Teltonika

Java Backend Engineer (High-Load Systems)

Teltonika  •  Vilnius, LT (Hybrid)  •  19 days ago
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Job Description


We are looking for a Senior Java Backend Engineer to join our R&D team and work on the core backend infrastructure of our security platform.

Our servers power building and vehicle security systems and mobile applications that communicate with the platform in real time. The system is already in production and continuously evolving as the number of connected devices and integrations grows.

In this role you will :

  • Design and develop backend services in Java,
  • build and maintain REST APIs,
  • work with SQL databases, and address challenges related to performance, scalability, reliability, and long-running connections.

You will work on real systems that operate continuously and require stable, well-engineered backend architecture.

We are expanding the backend team to strengthen the platform and share ownership of a system that is already running in production and growing.

Requirements

  • At least 3 years of experience developing backend systems with Java (Java 8 or newer).
  • Experience developing REST APIs and server-side services
  • Experience with ORM solutions (Hibernate or similar).
  • Experience using build tools (Maven or Gradle).
  • Experience working with SQL databases (MySQL or other DBMS).
  • Experience developing or maintaining high-load backend systems
  • Strong understanding of OOP principles, system architecture, and software design
  • Experience modernizing or migrating legacy systems (e.g., upgrading to newer Java versions).
  • Experience with Git and working with code reviews

Nice to Have

    • Experience with GWT (Google Web Toolkit)
    • Experience optimizing high-load systems (performance tuning).
    • Experience working with legacy systems
    • Experience writing test cases and testing scenarios
    • Understanding of binary logic fundamentals

Benefits

  • Opportunities to grow in a strong and rapidly expanding international company.
  • Exposure to complex, industrial-grade security systems and ambitious technical projects.
  • A culture where curiosity and knowledge-sharing are core values.
  • The opportunity to grow, create, and improve along with the team and the company's growth.
  • The opportunity to realize yourself, learn, and take a significant position in the process of creating new products.
  • Flexible working hours, hybrid work options.
  • Company-paid sports activities (basketball, football, volleyball, yoga) and other sports initiatives.
  • Team events, summer festivals, and regular team-building activities.
  • Additional bonuses through the employee recommendation program.
  • Birthday gifts and rewards for work anniversaries.

    Salary:

We appreciate everyone's efforts and experiences, so we offer an attractive salary that will match your skillset and expertise in the field. The salary for this position ranges from 24 Eur/h up to 35 Eur/h (~4000 Eur – ~5840 Eur) pre-tax, depending on your experience and expertise.

*In an employment agreement we specify and define a fixed (tariff) hourly salary rate before taxes.

Teltonika

About Teltonika

Teltonika is a rapidly growing company group with considerable experience in the design, manufacturing, and B2B sales of high-quality IoT devices. We believe in the future of IoT just as strongly as the founder of Teltonika believed in it when he started this business in 1998.

We strive for innovation and generate new ideas on developing disruptive technologies that would help people and have everlasting value. We aspire to become one of the global leaders in providing unique IoT solutions that contribute to making people’s lives easier.

Easy Key to IoT! This is the name of our long-standing campaign that aims at making the experience with our products easy and user-friendly.

🔹 Dedication to our clients:

We always aim to provide professional services to our clients. We focus on quality, reliability, and ease-of-use of our products and services because we value our clients, their time, and efforts. We invest not only our hard work in building our products but also our knowledge and expertise in helping clients with their projects and supporting them along the way.

We believe in caring and nurturing business relationships which help both sides to grow and unlock full potential. Teltonika’s mission is to be close to clients on every continent of the world to help them in any question and contribute to making their projects successful.

🔹 Dedication to our employees:

While proactively searching for new ideas and new ways on how to create more value for our clients, we also hope to create a better future for our employees. We are always ready to welcome curious, inventive, and creative professionals to our teams on every continent.

We care for our employees’ ambitions and ensure that they have opportunities to train, broaden their knowledge, advance their careers, and grow together with Teltonika. We motivate them to pursue their personal and professional goals.

Industry
Telecommunications
Company Size
501-1,000 employees
Headquarters
Vilnius, LT
Year Founded
1998
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