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Senior C/C++ Engineer

Remote from Spain·Added 2 months ago (last checked 26 Oct)

Omilia

6 open roles

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Our summary

Work mode: Remote from Spain
English: Required
Experience: 5+ years
Education: University degree

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Skills

Nice to have

Requirements

What we're looking for

5+ years professional experience in C/C++ systems programming, including memory management, multithreading, and low-level debugging.
Experience with Git and C/C++ build systems such as CMake or Meson.
Hands-on experience modifying, compiling, and deploying Asterisk.
Experience writing APIs and/or Web Services & Microservices using C/C++.
Object-oriented analysis and design using common design patterns.
Self-motivated and driven to create extraordinary things.
Ability to work under pressure and on strict deadlines.
Bachelor's degree in Computer Science.
Very good written and oral communication skills in English.
Continuous innovation mindset.

Nice to have

Knowledge of SIP (RFC 3261) and related RFCs (SDP, RTP/RTCP, STUN/TURN/ICE) and practical dialplan authoring experience.
Experience with Java or Python programming.
Familiarity with FreeSWITCH, Kamailio, or OpenSIPS, WebRTC-to-SIP interworking, or call recording/audio codec architectures (G.711, G.729, Opus).
Experience in regulated environments (PCI-DSS, HIPAA) where call recording and redaction requirements apply.

Pay & benefits

What you'll get

Fixed compensation;
Long-term employment with the working days vacation;
Development in professional growth (courses, training, etc);
Being part of successful cutting-edge technology products that are making a global impact in the service industry;
Proficient and fun-to-work-with colleagues;
Apple gear

The role

The Senior C/C++ Engineer sits within Omilia's product engineering team, building and maintaining performance-critical systems software that underpins Omilia's conversational AI infrastructure. The role requires strong systems-level programming fundamentals and, ideally, prior exposure to telephony or real-time communications stacks such as Asterisk-based voice platforms, SIP signaling, and dialplan engineering. It is structured to let a strong C/C++ engineer grow into deep telephony specialization over time, with mentorship available from the team's existing SIP experts. Engineers who already bring that expertise are fast-tracked into the specialized workstreams.

What you'll do

Own the design, development, and ongoing support of performance-critical C/C++ components across Omilia's platform.
Own resolution of scalability and performance issues affecting telephony and SIP systems.
Ensure effective time management and consistent delivery against deadlines.
Contribute as an integrated, collaborative team member across engineering and cross-functional teams.
Design, implement, and maintain C/C++ components across Omilia's platform, with emphasis on performance, memory safety, and concurrency correctness in production systems.
Develop efficient applications for mission-critical systems geared for high availability and performance.
Debug complex, multi-threaded, low-level issues using tools such as gdb, valgrind, and/or strace.
Develop, extend, and maintain custom Asterisk modules (res_, chan_, app_*) to support call handling, recording, and routing requirements specific to the platform.
Patch, rebuild, and validate Asterisk core and third-party modules against upstream security advisories and internal hardening requirements.
Identify performance bottlenecks and suggest improvements.
Develop with security principles in mind and scale services with a DevOps mindset.
Meet regularly with the line manager to review progress; manage issue resolution and escalate critically when needed.
Work effectively with other teams, units, and departments, ensuring clear information flow and team working.
Support other organisational priority activities when necessary, and act as an Omilia ambassador.

About Omilia

Omilia is a conversational AI company that builds and deploys virtual agents and voice-enabled solutions for large enterprises. The company specializes in natural language understanding, automatic speech recognition, and conversational AI platforms, serving clients across sectors like telecommunications, banking, and insurance. Omilia operates globally with a significant engineering and delivery presence, and its scale is reflected in a multi-national workforce and enterprise-grade client deployments.

Omilia has a growing presence in Spain, with roles spanning engineering, consulting, and delivery for the EMEA and Iberia regions. The company's culture is highly technical and product-focused, making it relevant for international professionals with backgrounds in computational linguistics, AI engineering, and enterprise software consulting. For relocating candidates, Omilia offers the opportunity to work on cutting-edge conversational AI in a European context, with Spain serving as a key hub for its EMEA operations.

Industry: Conversational AI
Founded: 2003
Employees: 100–500
Headquarters: Limassol, Cyprus
In Spain: Madrid

Good to know if you are moving

Omilia's global HQ is in Limassol, Cyprus, so Spain roles are part of a broader EMEA structure — relocating to Spain keeps you in the same time zone as the HQ.
The company hires internationally and work is conducted in English, making it accessible for non-Spanish speakers.
Spain roles are typically delivery- and engineering-focused, tied to clients across the EMEA region.
The company has a track record of hiring remote and hybrid talent across Europe, which can ease the relocation process.

In their own words

Additional information

Omilia is proud to be an equal opportunity employer and is dedicated to fostering a diverse and inclusive workplace. We believe that embracing diversity in all its forms enriches our workplace and drives our collective success. We are committed to creating an environment where everyone feels welcomed, valued, and empowered to contribute their unique perspectives without regard to factors such as race, color, religion, gender, gender identity or expression, sexual orientation, national origin, heredity, disability, age, or veteran status, all eligible candidates will be given consideration for employment.

All open roles at Omilia