Senior Software Engineer: Architecture Lead & Agile Mentor

McKinsey; Greater London; Hybrid; GBP 100,000 - 180,000; Full time

Benefits offered by this job

Competitive salary

Global community

Comprehensive benefits

Job summary

McKinsey’s QuantumBlack AI unit seeks a Senior Software Engineer to lead architecture design, drive technology decisions, and co-create innovative products. You will mentor clients to adopt Agile practices and engineering excellence, shaping scalable solutions across industries.

Based in one of our global locations, you’ll collaborate with client teams, influence digital strategies, and grow as a technology leader within a diverse, high-performance environment.

Qualifications

• Bachelor's/Master's/PhD in CS, ML, math, engineering, or AI.
• 7–8+ years in software development with full-stack exp.
• Experience collaborating with diverse teams and stakeholders.
• Hands-on with frontend (TypeScript/React/Angular/Vue/Next.js/Tailwind) and backend (Python/Node/Java/.NET) and databases (SQL/NoSQL).
• Experience with LLM frameworks, prompt orchestration, agent frameworks, MCPs, evaluation frameworks, and cloud platforms (Azure/AWS/GCP); Docker and CI/CD.
• Strong focus on automated testing, logging, monitoring, and reliability.
• Modeling and coaching best practices: design patterns, TDD, code reviews, OWASP Top 10.

Responsibilities

• Lead architecture design and drive technology decisions.
• Co-create innovative products and mentor clients in Agile engineering excellence.
• Lead project workstreams and shape technical strategies for scalable solutions.
• Collaborate with client leadership to influence digital strategies and engineering culture.

Skills

Full-stack development

Cloud platforms

Agile

Architecture design

Mentoring

LLM frameworks

Code quality

Communication

Testing

Design patterns

Education

Bachelor's/Master's/PhD in CS/ML/Math/Engineering/AI

Tools

TypeScript

React

Angular

Vue

Next.js

Tailwind

Python

Node.js

Java/Spring

C#/.NET

SQL

NoSQL

Vector databases

ETL

Docker

CI/CD

Azure

AWS

GCP

LLM frameworks

Prompt orchestration

Agent frameworks

Job description

McKinsey’s QuantumBlack AI unit seeks a Senior Software Engineer to lead architecture design, drive technology decisions, and co-create innovative products. You will mentor clients to adopt Agile practices and engineering excellence, shaping scalable solutions across industries.

Based in one of our global locations, you’ll collaborate with client teams, influence digital strategies, and grow as a technology leader within a diverse, high-performance environment.