Senior Software Engineer – QuantumBlack, AI by McKinsey

Company: McKinsey & Company
Apply for the Senior Software Engineer – QuantumBlack, AI by McKinsey
Location: London
Job Description:

Overview

As a Senior Software Engineer at McKinsey’s QuantumBlack AI, you drive architecture, technology choices, and co-create scalable, user-centric products. You will mentor clients in Agile practices and engineering excellence, leading cross-functional workstreams and shaping digital strategies. Expect diverse industry exposure, hands-on collaboration, and opportunities to grow as a technology leader in a high-performance, innovation-driven culture. Your work helps scale engineering capabilities and deliver lasting client impact.

Pay / Benefits

  • competitive salary
  • comprehensive benefits package
  • global community across 65+ countries
  • continuous learning and apprenticeship culture
  • mentorship and development opportunities

Responsibilities

  • Lead architecture design and key technology decisions for scalable products
  • Co-create solutions with client teams and mentor them in Agile practices
  • Direct project workstreams and drive delivery of impactful, user-centric software
  • Shape technical strategy and ensure engineering excellence across teams
  • Collaborate with client leadership to influence digital strategies and growth

Key requirements

  • 7-8+ years in software development with strong full-stack web experience
  • Experience across frontend (TypeScript, React, Angular, Vue, Next.js, Tailwind) and backend (Python, Node.js, Java/Spring, C#/.NET)
  • Proficiency with databases (SQL, NoSQL, vector databases, ETL) and cloud platforms (Azure, AWS, GCP)
  • Hands-on with LLM frameworks, prompt orchestration, agent frameworks, and containerization (Docker) plus CI/CD
  • Strong focus on automated testing, logging, monitoring, and reliability
  • Experience coaching engineering best practices and leading Agile teams
  • Excellent time management and English communication skills
  • Collaborative mindset
  • Strong communication and stakeholder engagement
  • Mentorship and coaching
  • Frontend: TypeScript, React, Angular, Vue, Next.js, Tailwind
  • Backend: Python, Node.js, Java/Spring, C#/.NET
  • Databases: SQL, NoSQL, vector databases, ETL

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Posted: October 2nd, 2026