Senior Software Engineer (FrontEnd)

Staffing Science; United States; On-site; USD 100,000 - 140,000; Full time

Job summary

A tech-focused company in the United States seeks a Full-Stack Software Engineer with a strong front-end focus. The role involves designing user-friendly interfaces using Svelte and React, as well as building features across modern open-source tools. Ideal candidates should have 8+ years of experience in software development, solid front-end engineering skills, and an open-source mindset. This role offers opportunities to work on AI-driven development tools and contribute to a meaningful open-source ecosystem.

Qualifications

• 8+ years of professional software development experience with a focus on front-end engineering.
• Deep experience with Svelte or React, along with strong TypeScript fundamentals.
• Full-stack proficiency with an open-source backend language such as Node.js, Python, or Go.
• Experience in building developer tools or open-source infrastructure is valuable.
• Background in open-source and active contributions is a plus.

Responsibilities

• Design and implement polished front-end interfaces using Svelte and/or React.
• Build full-stack features across open-source tooling.
• Develop interfaces for interacting with AI/LLM tools.
• Collaborate closely with product and engineering teams.
• Own features from design to deployment.
• Contribute to open-source discussions and best practices.

Skills

Svelte

React

TypeScript

Node.js

Python

Go

Job description

Must be a US Citizen or Green Card Holder | Must be a Front End SME who can work full stack.

Must have worked for startups, have good tenure and ideally have an active github or website to further showcase your experience.

Full-Stack Software Engineer (Frontend-Focused) – AI Infrastructure / Open Source

We are building the next generation of open-source developer tools that power AI integrations at scale. Our platform enables organizations to securely connect AI agents, LLM-powered tools, and enterprise systems using modern protocols and open-source infrastructure. As we help define how developers build with AI, we’re looking for engineers who care about clean design, exceptional user experiences, and open-source collaboration.

About the Role

We’re searching for a Full-Stack Software Engineer with a strong front-end focus to build elegant, performant interfaces for developers interacting with AI tooling, system integrations, and cloud‑native infrastructure. If you’re passionate about frontend craftsmanship—but comfortable working across the full stack—this role offers the opportunity to influence a fast‑growing open‑source ecosystem.

Experience with AI, LLM agents, or Model Context Protocol (MCP) is a plus, but not required. Curiosity and strong engineering fundamentals matter most.

Key Responsibilities3>

• Design and implement polished front‑end interfaces using Svelte and/or React, with a strong emphasis on usability, developer experience, and performance.
• Build full‑stack features across modern open‑source tooling (Node.js, Python, Go, TypeScript—any strong backend experience in OSS languages is welcome).
• Develop and maintain interfaces for discovering, managing, and interacting with AI/LLM tools, integrations, and system connections.
• Work closely with product and platform engineering teams to turn complex workflows into intuitive, accessible UI flows.
• Own features from design, architecture, development, testing, documentation, deployment.
• Contribute actively to open‑source discussions, pull requests, documentation, and best practices.
• Help shape and refine the developer experience for a new category of AI and integration tooling.

Ideal Candidate

Experience

• 8+ years of professional software development experience, with a substantial emphasis on front‑end engineering.
• Deep experience with Svelte (preferred) or React, plus strong TypeScript fundamentals.
• Full‑stack proficiency with one or more open‑source backend languages (Node.js, Python, Go, etc.).
• Experience building developer tools, dev‑platform systems, cloud‑native tools, or open‑source infrastructure is highly valuable.
• Exposure to AI tooling, agents, or MCP is a plus—but not required.

Open‑Source Mindset

• A strong record of open‑source contributions (PRs, issues, personal projects, community involvement).
• Comfortable working in public repositories and collaborating in the open.
• Background in open‑source‑focused companies or developer‑tool startups is a bonus.

Soft Skills & Attributes

• Excellent communication skills and a collaborative, low‑ego approach to engineering.
• Ownership‑driven: you take pride in building clean, maintainable software end‑to‑end.
• Logical, consistent career progression — not looking for contractors or frequent job‑hoppers.
• Strong curiosity about emerging technologies, developer experience, AI systems, and open‑source ecosystems.

What We Value

• Humble collaborators: You elevate your teammates and help build a strong engineering culture.
• Craftsmanship: You care about design quality, reliability, and long‑term maintainability.
• Curiosity & Drive: You love solving difficult problems and exploring new technologies.
• Community Orientation: You enjoy contributing to open‑source and building tools developers want to use.

Why Join Us?

• Build open‑source software used by developers worldwide.
• Work on the emerging ecosystem powering AI/LLM integrations and developer tooling.
• Create high‑impact features in a small, senior, highly technical team.
• Influence the direction of a rapidly evolving space with enormous upside.
• Work on meaningful problems at the intersection of frontend engineering, AI systems, and open‑source innovation.

If you're a front-end expert who enjoys working full‑stack, loves open‑source, and wants to help shape the next wave of AI‑driven development tools, we’d love to talk with you.

Job Details

• Seniority level: Mid‑Senior level
• Employment type: Full‑time
• Job function: Software Development