Senior Software Architect & Tech Leader

McKinsey; Warszawa; Hybrid; PLN 240,000 - 360,000; Full time

Benefits offered by this job

World-class benefits

Job summary

McKinsey's QuantumBlack division seeks a senior technologist to lead architecture, influence technology choices, and mentor client teams towards Agile engineering excellence. You will shape product strategies, deliver scalable data-driven solutions, and collaborate with diverse industries to drive real impact.

You will work hands-on across frontend and backend stacks, drive LLM-related initiatives, and guide engineering culture and practices to ensure reliable, high-performance systems.

Qualifications

• Advanced degree or equivalent experience in computer science, ML, mathematics or engineering.
• 7+ years of software development with strong full-stack experience.
• Team collaboration with technical and non-technical stakeholders.
• Hands-on across frontend and backend stacks with modern frameworks.
• Experience with LLM frameworks, agent orchestration, and cloud platforms.
• Commitment to automated testing, observability, and reliability.
• Strong practices in design patterns, TDD, refactoring and security.
• Leadership in Agile teams and coaching of developers.

Responsibilities

• Lead architecture design and key technology decisions.
• Mentor clients to adopt Agile engineering practices.
• Co-create scalable, user-centric products with teams.
• Drive delivery of next-generation solutions across industries.
• Partner with client leadership to shape digital strategies.

Skills

Full-stack development

Frontend technologies

Backend technologies

TypeScript

React

Angular

Vue

Next.js

Tailwind

Python

Node.js

Java/Spring

C#/.NET

SQL

NoSQL

Vector databases

ETL

LLM frameworks

Azure

AWS

GCP

Docker

CI/CD

Agile

Mentoring

Education

Bachelor's to PhD in CS/ML/Math/Engineering

Tools

Docker

Cloud platforms

SQL

NoSQL

Vector databases

CI/CD tooling

Job description

McKinsey's QuantumBlack division seeks a senior technologist to lead architecture, influence technology choices, and mentor client teams towards Agile engineering excellence. You will shape product strategies, deliver scalable data-driven solutions, and collaborate with diverse industries to drive real impact.

You will work hands-on across frontend and backend stacks, drive LLM-related initiatives, and guide engineering culture and practices to ensure reliable, high-performance systems.