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Senior Software Engineer (Java)

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Onsite

Senior Software Engineer (Java)

Pros

Senior Software Engineer (Java)

Skills

SQL QueriesDockerJavaTesting & QAMicroservicesJenkinsAIKubernetesJiraConfluenceWorkdayKanbanAzure

2 months ago

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Important information


Contract type:

Permanent

Location:

Sofia, Bulgaria

Work mode:

Onsite

Published on:

29 August 2026

What they need


A Day in the Life of the Senior Software Engineer (Java) - About the role:

  • Design and develop reusable software components using Java 21 for our cloud-native microservices-based software platform with an emphasis on scalability and performance
  • Design and develop high-volume, low-latency applications and deliver high-availability and performance
  • Autonomous and being able to take design/development decisions
  • Collaborate with a talented international team of technical and product experts to design system functionality
  • Join forces with tech leads and architects to incorporate industry best practices and company standards
  • Leverage AI-powered tools and emerging technologies to improve efficiency, enhance decision-making, and drive innovation within day-to-day responsibilities
  • Participate in code reviews, pair programming, and knowledge exchange with colleagues
  • Conduct research to solve problems and drive continuous technical improvements
  • Contribute to technical documentation
  • Create unit and integration tests and assist the QA team in validation testing
  • Efficiently utilize DevOps tools and practices to build and deploy software
  • Support the DevOps/Cloud Services team in case of deployment or production issues​

Required Qualifications - About you:

  • 5+ years of experience developing large-scale complex Java applications
  • Experience in the travel industry with Airline IT knowledge
  • Proficiency in server-side REST API development
  • Experience in advanced topics like multi-threading, streaming, messaging, performance optimization, and horizontal scalability
  • Experience working with SQL and NoSQL technologies
  • Understanding of OOP, design patterns, SOLID principles, and modern microservices architecture
  • Awareness of algorithmic complexity principles and knowledge of java classical data structures time and space complexity
  • Outstanding analytical, problem-solving, verbal & written communication skills
  • Willingness to learn new technologies in depth
  • Curious and willing to learn strong functional domain

​

Highly Preferred:

  • University degree in Computer Science or related field
  • Familiarity with MS Azure or another cloud platform
  • Experience with AI tools and usage of it
  • Experience with an Agile development process (Scrum, Kanban)
  • Experience with Behavior and/or Test-Driven Development (BDD/TDD)
  • Familiarity with Jenkins or other CI/CD products
  • Working knowledge of Git, Jira, and Confluence
  • Knowledge of Docker and Kubernetes

​

AI Fluency & Growth Mindset- We welcome candidates who:

  • Understand core AI concepts and apply them ethically to enhance productivity, insights, and decision-making.
  • Craft effective prompts to optimize the quality and relevance of AI-generated outputs.
  • Explore and apply agentic AI systems, using or managing autonomous agents to streamline workflows and automate tasks.
  • Leverage AI tools to boost efficiency, creativity, and innovation in their daily work.
  • Stay curious and adaptable, continuously experimenting with AI-driven solutions to elevate team performance and customer impact.

Why Join PROS?

PROS culture and its extraordinary people are at the core of our success. We are passionate about what we do and relentless in delivering on our promises.

Our commitment to customer success inspires us to think smarter and dream bigger, empowering airlines to achieve more than they ever imagined through intelligent offer and revenue optimization.

At PROS, we foster a culture of care, where people feel supported to grow, innovate, and bring their best selves to work—every day. From flexible ways of working to continuous learning, we empower our teams to thrive both personally and professionally.

Join PROS, a dedicated travel technology company with nearly 40 years of proven airline expertise and a long runway for future growth, now powering the future of AI-driven airline retailing. If you want to be part of something exceptional, help us shape how airlines compete, innovate, and win.

PROS Core Values

  • We are Owners

We look for every opportunity to create a better PROS and a better experience for our customers – and we hold ourselves accountable.

  • We are Innovators

We think creatively to find new paths to success – for our people, our customers and our business.

  • We Care

We are centered on caring for the people, businesses, and communities we serve.

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