Senior Software Engineer (Solutions Engineering)

• 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
• 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

Benefits

• Paid volunteer work
• Paid parental leave
• Work from home opportunities
• Medical, dental, and vision insurance, plus access to One Medical, Kindbody, and Teladoc
• Premium access to Headspace, ClassPass stipends, and webinars to support your overall wellness on topics like nutrition, budgeting, mindfulness, and more
• All Justworks offers include equity, and Justworkers can continue to earn more over time with promotions and tenure
• Extensive learning & development opportunities through workshops, ExecOnline, Udemy, and BetterUp coaching
• Apprenticeship program that supports internal movement and growth

• Skills and knowledge: You apply and continuously improve modern practices in API integrations, web applications, testing, observability, and developer experience
• Teamwork and communication: You build credibility in partner conversations and create durable written artifacts that help others move independently
• 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
• Influence and leadership: You lead through technical depth, clear recommendations, mentoring, and collaborative problem solving
• You model Justworks’ COGIS values—Camaraderie, Openness, Grit, Integrity, and Simplicity—in both the products you build and the relationships you create
• 5+ years of professional software engineering experience building and operating production systems
• Experience designing reliable integration behavior: retries, idempotency, asynchronous workflows, data contracts, monitoring, and incident and debugging practices
• Strong collaboration skills and comfort working across Engineering, Product, Partnerships and Sales, Support, and Security
• Evidence of delivering customer-facing or developer-facing experiences with a high bar for usability and documentation
• 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
• Clear technical writing and the ability to explain architecture and tradeoffs to engineers, product partners, and external developers
• 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