Lead Full-Stack Engineer: AI-Enabled Enterprise Apps

Citigroup Inc.; Warszawa; On-site; PLN 242,000 - 412,000; Full time

Benefits offered by this job

Pension plan

Private medical care

Life insurance

Employee assistance program

Parental leave

Sport card

Holidays allowance

Cafeteria/flex benefits

Annual incentive award

Employee discounts

Job summary

Citigroup Inc. in Warsaw is seeking an experienced Lead Software Engineer to drive design, development, and modernization of enterprise-scale applications. You will lead teams while remaining hands-on with Angular, Java, and Spring Boot.

You will work with management, architects, and leads to build scalable, maintainable applications, support external resources, and contribute to AI-enabled capabilities. Hybrid model with up to 2 days remote per week.

Qualifications

• Bachelor’s degree or equivalent experience required.
• Experience in Financial Services or a large complex/global environment.
• Strong written and verbal communication.
• Ability to work in a matrix environment and partner with virtual teams.
• Demonstrated analytic/diagnostic skills.
• Project management experience.
• Proven track record of operational process change and improvement.

Responsibilities

• Lead the technical design and development of enterprise applications using Angular, Java and Spring Boot.
• Remain hands-on in coding, particularly for complex features and integrations.
• Provide day-to-day technical guidance to engineers and contractors, including code reviews and troubleshooting.
• Design and develop scalable REST APIs, microservices and frontend-backend integrations.
• Establish engineering standards for frontend architecture and performance.
• Collaborate with data and platform engineers to integrate data services and asynchronous processing.
• Contribute to AI-enabled features and LLM-based service integration.
• Translate requirements into practical designs and deliverable solutions.
• Champion automated testing, CI/CD, code quality, secure development and reliability.
• Identify technical risks and mentor engineers to ensure ownership of solutions.

Skills

Angular

Java/Spring Boot

Technical leadership

Architectural design

REST APIs

CI/CD

Mentoring

Communication skills

Education

Bachelor’s degree/University degree or equivalent experience

Master’s degree preferred

Job description

Citigroup Inc. in Warsaw is seeking an experienced Lead Software Engineer to drive design, development, and modernization of enterprise-scale applications. You will lead teams while remaining hands-on with Angular, Java, and Spring Boot.

You will work with management, architects, and leads to build scalable, maintainable applications, support external resources, and contribute to AI-enabled capabilities. Hybrid model with up to 2 days remote per week.