Senior Software Engineera (Lead Full Stack)

Senior Software Engineer (Lead Full Stack Engineer)

Location: Kraków (hybrid model – 2 days per week from the office)
Industry: FinTech / Risk & Compliance Technology
Contract type: B2B
Rate: 180–210 PLN/hour

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About the Role

We are looking for an experienced Senior Software Engineer / Lead Full Stack Engineer to join a global Risk & Compliance technology team within a large international financial organization (client name confidential).

You will play a key role in designing and building a brand-new internal web platform - Design Management Tool (DMT) - created to support end-to-end Business Architecture Design Management.

The platform will automate, standardize, and optimize architecture design processes, enabling design capture, compliance checks, optimization workflows, and advanced analytics. This is a greenfield project with real impact across global business units.

This role is ideal for someone who enjoys ownership, architectural decision-making, and hands-on development across the full technology stack.

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Responsibilities

• Architect, design, and build a scalable web platform from scratch (frontend and backend)

• Lead development of user-facing features using modern frameworks (React, Angular)

• Design and implement backend services, APIs, and microservices using Java

• Define data models, business logic, and API contracts

• Ensure high performance, security, scalability, and maintainability of the platform

• Collaborate closely with product managers, business stakeholders, and engineers in an Agile (SCRUM) environment

• Drive CI/CD processes, automated testing, and code quality standards

• Design and implement cloud infrastructure (preferably GCP) using Infrastructure as Code, containers (Docker, Kubernetes), and serverless services

• Mentor and support other engineers, promoting architectural standards and technical excellence

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Requirements

• 8+ years of professional software engineering experience

• 3+ years in a Full Stack Engineer or Lead Engineer role delivering end-to-end web platforms

• Strong knowledge of modern frontend frameworks (React, Angular, or Vue)

• Solid backend experience with Java

• Experience designing RESTful APIs, microservices, and scalable system architectures

• Proven experience building platforms or tools from scratch

• Strong understanding of relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Cassandra) databases

• Experience with Git and modern version control workflows

• Ability to work independently, own technical decisions, and deliver with minimal supervision

• Excellent communication skills, able to explain complex technical concepts to technical and non-technical audiences

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Nice to Have

• Experience with cloud platforms (GCP, AWS, Azure)

• Hands-on experience with DevOps practices: CI/CD, monitoring, auto-scaling, site reliability engineering

• Knowledge of Infrastructure as Code, Docker, Kubernetes

• Familiarity with data science tools (Pandas, NumPy, Jupyter Notebooks)

• Interest or experience in Generative AI frameworks and techniques

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What’s Offered

• Hybrid work model with flexibility

• Private medical care

• Multisport card

• Flexible working hours

• Opportunity to build a high-impact platform used across a global organization