Skip to content
ReplitReplitFoster City, CA

Staff Software Engineer, Agent Platform

Build high-throughput backend services, collaborative multiplayer systems for AI agents, and full-stack infrastructure to enhance the Agent platform. Requires 5+ years in backend/systems engineering with full-stack experience preferred.

250k – 365k/yr
Hybrid5+ YOEBackend Engineering

About the role

Responsibilities

  • Build high-throughput backend applications and services, like streaming chat between user and agent.
  • Design a collaborative "Multiplayer Computer" that lets humans and AI agents work together on shared shells, filesystems, and state—conflict-free and in real time.
  • Develop infrastructure (frontend & backend) that empowers product engineers to rapidly ship delightful user experiences.
  • Design and build durable, well-crafted interfaces between the Agent and internal systems, as well as external agentic systems (MCP).

Required Skills and Experience

  • 5+ years professional experience in building backend services, systems and platforms.
  • Someone who values simplicity and pragmatism—you think radically but ship incrementally.
  • Self-directed and comfortable working autonomously.
  • Collaborative and team-oriented with a strong sense of shared ownership.

Preferred Qualifications

  • Experience across the full-stack.
  • Experience building AI powered tooling or products.
  • Experience with collaborative editing technologies such as Operational Transforms (OT), CRDTs, or the inner workings of Git.
  • Experience with event sourcing systems.

What We Value

  • Problem-solving mindset: Ability to approach complex operational challenges systematically and devise effective solutions.
  • Self-directed and autonomous: Capable of working independently while collaborating effectively with cross-functional teams.
  • Strong communication skills: Ability to explain complex technical concepts to both technical and non-technical audiences.
  • Continuous learning: Passion for staying current with industry best practices and new technologies.
  • Focus on automation: Strong belief in automating repetitive tasks and building self-healing systems.

Full-Time Employee Benefits Include

  • Competitive Salary & Equity
  • 401(k) Program with a 4% match
  • Health, Dental, Vision and Life Insurance
  • Short Term and Long Term Disability
  • Paid Parental, Medical, Caregiver Leave
  • Commuter Benefits
  • Monthly Wellness Stipend
  • Autonomous Work Environment
  • In Office Set-Up Reimbursement
  • Flexible Time Off (FTO) + Holidays
  • Quarterly Team Gatherings
  • In Office Amenities

Skills

Backend DevelopmentFull-StackAI ToolsOperational TransformsOtCrdtsGitEvent SourcingStreaming ServicesSystems EngineeringDeveloper Experience
Postman

Staff Software Engineer

PostmanNew York, NY +1

Staff Software Engineer building APIs, scaling AI infrastructure, and designing developer experiences. Drive technical direction, mentor engineers, and collaborate across the stack in TypeScript and Next.js.

250k – 310k/yr
On-site8+ YOEBackend Engineering
ClickUp

Staff Backend Engineer, Search

ClickUpUnited States

Staff-level search engineer responsible for designing, scaling, and optimizing ClickUp's search infrastructure using OpenSearch/ElasticSearch, including real-time indexing, vector search, and relevance tuning.

250k – 300k/yr
Remote7+ YOEBackend Engineering
Posh

Staff Software Engineer, Backend

PoshNew York, NY

Own backend architecture across multiple services, write production code, and drive technical direction at a social marketplace platform. Requires 8+ years experience scaling distributed systems with deep expertise in APIs, data modeling, and cloud infrastructure.

250k – 300k/yr
On-site8+ YOEBackend Engineering
Ironclad

Senior Staff Software Engineer

IroncladSan Francisco, CA

Leads architecture and ownership of document/record service for AI-powered contract platform, partnering cross-functionally to build scalable backend systems and drive AI innovation. Requires 7+ years experience in complex backend systems.

250k – 270k/yr
Hybrid7+ YOEBackend Engineering
Replit

Staff Software Engineer, Money Partnerships

ReplitFoster City, CA

Builds and owns zero-to-one integrations with financial partners including payment processors and agentic-commerce protocols. Designs abstractions, observability, and incident response for reliable global transactions in Replit's AI platform. Requires 6+ years backend experience with financial integrations.

250k – 350k/yr
Hybrid6+ YOEBackend Engineering