Senior Full Stack Engineer

My client is looking for a Senior Full Stack Software Engineer to join their engineering team and help architect, build, and scale their AI procurement platform. You'll work directly with the founding team to lead critical technical initiatives and drive architectural decisions that shape the product.

You will contribute across the entire stack while providing technical leadership, mentoring junior engineers, and establishing engineering best practices. Your expertise will be crucial in building robust, scalable systems that power AI-driven procurement solutions.

This is an excellent opportunity for an experienced engineer who wants to make a significant impact in a fast-growing startup, taking ownership of complex technical challenges and helping define the engineering culture.

What You'll Do

• Architect, design, and implement scalable solutions across the full stack
• Lead the development of complex features using React/TypeScript, NestJS, and PostgreSQL
• Define and implement data models, APIs, and services that power the AI procurement platform
• Develop AI-powered features by leveraging LLM APIs and vector databases
• Build and optimize data pipelines for processing customer data
• Contribute to infrastructure development and deployment using Terraform and AWS
• Establish engineering best practices, coding standards, and testing methodologies
• Mentor junior engineers and provide technical guidance to the team
• Collaborate with the product team to translate business requirements into technical solutions
• Make key architectural decisions that enable the platform to scale

What You'll Need

• 5+ years of professional experience as a full-stack or backend engineer, ideally in a high-growth startup or fast-paced, dynamic environment
• Ability to navigate ambiguity and deliver in evolving product & technical landscapes
• Expert knowledge of JavaScript/TypeScript, with strong coding and system design skills
• Extensive experience with React and modern front-end architectures
• Proven track record building robust back-end systems with Node.js and RESTful APIs
• Strong experience with relational databases, SQL, and data modeling
• Hands-on experience with AI models or LLM APIs (e.g., OpenAI, LangChain) in real-world products or internal tools
• Experience with infrastructure as code (IaC) and cloud computing platforms
• Knowledge of software development best practices, including CI/CD, testing, and code quality
• Excellent problem-solving and debugging skills, with a proactive, ownership-driven mindset
• Strong communication skills and ability to collaborate across teams in fast iteration cycles

Technical Requirements

• Advanced React/TypeScript development skills and component architecture expertise
• Proficiency with NestJS, MikroORM, or similar TypeScript back-end frameworks
• Experience with PostgreSQL database design, optimization, and management
• Knowledge of AWS services (ECS, Lambda, S3, SQS, API Gateway)
• Experience with Terraform or similar IaC tools for managing cloud infrastructure
• Familiarity with integrating LLM APIs (e.g. OpenAI, Anthropic)
• Experience with prompt engineering, chaining, and orchestration frameworks (e.g. LangChain) to support dynamic AI workflows and agent-based logic
• Experience building and optimizing data pipelines and ETL processes
• Familiarity with containerization technologies (Docker, Kubernetes)
• Experience with automated testing frameworks (Playwright, Jest)

Nice to Have

• Background in procurement, supply chain, or B2B SaaS domains
• Experience scaling systems from early-stage to production
• Knowledge of real-time data processing and event-driven architectures
• Prior startup experience, particularly in early-stage environments
• Open-source contributions or technical blog writing

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