Senior Backend Engineer

Role Description

As a Senior Backend Engineer on the App Systems team, you'll be a high-ownership contributor to Fondue — Postscript's cashback, discounting, and incentives product — as well as broader offers and incentives infrastructure across the platform. This role sits at the center of high-margin revenue and a product with a competitive, high-visibility roadmap.

You'll be working on evolving, distributed systems with significant greenfield opportunity — implementing AI-first development practices, decoupling monolithic dependencies, and driving the technical standards that allow Fondue to scale alongside Postscript's core platform. This is a high-autonomy role that demands independent investigation, strong technical design instincts, and the ability to move fast without sacrificing system health.

This position is fully remote and can be based in the US or Canada.

Primary Duties

• Take ownership of the Fondue product and its underlying architecture — becoming the go-to technical expert for cashback, discounting, and incentives systems.
• Independently investigate, design, and execute solutions across evolving distributed systems with a high degree of ambiguity.
• Drive system decoupling and modularization — break down monolithic dependencies into flexible, independently deployable components.
• Implement AI-first coding practices and tooling to reduce cognitive load, accelerate development cycles, and shorten time-to-market for new capabilities.
• Help Fondue and other subsidiary products adopt Postscript's core tools, data formats, and technical standards to reduce cross-team friction.
• Architect, build, and maintain highly available, scalable REST APIs for internal and external use.
• Collaborate cross-functionally with finance and customer support teams — clear, proactive communication is essential in this role.
• Contribute to process and technical improvements; someone who can quickly ramp on new systems and propose meaningful changes will thrive here.
• Identify and eliminate single points of failure, improving knowledge redundancy and overall system resilience.

Qualifications

• 4+ years experience building large-scale backend systems and APIs with Typescript (Go preferred; Python, Java also valued).
• Experience with autoscaling strategies for applications deployed on Kubernetes or other container orchestration platforms.
• Comfortable using agentic coding tools like Claude Code, Cursor, or similar AI-first development tooling.
• React experience is a strong nice to have.
• Experience with both 0-to-1 initiatives and complex existing systems, balancing building new things with improving what's already there.
• Experience with relational and NoSQL databases, SQL, and thoughtful database modeling.
• Familiarity with building and observing applications on AWS, and ideally Datadog.
• Ability to communicate with clarity and directness — cross-functional partners and async teams can count on you.
• Energized by distributed systems challenges and high-ownership environments.
• Strong instincts for technical trade-offs informed by both engineering best practices and business priorities.

Benefits

• Salary range of USD $172,000–$203,000 base plus significant equity (we do not have geo-based salaries).
• High growth startup — plenty of room for you to directly impact the company and grow your career.
• Work from home (or wherever).
• Fun — we're passionate and enjoy what we do.
• Competitive compensation and opportunity for equity.
• Flexible paid time off.
• Health, dental, vision insurance.