Lead Python Developer

Fundment Limited; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Pension 6% employer contribution

BUPA Private Health Insurance – fully

Medicash Cashplan – fully paid for by

Travel insurance – fully paid by the

Life Assurance – 4 x base salary

Employee Assistance Programme

28 days annual leave + bank holidays

Paid compassionate leave – up to 5days

Hybrid work – 3 days/week in Fitzrovia

Job summary

Fundment Limited is seeking a Lead Python Developer in London to lead a pod of 3-4 engineers, spending ~50% on hands-on coding and ~50% on technical leadership. You’ll drive execution, ensure quality, and deliver reliable systems aligned with business needs.

You will collaborate with product managers to ensure feasible scope and accurate estimation, while maintaining alignment across the pod and delivering high standards within a hybrid model.

Qualifications

• 5+ years commercial Python experience in backend systems.
• Experience leading a small pod or acting as tech lead in an agile environment.
• Effective communicator bridging technical and non-technical discussions.
• Ownership mentality – takes responsibility for pod outcomes.
• Experience in a founder-led or scaling business is advantageous.

Responsibilities

• Lead development of features and fixes, writing clean, secure code aligned with business goals.
• Review PRDs with the PM to ensure clarity and accurate estimation.
• Own sprint planning and pod-level execution, including scoping and sequencing of work.
• Elevate delivery risks or blockers to Engineering Manager for alignment.
• Lead initial architecture and technical design, with a collaborative review process.
• Mentor the team through code reviews and setting strong technical examples.
• Ensure production readiness and triage live issues with urgency.
• Coordinate rollouts with PM and App Support and ensure follow-through after release.
• Continuously improve engineering practices, tooling, and system resilience.
• Represent the pod in cross-pod delivery initiatives.

Skills

Python

Leadership

Backend systems

Agile

Job description

Logistics

Employment type: Permanent

Job Description

As a Lead Python Developer at Fundment, you’ll lead a pod of 3 - 4 engineers, including yourself, combining hands-on development (around 50% of your time) with technical leadership. You’ll drive execution, uphold delivery quality, and ensure the team builds reliable, maintainable systems that serve real business needs.

You’ll collaborate closely with product managers - reviewing PRDs to ensure they’re clear, technically feasible, and scoped appropriately. Enabling you to produce accurate estimation and help PMs prioritise effectively. While they focus on broader coordination, you’ll keep the pod aligned, focused, and delivering at a high standard.

Key Responsibilities

Lead development of features and fixes, writing clean, performant, secure code aligned with business goals

Review PRDs with the PM to ensure clarity, highlight edge cases, and produce accurate estimation

Own sprint planning, and pod-level execution, including scoping, sequencing and overseeing delivery

Proactively elevate delivery risks, technical blockers or trade-offs to your Engineering Manager for input or alignment

Lead initial architecture and technical design for your pod’s work, running a collaborate review process with EMs and other relevant leads before implementation

Raise team standards through mentoring, code reviews, and setting strong technical example

Ensure production readiness – triage and prioritise live issues with appropriate urgency, coordinating with App Support and escalating when needed

Coordinate rollouts with the PM and App Support, ensuring smooth deployments and follow through after release

Continuously improve local engineering practice, tooling and system resilience

Represent your pod in scrum-of-scrums and cross-pod delivery initiatives

Requirements

Experience & Leadership

5+ years commercial Python experience in backend systems

Experience leading a small pod or acting as tech lead in an agile environment

Strong judgement on priorities, trade-offs, and production support

Effective communicator, bridging the technical and non-technical discussions

Business focused - weighs immediate and longer-term business impact against purely technical / theoretical enhancement

Able to influence and gain trust through mentoring and unblocking

Ownership mentality – takes responsibility for pod outcomes

Experience gained in a small founder led/scaling business

Knowledge of FCA compliance/Financial Services/regulated environment preferred

Highly motivated to learn about Fundment’s products

Technical Expertise:

Python: FastAPI, Pydantic, SQLAlchemy, PyTest, Pandas, Numpy

Cloud:

Experience supporting production systems

Security & Compliance: Familiar with secure coding and regulated environments

Values

Collaborative – Deliver as a team, communicate clearly, and prioritise collective outcomes

Innovative – Challenge what doesn’t work, try new approaches, and keep improving

Supportive – Help your team succeed, give clear feedback, and respect people’s context

Trustworthy – Follow through, be transparent, and fix what you break

Flexible – Adapt to changing needs, focus on outcomes, and protect time for deep work

Company Benefits

Be part of a modern, inclusive, high-trust engineering culture

Take ownership and ship code that directly improves client outcomes

Work with a smart, friendly team that values balance, growth, and support

Pension 6% employer contribution, minimum 2% employee contribution.

BUPA Private Health Insurance – fully paid for by the company, for you and your immediate family.

Medicash Cashplan – fully paid for by the company, for you and your immediate family.

Travel insurance – fully paid for by the company, for you and your immediate family.

Life Assurance – 4 x base salary.

Employee Assistance Programme

28 days annual leave plus bank holidays.

Paid compassionate leave – up to 5 days per year.

Enhanced paternity/maternity/adoption leave – 16 weeks at full pay after 12 months of service.

Jury service – 10 days at full pay.

Hybrid working arrangements – 3 days per week in the Fitzrovia office.