Senior Fullstack Engineer, Conversations AI

Job Description

At Postscript we’re leveraging AI to revolutionize SMS performance driving measurable revenue gains through continuous self-improvement proven by real-time testing. As the online shopping landscape grows the demand for scalable personalized customer engagement solutions is unprecedented.

As a Senior Full-Stack Engineer (Front-End Leaning) on the Conversations AI Team you’ll be at the forefront of innovation using your expertise in both front-end and back-end technologies to push the boundaries of conversational AI. You’ll focus on rapid prototyping and build intuitive scalable interfaces that enhance our AI-driven conversational tools driving real-time engagement with millions of users. Your work will directly impact Postscript’s bottom line and our customers’ success by transforming SMS into their most powerful revenue channel.

This role offers a unique opportunity to blend cutting-edge AI capabilities with modern front-end development practices contributing to Postscript’s vision of next-level customer engagement.

What You’ll Do:

• Architect build and maintain scalable high-performance full-stack applications with a focus on intuitive user interfaces using React and TypeScript.

• Collaborate closely with cross-functional teams to integrate LLMs OpenAI models and RAG techniques into our platform ensuring real-time personalized SMS engagement.

• Rapidly prototype new features and user interfaces iterating quickly to deliver customer-focused solutions.

• Contribute to backend systems using Python (Flask) and AWS to power our AI-driven tools ensuring seamless integration with front-end components.

• Lead the design and deployment of highly available modular systems that scale to millions of users.

• Mentor and guide other engineers fostering a culture of learning and continuous improvement.

• Balance technical excellence with rapid development to meet the evolving needs of the product and business.

What We’re Looking For:

• Strong experience in front-end development with React and TypeScript with a passion for building modern intuitive user interfaces.

• Expertise in full-stack development with solid experience in Python (Flask) and building scalable backend systems.

• Fluency in CSS with the ability to create responsive maintainable and visually appealing interfaces that align with modern UI/UX principles.

• Minimum 6-8 years of professional software development experience with 1-2 years at minimum in AI solutions preferred.

• Proven track record of rapid prototyping and delivering high-quality features quickly.

• Experience with AWS architecture relational databases and building high-performance APIs.

• Ability to lead app projects from concept to delivery managing ambiguity and driving results.

• Experience mentoring and leading engineering teams with a collaborative mindset and excellent communication skills.

What We’ll Love About You

• You’re curious and enthusiastic—you love building things

• Energized by early stage companies and the opportunity to own and improve a new fast-growing codebase

• You can drive technical decisions by measuring trade offs informed by both business priorities and technical needs

• You have empathy for users and enjoy helping others

• Bonus : Remote work experience. You love working on a remote-first team

What You’ll Love About Us

• Salary range of USD $170000-$200000 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