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
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.
Responsibilities
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Architect, design, and build a scalable web platform from scratch (frontend and backend)
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Lead development of user-facing features using modern frameworks (React, Angular)
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Design and implement backend services, APIs, and microservices using Java
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Define data models, business logic, and API contracts
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Ensure high performance, security, scalability, and maintainability of the platform
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Collaborate closely with product managers, business stakeholders, and engineers in an Agile (SCRUM) environment
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Drive CI/CD processes, automated testing, and code quality standards
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Design and implement cloud infrastructure (preferably GCP) using Infrastructure as Code, containers (Docker, Kubernetes), and serverless services
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Mentor and support other engineers, promoting architectural standards and technical excellence
Requirements
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8+ years of professional software engineering experience
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3+ years in a Full Stack Engineer or Lead Engineer role delivering end-to-end web platforms
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Strong knowledge of modern frontend frameworks (React, Angular, or Vue)
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Solid backend experience with Java
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Experience designing RESTful APIs, microservices, and scalable system architectures
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Proven experience building platforms or tools from scratch
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Strong understanding of relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Cassandra) databases
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Experience with Git and modern version control workflows
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Ability to work independently, own technical decisions, and deliver with minimal supervision
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Excellent communication skills, able to explain complex technical concepts to technical and non-technical audiences
Nice to Have
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Experience with cloud platforms (GCP, AWS, Azure)
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Hands-on experience with DevOps practices: CI/CD, monitoring, auto-scaling, site reliability engineering
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Knowledge of Infrastructure as Code, Docker, Kubernetes
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Familiarity with data science tools (Pandas, NumPy, Jupyter Notebooks)
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Interest or experience in Generative AI frameworks and techniques
What’s Offered
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Hybrid work model with flexibility
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Private medical care
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Multisport card
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Flexible working hours
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Opportunity to build a high-impact platform used across a global organization