This is us
At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development.
This is the job
We are looking for a Senior Java Engineer to join a project for a leading US streaming technology company transforming how people watch television.
You will contribute to a highly scalable, highly available, real-time advertising platform that supports a rapidly growing streaming business. Working with an experienced international engineering team, you will design and develop high-performance backend applications operating at scale.
This role is an excellent match for an engineer who has a strong command of Java, understands concurrency beyond the framework level, and enjoys solving complex performance and scalability challenges.
This is you
At least 5 years of professional experience in Java backend development
Hands-on experience building large-scale, low-latency distributed systems
Strong command of Java 11 or newer
Solid practical knowledge of Java Concurrency and multithreading
Experience with asynchronous programming in Java, including CompletableFuture
Good understanding of algorithms, data structures and performance optimization
Strong knowledge of object-oriented programming and software design principles
Basic understanding of high-load system design and scalability techniques
Basic practical knowledge of Kafka
English at B2 level or higher, enabling effective communication in an international teamX
Nice-to-have skills:
Experience with distributed caching
Experience working with SQL and NoSQL databases
Knowledge of AWS or other cloud platforms
Experience with Big Data technologies
Previous experience in adtech, streaming, media, fintech or another high-throughput domain
This is your role
Design, develop and maintain large-scale, highly available, real-time Java applications
Build efficient concurrent and asynchronous processing solutions
Investigate and resolve performance, scalability and reliability challenges
Write clean, maintainable and well-tested production code
Contribute to technical decisions, engineering standards and development best practices
Collaborate with engineers, product specialists and analytics teams on strategic initiatives
Identify technical gaps and operational problems and propose robust solutions
Communicate effectively with both technical and non-technical stakeholders
Take ownership of delivered solutions throughout the development lifecycle
What awaits you at Avenga?
At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.
5+ years of Java backend experience; Java 11+, concurrency, multithreading, asynchronous programming, distributed systems, algorithms, performance optimization, Kafka, scalability, and B2+ English.
Key Responsibilities
- developing applications
- optimizing performance
- collaborating with teams
Skills & Tools
Java, Java 11, CompletableFuture, Kafka, SQL, NoSQL, AWS
Job Details
- Category: Software Development
- Seniority: Senior Level
- Commitment: Full Time
- Workplace: Remote — Poland
- Languages: English
About Avenga
A global technology services company providing advisory, enterprise, design, managed, product, and software development services. — Industry: Information Technology