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For Companies At a Glance
- Tasks: Design and enhance a SIP/VoIP platform while building secure, scalable services.
- Company: Established tech business with a specialist software team.
- Benefits: 24 days holiday, hybrid working, pension, life insurance, and private medical.
- Why this job: Join a dynamic team and work on innovative projects that make a real impact.
- Qualifications: 5+ years in software development with strong SIP/VoIP knowledge.
- Other info: Immediate start available; excellent career growth opportunities.
The predicted salary is between 55000 - 65000 £ per year.
An established technology business is looking for a Senior / Experienced Developer to join a small, specialist software team. You’ll help evolve an enterprise-level SIP platform and build secure, scalable services and integrations.
The Role
- Design, develop and enhance a SIP/VoIP platform and associated services
- Build REST APIs and value-add services
- Integrate with external systems including AI-driven voice, transcription and analytics services
- Troubleshoot SIP/RTP issues and improve platform reliability
- Contribute to secure development practices and compliance (ISO27001, PCI-DSS)
Key Skills & Experience
- Strong SIP / VoIP protocol knowledge (SIP, SDP, RTP)
- 5+ years’ experience with Python or another OO language
- REST APIs, Flask/Django and secure systems development
- Linux (Ubuntu), Docker and Git-based workflows
- Wireshark for SIP/RTP troubleshooting
- Excellent communication skills
Desirable
- FreeSWITCH, Kamailio or WebRTC
- C/C++, OAuth2/Auth0
- CI/CD, Kubernetes, MongoDB or MySQL
Benefits
- 24 days’ holiday + bank holidays
- Hybrid Working (1 day per month in office)
- Pension, Life Insurance & Private Medical
- Birthday & volunteering day off
- Discounts & Cycle to Work scheme
The client is looking to fill this opportunity immediately, so please apply ASAP or feel free to drop me an email with any questions.
Senior Developer in Guildford employer: SER Limited
Contact Detail:
SER Limited Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Developer in Guildford
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech industry, especially those who work with SIP/VoIP. A friendly chat can lead to insider info about job openings or even a referral.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving REST APIs and secure systems. This gives potential employers a taste of what you can do beyond your CV.
✨Tip Number 3
Prepare for interviews by brushing up on common SIP/RTP troubleshooting scenarios. We want you to feel confident discussing your experience and how you can contribute to their team.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take that extra step to connect with us directly.
We think you need these skills to ace Senior Developer in Guildford
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with SIP/VoIP protocols and any relevant projects you've worked on. We want to see how your skills align with what we're looking for, so don’t hold back!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you're passionate about software development and how you can contribute to our team. Keep it engaging and personal – we love to see your personality!
Showcase Your Projects: If you've worked on any cool projects, especially those involving REST APIs or secure systems, make sure to mention them. We’re keen to see your hands-on experience and how you tackle challenges in your work.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets to us quickly and efficiently. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at SER Limited
✨Know Your SIP/VoIP Stuff
Make sure you brush up on your SIP and VoIP protocol knowledge before the interview. Be ready to discuss specific protocols like SIP, SDP, and RTP, as well as any troubleshooting you've done with tools like Wireshark. This will show that you're not just familiar with the concepts but can also apply them in real-world scenarios.
✨Showcase Your Coding Skills
Prepare to talk about your experience with Python or other object-oriented languages. Bring examples of REST APIs you've built or enhanced, and be ready to discuss your approach to secure systems development. If you have a portfolio or GitHub repository, make sure to share it!
✨Understand the Company’s Tech Stack
Familiarise yourself with the technologies mentioned in the job description, such as Flask/Django, Docker, and Linux. If you have experience with FreeSWITCH or Kamailio, don’t hesitate to mention it. Showing that you understand their tech stack will demonstrate your genuine interest in the role.
✨Communicate Clearly
Since excellent communication skills are highlighted in the job description, practice explaining complex technical concepts in simple terms. Think about how you would describe your past projects to someone without a technical background. This will help you connect better with the interviewers.
