Sr. Backend Engineer – Java & AWS

We're Hiring: Sr. Backend Engineer – Java & AWS

Remote – Europe

Conversational English

Kronia is the next-generation partner for Digital Transformation. With the mission to accelerate the digital state of companies worldwide, Kronia® focuses on Cloud, Data and AI strategy and execution while delivering a comprehensive Cybersecurity framework and a comprehensive set of IT services. We believe in a high trust and performance culture that shapes how our professionals proudly represent our brand with every service and project we operate. Kronia® is the pioneer IT brand revolutionizing the workplace with an innovation ecosystem through talent, services, products and solutions with strong industry know-how and expertise. Our remote-native culture and systematic approach to developing modernized IT skills and driving high performance bring differentiated value to our clients. Kronia® is the place where the best tech talent on earth can secure a distinguished and personalized life and career experience.

Are you ready to drive impactful solutions and lead talented engineering teams?

Join our team as a Senior Backend Developer, where you will lead the design, development, and optimization of scalable backend services using Java and serverless technologies like AWS Lambda. You will architect RESTful APIs and event-driven systems for high-performance, distributed applications while mentoring a team of talented engineers.

What you’ll do:

· Design and development of scalable backend services using Java and serverless frameworks (e.g., AWS Lambda).

· Architect RESTful APIs and event-driven systems to support distributed applications.

· Provide technical leadership, ensuring alignment with architectural standards and best practices.

· Collaborate with Product Managers, Architects, and engineering leads to deliver impactful solutions.

· Fostering a culture of continuous learning.

· Oversee CI/CD pipelines for efficient and reliable software delivery.

· Contribute to front-end components (React or Web Components) when needed.

· Optimize existing services for performance, scalability, and cost-efficiency.

· Create comprehensive documentation and perform peer reviews to ensure code quality.

What we’re looking for:

· 8+ years of backend development experience with deep proficiency in Java and hands-on serverless (e.g. AWS Lambda).

· Experience designing and managing distributed systems with advanced data modeling.

· Practical expertise in AWS services (e.g. Lambdas, DynamoDB, API Gateway, SNS/SQS, EventBridge).

· Strong understanding of software development best practices (design patterns, TDD, clean code).

· Experience implementing CI/CD pipelines and modern DevOps practices.

· Strong collaboration skills with cross-functional teams in Europe and the USA.

· Excellent communication skills in English (fluent conversational).

· Problem-solving mindset with the ability to make strategic technical decisions.

Nice to have:

· Frontend technologies (React, Angular, Web Components)

· Observability tools (CloudWatch, New Relic, Datadog)

· NoSQL data modeling experience

· AI/ML understanding

· Agile methodologies (Scrum/Kanban)

Interested or know someone who might fit?

DM me for details or apply directly; [email protected]

Let’s connect and explore this opportunity together!

Job Types: Full-time, Contract

Pay: 40,000.00zł - 42,000.00zł per month

Work Location: Remote