[Hiring] R&D Engineer @Sestek

Role Description

We are looking for an R&D Engineer based in Türkiye to join our Arabic Text-to-Speech (TTS) team. This role offers the opportunity to combine strong engineering and machine learning skills with expertise in Arabic, particularly Saudi and Gulf Arabic varieties (with Najdi being a strong advantage).

• Develop, train, and test Arabic TTS models; contribute to model training pipelines and evaluations.
• Translate linguistic and dialect feedback (from linguists, customers, and internal reviews) into concrete technical improvements.
• Contribute to Arabic text normalization, diacritization (tashkeel), and grapheme-to-phoneme (G2P) components.
• Research new modules related to voice, text, and other data in company products, and implement them.
• Research and integrate third-party components required by our products; enable integration of company products with different platforms and provide support.
• Answer technical questions from assigned clients; implement enhancements and improvements in line with customer demand.
• Update and maintain installed programs at customer sites; strive to increase product performance.
• Implement coding and optimizations for product integrations; handle improvements and bug fixes within the R&D team.
• Collaborate closely with the Sestek and Unifonic teams and provide ongoing TTS expertise throughout the project.
• Document R&D studies.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• ~3 years of experience in software development; experience in speech technologies (TTS/ASR), NLP, or machine learning is strongly preferred.
• Native proficiency in Arabic, including strong command of MSA and native-level command of Saudi/Gulf Arabic (Najdi ideal; a neutral, widely understood Saudi Arabic is also a good fit).
• Good command of English; Turkish is a plus.
• Solid coding skills (e.g., Python) and familiarity with ML frameworks.
• Nice to have: broader engineering skills beyond R&D — MLOps, data pipelines, Kubernetes, low-latency APIs, git/version control.
• Strong communication skills — able to work effectively with non-technical stakeholders such as linguists and customers.
• Analytical thinking, solution-oriented, customer-oriented.

Company Description

We are a global technology company, developing AI-powered conversational solutions that empower organizations to be data-driven, enhance efficiency, and offer superior customer experiences. We are an R&D center and our solutions are developed by a team of over 100 engineers specializing in text-to-speech, speech recognition, natural language processing, and voice biometrics technologies. As of 2022 we are a part of Unifonic, a leading Communications Platform as a Service (CPaaS) provider, and we have grown into an international organization with over 500 dynamic team members. We have a customer base of 500 enterprises across 20 countries in the US, EU and MENA regions.