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Netrolynx AI

Java Developer

United Kingdom
Posted about 11 hours ago
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About The Company

Adecco is a global leader in human resource solutions, providing comprehensive staffing, consulting, and workforce management services across various industries. With a strong commitment to innovation and excellence, Adecco partners with organizations to deliver tailored talent solutions that drive business success. Our extensive network and industry expertise enable us to connect skilled professionals with leading companies worldwide, fostering growth and development for both clients and candidates.

About The Role

We are seeking a highly skilled Java Developer specializing in SIP/VoIP technologies to join our client’s dynamic team on a 6-month contract basis. This role is based in Ipswich with a hybrid working model, offering a unique opportunity to contribute to cutting-edge voice and communication platforms within the telecommunications industry. The ideal candidate will be involved in developing, enhancing, and supporting large-scale telecom services, leveraging cloud technologies and AI-powered voice solutions. You will work closely with cross-functional teams to deliver innovative voice communication solutions that meet the evolving needs of the industry.

Qualifications

  • Strong background in Java development with practical experience in telecoms or voice environments.
  • Proven track record in developing SIP-based applications.
  • Familiarity with SIP, VoIP, RTP/RTCP, and SDP protocols.
  • Experience working with frameworks such as JAIN SLEE and SIP Servlet.
  • Hands-on experience with VoIP platforms like FreeSWITCH or Asterisk.
  • Cloud deployment expertise across AWS, Azure, or GCP.
  • Strong troubleshooting skills and the ability to support complex voice systems.
  • Additional knowledge of telecoms security protocols, containerization tools like Docker and Kubernetes, and WebRTC will be advantageous.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

Start with a chat, not a search bar

Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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It searches the market for you

Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.

Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

Only hits

No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

Responsibilities

  • Develop and enhance SIP-based voice applications using Java, ensuring high performance and scalability.
  • Collaborate with cross-functional teams to design and implement voice communication solutions aligned with business requirements.
  • Support and integrate voice platforms including FreeSWITCH and Asterisk, ensuring seamless operation and performance.
  • Deploy and support voice solutions across cloud environments such as AWS, Azure, and GCP, maintaining optimal service availability.
  • Integrate advanced speech services, including Speech-to-Text, Text-to-Speech, and AI-driven voice functionalities, to enhance user experience.
  • Troubleshoot and resolve issues related to voice quality, call routing, and network performance, ensuring minimal downtime and high-quality service delivery.
  • Maintain comprehensive documentation of system configurations, processes, and troubleshooting procedures.
  • Stay updated with emerging telecoms and voice technology trends to continuously improve service offerings.

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Benefits

  • Competitive salary package.
  • Flexible working arrangements.
  • Opportunities for professional development within a leading telecoms organization.
  • Access to cutting-edge technology and involvement in innovative projects.
  • Collaborative work environment.
  • Ongoing training.
  • Chance to work with industry experts on impactful solutions.

Equal Opportunity

Our client is committed to creating an inclusive environment and is proud to be an equal opportunity employer. They value diversity and are dedicated to providing equal employment opportunities to all applicants regardless of race, gender, age, disability, sexual orientation, religion, or any other protected characteristic. They believe that a diverse workforce fosters innovation and drives success, and they actively encourage candidates from all backgrounds to apply.

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“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”

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Skills

Java
SIP
VoIP
RTP/RTCP
SDP
JAIN SLEE
SIP Servlet
FreeSWITCH
Asterisk
AWS
Azure
GCP
Docker
Kubernetes
WebRTC
AI Voice Solutions

Location

United Kingdom

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