Software Developer

About The Company Rubicon Consulting is a leading talent management consultancy dedicated to helping organizations optimize their business performance and gain a competitive advantage through strategic talent acquisition and management. With a focus on delivering tailored staffing solutions across various industries, Rubicon Consulting prides itself on its deep industry expertise, innovative approach, and commitment to excellence. The company partners with clients to understand their unique needs and provides top-tier professionals who drive growth and success. Through a comprehensive understanding of market trends and a robust network of skilled candidates, Rubicon Consulting ensures that organizations find the right talent to meet their objectives efficiently and effectively. About The Role Rubicon Consulting is currently recruiting for a Software Developer on a 4+ year contract based in Suffolk. The successful candidate will serve as a Voice Services Developer, responsible for building, maintaining, and optimizing next-generation communication platforms. This role requires a blend of telecommunication protocol expertise and modern cloud-based AI integration. The developer will focus on creating stable SIP services utilizing Java, managing open-source media engines, and incorporating advanced Speech AI technologies across multi-cloud environments such as AWS, Azure, and Google Cloud Platform. The position offers an exciting opportunity to work at the forefront of telecommunications innovation, contributing to the development of scalable, reliable, and intelligent voice communication solutions. Qualifications The ideal candidate will possess a solid foundation in Java programming, including experience with multi-threading and network programming. In-depth knowledge of Java applications utilizing frameworks such as JAIN SLEE and SIP Servlets is essential. Hands-on experience configuring and scripting with telephony engines like FreeSWITCH or Asterisk is required, along with a thorough understanding of voice protocols including SIP, RTP/RTCP, and SDP. Familiarity with integrating cloud speech APIs such as AWS Transcribe/Polly, Azure Speech, and Google Cloud Speech-to-Text is necessary. Candidates should have prior experience deploying and managing applications across multiple cloud platforms—AWS, Azure, and GCP. Proficiency with VoIP troubleshooting tools like Wireshark or sngrep is also important. Preferred qualifications include experience with Java telephony frameworks such as Metaswitch Rhino SLEE or Oracle OCCAS, as well as knowledge of containerization technologies like Docker and Kubernetes. A good understanding of WebRTC and telephony security standards such as TLS and SRTP will be advantageous. Responsibilities Develop, test, and maintain high-performance SIP-based voice services, ensuring stability and scalability using frameworks such as JAIN SLEE and SIP Servlets. Configure, manage, and optimize media servers like FreeSWITCH or Asterisk to support robust communication channels. Integrate Speech AI workflows including Speech-to-Text, Text-to-Speech, and Natural Language Processing into live voice streams to enhance user interactions. Deploy and monitor voice applications across multiple cloud platforms, ensuring high availability and performance. Troubleshoot network and audio quality issues using diagnostic tools like Wireshark and sngrep, diagnosing call drops, latency, and other network-related problems. Collaborate with senior architects and DevOps teams to design and roll out scalable conversational AI bots and voice solutions. Participate in code reviews, documentation, and continuous improvement initiatives to enhance system performance and security. Stay updated with emerging telecommunications and AI technologies to incorporate best practices into development processes. Benefits Rubicon Consulting offers a comprehensive benefits package designed to support the well-being and professional growth of its employees. This includes competitive salary packages, health insurance coverage, and paid leave entitlements. The company promotes a collaborative and innovative work environment, providing opportunities for continuous learning and development through training programs and industry certifications. Employees also benefit from flexible working arrangements where applicable, along with access to cutting-edge technology and tools. Rubicon Consulting values work-life balance and encourages a culture of inclusion, diversity, and mutual respect. Additionally, employees are recognized and rewarded for their contributions, fostering a motivating and engaging workplace. Equal Opportunity Rubicon Consulting is an equal opportunity employer committed to fostering an inclusive environment for all employees and applicants. We do not discriminate based on race, religion, gender, sexual orientation, age, disability, or any other protected characteristic. Our hiring practices are designed to ensure fairness and equal access to employment opportunities. We believe that diverse teams drive innovation and excellence, and we are dedicated to creating a workplace where everyone can thrive and contribute to our collective success.