Senior Backend Engineer, Consumer Growth

This is a fully remote position, open to applicants in Portugal.

📋 Description

• Develop services that assist users in discovering Sword products, transitioning to paying members, realizing value, and maintaining engagement.

• Design, construct, and manage backend services and APIs that support the consumer experience across web, Android, and iOS platforms.

• Create subscription and payment functionalities, which encompass checkout integrations, linking purchases to accounts, managing entitlements, renewals, and subscription lifecycle events.

• Facilitate targeted experiences and controlled experiments using feature flags, cohort targeting, and dependable experiment assignment.

• Implement event instrumentation and integrations for acquisition sources, funnel performance monitoring, and analysis of customer behavior.

• Collaborate with Product and Data teams to clarify hypotheses, establish measurement criteria, and evaluate outcomes post-launch.

• Enhance performance and dependability across essential processes, with an emphasis on payment accuracy, data integrity, and recovery from failures.

• Take ownership of changes throughout the stages of design, implementation, testing, deployment, monitoring, and iteration.

• Leverage AI tools to expedite development and troubleshooting while ensuring accuracy, security, and maintainability.

• Work alongside Product, Design, Data, Marketing, and mobile engineering teams.

⛳️ Requirements

• Proven experience in building and managing backend services in a production environment, with a strong focus on TypeScript.

• Solid understanding of API design, relational databases, data modeling, and automated testing techniques.

• Knowledge of asynchronous processing and distributed systems, including concepts such as retries, idempotency, and consistency.

• Capability to translate product objectives into practical technical solutions and to clearly articulate trade-offs between speed and long-term sustainability.

• Familiarity with product analytics and experimentation, particularly regarding how instrumentation influences the reliability of outcomes.

• Experience in diagnosing production issues through the use of logs, metrics, and tracing tools.

• Strong communication skills, a collaborative mindset, and the ability to take ownership in a dynamic environment.

• Practical experience in utilizing AI within an engineering workflow and critically assessing its results.

• Proficient in English, both written and spoken.

• At least Level 1 AI proficiency (Explorer), with daily use of AI to enhance personal productivity.

• Nice to have: experience with consumer subscriptions, payment providers, or entitlement systems.

• Nice to have: experience with experimentation platforms, attribution, or lifecycle messaging.

• Nice to have: familiarity with Go, cloud infrastructure, and event-driven architectures.

🏝️ Benefits

• Additional benefits beyond total compensation.

• Private company stock options where applicable (included in total compensation estimate).

• Variable compensation, bonuses, or sales incentives where applicable (included in total compensation estimate).

• Country-specific benefits (details provided separately).