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AI Full Stack Developer – 12 months contract
This role is for a full-stack developer to build and maintain web applications while integrating AI and Generative AI capabilities. The developer will use AI-assisted coding tools daily to accelerate development and deliver enterprise-grade AI solutions.
Senior QA Engineer, Safety
Senior QA Engineer builds and owns test strategies for Roblox’s safety systems, automating critical flows and applying AI to reduce manual toil while ensuring abuse-resistant coverage.
Senior Software Engineer, Data Infrastructure
Build and scale Roblox’s distributed data infrastructure (Kafka, Flink, Spark, Trino, Druid) to process petabytes daily, enabling analytics, ML, and product decisions at massive scale.
Senior Data Engineer (AI & Data Platform)
Greenfield Senior Data Engineer building an analytical data platform on cloud infrastructure, designing ELT pipelines with dbt/Postgres, and creating AI data layers including embeddings, vector stores, and RAG plumbing for internal and customer-facing LLM agents.
Senior Analyst, Safety Operations Tooling
Own and evolve Roblox’s agent-facing tooling ecosystem (Zendesk, Absorb, JIRA) to support global Trust & Safety and Support teams, integrating systems and automating workflows.
Design Engineer
Builds backend services, APIs, and AI-driven tools to scale Roblox’s design systems and accelerate internal workflows for designers and engineers.
Principal Software Engineer, Data Infrastructure
Lead the architecture and long-term vision for Roblox’s petabyte-scale data infrastructure, including Kafka, Flink, Spark, and Trino, while integrating AI-driven autonomous interfaces.
Senior Security Software Engineer, IAM
Build next-gen identity and access management for humans and AI agents, designing secure authentication, authorization, and privileged access systems at Roblox's scale.
Senior Product Manager (AI agent)
Leads AI agent development for Zeely’s marketing automation platform, shaping vision, workflows, and integrations to automate user tasks (e.g., ad campaigns) via AI-driven agents.
Senior Software Engineer: Assistant
Senior Software Engineer leading AI system development for Roblox's creator tools, working across full stack and cloud-native architecture.
[2027] Software Engineer, Early Career
Build and deploy features for Roblox’s 3D immersive platform, working with C#, Lua, and other languages to shape experiences used by millions daily.
[Summer 2027] Software Engineer Intern
Build and ship production features for Roblox’s 3D immersive platform, tackling distributed systems, real-time comms, and rendering while learning from senior engineers.
Software Engineer, Communications
Build and scale real-time chat and safety systems for Roblox’s 3D platform, integrating ML models and backend services to protect billions of messages while enabling creative expression.
ML Research Engineer - Member of Technical Staff
ML Research Engineer at Callosum designing experiments to understand why agentic AI systems fail, building evaluation infrastructure, and publishing findings to improve heterogeneous model/hardware orchestration.
Senior Technical Program Manager, Human-in-the-Loop Operations
Own the AI data labeling and model evaluation ecosystem for Roblox’s AI models, scaling manual workflows to AI-assisted operations while managing a distributed contractor workforce.
Evolutionary Optimisation - Member of Technical Staff
Build and improve an LLM-guided evolutionary search system that iteratively generates, evaluates, and optimises programs across kernels, inference runtimes, and scheduling policies, working with optimisation and search algorithms at an AI infrastructure startup in London.
Principal Security Software Engineer, IAM
Principal engineer defining identity and access systems for Roblox’s production infrastructure, including mTLS, SPIFFE/SPIRE, PKI, and AI-agent identity, while mentoring teams and driving long-term security strategy.
Research Engineer, Benchmarking - Member of Technical Staff
Build and own a unified benchmarking system for evaluating agentic and algorithmic LLM solutions at Callosum's London office, using Python, sandboxed execution, and distributed systems to produce reproducible, contamination-controlled evaluation results.
AI Engineer (m/f/d)
Build and own agentic AI systems for real-estate financial management, including LLM orchestration, evals, and observability to forecast budgets and flag anomalies.