Senior Software Engineer, Java

Telnyx LLC; Dublin; On-site; EUR 90,000 - 130,000; Full time

Job summary

Telnyx LLC is hiring a senior Java backend engineer to build and optimize a highly available data pipeline powering Voice, Messaging, and Wireless products. You will work on Java 21 and Scala microservices across regions, with emphasis on low latency and scalability.

Exposure to distributed systems, Docker, Kubernetes, and ML-enabled fraud detection will be advantageous. A degree in CS/IT and 4+ years of Java experience are expected.

Qualifications

• Degree in Computer Science, Information Technology, or equivalent.
• 4+ years of experience with Java and its ecosystem.
• Experience with Cassandra, ClickHouse, or OpenSearch.
• Experience with AI tooling, or a strong willingness to learn.

Responsibilities

• Work on 30+ microservices implemented in Java 21 and Scala to process, aggregate and expose data.
• Improve performance of the data pipeline; currently 10k messages/sec and growing.
• Architect services and pipelines for low latency across locations (US, EU, Australia, SA).
• Implement fraud detection processes with machine learning (Kafka and Kafka Streams).
• Deploy services to multi-cloud Kubernetes environments to achieve 99.999% uptime.
• Push code to production multiple times a day.

Skills

Java

Kafka

Kubernetes

Docker

Scala

Education

Degree in Computer Science / Information Technology

Tools

Kafka Streams

OpenSearch

Cassandra

ClickHouse

Job description

About Telnyx

technology right to your fingertips through intuitive APIs, we're shaping a new era of seamless interconnection between people, devices, and applications.

We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.

Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us, you can be part of laying the foundations for this interconnected future. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.

Our backend team is building a highly-available and distributed data pipeline that powers Telnyx products like Voice, Messaging and Wireless. We leverage the Telnyx private backbone network to build a cloud-agnostic data platform that processes thousands of messages per second.

About Telnyx

technology right to your fingertips through intuitive APIs, we're shaping a new era of seamless interconnection between people, devices, and applications.

We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.

Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us, you can be part of laying the foundations for this interconnected future. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.

Our backend team is building a highly-available and distributed data pipeline that powers Telnyx products like Voice, Messaging and Wireless. We leverage the Telnyx private backbone network to build a cloud-agnostic data platform that processes thousands of messages per second.

With our lean team, we're currently running and managing more than 30 dockerized microservices deployed in multiple regions in the U.S. and Europe. We are looking for a senior Java backend engineer with deep knowledge of Java Core.

In this role you will

• Work on 30+ microservices implemented in Java 21 and Scala that process, aggregate and expose all data our telecommunication and messaging engines generate
• Improve performance of our pipeline — we currently process 10k messages/sec and are growing
• Architect our services and pipelines so they work with minimum latency in all our locations around the world (U.S., E.U., Australia, South America)
• Implement fraud detection processes with machine learning (Kafka and Kafka Streams)
• Deploy services to multi-cloud Kubernetes environments to achieve 99.999% uptime
• Push code to production multiple times a day

What We're Looking For

• Degree in Computer Science, Information Technology, or equivalent work experience
• 4+ years of experience with Java and its ecosystem of tooling
• Experience with at least one of these databases: Cassandra, ClickHouse, or OpenSearch
• Experience with AI tooling, or a strong willingness to learn

Nice to have

• Experience with Scala or another functional programming language
• Experience with Linux, Git, and Docker in a CI environment
• Experience with distributed systems and systems that maintain "five nines" (99.999%) of uptime

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