Diabolocom

Senior Backend Software Engineer, Voice Squad

Diabolocom  •  Paris, FR (Onsite)  •  8 days ago
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Job Description

About Diabolocom Diabolocom is a leading European provider of AI-first, cloud-based contact centre (CCaaS) and customer experience (CX) solutions that help companies deliver seamless, personalised customer experiences at scale. The platform combines proprietary, purpose-built AI technology for customer service, native telecom infrastructure, and deep CRM integrations to automate tasks, elevate data quality, and empower agents across all customer touchpoints.
Trusted by 400+ clients, with deployments across more than 60 countries in Europe, North America, South America, and the Middle East, Diabolocom combines the agility of SaaS innovation with carrier-grade voice performance. With eight offices worldwide and more than two decades of experience, the company is committed to advancing customer loyalty and growth through sovereign, intelligent, and scalable communication technology.
In the context of our exponential growth, we are strengthening our internal engineering team and opening a Senior Backend Software Engineer position in our Voice Squad.
About the Voice Squad Voice Squad is the software core of our CCaaS telephony. It is responsible for the core technical services that ensure secure, high-performance processing of phone calls on the Diabolocom platform. It manages critical components related to call routing, media stream handling and other voice related services.
Voice provides information to all parts of the system to help our clients observe agents and their business in general.
What’s next for the Voice Squad? In the coming year, we plan to: • Introduce Telephony as a Service that will be part of Omni-channel as a Service. • Perform massive optimization and refactoring to enable faster feature delivery.
Technical Stack: • Languages: Java 25, Kotlin 1.9, Go • Framework: Spring Boot 3.x.x • Database: PostgreSQL • Message Broker: RabbitMQ • Caching: Redis • Containerization: Docker
The team currently consists of: • 3 QA engineers • 5 backend developers • 1 team lead
What We’re Looking For: • 7+ years in software development within product-focused companies, with at least 3+ years working extensively with Java/Kotlin • Experience working with relational databases (PostgreSQL preferred). • Experience with Spring Boot would be a plus. • Experience in designing and implementing effective distributed systems. Ability to make architectural decisions and evaluate their impact on system performance, scalability, and reliability. • Strong autonomy and leadership potential, with a willingness to grow into a lead role. • Comfortable working with and improving an existing codebase. • Strong engineering culture, attention to the details, business-centric mindset.
What We Offer: • A collaborative and multicultural environment with a team that fosters professionalism, values innovation, and encourages knowledge-sharing. • Work on cutting-edge distributed communication systems in a fast-growing company, with real opportunities to make an impact. • Opportunities to take on new challenges and advance your career. • High-quality IT equipment of your choice. • Flexible work arrangements and remote work options. • Regular team-building events.
Recruitment Process:  • Intro call with a Talent Acquisition Manager • Live coding challenge  • Design interview through screen sharing with our Lead Software Engineer • Final interview with Alexander, our Head of Software Engineering
Diabolocom

About Diabolocom

For over 20 years, Diabolocom has been transforming how businesses engage with customers. Our cloud-based Contact Center as a Service (CCaaS) solution, powered by proprietary generative AI, delivers exactly what today’s customer service and sales teams need—intelligent automation, enhanced reachability, and actionable insights.

From real-time call transcription to satisfaction analysis and next-best-action guidance, our AI Assistant seamlessly integrates into every customer interaction, driving faster resolutions. What sets Diabolocom apart is our native AI for CX combined with full telecom services, creating a unique solution for hyper-customized customer interactions and telephony management. By automating the mundane, your teams can focus on what matters: winning customer loyalty and driving growth.

We seamlessly integrate with leading CRMs like Salesforce, Oracle, and Microsoft, giving your teams complete visibility into every conversation and enabling you to accelerate business growth.

That’s why industry leaders like Mitsubishi Electric, Nikon, Mantrac Group, and Brinks trust Diabolocom to deliver exceptional customer experiences that set them apart. Our AI-driven platform reduces post-call processing by 97% and slashes churn by 12%. The result? More satisfied customers and a more proactive, agile team.

Ready to challenge the norm? Join global brands transforming customer relationships in over 60 countries with Diabolocom.

Learn more about Diabolocom: https://www.diabolocom.com/

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Paris, FR
Year Founded
2005
Website
diabolocom.com
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