Founding Software Engineer

Bending Spoons; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

A fast-scaling tech company in London seeks an experienced engineer to develop its first SaaS product aimed at visualizing complex datasets. You will define and build product features, lead software infrastructure scaling, and ensure reliability through thorough testing. Ideal candidates will have substantial experience with full-stack SaaS development, especially using Python, and will be keen to take initiative in a dynamic environment. Salary ranges from £70k to £100k plus equity.

Qualifications

• Proven experience in building and maintaining full-stack SaaS products.
• Strong backend experience with Python.
• Experience in deploying and operating cloud-hosted applications.

Responsibilities

• Build a SaaS platform presenting model outputs via 3D visualisations.
• Scale software infrastructure from MVP to multi-client.
• Develop backend architecture interfacing with ML pipelines.

Skills

Full-stack SaaS product development

Backend experience in Python

Cloud deployment

Building scalable data workflows

Fast iteration capabilities

Clear communication in a team

Tools

Leapfrog

Datamine

Vulcan

Job description

Job Overview

You will define and build our first product, working closely with the CTO, ML engineers, and geoscientists to turn advanced subsurface models into a production‑ready SaaS platform with rich 3D visualisation.

Responsibilities

• Build a SaaS platform that ingests complex client datasets and presents model outputs through interactive 3D front‑end visualisations.
• Take ownership of scaling the software infrastructure from early MVP to multi‑client deployment.
• Develop scalable backend architecture and services that interface cleanly with ML pipelines and large data‑processing workflows built in Python.
• Lead deployments, infrastructure set‑up, and production reliability, including testing and release processes.

Core Competencies

• Proven experience building and maintaining full‑stack SaaS products.
• Strong backend experience in Python.
• Experience deploying and operating cloud‑hosted applications.
• Experience building scalable data workflows.
• Ability to build quickly and iterate.
• Ability to take initiative, work independently and communicate clearly in a multidisciplinary team.
• Kind, clear thinking and open to give and receive direct feedback.

Strong Plus

• Experience with 3D, scientific, or geospatial visualisation.
• Experience working with large and complex datasets.
• Experience with mining geological software (e.g. Leapfrog, Datamine, Vulcan).
• Previously been a founder or founding engineer.

Compensation & Benefits

£70‑100k base salary plus meaningful equity (up to 1% depending on experience). The role suits a strong experienced engineer who wants real product ownership in a fast‑scaling, early‑stage company. Working in person from London.