Senior Software Engineer (API migration)

Intellias; Poland; On-site; PLN 120,000 - 180,000; Full time

Job summary

Intellias is seeking a senior software engineer to drive a data and AI platform modernization for enterprise-scale capabilities, enabling real-time decision-making across global teams.

You will lead the development of robust server-side applications, integrate 3rd party APIs, and design scalable data architectures using Docker, Kubernetes, and AWS. You will apply AI-assisted tooling to accelerate coding, testing, and code reviews, while upholding security and Agile practices.

Qualifications

• 5+ years of software development experience.
• Strong TypeScript and Groovy skills.
• Experience with API integration and migration.
• Hands-on AWS cloud experience.
• Experience with AI coding assistants in development workflow.
• Experience with CI/CD pipelines.
• Proficient with git-flow and version control.
• Experience with Docker and Kubernetes.
• Knowledge of secure coding practices.
• Experience leading Agile teams.
• Experience with state management systems.
• Ability to review code and provide feedback.
• Excellent communication and organizational skills.
• Experience with Spectrum development/spec driving.

Responsibilities

• Lead development of robust server-side applications and services.
• Integrate third-party APIs.
• Design and maintain complex databases using ORM tools.
• Translate designs into reusable frontend components.
• Leverage AI-assisted development tools to accelerate coding, testing, and reviews.
• Apply AI-driven testing and debugging techniques.
• Collaborate with cross-functional teams to define architecture and APIs.
• Document changes, maintain React systems, and build new components.
• Develop and implement advanced security measures.
• Optimize code for performance, maintainability, and scalability.
• Implement and champion Agile methodologies.

Skills

TypeScript

Groovy

API integration

AWS

CI/CD

Git workflow

Security practices

Agile leadership

State management

Code review

Communication

Spectrum development

AI coding assistants

Tools

Docker

Kubernetes

Git

CI/CD pipelines

AWS

Copilot/Cursor

AI tooling

Job description

Let’s breathe life into great tech ideas! With 3,000 people globally, Intellias is a company where benchmark technological solutions are born. Join in and take your part in digitalizing the world.

What project we have for you

Join a transformative data and AI platform initiative aimed at modernizing enterprise-scale capabilities and enabling real-time decision-making. This project delivers a comprehensive roadmap covering AI, MLOps, data governance, and platform scalability, supporting a shift towards data-first operations and intelligent automation.

What you will do

• Be part of leading the development of highly robust and scalable server-side applications and services.
• Integrate 3rd parties APIs
• Design and maintain complex databases using Object-Relational Mapping (ORM) tools.
• Translating complex designs and wireframes into high-quality code and building reusable components and front-end libraries for future use.
• Leverage AI-assisted development tools to accelerate coding, refactoring, and code review workflows.
• Apply AI-driven approaches to test generation, debugging, and documentation to improve team velocity and code quality.
• Collaborating with cross-functional teams, product teams, and graphic designers to develop well-structured and flexible architecture, along with the APIs to support it.
• Documenting application changes, developing updates, maintaining existing React systems, and designing and developing new custom components to meet complex project requirements.
• Develop advanced security measures and ensure their proper implementation.
• Optimize and tune code for performance, maintainability, and scalability.
• Implement and champion Agile development methodologies.

What you need for this

• 5+ years of software development experience
• Extensive experience with TypeScript and Groovy
• Practical experience with API integration and migration
• Hands‑on experience with AWS cloud services
• Hands‑on experience integrating AI coding assistants (Copilot, Cursor, Claude, or similar) into daily development workflow.
• Practical understanding of how to prompt, validate, and review AI-generated code to maintain security and quality standards.
• Experience in setting up and managing CI/CD pipelines for production-grade applications.
• Proficient with git‑flow.
• Experience in containerization and orchestration technologies like Docker and Kubernetes.
• Deep understanding of cybersecurity principles, with experience in implementing secure systems and mitigating common security threats.
• Expert understanding of Agile methodologies, with experience in leading Agile teams.
• Strong experience with multiple state management systems and can determine the most suitable system for specific use cases.
• Ability to review code and provide structured feedback.
• Excellent communication skills, ability to stay organized, and push projects forward.
• At least one year experience with Spectrum development/Spec driving