API-first engineer who thrives on platform thinking—building data products without a UI that empower products and external developers.

Key Responsibilities

• Design, build, and maintain API-first services for ID.me's Marketplaces Platform, supporting eCommerce merchants, government services, and fraud prevention.
• Lead the decomposition of the ID.me Shop monolith into scalable, modular APIs, improving system flexibility and maintainability.
• Establish best-in-class API standards—clear versioning, intuitive service interfaces, robust documentation, and developer-friendly tooling.
• Develop APIs for offers, attribution tracking, paid placements, scam/fraud prevention, and Shop analytics, ensuring scalability and performance.
• Collaborate with internal teams and external partners to create seamless API experiences that drive adoption and engagement.
• Raise the bar on API design—implement authentication, versioning, rate limiting, and encryption best practices.
• Optimize query performance and data flows, ensuring API efficiency when interacting with stores, marketplaces, and government services.
• Mentor engineers and contribute to establishing engineering excellence, reinforcing platform-first thinking across teams.

Required Qualifications

• 15+ years of software development experience with SaaS platforms and APIs.
• 12- years of experience in any of RESTful API design, GraphQL, or microservices architecture.
• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.

Qualifications

• Experience with developer-first products, creating intuitive API documentation, SDKs, and sandbox environments.
• Strong proficiency in Ruby, Java, Go, Python, or JavaScript (Node.js) for backend development.
• Experience with platform-first architectures, enabling multiple teams to build on shared API-driven foundations.
• Deep understanding of API security best practices (OAuth, JWT, encryption, vendor authentication).
• Hands-on experience with cloud platforms (AWS, GCP, or Azure) and distributed systems.
• Experience working with databases (SQL and NoSQL), caching, and event-driven systems (Kafka, RabbitMQ, SQS).
• Strong problem-solving skills, with a focus on observability, reliability, and API performance.
• Proven track record in breaking down monolithic applications into microservices or API-first architectures.
• Familiarity with eCommerce integrations, paid placements, and attribution tracking.
• Prior experience working with vendor integrations and optimizing service interfaces.
• Passion for improving developer experience, including automation, API governance, and CI/CD.

Why Join ID.me?

At ID.me, we are dedicated to safeguarding online identities, and we firmly believe that our collective efforts will drive positive change worldwide. Working together in an office setting cultivates our vibrant culture, enabling professional advancement, mentorship, collaboration, innovative strides, and authentic connections. This role requires on-site presence 4-5 days per week, based in our office in Mountain View, CA.

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The annual base salary listed does not include a company bonus, incentive for sales roles, equity and benefits which will be determined based on experience, skills, education, relevant training, geographic location and role.

ID.me offers comprehensive medical, dental, vision, health savings account, flexible spending accounts (medical, limited purpose, dependent care, commuter benefit accounts), basic and voluntary life and AD&D insurance, 401(k) with company match, parental leave, ability to participate in unlimited paid time off subject to the terms and conditions of the PTO policy, including 8 company wide holidays, short and long-term insurance, accident and critical illness insurance, referral bonus policy, employee assistance program, pet insurance, travel assistant program, wellbeing and childcare discounts, benefit advocates, and a learning and development benefit.

The above represents the anticipated total rewards package for this job requisition. Final offers may vary from the amount listed based on qualifications, professional experiences, skills, education, relevant training, geographic location, and other job related factors.

Mountain View, CA Pay Range$248,750—$295,926 USD

ID.me maintains a work environment free from discrimination, where employees are treated with dignity and respect. All ID.me employees share in the responsibility for fulfilling our commitment to equal employment opportunity. ID.me does not discriminate against any employee or applicant on the basis of , ancestry, , family or medical care leave, or expression, genetic information, marital status, medical condition, , physical or mental , political affiliation, protected veteran status, , , (including ), , or any other characteristic protected by applicable laws, regulations and ordinances. ID.me adheres to these principles in all aspects of employment, including recruitment, hiring, training, compensation, promotion, benefits, social and recreational programs, and discipline. In addition, ID.me's policy is to provide reasonable accommodation to qualified employees who have protected disabilities to the extent required by applicable laws, regulations and ordinances where a particular employee works. Upon request we will provide you with more information about such accommodations.

Please review our Privacy Policy, including our CCPA policy, at id.me/privacy. If you provide ID.me with any personally identifiable information you confirm that you have read and agree to be bound by the terms and conditions set out in our Privacy Policy.

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