Staff Software Engineer, Inference / Compute Infrastructure Engineering

Together AI; Greater London; Hybrid; GBP 100,000 - 160,000; Full time

Job summary

Together AI is seeking a Staff Software Engineer to design a Kubernetes-native control plane that provisions and runs a GPU inference fleet across London and Amsterdam. You’ll build a manifest-driven API, contribute self-service tooling, and optimize scheduling, defragmentation, and capacity balancing to push utilization while preserving latency.

You’ll own the provisioning lifecycle, build reliable pipelines, and partner with the ML platform team to encode cluster shapes as first-class

Qualifications

• Strong software engineering background with Go, Python, Rust, or similar.
• Experience with durable workflow orchestration tools (Temporal, Cadence, etc.).
• Experience building software control planes or orchestration systems (Kubernetes controllers/CRDs).
• Experience with event-driven systems using message queues or streams.

Responsibilities

• Build the provisioning state machine for full lifecycle of hosts, from discovery to decommission.
• Create a self-service API to allow the inference team to manage clusters without tickets.
• Automate self-healing: detect degraded nodes and trigger repairs or replacements.
• Own reliability of the pipeline with idempotency, retries, and drift detection.

Skills

Go

Python

Rust

Kubernetes controllers

Event-driven

GPU scheduling

Tools

Temporal

Cadence

Job description

Staff Software Engineer, Inference / Compute Infrastructure Engineering

London & Amsterdam

About the Role

We're looking for a software engineer to build the Kubernetes-native control plane that provisions and runs our GPU inference fleet. You'll design a manifest-driven API where the inference team declares what they need, whether that's a cluster, a model deployment, or a capacity change, and our controllers handle the reconciliation, provider/runtime selection, and lifecycle management underneath, so the inference team never has to know or care which specific serving stack, scheduler, or hardware pool is doing the work. You'll also build the systems that keep the fleet efficient, not just running, including defragmentation and rebalancing logic that consolidates scattered workloads back into contiguous capacity, and scheduling/bin-packing improvements that push GPU utilization up without hurting latency. The core value we're after is decoupling the people building on top of the platform from the operational and runtime complexity underneath, while squeezing more usable capacity out of the same hardware. You'll build the controllers, reconciliation loops, and self-service surface (API/CLI, not tickets) that make that decoupling real, plus the event-driven health, remediation, and utilization systems that keep it running and efficient without a human in the loop. Strong candidates have hands-on experience with Kubernetes controller/CRD patterns, have built or operated a platform API that abstracts multiple backends behind one interface, understand GPU scheduling and capacity efficiency (fragmentation, bin-packing, right-sizing), and think about GPU infrastructure as software to be engineered.

A product mindset - you've built internal platforms or APIs consumed by other engineering teams and care about the developer experience of what you ship.You build it, you own it. You are not only responsible for delivering the software but also for operating and supporting it in production.

Responsibilities

• Build the provisioning state machine: design and implement the software that models the full lifecycle of a physical host from discovery, inference bring-up to GPU driver/CUDA stack, health validation, and decommission/RMA - as explicit, versioned states and transitions.
• Build the self-service API: design declarative APIs and a control plane so the inference team can request, scale, and tear down inference clusters with one API call - no ticket, no human in the loop.
• Automate self-healing: detect degraded or failed nodes, drain them safely, trigger repair or replacement, and reintroduce healthy capacity into the pool automatically.
• Own reliability of the pipeline: idempotency, retries, rollback, and drift detection so the provisioning system is as dependable as any other production service.
• Partner with the inference/ML platform team: understand the cluster shapes they need - topology, interconnect, scheduling constraints - and encode them as first-class abstractions in the platform.
• Engineer it like software: strong typing, automated tests, code review, versioning, and CI/CD for infrastructure code - this is a product, not a collection of Ansible playbooks.

Requirements

Core requirements (all levels):

• Strong software engineering background in Go, Python, Rust, or similar - you write and test real software for a living.
• Experience with durable workflow orchestration tools such as Temporal, Cadence, or equivalent to run long-lived, manifest-driven workflows that survive failures and resume mid-execution.
• Experience building software control planes or orchestration systems that model state and reconcile it over time (e.g., Kubernetes controllers/operators, custom reconciliation loops, workflow engines).
• Experience with event-driven systems - designing and building software around message queues, event streams, or pub/sub (e.g., Kafka, NATS, SQS) rather than polling or cron-driven scripts.
• A product mindset. You've built internal platforms or APIs consumed by other engineering teams and care about the developer experience of what you ship.

Nice to have:

• Exposure to bare-metal provisioning (PXE/iPXE, Redfish/IPMI, BMC) and/or networking fundamentals (VLANs, BGP, fabric design), or GPU/accelerator infrastructure.
• Experience with GPU cluster software stacks (NCCL, CUDA, InfiniBand/RoCE).
• Prior work at a hyperscaler, GPU cloud, or datacenter-scale infrastructure organization.
• Systems programming in Rust or Go.

About Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers and engineers in our journey in building the next generation AI infrastructure.

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.