Senior Software Engineer, Full Stack

Hybrid (Remote (US/Canada))$175k - $205kFull-timePosted 4mo ago

About the role

Senior Software Engineer at Postscript, a fully remote AI-driven SMS revenue platform for ecommerce, focusing on owning end-to-end systems, building scalable APIs/services, and advancing AI-first development across the engineering organization.

Responsibilities

Take deep ownership of systems and product areas on your team — becoming the go-to technical expert for what you own
Independently investigate, design, and execute solutions across distributed systems with a high degree of ambiguity
Architect, build, and maintain highly available, scalable REST APIs and backend services for internal and external use
Drive system decoupling, modularization, and technical debt reduction — improving long-term maintainability without blocking near-term delivery
Build agentically as your default: leveraging concurrent autonomous agent workflows, owning the output, and keeping a steady queue of aligned work moving
Stay at the forefront of emerging AI tooling and practices, bringing new techniques back to the team and helping raise the floor for how Postscript engineers work
Contribute to how we think about integrating AI into our systems and workflows — not just using AI tools, but helping shape where and how AI creates leverage across the engineering org
Collaborate cross-functionally with product, data, and go-to-market teams — communicating clearly and proactively in an async-first environment
Identify and eliminate single points of failure, improving system resilience and knowledge redundancy across your team
Improve how engineering gets done: bring better tools, fix workflow friction, build internal utilities when the leverage compounds

Qualifications

6+ years of experience building large-scale backend systems and APIs
You are an active, daily user of AI coding tools and are using them to maximize your output — Claude Code, Cursor, Copilot, or equivalent
Tech stack: Python, Go, React, and TypeScript; experience with Kubernetes, AWS, Datadog, and relational/NoSQL databases. You run agentic workflows autonomously and concurrently
You follow the AI tooling landscape closely: new model releases, emerging agentic workflows, and evolving best practices aren't things you catch up on eventually — they're things you're tracking in real time
You think critically about AI output — you know where it accelerates you, where it introduces risk, and how to verify what it produces
You are able to context switch extremely quickly across concurrent workstreams
Experience working on both 0-to-1 initiatives and complex existing systems — and knowing how to balance building new things with improving what's there
Strong command of relational and NoSQL databases, SQL, and thoughtful database modeling
Familiarity building and observing applications on AWS, and ideally with Datadog or comparable observability tooling
Clear, direct communication — cross-functional partners and async teams can count on you to surface information proactively
Strong instincts for technical tradeoffs informed by both engineering best practices and business priorities

Skills

Required:Backend developmentPythonReactTypeScriptAWSSQL / relational databasesNoSQL databases

Nice to have:GoKubernetesDatadog

Benefits

Salary range of USD $175,000–$205,000 base plus significant equity
High growth startup — room to impact the company and grow
Work from home (or wherever in US / Canada)
Competitive compensation and opportunity for equity
Flexible paid time off
Health, dental, vision insurance

Last updated Oct 21, 2026. Interested? Apply on the company site.

About Postscript

The SMS revenue platform for e-commerce merchants

We are building the #1 revenue channel for ecommerce. Top customers include Ruggable, Dr. Squatch, Thrive Cosmetics, and 10,000 more. Postscript generates more than $2B/yr in e-commerce revenue for our merchants, growing ~2x per year. Our goal is to generate $1T+ per year in e-commerce revenue. Interesting challenges: - Massive Scale - Real-time conversations across 100M phones

saase-commerce

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