Senior Software Engineer, Full-Stack

G2 is the world's largest and most trusted software marketplace. As a Senior Software Engineer, Full-Stack, you will create new products and features end-to-end, contributing to G2’s key organizational goals by building and delivering new products with confidence in their performance.

Responsibilities:

• Build new products and features [60%]:
• Contribute across the full software stack to deliver user journeys to production, owning implementation quality from architecture to release
• Apply sound software engineering and system design principles to produce solutions that are observable, maintainable, scalable, and production ready
• Design and build product features and agents that use frontier models with prompting, context, tools, and model reasoning to fulfill user journeys, generate content, and automate processes
• Validate solutions against functional requirements using both traditional QA methods, evals, and tracing to ensure quality is measurable and reproducible
• Incorporate agentic software engineering techniques into the development workflow across the SDLC, from planning, design, implementation, testing, and maintenance
• Actively participate in product definition as a technologist [35%]:
• Drive product definition with designers and PMs: ideate, explore, and prototype with stakeholders, then cut down possible options to arrive at deliverable, but well-rounded solutions
• Wholly conceive and ship features & MVP iterations early in the product definition phase that directly advance high-visibility organizational goals
• Strike the right balance between investment in UX quality and tending to practical business needs through the product development process
• Partner with other engineering stakeholders to identify what technology makes possible, and what makes implementing a given product or feature hard. Bring that perspective into project scoping and prioritization
• Be a source of influence for other engineers on the team [5%]:
• Share knowledge, techniques, and agentic software engineering practices in async formats and dedicated venues, like technical discussions and team meetings
• Champion the use of AI solutions for engineering and product tasks, accelerate product velocity and team’s execution

Requirements:

• 6+ years of professional programming experience in web application and backend environments
• Expert-level proficiency in Typescript/Javascript or Python; strong working knowledge of modern web application frameworks like React, Next.js, or Rails
• Direct experience refining product requirements in collaboration with a product owner
• Hands-on experience building AI and agent-powered features using frontier models from OpenAI, Anthropic, or Google, understanding of the strengths and limitations of frontier models
• Regular use of coding agent harnesses like Claude Code, Codex, Opencode, or Pi as part of the daily software development workflow
• Experience with continuous delivery through feature flagging and trunk-based development
• BS/BA degree in related field
• Experience deploying or fine-tuning open-weight models for specific use cases
• Hands-on experience with agent orchestration frameworks