Sr Software Engineer - Backend

Classpass; United States; Remote; USD 151,000 - 200,000; Full time

Job summary

ClassPass is seeking a senior backend engineer to build and operate backend systems powering a large-scale SaaS platform. You will partner with Product, Design and QA to bring ideas to production with a reliable and scalable stack.

You’ll design robust services, promote testing and monitoring, and contribute to architecture decisions while ensuring high performance and clean interfaces across microservices.

Qualifications

• 8+ years of backend experience building and operating large-scale SaaS systems.
• Proficiency in Java, Kotlin, C#, JavaScript, and React.
• Experience designing microservices and backend services.
• Strong SQL and relational database skills.
• Familiarity with SDLC, design patterns, and Agile methodologies.
• Clear communication across teams and roles.

Responsibilities

• Build and evolve backend systems powering ClassPass, partnering with Product, Design, and QA to take ideas from concept to production.
• Deliver features from ideation through deployment with measurable outcomes.
• Design and develop robust backend services and APIs.
• Promote engineering excellence via automated testing, code reviews, and monitoring.
• Reduce unnecessary complexity while maintaining reliability and quality.
• Contribute to architecture decisions and cross-service interactions.
• Improve observability and resilience through proactive risk identification.

Skills

Java

Kotlin

C#

Javascript

React

Microservices

New Relic

Kibana

SQL

Agile

Communication

Tools

New Relic

Kibana

Job description

At Playlist, life's richest moments happen when people step away from screens to move, connect, explore, and play. We're building the definitive platform for intentional living, connecting people with inspiring experiences in fitness, wellness, and beyond. With popular brands like Mindbody and ClassPass, Playlist empowers businesses and individuals, making it effortless for aspirations to become actions. Join us in reshaping technology's role to foster meaningful, real-world connections.

ClassPass offers thousands of fitness and wellness experiences worldwide, helping people lead active, balanced lifestyles. Our platform makes discovering and enjoying activities simple, personalized, and joyful - whether it's fitness classes, self-care sessions, a healthy lunch, or a new adventure. Join us in shaping healthier, more vibrant communities around the globe.

The Role You’ll Play

• You’ll help build and evolve the backend systems that power ClassPass, partnering closely with Product, Design, and QA to take ideas from concept to production in a way that’s reliable, scalable, and grounded in real customer needs.
• Partner with Product, Design, and QA to deliver features from ideation through deployment, iterating based on feedback and outcomes
• Design and develop backend services and APIs that are robust, maintainable, and easy to work with
• Promote engineering excellence through automated testing, thoughtful code reviews, and effective monitoring
• Drive simplicity by reducing unnecessary complexity while maintaining reliability and quality
• Contribute to architecture decisions and help shape how microservices interact across a growing service-oriented ecosystem
• Strengthen operational health by identifying risks early and improving observability and resilience over time
• Lead with curiosity by seeking feedback, learning from diverse perspectives, and mentoring teammates
• Help foster a collaborative team culture that values autonomy, accountability, and impact

The Experience You’ll Bring

• Senior-level experience (8+ years) building and operating backend systems for large-scale SaaS platforms
• Proficiency in object-oriented languages such as Java, Kotlin, C#, and comfort working in a mixed stack
• Experience architecting and designing backend services in a microservices environment
• Familiarity with monitoring tools like New Relic or Kibana, and a proactive approach to identifying and mitigating system risks
• Solid understanding of SDLC, design patterns, and Agile methodologies
• Strong SQL and relational database skills, with attention to performance and maintainability
• Clear communicator who collaborates effectively across roles and working styles
• Motivation to deliver meaningful solutions, keep learning, and support others’ growth

Technologies you’ll likely be working with:

• Backend languages: Java, Kotlin, C#, Javascript, React
• Architecture: microservices, service-to-service integrations
• APIs: backend services and APIs
• Data: SQL, relational databases
• Observability: New Relic, Kibana
• Engineering practices: automated testing, code reviews, monitoring and alerting
• It is the Company's intent to pay all Team Members competitive wages and salaries that are fair and equitable.
• Actual compensation packages are based on several factors unique to each candidate, including skill set, depth of experience, certifications, and work location.
• The goal of Company's compensation program is to be transparent, attract potential employees, meet the needs of all current employees, and encourage Team Members to stay with our organization.
• The base salary range for this position in the United States is $151,000 to $200,000.
• The total compensation package may also include a performance bonus, benefits, and other applicable incentive compensation plans.

• The Company is an Equal Opportunity Employer.
• We highly value diversity at our company and encourage people of all different backgrounds, experiences, abilities and perspectives to apply.
• We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or other protected characteristics.