Full Stack Engineer (mid-level) at Haystack
London, England, United Kingdom -
Full Time


Start Date

Immediate

Expiry Date

25 Oct, 25

Salary

0.0

Posted On

25 Jul, 25

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

No

Skills

Knowledge Sharing

Industry

Computer Software/Engineering

Description

ABOUT US

We’re GEEIQ (pronounced ‘Geek’) and we’re a data platform and insights provider that’s used by the likes of Gucci, Walmart, L’Oreal and Porsche to navigate and engage virtual worlds. Think Ralph Lauren in Fortnite, or Elton John in Roblox.
Brands demand more than just visibility when it comes to activating in these spaces, they need to be able to measure, attribute and identify tangible revenue opportunities. That’s where our platform comes in.
Located a short distance from Paddington, London, GEEIQ is a team of ~40 innovators, with ambitious growth plans in the next 24 months. We’re predominantly office based, where we foster a culture of collaboration and innovation. Every idea is valued and every team member plays a pivotal role in shaping the future of digital brand experiences.

YOUR FOCUS

As a Fullstack Engineer (Engineer II) at GEEIQ, you will be instrumental in both frontend and backend development, contributing to the creation of responsive and scalable web applications.
You’ll have a growing emphasis on backend systems while maintaining proficiency across the full stack. You will collaborate closely with Product, Design, and senior engineers to understand project goals, contribute to technical discussions, and deliver high-quality solutions.
This role requires a solid understanding of software development principles, from UI/UX considerations to backend architecture and integrations. You will primarily design and implement APIs and services using Node.js, JavaScript, and TypeScript, and contribute to frontend development using React. A key aspect of this role is the ability to effectively understand and work WITH AI-powered developer tools (e.g., Cursor, Claude Code, Gemini, GitHub Copilot) to enhance productivity, code quality, and accelerate development cycles.
We are seeking a motivated and growing engineer who thrives in a dynamic, scaling organization and is eager to contribute to impactful projects. The ideal candidate is passionate about prototyping and shipping quickly, and continuously learning new technologies and best practices.

Responsibilities
  • Backend Development:
  • Design, develop, and maintain robust, scalable, and secure backend services and APIs using Node.js and TypeScript.
  • Integrate with various third-party services and data sources.
  • Optimize application performance, reliability, and scalability.
  • Work with data at scale and integrate it into internal pipelines and systems.
  • Frontend Development:
  • Develop user-friendly interfaces using React, JavaScript/TypeScript, and ensure optimal performance across various devices and browsers.
  • Implement responsive designs and ensure seamless integration with backend services.
  • Full-Stack Contributions:
  • Collaborate with cross-functional teams to integrate new features and technologies across the stack.
  • Contribute to the entire software development lifecycle, from an idea to production.
  • Cloud Services & Deployment:
  • Work with and deploy applications to cloud platforms like AWS and Google Cloud Platform (GCP), contributing to infrastructure reliability and scalability.
  • Gain experience with containerization technologies (e.g., Docker) and contribute to CI/CD pipelines.
  • Database Management:
  • Develop and contribute to the optimization of SQL (e.g., PostgreSQL, MySQL) and NoSQL database solutions.
  • Ensure data integrity and contribute to performance improvements in database operations.
  • AI Tool Integration & Innovation:
  • Actively utilize and explore AI developer tools (e.g., Cursor, Claude Code, Gemini) to streamline coding, debugging, and learning processes.
  • Contribute to best practices for leveraging AI tools within the engineering team.
  • Code Quality and Collaboration:
  • Uphold high standards of code quality through diligent development, participation in code reviews, and writing unit/integration tests.
  • Support junior team members and actively participate in a culture of continuous learning and knowledge sharing.
  • Project Contribution:
  • Contribute significantly to development projects, taking ownership of features and tasks.
  • Collaborate with product managers and designers to understand requirements and translate them into technical solutions.
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