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Netrolynx AI

Java Developer

United Kingdom
Posted about 10 hours ago
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About The Company

Adecco is a global leader in workforce solutions, providing a wide range of staffing and consulting services across various industries. With a strong presence in over 60 countries, Adecco specializes in connecting talented professionals with innovative organizations to foster growth and success. The company is committed to delivering high-quality recruitment services, workforce management, and HR solutions tailored to meet the unique needs of each client. Adecco prides itself on its extensive network, industry expertise, and dedication to creating sustainable employment opportunities, making it a trusted partner for both job seekers and employers worldwide.

About The Role

We are seeking a highly skilled Java Developer with expertise in SIP/VoIP technologies to join our client's dynamic team on a 6-month contract basis, inside IR35. This role is based in Ipswich with a hybrid working model, offering an exciting opportunity to contribute to the development of next-generation voice and communication platforms. The successful candidate will play a pivotal role in designing, developing, and maintaining large-scale telecom services, leveraging cloud technologies and AI-powered voice solutions. You will collaborate with cross-functional teams to deliver innovative voice applications and ensure optimal performance, security, and reliability of telecom systems.

Qualifications

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.

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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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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.

The ideal candidate will possess a strong background in Java development, with proven experience in telecom and voice communication environments. A comprehensive understanding of SIP, VoIP, RTP/RTCP, and SDP protocols is essential. Candidates should have hands-on experience with SIP frameworks such as JAIN SLEE and SIP Servlet, as well as familiarity with voice platforms like FreeSWITCH and Asterisk. Cloud platform experience across AWS, Azure, or GCP is required, along with excellent troubleshooting skills in telecoms or voice environments. A degree in Computer Science, Telecommunications, or a related field is preferred, along with relevant certifications in cloud or telecom technologies.

Responsibilities

  • Develop and enhance SIP-based voice applications using Java, ensuring scalability and performance.
  • Work with JAIN SLEE and SIP Servlet frameworks to build robust voice communication solutions.
  • Support and integrate voice platforms including FreeSWITCH and Asterisk, ensuring seamless operation and interoperability.
  • Deploy and manage voice solutions across cloud platforms such as AWS, Azure, and GCP, optimizing for security and efficiency.
  • 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 to maintain high service availability.
  • Collaborate with cross-disciplinary teams to implement new features and improve existing systems.
  • Maintain documentation of system configurations, processes, and updates for knowledge sharing and compliance.

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Benefits

Our client offers a competitive benefits package that includes flexible working arrangements, opportunities for professional development, and exposure to cutting-edge telecom and cloud technologies. Employees will have access to a supportive work environment that encourages innovation and continuous learning. Additional benefits may include health and wellness programs, paid time off, and performance-based incentives. This role provides a unique opportunity to work on impactful projects within a forward-thinking organization committed to technological advancement and employee growth.

Equal Opportunity

Our client is an equal opportunity employer committed to fostering an inclusive environment for all employees. They value diversity and are dedicated to ensuring equal employment opportunities regardless of race, gender, age, religion, disability, or any other characteristic protected by law. They believe that a diverse workforce enhances creativity, innovation, and overall organizational success. All qualified applicants will receive consideration for employment without regard to any protected status.

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Skills

Java
SIP
VoIP
RTP/RTCP
SDP
JAIN SLEE
SIP Servlet
FreeSWITCH
Asterisk
AWS
Azure
GCP
Speech-to-Text
Text-to-Speech
AI Voice Solutions
Telecoms Troubleshooting

Location

United Kingdom

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