Serve Clients / Tech & AISkill group: Aerospace & Defense, Automotive & Assembly, Electric Power & Natural Gas, High Tech, Industrials & Electronics, Media & Entertainment, Private Capital, TelecommunicationsRegion: EuropeLocations: London (United Kingdom)Posted (LinkedIn): 2026-02-04Created: 2026-02-04Apply: you'll work withDriving lasting impact and building long-term capabilities with our clients is not easy work. You are the kind of person who thrives in a high performance/high reward culture - doing hard things, picking yourself up when you stumble, and having the resilience to try another way forward. Every day, you'll receive apprenticeship, coaching, and exposure that will accelerate your growth in ways you won’t find anywhere else. Our learning and apprenticeship culture, backed by structured programs, is all about helping you grow while creating an environment where feedback is clear, actionable, and focused on your development. Global community: With colleagues across 65+ countries and over 100 different nationalities, our firm’s diversity fuels creativity and helps us come up with the best solutions for our clients. On top of a competitive salary (based on your location, experience, and skills), we provide a comprehensive benefits package to enable holistic well-being for you and your family.What you'll doAs a Software Engineer, you will collaborate with a global network of technologists, designers, and strategists to help clients transform their businesses through innovative digital solutions. In this role, you will work hands-on with clients across industries to bring their digital ambitions to life. You will develop software products and services from the ground up while coaching and mentoring client teams on engineering best practices, user-centric design, and Agile values. By co-creating with clients and their leadership, you’ll help build not only cutting-edge products but also the technical capabilities and cultures needed to sustain them. You will participate in cross-functional problem-solving sessions with client leaders, shaping their digital strategies and delivering solutions that go beyond the product itself. Your efforts will help clients build scalable teams and engineering cultures that enable long-term success. You will collaborate with clients across industries to turn their digital ambitions into reality through hands-on technical expertise. Based in one of our global locations, you will be part of QuantumBlack AI by McKinsey, a multidisciplinary group of software engineers, AI engineers, data scientists, and technology consultant passionate about creating industry-shaping products and tools. You’ll work across diverse industries and technologies, learning something new with every project. With opportunities to contribute to digital strategies, build impactful products, and mentor others, you’ll have the freedom to chart your own path and grow in the areas that excite you most.Your backgroundUndergraduate or master’s degree; or equivalent experience2-5+ years of experience developing full-stack applications by writing code that is readable, testable, maintainable, and scalableDemonstrated experience working collaboratively with other developers, as well as technical and non-technical people within software teams Hands-on experience and willingness to learn across frontend (TypeScript, React, Angular, Vue, Next.js, Tailwind), backend (Python, Node.js, Java/Spring, C#/.NET), and databases (SQL, NoSQL, vector databases, ETL)Experience with LLM frameworks, prompt orchestration, agent frameworks, MCPs, evaluation frameworks, and cloud platforms (Azure, AWS, GCP), including Docker and CI/CDStrong focus on automated testing, logging, monitoring, and overall system reliabilityExperience working in Agile teams, including active participation in sprint ceremoniesExperience pair programming collaboratively with other developersExceptional time management to meet your responsibilities in a complex and largely autonomous work environmentStrong communication skills, both verbal and written in English, with the ability to adjust your style to suit different perspectives and seniority levels
Software Engineer (Frontend / Full Stack) in London employer: McKinsey & Company
As a Category Manager for Facilities Management, you will join a dynamic and inclusive workplace that values collaboration and innovation. Our commitment to employee growth is reflected in our structured learning programmes and mentorship opportunities, ensuring you can develop your skills while making a meaningful impact on our global operations. With a competitive salary and comprehensive benefits package, we prioritise your well-being and foster a culture of respect and accountability across our diverse team of professionals from over 100 nationalities.
