Flint Technology Services
(IT) Call Service Developer
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Call Service Developer (Contract) in Ipswich, UK, lasting 3 months, with a negotiable pay rate. Key skills include Java, JAIN SLEE, SIP protocols, Docker, and Linux. Experience in telecom application development is essential.
🌎 - Country
United Kingdom
💱 - Currency
£ GBP
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💰 - Day rate
Unknown
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🗓️ - Date
October 9, 2025
🕒 - Duration
3 to 6 months
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🏝️ - Location
On-site
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📄 - Contract
Inside IR35
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🔒 - Security
Unknown
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📍 - Location detailed
Ipswich, England, United Kingdom
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🧠 - Skills detailed
#Linux #Debugging #Deployment #Java #NoSQL #Scala #RDBMS (Relational Database Management System) #Microservices #Code Reviews #Docker #Storage #MySQL #Databases #GIT #Version Control #DevOps #Data Storage
Role description
Job Details
Call Service Developer (Contract)
Call Service Developer (Contract)
Location: Ipswich, United Kingdom Country: UK Rate: Negotiable
Call Service Developer - Level 2
Location: Ipswich, UK
Duration: 3 moths rolling Inside IR35
About The Role
We are seeking a skilled Call Service Developer to design, develop, and maintain telecom service applications leveraging Java and JAIN SLEE frameworks. The ideal candidate will possess a deep understanding of telecom protocols (preferably SIP) and have hands-on experience working with modern development, deployment, and version control tools.
This role is ideal for a developer passionate about building scalable, resilient, and high-performance telecom applications running in distributed environments.
Key Responsibilities
• Design, develop, and maintain call service applications using Java and JAIN SLEE frameworks.
• Implement and integrate telecom protocols (eg, SIP) for Real Time communication services.
• Collaborate with cross-functional teams (DevOps, QA, Architecture) to ensure seamless integration and deployment.
• Optimize application performance and troubleshoot issues in Linux-based runtime environments.
• Utilize Docker and Consul for containerization, service discovery, and microservices orchestration.
• Work with MySQL and other data stores; make informed decisions on when to use RDBMS vs NoSQL databases.
• Maintain high code quality standards using Git for version control and follow CI/CD best practices.
• Participate in code reviews, architecture discussions, and contribute to continuous improvement initiatives.
Required Skills & Qualifications
• Strong expertise in Java, with hands-on experience in developing scalable applications.
• Proven experience with JAIN SLEE framework and telecom application development.
• Good understanding of telecom protocols, especially SIP.
• Proficiency in Linux as a development and runtime environment.
• Experience with Docker and Consul for containerized deployments.
• Solid understanding of MySQL or similar relational databases, and general knowledge of data storage principles.
• Hands-on experience with Git for source code management.
• Strong problem-solving, debugging, and analytical skills.
• Excellent communication and teamwork abilities.
Posted Date: 08 Oct 2025 Reference: JSCALLSERVICE Employment Business: Flint UK Technology Services Contact: Adele Cecere
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Job Details
Call Service Developer (Contract)
Call Service Developer (Contract)
Location: Ipswich, United Kingdom Country: UK Rate: Negotiable
Call Service Developer - Level 2
Location: Ipswich, UK
Duration: 3 moths rolling Inside IR35
About The Role
We are seeking a skilled Call Service Developer to design, develop, and maintain telecom service applications leveraging Java and JAIN SLEE frameworks. The ideal candidate will possess a deep understanding of telecom protocols (preferably SIP) and have hands-on experience working with modern development, deployment, and version control tools.
This role is ideal for a developer passionate about building scalable, resilient, and high-performance telecom applications running in distributed environments.
Key Responsibilities
• Design, develop, and maintain call service applications using Java and JAIN SLEE frameworks.
• Implement and integrate telecom protocols (eg, SIP) for Real Time communication services.
• Collaborate with cross-functional teams (DevOps, QA, Architecture) to ensure seamless integration and deployment.
• Optimize application performance and troubleshoot issues in Linux-based runtime environments.
• Utilize Docker and Consul for containerization, service discovery, and microservices orchestration.
• Work with MySQL and other data stores; make informed decisions on when to use RDBMS vs NoSQL databases.
• Maintain high code quality standards using Git for version control and follow CI/CD best practices.
• Participate in code reviews, architecture discussions, and contribute to continuous improvement initiatives.
Required Skills & Qualifications
• Strong expertise in Java, with hands-on experience in developing scalable applications.
• Proven experience with JAIN SLEE framework and telecom application development.
• Good understanding of telecom protocols, especially SIP.
• Proficiency in Linux as a development and runtime environment.
• Experience with Docker and Consul for containerized deployments.
• Solid understanding of MySQL or similar relational databases, and general knowledge of data storage principles.
• Hands-on experience with Git for source code management.
• Strong problem-solving, debugging, and analytical skills.
• Excellent communication and teamwork abilities.
Posted Date: 08 Oct 2025 Reference: JSCALLSERVICE Employment Business: Flint UK Technology Services Contact: Adele Cecere
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