Summa Networks
Java Software Engineer for Telecoms
Summa NetworksSpain10 days ago
Full-timeRemote FriendlyEngineering, Information Technology

Summa Networks develops and delivers state-of-the-art telecom products to meet the higher requirements of carriers. Summa Networks NextGen, our product suite, includes a full-featured converged HSS and HLR on top of a unified subscriber database, an extended control plane for 5G a PCRF/PCF, an SMSC/SMSF, an IMS core...


The NextGen HSS implements LTE HSS, IMS HSS and HLR based on Rel-16 of the 3GPP standards. Thanks to the features and protocols, our NextGen HSS enables smooth interworking between 2G, 3G, 4G, 5G NSA and 5G. Our NextGen HSS features include Multi-SIM-IMSI-MSISDN, Roaming controls, SOAP API, AUC, EIR, DNS/ENUM, Lawful Interception, EIR, AAA for VoLTE and VoWiFi evolving into 5G UDM, UDR and AUSF on R17-R18. Especially well suited for IoT as it is based on 3GPP Release 14/15/16, it allows NB-IoT, CatM, etc. 


We are expanding our business and to reinforce our team we are currently looking for:


Java Developer(s)

 The role

  • You will collaborate in the design and development of our flagship products, NextGen HLR/HSS, PCRF/PCF, AAA and rest of the portfolio
  • You will create and maintain product documentation
  • You will create and maintain tests for the products
  • You will research and recommend new approaches in development methodologies and techniques
  • You will study and implement various telecom interfaces and protocols

To succeed in your role the following is required

  • You are an inspired and motivated Java Developer with at least 3 years of experience
  • You have knowledge of Linux as it is the main operating system used in the company
  • You have experience in version control (Git, SVN)
  • Your English is fluent since you will be working in an international team spread out across Europe
  • Automated testing experience with Junit or Testing
  • Experience in Cloud Native development and deployment. Kubernetes, Docker...
  • You are proactive and eager to learn
  • You are based in Spain

These are considered a plus:

  • Experience with IoC (Guice and Spring Boot)
  • Experience in Java Design Patterns
  • Good knowledge of Hibernate, Databases like MySQL, Redis, MongoDB
  • Knowledge on C, C++, Go, Rust is a big plus
  • Multi-threading


What do we offer?

We are immersed in a growth process as we gain traction with new clients and projects. We offer you a place where you can challenge yourself in an exciting environment around the bleeding-edge technologies in the Mobile Telephony world. You will be working in creating 5G solutions for the future of the communications industry.

Our company is organized mostly as a remote working organization (which we have been since we were founded and well before COVID-19 situation) with daily and continuous contact and some offline touchpoints for team building and face2face meetings. 

Would you like to join us? Who does not want to be part of the Cloud Telecoms revolution?

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