368,611open jobs
9,439companies
50,719added this week
Browse all
Salary
$355k per year
Location
In office (London)
Seniority
Senior · 5+ years exp
Overview
Company
Impact
Profile match

xAI

xAI is an American artificial intelligence company founded by Elon Musk in 2023 with the stated goal of building models that help humans understand the universe. It develops the Grok family of large language models, distributes them through a consumer assistant, a developer API and deep integration with the X social platform, and adds image and video generation through Grok Imagine. The company runs its own Colossus supercomputer clusters in Memphis, Tennessee, is headquartered in Palo Alto, California, and merged with X Corp in 2025 to combine model development with a large consumer distribution channel.

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE:

We are seeking a talented Software Engineer to join our X Money team, focused on building a revolutionary global payment network that will serve over 600 million users and rival the world’s largest financial institutions. In this role, you will specialize in backend development, designing and optimizing robust microservices to ensure scalability, security, and reliability. You will support full-stack efforts, collaborate with cross-functional teams on payments, fraud detection, and compliance initiatives, and contribute to the creation of a high-scale financial products platform. This is an opportunity to work on greenfield projects in a fast-paced, startup-like environment, driving innovation at the intersection of AI and finance.

RESPONSIBILITIES:

  • Develop backend services, APIs, and data models to support high-volume, multi-user environments.
  • Work with iOS, Android & Web client engineers to ship products.
  • Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement across platforms.
  • Build and maintain fullstack features, including user dashboards, personalized experiences, content delivery, interactive tools, assessments, and real-time analytics. 
  • Lead architecture, scalability, and reliability decisions for high-concurrency, low-latency systems.
  • Uphold engineering excellence via testing, monitoring, deployment, and secure data handling.

BASIC QUALIFICATIONS:

  • Proficiency in distributed systems for high-scale, low-latency environments; languages like Rust, Go, Python & Java, and high volume streaming systems.
  • 2+ years of experience working on large scale consumer applications.

PREFERRED SKILLS AND EXPERIENCE:

  • 5+ years of experience working on large scale consumer applications or early-mid stage startup experience as a founding engineer, emphasizing rapid prototyping, user-centric design, and AI solutions.

COMPENSATION AND BENEFITS:

£107,000 - £262,000 GBP

Base salary is just one part of our total rewards package at SpaceXAI, which also includes equity, comprehensive healthcare and dental coverage, cash plan, income protection, life insurance, and various other discounts and perks.

SpaceXAI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
368,611 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Similar stack
Same company
London
$18k – $48k per year (Estimated) • In office • Full-Time • 7+ years exp • Mumbai
JavaScript
SQL
TypeScript
Java
Java
Spring Boot
Frontend
Angular
DevOps
AWS
Azure
Kubernetes
Rest API
Apply
$24k – $57k per year (Estimated) • Remote/Hybrid • Full-Time • 5+ years exp • Master's Degree • Bengaluru
Python
VHDL
Chips/EDA
Cadence Xcelium
Siemens QuestaSim
Apply
$89k – $212k per year (Estimated) • Remote/Hybrid • Full-Time • 6+ years exp • Rehovot
Bash
Python
DevOps
Amazon CloudWatch
Amazon EKS
AWS
CI/CD
Datadog
GitLab
GitLab CI
GitOps
Grafana
IAM
Kubernetes
PagerDuty
Pulumi
Terraform
Terragrunt
VictoriaMetrics
Apply
$40k – $86k per year (Estimated) • Remote/Hybrid • Full-Time • Élancourt
Bash
PowerShell
Python
SQL
Databases
MySQL
PostgreSQL
Redis
DevOps
Amazon CloudWatch
Ansible
AWS
Azure
CentOS Stream
CI/CD
Debian
Docker
GCP
GitLab
GitLab CI
Grafana
Hyper-V
IAM
Jenkins
Kubernetes
Nagios
Prometheus
Proxmox VE
Terraform
Ubuntu
VMWare
Windows Server
Zabbix
Apply
$100k – $145k per year • In office • Full-Time • 5+ years exp • New York
JavaScript
SQL
TypeScript
Java
Java
Spring Boot
Databases
MySQL
Oracle
PostgreSQL
Frontend
Angular
React.js
Vue.js
DevOps
Git
Apply
$117k – $239k per year (Estimated) • In office • 3+ years exp • Memphis
Apply
$440k per year • In office • Palo Alto
C++
AI/ML
CUDA Toolkit
CUDA
Frontend
Sass
Apply
$167k – $358k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Memphis
Python
SQL
AI/ML
BERT
InfiniBand
DevOps
HPC
Apply
$440k per year • In office • Palo Alto
C++
Python
Rust
AI/ML
LLM
Reinforcement Learning
Apply
$600k per year • In office • Palo Alto
AI/ML
Reinforcement Learning
RLHF
DPO
Post-training
Apply
$65k – $155k per year (Estimated) • In office • Internship • Bachelor's Degree • London
Go
JavaScript
Ruby
Scala
Apply
In office • Internship • 1+ year exp • Bachelor's Degree • London
Go
JavaScript
Ruby
Scala
Apply
$221k – $370k per year • In office • Full-Time • 5+ years exp • London
AI/ML
OpenAI
Apply
$72k – $136k per year (Estimated) • Equity • Remote/Hybrid • 5+ years exp • London
Python
SQL
Databases
Snowflake
AI/ML
AI Agents
DevOps
Kibana
Marketing
Salesforce
Apply
$77k – $148k per year (Estimated) • Equity • In office • Master's Degree • London
JavaScript
Python
Scala
AI/ML
AI Agents
DevOps
GitHub
Apply
See all jobs
This is one of many
368,611 more open roles from verified company boards, updated every day.