Senior Software Engineer, Time

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.

Are you passionate about system design and development? Do you have experience building, deploying, and maintaining large‑scale, distributed applications? Are you ready to take your skills to the next level and join a team of innovative self‑starters in a supportive, entrepreneurial environment?

As a Senior Software Engineer, you will be leveraging your experience working within a service‑oriented architecture. You will be responsible for separating data and functionality as necessary, and will demonstrate an understanding and use of automated testing as a productivity multiplier. You are eager to learn and passionate about improvement. You want to understand how systems work, and you think about how to make them work even better.

You will work closely with product managers, designers and other engineers to scope, design, and build new features and functionality. You will be working primarily on backend systems.

As a Senior Software Engineer for Time Lifecycle, you'll be responsible for unifying time tracking, time off, leave management, shift scheduling, and project tracking across PEO, ASO, and EOR into a single system, replacing three fragmented legacy platforms. At the core of this work is building a compliance engine that automatically handles overtime, labor law, and pay rules across 50+ jurisdictions.

• Collaborate with a cross‑functional team to design a next‑generation platform to unlock new business capabilities
• Take ownership of designing and implementing APIs, systems integrations and backend services
• Promote engineering excellence through technical leadership, knowledge‑sharing and mentorship
• Instate best‑practices observability and monitoring as “first principles” of all our services
• Keep extremely sensitive data compartmentalized and secure
• Perform other related duties as assigned

As a Senior Software Engineer, how results are achieved is paramount for your success and ultimately result in our success as an organization. In this role, your foundational knowledge, skills, abilities and personal attributes are anchored in the following competencies:

• Good judgment – the exercise of critical thinking, analyzing and assessing problems and implications, identifying patterns, making connections of underlying issues, understanding risks and developing mitigation strategies, and taking ownership of the outcome.
• Resourcefulness – taking a can‑do approach, even in the face of obstacles and constraints by assessing what’s in front of you and effectively and efficiently optimizing what you have.
• Teamwork and communication – putting our collective best together through documentation, collaboration, relationship‑building, listening, empathy, recruiting, and evangelism.
• Influence and leadership – fostering a community of knowledge‑sharing, collaboration, mentorship, and forward‑thinking.
• Skills and knowledge – the capacity to actively learn and apply specific domain knowledge, know‑how, and best practices to continually enhance and improve.

• Camaraderie – Day to day you can be seen working together toward a higher purpose. You like to have fun. You’re an active listener, treat people respectfully, and have a strong desire to know and help others.
• Openness – Your default is to be open. You're willing to share information, understand other perspectives, and consider new possibilities.
• Grit – You demonstrate grit by having the courage to commit and persevere. You’re committed, earnest, and dive in to get the job done well with a positive attitude.
• Integrity – Simply put, do what you say and say what you’ll do. You’re honest and forthright, have a strong moral compass, and strive to match your words with your actions while leading by example.
• Simplicity – Be like Einstein: “Everything should be made as simple as possible, but no simpler.”