Senior Software Engineer

Iterum Trading Limited; Greater London; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Equity options

Job summary

Iterum Trading Limited is seeking a Mid‑Level to Senior Full Stack Developer in London to help build Iterum IQ, focusing on AI/ML‑driven features. You’ll work closely with the Head of Product and a Fractional CTO, shaping architecture and mentoring junior developers.

The role offers a path toward Head of Technology, with a hybrid London work arrangement and equity options. Strong Python/Django experience and LLM integration are essential.

Qualifications

• 3–5 years development experience.
• Strong track record building web apps with Python & Django.
• Experience integrating large language models via APIs (OpenAI/Anthropic/LangChain).
• Relational database design and optimization (PostgreSQL/MySQL).
• Cloud hosting experience (Heroku/AWS).

Responsibilities

• Develop and deploy high‑quality features for Iterum IQ platform.
• Manage integrations with payments, email, SMS, and partner APIs.
• Collaborate with CTO and product lead to design scalable systems.
• Participate in code reviews and promote best practices.
• Identify and address performance, reliability, and security improvements.

Skills

Python

Django

LLMs integration

PostgreSQL

MySQL

AWS

Heroku

Engligh communication

Mentoring

Web development

Tools

OpenAI API

LangChain

REST APIs

Git

Job description

Iterum is a seed-stage startup revolutionising appliance management for scaled residential properties. We're addressing a critical but overlooked challenge in property management: the inefficient handling of home appliances and consequential lack of actionable data. These things together lead to significant costs, wasted time, and increased carbon emissions. Our mission is to streamline appliance procurement and management, delivering substantial cost savings for property operators, enhancing resident experiences, and reducing carbon footprints at scale. Our core product, Iterum IQ, is pioneering data accessibility and transparency in the industry, providing unparalleled optimisation throughout the appliance lifecycle.

We've proven initial product-market fit, and are entering an exciting period of growth. We're seeking a talented and ambitious Mid-Level Full Stack Developer to join us as Senior Software Engineer, with potential to move quickly into a Head of Technology role, pending performance. The ideal candidate will be hungry to be a part of building something from the ground up, shape team culture, and prove themselves as a leader. Working closely with our Head of Product and supported by our Fractional CTO, you'll be instrumental in developing our product as we scale, with a focus on building and shipping AI/ML-driven features.

About You

This Is A Great Fit If You Want To Work...

In an early stage company where you'll have the opportunity to build a product from the ground up, shaping its architecture and future direction

Within a collaborative team that values your input and encourages continuous learning

In a role where you can take on increasing levels of responsibility as we grow the team

You Must

Have minimum 3-5 years development experience.

Demonstrate a strong track record of building and maintaining web applications using Python, and the Django framework

Have experience integrating large language models (LLMs) via APIs (OpenAI, Anthropic, or LangChain-style frameworks).

Experience with database schema design, optimization, performance and scalability

Have hands-on experience working with relational databases (PostgreSQL, MySQL, or similar)

Have practical experience with cloud hosting platforms, ideally Heroku and AWS

Possess excellent verbal and written English communication skills, and be able to clearly explain technical concepts to non-technical colleagues

Have interest in fostering the growth of junior developers through mentoring and pair programming

Be based in London, UK, with the ability to work in a hybrid setting

Be legally authorized to work in the United Kingdom (we are unable to sponsor visas at this time)

It Would Be Nice (But Not Necessary) If You Also Had Experience With

3-5+ years in AI/ML engineering with a track record of deploying AI into production at scale.

What Role Involves

Key Responsibilities:

Develop and deploy high-quality features for the customer-facing Iterum IQ platform

Manage integrations with third parties for payments, email, SMS, etc. as well as supplier and business partner APIs

Collaborate with the CTO, product lead, and other team members to design and implement efficient, scalable systems

Participate in code reviews with other developers on the team, ensuring best practices and high-quality code

Proactively raise opportunities to improve the performance, reliability, and security of the platform

What We Offer

Pay: £65,000-90,000 (depending on experience) plus equity options

Flexible working arrangements, but required to be office-based in South London minimum 3 days a week

Southwest London location with onsite gym and pool

Interview Process

First round: Behavioral fit and CV review with Head of Product

Second round: Technical take home task with CTO and dev team (conducted in 2 parts)

Final round: Conversation with founder & CEO

Application Form

Full name *

Current company *

Phone number

Personal statement

CV link *

End-to-end appliance lifecycle solutions for scaled rental portfolios