Full-Stack Engineer: Shape AI-Driven Digital Transformations

McKinsey; Warszawa; Hybrid; PLN 180,000 - 280,000; Full time

Job summary

McKinsey’s QuantumBlack invites you to join a global team of software engineers, data scientists and designers to build cutting‑edge digital products. You’ll mentor client teams and shape engineering cultures while growing your expertise across diverse industries and technologies.

You will work hands‑on with clients, apply Agile principles, and coach on user‑centric design and engineering best practices as you help transform digital strategies into scalable, industry‑defining solutions.

Qualifications

• Undergraduate or master’s degree; or equivalent experience.
• 2+ years of experience developing full‑stack applications with readable, testable code.
• Collaborative work with developers and non-technical stakeholders.
• Hands-on across frontend (TypeScript, React, Angular, Vue, Next.js, Tailwind) and backend (Python, Node.js, Java/Spring, C#/.NET) and databases (SQL, NoSQL, vector DB, ETL).
• Experience with LLM frameworks, prompt orchestration, agent frameworks, MCPs, evaluation frameworks, and cloud platforms (Azure, AWS, GCP), including Docker and CI/CD.
• Strong focus on automated testing, logging, monitoring, and reliability.
• Experience in Agile teams and sprint ceremonies; pair programming encouraged.
• Excellent time management and clear English communication, with ability to adapt style.

Responsibilities

• Collaborate with a global network to transform client businesses through digital solutions.
• Develop software products from the ground up and mentor client teams on engineering best practices.
• Coach on user-centric design and Agile values while growing technical leadership.
• Work hands-on with clients across industries to turn digital ambitions into reality.
• Help build scalable teams and engineering cultures for long-term success.

Skills

Full-stack development

TypeScript

React

Angular

Vue

Next.js

Tailwind

Python

Node.js

Java/Spring

C#/.NET

SQL

NoSQL

ETL

LLM frameworks

prompt orchestration

CI/CD

Docker

Azure

AWS

GCP

Agile

Education

Undergraduate or Master’s degree; or equivalent experience

Tools

Docker

CI/CD

Azure

AWS

GCP

Job description

McKinsey’s QuantumBlack invites you to join a global team of software engineers, data scientists and designers to build cutting‑edge digital products. You’ll mentor client teams and shape engineering cultures while growing your expertise across diverse industries and technologies.

You will work hands‑on with clients, apply Agile principles, and coach on user‑centric design and engineering best practices as you help transform digital strategies into scalable, industry‑defining solutions.