Senior Python Engineer

Runtime Group Ltd; Greater London; Hybrid; GBP 81,000 - 99,000; Full time

Job summary

Runtime Group Ltd in London is seeking a Senior Python Engineer to join our growing software house.

You will contribute to the design, development and delivery of scalable features, collaborating with data scientists, engineers and product managers in a fast-paced startup environment. You will own projects and deepen technical expertise while advancing sustainable, ROI-focused solutions.

Qualifications

• 1st class - 2:1 Degree in Comp Sci or STEM subject from a Top ranked University
• 1 - 3 years of experience in Python development
• Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS
• Very strong software engineering principles

Responsibilities

• Contribute to design, development and delivery of scalable, high-impact features across our platform
• Work with experienced engineers, product managers and data scientists to build reliable systems that solve complex financial problems
• Take ownership of individual projects and grow in a fast-paced startup environment

Skills

Python

FastAPI

Pydantic

Data-driven

Education

Bachelor's degree in CS or STEM

Tools

PostgreSQL

Numpy

Pandas

AWS

Job description

Skills: Python, Pydantic, PostgreSQL, Numpy, Pandas,

Work-Model: 1-2 days a month office-visit

Salary: up to £90,000

A Senior Python Engineer is needed to join growing software house in London who specialise in helping businesses reduce wasteful processes, costs and energy; and improve their ROI. sustainability meets profitability.

You will be joining a strong team of Back-end Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial tools.

As a Python Software Engineer, you will contribute to the design, development, and delivery of scalable, high-impact features across our platform. You’ll work closely with experienced engineers, product managers, and data scientists to build reliable systems that solve complex financial problems. This role offers an excellent opportunity to deepen your technical expertise, take ownership of individual projects, and grow in a supportive, fast-paced startup environment.

Requirements:

• 1st class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University
• 1 - 3 years of experience in Python development
• Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS
• Very strong software engineering principles
• Enthusiasm for startup environment and cross-functional teams
• Passion for automation and data infrastructure