Senior Backend Software Engineer, SandboxAQ

• If you're obsessed with building well-engineered systems, passionate about scientific impact, and hungry to work in a high-talent, no-ego environment- this is the role you’ve been waiting for
• As an ideal candidate, you are obsessed with data and have experience building observability and metrics into and around the software you’re writing
• You are a great communicator, who uses this data to demonstrate the impact of the software you’re writing and influence its adoption
• You’ll bring broad experience in CI/CD, infrastructure as code, API design, application code, and databases
• Most importantly, you’ll bring a track record of working in a small, fast-moving software development team, exploring new technologies, and solving problems across an entire software stack
• Experience in designing, building, and deploying AI systems, especially in LLMs and agentic systems (multi-agent orchestration, autonomous workflow engines, or goal-oriented agents) is a bonus
• Strong interest in agentic AI, autonomous agents, and multi-agent system design
• 5+ years of experience with Python, with strong knowledge of software design principles
• Understanding of database principles and best practices
• Experience with writing and optimizing database queries, graph database experience is a plus
• Strong understanding of web and network fundamentals and experience with designing, building, and testing web APIs
• Comfort with agentic frameworks, orchestration tools (LangGraph, Haystack, CrewAI, OpenAI Function Calling, etc.), or custom agent architectures is highly desirable
• Knowledge of CI/CD best practices and building CI/CD pipelines
• 3+ years of fluency in infrastructure as code (Terraform), and containerized deployments on public cloud providers. GCP preferred
• Experience with building frontends for web applications
• You care deeply about developer experience; clean code, clear APIs, and great internal tools
• Excellent communication and collaboration skills, with the ability to effectively influence a cross-functional team

Desirable

• This is not your average engineering role
• You’ll be the founding backend engineer building the core of SandboxAQ’s Agentic AI platform, a mission-critical software stack that sits at the intersection of next-gen AI, large-scale simulation, and scientific discovery
• You’ll define and ship the agentic infrastructure that enables autonomous systems to solve real-world problems in drug design, materials science, and chemistry, at scale
• We’re looking for someone who wants their work to matter; to lead the charge, own the code, set the standard, and help define how AI agents interact with the physical world to accelerate discovery
• Design and own the architecture of intelligent agents that autonomously coordinate and drive complex scientific pipelines
• Prototype quickly while thinking long-term with an eye towards maintaining production code, balancing experimental iteration with robust system design
• Develop multi-agent orchestration frameworks and autonomous workflows for simulation and modeling under the guidance of a Tech Lead
• Own software components through their entire lifecycle: design, implementation, testing, deployment
• Design, implement, and scale agentic systems—including autonomous, goal-driven agents and multi-agent workflows—to enable users to configure, monitor, and scale large chemical simulations and scientific pipelines
• Build scalable, production-ready APIs and data systems that interact with simulations, ML models, external APIs, and other agents
• Integrate observability, traceability, and performance analytics into everything you build; your code will tell a story about how it performs and improves
• Contribute to the design and implementation of complex, security-sensitive data processing and storage systems with complex tenancy and data isolation requirements
• Collaborate closely with the product team and internal stakeholders in all phases of software development to validate the solutions you propose and implement
• In collaboration with the rest of the engineering team, build and manage infrastructure for SandboxAQ’s simulation and data platform
• Enhance CI/CD pipelines to improve developer experience and velocity
• Review code and participate in design and architectural discussions