Senior Software Engineer, Solutions Engineering (opens in a new tab)

Justworks, Inc.; New York (NY); On-site; USD 188,000 - 242,000; Full time

Job summary

Justworks, Inc. in New York City is seeking a Senior Software Engineer for Solutions Engineering to drive partner integrations, design robust API-driven experiences, and build developer-facing tooling and documentation.

You will own multi-surface journeys, collaborate with Public API Engineering, Product, Security, and Support to reduce developer friction, and mentor teammates while delivering observable, secure integrations.

Qualifications

• 5+ years of professional software engineering experience building and operating production systems.
• Strong experience consuming, integrating with, or building HTTP APIs; practical understanding of OAuth 2.0/OIDC, API authentication, tokens and scopes, webhooks, pagination, rate limits, and error handling.
• Experience with backend and/or full-stack web development in TypeScript, Go, Ruby, or Python.
• Experience designing reliable integration behavior: retries, idempotency, asynchronous workflows, data contracts, monitoring, and debugging practices.
• Clear technical writing and the ability to explain architecture and tradeoffs to engineers, product partners, and external developers.
• Evidence of delivering customer-facing or developer-facing experiences with a high bar for usability and documentation.
• Strong collaboration skills and comfort working across Engineering, Product, Partnerships and Sales, Support, and Security.

Responsibilities

• Independently lead technical discovery and solutioning for priority partner integrations, including API research, data mapping, authentication and authorization flows, architecture choices, implementation support, and launch readiness.
• Build and maintain high-quality developer ecosystem capabilities: portal experiences, documentation tooling, SDKs, sample apps, quickstarts, integration templates, and developer-support automation.
• Create reference implementations and reusable patterns for common integration needs such as OAuth, webhooks, retries, idempotency, error handling, and observability.
• Run technical working sessions with partners, translate complex requirements into clear decisions and action plans, and communicate platform boundaries accurately.
• Work closely with Public API Engineering and Product to identify developer friction, validate proposed API designs with realistic use cases, and deliver concise, evidence-backed feedback.
• Own a multi-surface developer journey or a portfolio of partner integrations from design through delivery, operational readiness, and iteration.
• Improve developer self-service by using support questions, integration telemetry, and qualitative feedback to prioritize documentation, an SDK feature, a product enhancement, or a platform request.
• Review designs and code; mentor teammates; and elevate engineering quality in both internal systems and partner-facing artifacts.
• Collaborate with Security, Support, and other stakeholders to ensure integrations are safe, observable, and supportable.

Skills

API integrations

HTTP APIs

TypeScript

Go

Python

Technical writing

Leadership

Communication

Tools

OpenAPI

OAuth 2.0/OIDC

SDKs

Documentation tooling

Webhooks

Job description

Senior Software Engineer, Solutions Engineering

New York, New York

Who We Are

At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people.

We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you.

We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team.

If this sounds like you, you’ll fit right in.

Who You Are

You are a senior product engineer who enjoys solving hard problems where software, APIs, and real developer workflows meet. You can take a partner's desired customer experience, understand both sides of an integration, and deliver a practical, supportable solution with the capabilities that are available today.

You bring strong API and web-platform fundamentals, communicate comfortably with external technical audiences, and care as much about the developer's path to success as the code itself. You are not satisfied with repeatedly solving the same problem by hand: you turn what you learn from partner work into better SDKs, documentation, tooling, and integration patterns.

What You Will Work On

• Independently lead technical discovery and solutioning for priority partner integrations, including partner API research, data mapping, authentication and authorization flows, architecture choices, implementation support, and launch readiness.
• Build and maintain high-quality developer ecosystem capabilities: portal experiences, documentation tooling, SDKs, sample apps, quickstarts, integration templates, and developer-support automation.
• Create reference implementations and reusable patterns for common integration needs such as OAuth, webhooks, retries, idempotency, error handling, and observability.
• Run technical working sessions with partners, translate complex requirements into clear decisions and action plans, and communicate platform boundaries accurately.
• Work closely with Public API Engineering and Product to identify developer friction, validate proposed API designs with realistic use cases, and deliver concise, evidence-backed feedback.
• Own a multi-surface developer journey or a portfolio of partner integrations from design through delivery, operational readiness, and iteration.
• Improve developer self-service by using support questions, integration telemetry, and qualitative feedback to prioritize what should become documentation, an SDK feature, a product enhancement, or a platform request.
• Review designs and code; mentor teammates; and elevate engineering quality in both internal systems and partner-facing artifacts.
• Collaborate with Security, Support, and other stakeholders to ensure integrations are safe, observable, and supportable.

How You Will Do Your Work

As a Senior Software Engineer, how results are achieved is central to success at Justworks. You will demonstrate:

• Good judgment: You balance partner urgency with long-term maintainability, security, and operational quality.
• Resourcefulness: You find a clear route through ambiguity, prototype thoughtfully, and reduce recurring work through reusable solutions.
• Teamwork and communication: You build credibility in partner conversations and create durable written artifacts that help others move independently.
• Influence and leadership: You lead through technical depth, clear recommendations, mentoring, and collaborative problem solving.
• Skills and knowledge: You apply and continuously improve modern practices in API integrations, web applications, testing, observability, and developer experience.

You model Justworks' COGIS values—Camaraderie, Openness, Grit, Integrity, and Simplicity—in both the products you build and the relationships you create.

Qualifications

• 5+ years of professional software engineering experience building and operating production systems.
• Strong experience consuming, integrating with, or building HTTP APIs; practical understanding of OAuth 2.0/OIDC, API authentication, tokens and scopes, webhooks, pagination, rate limits, and error handling.
• Experience with backend and/or full-stack web development in one or more modern languages such as TypeScript, Go, Ruby, or Python.
• Experience designing reliable integration behavior: retries, idempotency, asynchronous workflows, data contracts, monitoring, and incident and debugging practices.
• Clear technical writing and the ability to explain architecture and tradeoffs to engineers, product partners, and external developers.
• Evidence of delivering customer-facing or developer-facing experiences with a high bar for usability and documentation.
• Strong collaboration skills and comfort working across Engineering, Product, Partnerships and Sales, Support, and Security.

Nice To Have

• Experience maintaining an SDK, developer portal, API documentation, CLI, sample application, open source libraries, or an integration marketplace.
• Experience in regulated, high-trust, or data-sensitive domains.
• Experience with OpenAPI, API-client generation, event-driven systems, or workflow engines.
• Experience working directly with enterprise technical stakeholders.

Technologies and Experience

The base wage range for this position based in our New York City Office is targeted at $188,000 - $242,000 per year.

Actual compensation is based on multiple factors that are unique to each candidate, including and not limited to skill set, level of relevant experience, and specific work location. Salary ranges for positions based in other locations may differ based on the cost of labor in that location.

For more information about Justworks’ Total Reward Philosophy, including all of the perks and benefits we are proud to offer our team members, please visit Total Rewards @ Justworks .

Actual compensation is based on multiple factors that are unique to each candidate, including and not limited to skill set, level of relevant experience, and specific work location. Salary ranges for positions based in other locations may differ based on the cost of labor in that location.

For more information about Justworks’ Total Reward Philosophy, including all of the perks and benefits we are proud to offer our team members, please visit Total Rewards @ Justworks .

Diversity At Justworks

Justworks is committed to maintaining a workplace where diversity of identity, culture, and life experience is the norm and is celebrated authentically and respected consistently. Diversity in our work, our people, and our product drives creativity and innovation, entrepreneurial leadership and integrity, competitiveness, and collaboration throughout our business and in the market. We depend on our differences to make our team stronger, our workplace more dynamic, and our product accessible to all of our customers.

We’re proud to be an equal opportunity employer open to all qualified applicants regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital or familial status, disability, pregnancy, gender identity or expression, veteran status, genetic information, or any other legally protected status. Justworks is fully dedicated to providing necessary support to candidates with disabilities who may require reasonable accommodations. We also provide reasonable accommodations to employees based on their sincerely held religious beliefs, as well as for other covered reasons consistent with applicable federal, state, and local laws. If you're in need of a reasonable accommodation, please reach out to us at [e-mail] . Your comfort and success matter to us, and we're here to ensure an inclusive experience.

Just Be You

We’re committed to building a culture where everyone feels welcome, supported, and empowered to thrive. We believe that a wide range of perspectives, experiences, and identities strengthens our team and helps us create the kind of workplace—and world—we want to see.

We believe that in order to gather accurate demographic information we need to move beyond traditional questions about gender, race and ethnicity, and sexual orientation in favor of more inclusive and open-ended approaches. Of course, thinking around these areas is ever-evolving so, wherever applicable please feel free to select "I prefer to self-describe" and then elaborate so we can use your feedback to inform survey selections in the future.

Participation in this survey is completely optional. Any responses you choose to share will not be associated with your application and will not in any way be used in any hiring decision. We are collecting this information to deepen our understanding of our candidate pool and to continue to foster a welcoming and equitable hiring experience for all.

At Justworks, we are building an open, inclusive, and collaborative culture that values each person’s unique potential. We strive to help every Justworker grow with confidence in the collective service of our company, our community, and our customers.

We know that creating a truly inclusive workplace where everyone thrives is an ongoing journey—one that requires consistency, accountability, and shared commitment. We’re proud of the company we’re building together, one great Justworker at a time.