Data Science Specialist
India
Job Description
Data Science Specialist
Gautam Buddha Nagar, Uttar Pradesh

Job Summary

To apply advanced data science techniques, build scalable models, and generate actionable insights that drive business performance, optimize processes, and support data-driven decision-making. Job Title: Speech AI Engineer Role summary We are looking for a senior hands-on expert who can take speech systems from raw audio to reliable production features. You will build and improve core speech capabilities such as ASR, TTS, voice conversion, and speech-to-speech workflows, and you will also own the engineering work that makes them fast, scalable, and measurable in the real world.  This role is a strong fit if you enjoy the full stack of speech AI: signal processing intuition, modern deep learning, decoding and streaming constraints, and practical deployment trade-offs.  What you will own 1) Speech modeling that ships •    Build, train, and iterate on ASR models for real-world conditions such as conversational speech, accents, noise, and far-field audio, with strong offline and online evaluation discipline.  •    Develop and improve TTS systems that are natural, low-latency, and stable on speaker identity and prosody, with production-quality inference constraints.  •    Work on voice conversion and accent conversion when needed, preserving intelligibility, naturalness, and speaker identity in streaming settings.  2) Decoder and streaming engineering •    Design and implement decoding stacks using proven libraries and patterns, including Kaldi and OpenFST, and features like custom vocabulary injection, language model rescoring, and beam search tuning.  •    Build streaming inference systems with strict latency budgets and predictable behavior at scale, including monitoring and continuous improvement loops.  3) Speech analysis and speech intelligence •    Deliver speech analytics building blocks such as VAD, diarization, speaker recognition, and quality analytics that improve end-to-end product outcomes. •    Design robust evaluation harnesses and datasets for real user scenarios, including domain adaptation and behavior tuning across use cases.  4) GenAI and LLM integration for voice experiences •    Integrate speech components into LLM-based systems, including cascaded ASR plus LLM plus TTS pipelines, and drive joint optimization where it materially improves product quality.  •    Build or extend speech generation capabilities including voice cloning, controllable prosody, and modern generative architectures where relevant to the roadmap.  5) Production deployment and operational excellence •    Own end-to-end delivery: prototyping, ablations, training, evaluation, optimization, deployment, and post-launch monitoring.  •    Partner closely with product and platform teams to integrate models into real-time systems and maintain reliability, uptime, and quality under production traffic.  Required qualifications •    6+ years building production-grade speech or audio ML systems, or equivalent depth through research plus shipped production impact. •    Strong programming ability in Python, plus comfort in C or C++ for performance-critical components.  •    Proven expertise in deep learning for speech (PyTorch or TensorFlow) and practical model training and serving.  •    Solid fundamentals in speech and audio, including signal processing concepts and real-world acoustic variability.  •    Experience deploying models into real-time or high-throughput systems, including evaluation, scalability, and production reliability.  Strongly preferred.

Key Responsibilities

1. Develop and implement machine learning models, AI solutions, and predictive analytics for business applications.
2. Design, test, and refine algorithms for data processing, feature extraction, and pattern detection.
3. Perform exploratory data analysis, mining, and visualization to identify trends and business opportunities.
4. Collaborate with business and technology teams to translate data insights into strategic solutions.
5. Utilize deep learning, statistical modeling, and big data tools to enhance analytical capabilities.
6. Ensure data quality, governance, and best practices in model development and deployment.
7. Optimize and automate data workflows to improve efficiency and scalability.
8. Stay updated with emerging data science technologies and best practices to drive innovation.

Skill Requirements

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Other Requirements

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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 226,300 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2025 totaled $14.5 billion.

23 Benefits At HCLTech, we believe in empowering our employees with comprehensive benefits that support their professional growth and enhance their well-being. When you sign up for a career with us, you gain access to: https://rmkcdn.successfactors.com/147eb21f/a701dca9-f32d-4fc9-9447-6.svg Industry-benchmarked compensation https://rmkcdn.successfactors.com/147eb21f/b0c54381-ddcc-4a33-9b35-9.svg Best-in-class healthcare benefits https://rmkcdn.successfactors.com/147eb21f/b73027be-7aae-4d36-a090-4.svg Personal time off https://rmkcdn.successfactors.com/147eb21f/d5b4fdfd-2e99-4e26-9878-9.svg Maternity and paternity benefits https://rmkcdn.successfactors.com/147eb21f/3d42b0fc-4652-435a-9ece-c.svg Access to skills / higher education programs/resources https://rmkcdn.successfactors.com/147eb21f/aeddeaf2-9e25-4584-ad11-d.svg Discounts on products and services via Benefit Box https://rmkcdn.successfactors.com/147eb21f/a9609a3b-2700-4b3c-9d90-a.svg Participate in CSR programs and live life with a purpose https://rmkcdn.successfactors.com/147eb21f/c6e33851-710f-4634-bd69-f.svg Opportunities to grow and advance your career Note: The benefits listed above vary depending on the nature of your employment and the country where you work. Some benefits may be available in some countries but not in all.