Senior Full Stack Software Engineer - AI & Data

Qualifications

• 8+ years of full-stack engineering experience, with a proven ability to build and launch full web applications from scratch
• Mastery of React, Next.js, Node.js, and MongoDB
• Proven experience integrating and scaling AI APIs in production environments, including building complex, production-level microservices with an orchestration layer
• Experience creating, integrating and scaling AI APIs in production environments
• Strong expertise in designing and maintaining data pipelines (ETL/ELT, streaming, or batch)
• Deep mastery of AWS services, including but not limited to:
• Lambda, EC2, S3, RDS, API Gateway, SQS, SNS, CloudWatch, IAM, VPC, and ECS with Containerization
• DevOps experience including but not limited to:
• Docker, Swarm, Github Actions, Creating Custom CI/CD pipelines
• Demonstrated ability to scale applications to millions of users
• Strong understanding of system architecture, security, caching strategies, and performance optimization
• Demonstrated ability to scale applications to millions of users

Responsibilities

• You’ll be a key contributor in shaping our technical foundation, AI integrations, and scalable systems architecture
• If you've founded a startup or have built and scaled web applications from the ground-up this role is built for you
• Architect, build, and maintain full-stack web applications using React, Next.js, Node.js, MongoDB, and modern cloud-native tools
• Build pixel-perfect, high-performance front-ends with deep attention to detail and strong design intuition
• Design and implement scalable data pipelines and infrastructure for real-time and batch processing
• Create applications with deep integration of analytics, reporting, and data-driven decision-making tools
• Integrate and operationalize AI APIs such as OpenAI, Anthropic, or other LLM providers into customer-facing features
• Own the full development lifecycle — from architecture and database design to deployment, observability, and scaling
• Collaborate closely with cross-functional teams to rapidly iterate on AI-powered product features
• Mentor junior engineers and contribute to a high-ownership, high-performance culture

Full Description

About Us

Brij is a venture-backed, high growth software startup based in NYC. Our AI-powered platform helps omnichannel consumer brands gain valuable data to “bridge” online and offline audiences to drive revenue across channels. Our suite of tools including warranty registration, sweepstakes & rebates empower brands to connect with their consumers wherever they shop. We work with some of the best brands in the world including Heineken, Feastables, Momofuku, Health-Ade, Skullcandy, and Gozney.

We’re a lean, diverse team with a bias toward action and extreme ownership. Our customer-first mindset drives everything we do, and we’re excited to build the future of omnichannel commerce.

About The Role

We’re looking for a Senior Full-Stack Engineer – AI and Data with an extreme ownership mentality and a proven track record of building scalable, production-grade applications from the ground up. This is a high-impact role at the intersection of product, AI, and data infrastructure. You’ll be a key contributor in shaping our technical foundation, AI integrations, and scalable systems architecture.

If you've founded a startup or have built and scaled web applications from the ground-up this role is built for you.

What You’ll Do

• Architect, build, and maintain full-stack web applications using React, Next.js, Node.js, MongoDB, and modern cloud-native tools.

• Build pixel-perfect, high-performance front-ends with deep attention to detail and strong design intuition.

• Design and implement scalable data pipelines and infrastructure for real-time and batch processing.

• Create applications with deep integration of analytics, reporting, and data-driven decision-making tools.

• Integrate and operationalize AI APIs such as OpenAI, Anthropic, or other LLM providers into customer-facing features.

• Own the full development lifecycle — from architecture and database design to deployment, observability, and scaling.

• Collaborate closely with cross-functional teams to rapidly iterate on AI-powered product features.

• Mentor junior engineers and contribute to a high-ownership, high-performance culture.

What We’re Looking For

• 8+ years of full-stack engineering experience, with a proven ability to build and launch full web applications from scratch.

• Mastery of React, Next.js, Node.js, and MongoDB.

• Proven experience integrating and scaling AI APIs in production environments, including building complex, production-level microservices with an orchestration layer.

• Experience creating, integrating and scaling AI APIs in production environments.

• Strong expertise in designing and maintaining data pipelines (ETL/ELT, streaming, or batch).

• Deep mastery of AWS services, including but not limited to:

• Lambda, EC2, S3, RDS, API Gateway, SQS, SNS, CloudWatch, IAM, VPC, and ECS with Containerization

• DevOps experience including but not limited to:

• Docker, Swarm, Github Actions, Creating Custom CI/CD pipelines. Knowledge of Kubernetes is a plus.

• Demonstrated ability to scale applications to millions of users.

• Strong understanding of system architecture, security, caching strategies, and performance optimization.

• Demonstrated ability to scale applications to millions of users.

• Bonus: You’ve founded a startup or been the first/early technical hire at an early-stage startup.