Senior Full Stack Software Engineer - on site

Simple Solutions • New York, NY

18h • Onsite

About The Position

This role is for a Senior Full Stack Software Engineer at a fast-scaling AI sales intelligence platform that transforms customer conversations into structured data and automated revenue actions. The company is well-funded and operates at the intersection of AI agents and modern revenue infrastructure. The engineer will be responsible for driving end-to-end design and implementation of product requirements, including task breakdown, technical scoping, full feature development (frontend + backend), testing, deployment, monitoring, and ongoing production support. The position involves building and maintaining high-quality, scalable full-stack systems using technologies like React, Next.js, Tailwind, Go, Postgres, Kafka, Redis, AWS, and Kubernetes. Collaboration with Product, Design, and Engineering teams is key to translate product specifications into features, influence product direction, and improve internal systems. The role requires owning the full software development lifecycle from problem definition to production support, contributing to the AI-powered platform by structuring customer interaction data, supporting AI agent workflows, and enhancing CRM intelligence. The ideal candidate will balance short-term delivery with long-term architecture, continuously improve code quality, and thrive in a fast-paced, high-ownership startup environment.

Requirements

• React
• Next.js
• TypeScript
• Go
• Postgres
• AWS
• Kubernetes
• GraphQL/REST APIs
• Strong product thinking
• Ownership mindset
• Ability to ship end-to-end features
• Comfortable with ambiguity and fast iteration cycles
• Comfortable working across frontend + backend (true full-stack, not backend-heavy engineers)
• Real production ownership experience, not just feature contributions

Nice To Haves

• Experience from high-growth startups (Series A–C) or strong engineering orgs where they had direct impact on product + architecture
• Experience as a builder over a maintainer (people who have shipped full features, not just maintained services)
• Experience working on AI/ML-enabled products OR data-heavy SaaS platforms
• Experience working on internal tooling that powers revenue/sales/product workflows

Responsibilities

• Drive end-to-end design and implementation of product requirements, including task breakdown, technical scoping, full feature development (frontend + backend), testing, deployment, monitoring, and ongoing production support
• Build and maintain high-quality, scalable full-stack systems using React, Next.js, Tailwind (frontend), Go, Postgres, Kafka, Redis (backend/data systems), and AWS + Kubernetes for infra and deployment
• Collaborate closely with Product, Design, and Engineering teams to translate product specs into production-ready features, influence product direction with technical and product-driven ideas, and identify opportunities to improve internal systems and workflows
• Own the full software development lifecycle, including problem definition and technical discovery, system design and architecture decisions, implementation and iterative development, testing and validation, demoing and supporting production use cases
• Contribute to and improve the AI-powered sales intelligence platform, including structuring and processing customer interaction data, supporting AI agent workflows and automation systems, and enhancing CRM intelligence, reporting, and revenue visibility tools
• Balance short-term delivery needs vs long-term architecture, making pragmatic engineering trade-offs
• Continuously improve code quality, system reliability, and scalability
• Work in a fast-paced, high-ownership startup environment, taking responsibility from idea production iteration

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed
• Number of Employees: 11-50 employees