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About the Role

Serve as one of the most senior Individual Contributors (ICs) on the engineering team in a player-coach role (~70% IC, ~30% technical leverage, mentoring, and architectural leadership). Own complex, ambiguous problem spaces end-to-end, transitioning them from concept to shipped production code.

Responsibilities

• Lead the design and development of core systems powering AI agents, LLM evaluations, high-throughput data pipelines, and robust provider waterfall systems.
• Transition ambiguous, cross-cutting problems from initial concept to shipped production code, ensuring real-world performance is measured and optimized.
• Maintain a clean, scalable, and highly performant codebase, making long-term architectural decisions.
• Raise the engineering bar by authoring technical design documents, conducting code reviews, and mentoring engineers.
• Partner with founders and Head of Engineering to shape technical strategy, product roadmap, and system scalability.
• Engage with customer feedback and product usage metrics to design, build, and deploy enhancements.

Requirements

• Proven experience at a top-tier, high-velocity technology company (e.g., FAANG, Bloomberg, Stripe, Shopify, Revolut, Datadog, or high-growth, venture-backed scale-ups/YC alumni).
• 6+ years of production-level software engineering experience with a demonstrated capability of operating independently on "zero-to-one" initiatives.
• Absolute willingness and ability to work on-site 5 days a week at the Piccadilly, London office.
• Strong preference for shipping high-quality, working iterations quickly.
• Exceptional written and verbal communication skills, with the ability to articulate complex technical decisions through structured design documents.

Skills

• TypeScript
• Modern web infrastructure
• Next.js (App Router)
• Trigger.dev
• Postgres/Drizzle
• Systems thinking
• Distributed architectures
• Background job infrastructure
• Scalable data pipelines
• LLM-based systems
• Prompt engineering
• Structured outputs
• Evaluations
• Agentic workflows

Location

• London, England, GB
• Piccadilly, London

Work Type

• On-Site
• Full-time

Experience Level

• Staff Engineer
• 6+ years of production-level software engineering experience

Salary/Compensations

• £110K - £150K GBP

Benefits

• Market-leading salary
• Highly flexible equity/stock-for-salary trade-off
• Private health insurance
• Dental coverage
• Competitive pension scheme
• Fully catered late-evening support
• Company-funded dinner for late work
• Company-funded taxi transportation home for late work
• Full visa sponsorship

About the Company

• High-velocity, London-based applied research lab reshaping the future of B2B operations and sales.
• Empowers businesses to focus on deep, high-value human connections by building intelligent, agentic workflows and automating high-volume execution.
• Talent-dense, seed-stage, revenue-generating startup.
• Ships to production daily, tackles highly ambiguous engineering challenges, and works at the cutting edge of AI capabilities.

Equal Opportunity

• MLabs is committed to offering equal opportunities to all candidates.
• Ensures no discrimination, accessible job adverts, and providing information in accessible formats.
• Fosters a diverse, inclusive workplace with equal opportunities for all.
• Provides reasonable adjustments during the hiring process.
• Offers job adverts in accessible formats upon request.