Senior Software Engineer II
About Extend:
Today, Extend works with more than 1,000 leading merchant partners across industries, including fashion/apparel, cosmetics, furniture, jewelry, consumer electronics, auto parts, sports and fitness, and much more. Extend is backed by some of the most prominent technology investors in the industry, and our headquarters is in downtown San Francisco.
About The Role:
We are looking for an exceptional Senior Software Engineer II to join the Purchase Experience (PEX) team, a core pillar driving our company's growth and customer satisfaction. This role offers a unique opportunity to build impactful software used by some of the largest ECommerce and Brick and Mortar merchants in the industry, processing millions of API requests daily, directly influencing how our merchants and customers interact with our services.
You’ll partner closely with cross-functional teams in product, merchant integrations, design, operations, and the broader engineering organization - contributing significantly to a culture of innovation, continuous improvement, and excellence.
What You'll Do:
- Architect and develop highly scalable, event-driven applications and APIs using AWS Serverless technologies.
- Collaborate seamlessly with product managers, designers, and integration specialists to deliver robust, user-focused enhancements aligned with our agile continuous delivery practices.
- Play a critical role in influencing the overall platform architecture, ensuring scalability, reliability, and maintainability while identifying opportunities to improve our offerings.
- Provide technical mentorship, coaching, and guidance to team engineers, elevating our capabilities and fostering technical growth.
- Develop and manage sophisticated data management solutions and back-end services essential to our mission-critical operations.
What We’re Looking For:
- 7+ years of demonstrated experience in full-stack software development, with a strong emphasis on backend and cloud infrastructure.
- Expert proficiency in TypeScript/NodeJS and React, including deep familiarity with modern development practices.
- Proven track record building distributed, highly available, scalable systems in cloud environments, particularly using AWS.
- Extensive experience developing robust Consumer facing and internal high performance APIs and distributed system architectures.
- Hands-on experience with AWS serverless frameworks.
- Exceptional communication skills, able to effectively articulate complex technical concepts clearly to diverse audiences, including business stakeholders, designers, support teams, and fellow engineers.
- Strong capabilities in data modeling, one table design, and diverse data management principles, ensuring efficiency, consistency, and reliability of data-driven systems.
- Experience working with and driving forward the usage of AI developer tooling in an ever shifting landscape.
Expected Pay: $185,000 per year salaried*
* The target base salary range for this position is listed above. Individual salaries are determined based on a number of factors including, but not limited to, job-related knowledge, skills and experience.
Life at Extend:
- Working with a great team from diverse backgrounds in a collaborative and supportive environment.
- Competitive salary based on experience, with full medical and dental & vision benefits.
- Stock in an early-stage startup growing quickly.
- Generous, flexible paid time off policy.
- 401(k) with Financial Guidance from Morgan Stanley.
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