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Staff Software engineer
London, UK
£120K - £180K plus equity
Permanent
Our client is building an AI workspace for document-heavy industries. The platform automates complex workflows, extracts high-value insights from unstructured documents, and enables enterprise teams to make faster, better decisions at scale.
You'll provide technical leadership across core product systems and shape the long-term architecture of a rapidly scaling AI platform.
What You’ll Do
Own and evolve core backend and AI systems used by enterprise customers
Architect scalable, production-grade solutions for:
Large-scale document extraction and interpretation
AI-driven workflow automation
Multi-step, agentic generation pipelines
Lead technical design across critical product areas, balancing speed, quality, and long-term maintainability
Work closely with product and commercial teams to translate real customer problems into robust technical solutions
Set engineering standards and mentor senior engineers through architecture reviews and technical guidance
Leverage AI-assisted development tools (e.g. Claude Code, Cursor, Copilot) to accelerate delivery
Drive continuous improvement in system reliability, performance, and security
What We’re Looking For
Proven experience operating at Staff or Principal level in high-growth or technically demanding environments
Deep expertise in Python and backend system design
Strong track record of owning business-critical systems from concept through production and scale
Experience building and maintaining high-quality APIs and integrations
Practical experience applying AI/LLM-based systems in real production environments
Excellent architectural judgment and the ability to make high-impact technical decisions
Clear, confident communicator who can influence across engineering, product, and leadership
Strong product intuition and commercial awareness
Nice to Have
Experience with agentic workflows, orchestration, or complex AI pipelines
Past experience in real estate, law, or finance
Experience designing modular or distributed systems
Open-source contributions or visible technical leadership
If you're looking to build s omething extraordinary, then apply today.
Founding Engineer
London, UK
£130K - £180K plus equity
Permanent
Founding Engineer – AI & Capital Markets
Our client is an early-stage startup building an AI-native operating system for capital markets and trading. The goal is to rethink how trading organisations operate by addressing a long-standing gap in the market: modern, flexible software that truly supports front-office and trading-adjacent workflows.
The company’s first product targets a high-impact middle-office problem—the reconciliation of exotic and complex trades. This is a painful, manual, and mission-critical process for trading firms today. From this wedge, the platform is designed to expand across the entire trading lifecycle, laying the groundwork for a category-defining system in capital markets.
What you’ll do
Architect and build the core platform from the ground up, making foundational decisions around scalability, data flows, and system design
Design systems that ingest and reason over complex financial data, including market data feeds and trading systems, in an environment where requirements evolve quickly
Take AI systems from concept to production, with responsibility for model serving, evaluation, monitoring, and reliability in enterprise settings
Act as a true Founding Engineer, owning critical technical decisions and working closely with the founders in a low-bureaucracy, high-impact environment
If you’re excited by capital markets and want to help define the future of how trading firms operate, this is a rare opportunity to build something foundational from day one. You’ll be working on real, high-stakes problems at the core of global markets—shaping technology that could become infrastructure for the next generation of trading. Apply today to be part of the founding journey.