Sr. Software Engineer — Mobile (NGL) (Remote)

Mode Mobile builds products that allow millions of users to earn rewards from the content they love. They are seeking a Senior Software Engineer (Mobile) to help build, scale, and evolve their NGL platform, primarily focusing on mobile apps while also contributing to backend services and infrastructure.

Responsibilities:

• Design, implement, and ship full-stack features supporting messaging, engagement, notifications, creator workflows, safety, and monetization
• Contribute across mobile, web, and backend services/APIs
• Break down complex product requirements into clear technical designs and deliverables
• Contribute to React Native and Swift codebases
• Partner with Design and Product to deliver intuitive, performant user experiences
• Build and update APIs using Node.js / TypeScript, primarily within Firebase-based systems
• Design systems for high throughput, low latency, and global traffic spikes
• Improve system performance, observability, and operational excellence
• Participate in on-call rotations and lead production issue investigation and resolution when needed
• Proactively identify and address scalability bottlenecks through profiling, refactoring, and architectural improvements
• Partner with Product and Data to run experiments, A/B tests, and rapid iteration cycles
• Use metrics and experimentation results to inform engineering decisions
• Support new monetization models and feature launches through fast, reliable execution
• Collaborate closely with Product Managers, Designers, Data, and Growth partners
• Actively participate in and help drive technical design reviews and architecture discussions
• Mentor junior and mid-level engineers through thoughtful code reviews, pairing, and knowledge sharing
• Contribute to engineering standards, documentation, and best practices

Requirements:

• 5+ years of professional software engineering experience
• Direct experience working on consumer-facing products with high traffic and real-world performance constraints
• Strong experience with React Native and Swift mobile app development
• Experience with building APIs and backend services
• Proficiency in JavaScript / TypeScript
• Strong product-mindset
• Strong understanding of APIs, distributed systems, and data modeling
• Ability to ship quickly while maintaining system quality, security, and long-term maintainability
• Clear communicator who collaborates effectively across functions
• Alignment with our core values: Accountable, Action-driven, Caring, Curious, Thorough
• Experience with Firebase Functions and Firestore
• Experience working on social, messaging, creator, or community-driven platforms
• Familiarity with real-time systems, event-driven architectures, or moderation/safety systems
• Experience supporting experimentation frameworks, feature flagging, and A/B testing
• Exposure to high-scale platforms (millions of MAU)
• Experience using AI-assisted development tools (e.g., Cursor, Copilot)