Senior Software Engineer, Full Stack

Postscript is a remote organization providing SMS marketing solutions for ecommerce brands. They are seeking a Senior Software Engineer, Full Stack to enhance their core platform and message orchestration system, focusing on building scalable distributed systems and driving technical standards.

Responsibilities:

• Take ownership of the 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

Requirements:

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