Sr Software Engineer

Mindbody, part of Playlist, provides technology that helps fitness and wellness businesses thrive and connects people with real-world experiences. The Senior Software Engineer will build scalable backend systems, lead complex technical projects, guide engineering practices, and mentor team members across the organization.

Responsibilities:

• Leading discussions with Product, Design, and QA to iterate on the design, implementation and deployment of our product
• Build, maintain, and own backend systems and applications
• Seeking different perspectives and soliciting honest feedback
• Practice engineering best practices (e.g., automated testing, code reviews, proper monitoring) while guiding others on their adoption, and contributing thoughtful, timely feedback during peer reviews
• Mentoring and leading through code reviews, teaching best practices, and conducting technical interviews for engineers and managers
• Leading retrospectives and incident postmortems for your squad
• Helping attract and retain talent by building community inside and outside the organization
• Care about our studio partners and want to help them grow their business
• Take delight in delighting our users

Requirements:

• You love to design robust and easy to use APIs and services taking ownership of technical decisions
• You're capable of leading complex technical projects with high levels of uncertainty, scale, and interdependencies—creating timelines, delegating tasks, and ensuring smooth launches
• You learn quickly and ramp up on new systems, languages, or frameworks with minimal guidance
• You're not afraid to ask questions early and often in unfamiliar territory
• You are a sought-after contributor in code reviews, helping elevate code quality through timely and constructive feedback
• You are an expert in one or more technical areas and are recognized within your team as a trusted source of insights and mentorship
• 8+ years' experience in programming large-scale SaaS products
• Experience building backend services with an object-oriented language such as C# or Java
• Experience designing and architecting backend services
• Experience Designing and working with Microservice architecture
• Experience with monitoring systems such as New Relic or Kibana
• Familiarity with SDLC and programming design patterns, and Agile methodology
• Experience reviewing new feature impact on an application and recognizing potential risks
• Detail-oriented, professional and possesses a positive work attitude
• Ability to communicate professionally both verbally and in writing
• Experience building high-performing, high-quality backend systems. Our codebase is diverse and includes .NET, C#, Java, JavaScript, Kotlin, Python, React, and Ruby, but we're less focused on experience with a specific language and more interested in your ability to build reliable, well-designed systems
• Strong understanding of SQL and relational databases
• AWS Cloud
• Data: PostgreSQL/MongoDB/DynamoDB, Redis, schema migrations, indexing, partitioning/sharding
• AI tooling: Claude Code/ Cursor/ Codex-style coding assistants; MCPs; agent/orchestration frameworks; safety harnesses
• Engineering Practices: automated testing, code reviews, CI/CD, observability, on-call, incident management — with AI-accelerated workflows where appropriate
• Experience building or operating payment flows end to end — authorization, capture, settlement, refunds, and reconciliation
• Hands-on integration with a payment gateway or PSP, including webhook-driven state handling
• Experience making payment operations safe to retry — idempotency, retries, and eventual consistency — so a request that fails partway through doesn't double-charge a customer
• Working knowledge of PCI DSS scope, tokenization, and handling sensitive payment data safely