Senior Software Engineer at 15five

15Five is the AI-powered performance management platform built for business impact. 15Five’s AI-powered all-in-one people management system is easy to use,
delivers effortless insights, and enables managers to lead with impact so that companies and their people can thrive. Within the flow of work, HR leaders are empowered with data-driven insights and recommendations while managers are transformed into change-makers, accelerating engagement, performance, and retention. 15Five combines generative AI, custom analytics, and human-centered principles within a complete platform, including 360° performance reviews, engagement surveys, goal tracking, manager coaching and training, and ongoing feedback tools like guided 1-on-1s and check-ins. A career at 15Five is the chance to have high impact in a fast paced, remote startup environment that operates with focus, urgency, and accountability. Every role and every hire meaningfully impacts our trajectory. We’re a high-performance, high-purpose team that gives you the chance to Build the Future of Work. We run on High Standards and High Support — holding a high bar for results, ownership, clarity, and disciplined execution, while investing in manager enablement, skill development, and whole-person care. We are committed to a No B.S. environment, meaning we anchor ourselves in truth, course-correct in real time, and expect people to lean into direct conversations. We are focused on ensuring every 15Fiver can Work in the Future and that starts with proactively using AI across all aspects of your role to increase leverage, speed, and impact. If you're energized by a fast pace, high standards, and high accountability for yourself and others, you'll thrive here and we encourage you to apply. Senior Software Engineer Remote (US) | Reports to: Sr. Director of Engineering About the Role We’re looking for a Senior Software Engineer to help build and evolve 15Five’s Data Intelligence Platform—the foundation that powers our AI, agentic capabilities, and data‑driven product experiences. You’ll work across a modern tech stack, partner closely with Data Science and Product Engineering, and help define the standards, tooling, and infrastructure that enable our next generation of AI‑powered features. Areas of Ownership • Build and evolve 15Five’s Data Intelligence Platform • Partner across Data Science and Product Engineering • Elevate engineering quality and culture What You’ll Do • Build and enhance the Data Intelligence Platform, including pipelines, tooling, and agentic infrastructure. • Partner with Data Scientists to develop AI platform capabilities, complex models, and agentic applications. • Own and improve existing autonomous agents; design, orchestrate, and deploy new ones across the product. • Implement best practices across software, data, and ML/AI engineering to strengthen our agentic ecosystem. • Build data models and pipelines that support the entire engineering organization. • Design scalable data platform features for ingestion, storage, validation, governance, monitoring, and ETL/reverse‑ETL. • Use AI‑assisted code generation effectively while ensuring code quality, security, and performance. • Review code and architecture, contribute to documentation, and elevate engineering standards. • Bring a product mindset to planning, helping shape vision, goals, and roadmap. What You Bring • 5+ years of software development experience with strong foundations in algorithms, data structures, and design principles. • Proficiency in languages used for data and AI (e.g., Python, Java, C++, Go, Scala) plus SQL and relational/NoSQL databases. • Solid understanding of data engineering concepts: ETL pipelines, data modeling, schema design, enrichment, and governance. • Experience with cloud‑native big‑data environments and optimizing for cost and performance. • Familiarity with Python frameworks (Django is a plus). • Experience or interest in MLOps, AI model development, or knowledge graphs. • Strong communication skills and comfort collaborating across engineering, product, design, and customer‑facing teams in a remote setting. Nice to Have • Experience with agentic systems or autonomous agents. • Exposure to DBT, Airflow, Snowflake, Django, or similar technologies. • Background in HR tech, people systems, or performance management. Work ScheduleFully Remote, Monday–Friday. Typical hours align with 7/8am–3/4pm PT or 9am–5pm ET, with flexibility. Some early‑morning meetings may be required to support cross‑time‑zone collaboration. We offer amazing benefits that align with our values and culture at 15Five. Your Health & Wellbeing Medical, dental, vision with 15Five cost subsidy Employer paid Short-Term, Long-Term Disability, and Term LifeFamily planning support with enhanced medical plans and consultation programs Inclusive Benefits Stipend Access to mental health and wellness resources Your Life Flexible Time Off Program Generous paid leave for new parents Military leave Paid Company Holidays Sabbatical Program Your Future 401K with 4% Matching after 6 months Your Work Life Remote work Work with experts in leadership, culture, and personal development For more information see: Our Mission, Vision, & Values -[Upgrade to PRO to see link] Our People and Culture -[Upgrade to PRO to see link] Our Personal & Professional Development Resources -[Upgrade to PRO to see link] Reading over the role description and feeling like you don’t check every box? That’s okay; if you think you have what it takes but don’t necessarily meet all the criteria, please apply—you could be exactly who we are looking for! 15Five follows equitable hiring practices. Our compensation programs are designed to attract, motivate, and retain talented employees who are highly engaged, high performing, and have an exceptional impact on the business and our customers. The salary range displayed on each job posting reflects the target for new hire salaries for the role across all US locations. Within the range, individual pay is determined by budget allocated for the role and additional factors, including job-related competencies and skills, experience, and relevant education or training. Please note that the compensation details listed in US job postings do not reflect added total compensation including equity or benefits. In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.