Software Engineer II, Platform Core Services

Reporting to Senior Engineering Manager, Platform Core Services, you will help build and maintain the shared platform services that our client engineering teams use to deliver solutions for their customers and end users. The Platform Core Services team owns foundational capabilities such as Auth, User Sync, Composer, and other shared services. This is high-leverage work: when we get an abstraction right and manage it in one place, we lower the cost of software delivery, make systems more stable, and keep security consistent for every team that depends on it., * Write, review, and deliver production-ready code with a focus on correctness, clarity, and maintainability.

• Participate actively in code reviews-giving constructive feedback and leveraging review comments as a learning opportunity.
• Use AI tools (e.g., Claude, Copilot) to explore implementation approaches, accelerate development, generate documentation, and augment code reviews-providing sufficient context to get high-quality, system-aware outputs, and always critically reviewing AI-generated code before shipping.
• Contribute to architectural discussions and tech debt prioritization within your team.
• Proactively clarify requirements to remove ambiguity; identify and mitigate risks before they become blockers.
• Deliver features independently on well-scoped work; support larger multi-person projects with consistent execution.
• Collaborate with product managers and designers to break down complex requirements into manageable, shippable units.
• Advocate for high engineering standards including test coverage, documentation, and observability.
• Participate in an on-call rotation to support system reliability and respond to production issues.
• Identify and resolve root causes across code domains; add logging, alerting, and monitoring as a standard part of your work.
• Build and evolve shared services (Auth, User Sync, Composer) and the infrastructure and APIs beneath them, so client teams integrate instead of rebuilding.
• Own shared systems that fall between teams: learn, document, and stabilize them, and roll out changes safely through versioning, backward compatibility, and deprecation paths.
• Partner with client teams to turn repeated patterns into shared components with clear contracts, and measure adoption to guide what we evolve next.

What success looks like in this role

• Delivery & Quality - Deliver projects on time, within scope, and with high stakeholder satisfaction. Maintain high system uptime and low defect rates through strong testing and observability practices.
• Independent Execution - Complete well-scoped tasks independently, resolve issues proactively, and accurately track your own work. Estimates are improving in accuracy sprint over sprint.
• AI-Augmented Engineering - Regularly use AI to assist with features, debugging, documentation, and test creation-iterating on prompts to improve output quality, and always validating results against team standards.
• Collaboration - Partner effectively with product, design, data, and engineering teammates, contributing meaningfully to team goals and alignment.
• Engineering Excellence - Contribute to improved team velocity through planning, estimation, and delivery best practices. Continuously seek out new techniques-including AI capabilities-to improve engineering outcomes.
• Code Quality - Write code that is tested, secure, and easy for others to understand and maintain.

• 3-5 years of professional software development experience
• Proficiency with Ruby on Rails or Python, Postgres, GraphQL, React, and TypeScript, Datadog, RSpec Framework,
• Experience building full stack applications
• Actively uses AI coding tools (e.g., Claude, Copilot) to assist with features, debugging, and test creation-iterates on prompts to improve output quality and critically reviews all AI-generated code for correctness, security, and standards compliance
• Ability to work independently and collaboratively in a fast-paced, ambiguous environment
• Experience working in cross-functional Agile teams
• Strong problem-solving skills with a focus on clean, maintainable code and attention to detail
• Embraces writing well-designed tests that accompany all code

• Health, Dental, Vision benefits start on your first day at Spring. You and your dependents also receive access to One Medicalaccounts HSA and FSA plans are also available, with Spring contributing up to $1K for HSAs, depending on your plan type.
• Employer sponsored 401(k) match of up to 2% for retirement planning
• A yearly allotment of no cost visits to the Spring Health network of therapists, coaches, and medication management providers for you and your dependents.
• We offer competitive paid time off policies including vacation, sick leave and company holidays.
• At 6 months tenure with Spring, we offer parental leave of 18 weeks for birthing parents and 16 weeks for non-birthing parents.
• Access to Noom, a weight management program-based in psychology, that’s tailored to your unique needs and goals.
• Access to fertility care support through Carrot, in addition to $4,000 reimbursement for related fertility expenses.
• Access toWellhub, which connects employees to the best options for fitness, mindfulness, nutrition, and sleep in one subscription
• Access to BrightHorizons, which provides sponsored child care, back-up care, and elder care
• Up to $1,000 Professional Development Reimbursement a year.
• $200 per year donation matching to support your favorite causes.

Spring Health is a global mental health company on a mission to eliminate every barrier to mental health. We’re building a world where getting support is simple, personal, and built around the person, so care can continue through every job, move, health plan, and life stage.

Our AI-native platform helps us deliver personalized support across self-guided tools, coaching, therapy, medication management, and specialty care. With outcomes independently validated by JAMA Network Open and the Validation Institute, Spring Health reaches more than 170 million people worldwide through leading employers, health plans, and partners.

As an AI-native company, we believe technology should expand the reach, quality, and humanity of care. Every Spring Health team member is expected to use AI tools thoughtfully, apply human judgment to AI outputs, and keep building AI fluency in ways that support their role and our mission.