Job Title: Senior Software Engineer - Python Job Description We're Concentrix. The intelligent transformation partner. Solution-focused. Tech-powered. Intelligence-fueled. The global technology and services leader that powers the world’s best brands, today and into the future. We’re solution-focused, tech-powered, intelligence-fueled. With unique data and insights, deep industry expertise, and advanced technology solutions, we’re the intelligent transformation partner that powers a world that works, helping companies become refreshingly simple to work, interact, and transact with. We shape new game-changing careers in over 70 countries, attracting the best talent. In our Information Technology and Global Security team, you will deliver the latest technology infrastructure, transformative software solutions and industry-leading global security for our staff and clients. You will work with the best in the world to design, implement and strategize IT, security, application development, innovation, and solutions in today’s hyperconnected world. You will be part of the technology team that is core to our vision of develop, build and run the future of Integrated Services. Our game-changers around the world have devoted their careers to ensuring every relationship is exceptional. And we’re proud to be recognized with awards such as "World's Best Workplaces," “Best Companies for Career Growth,” and “Best Company Culture,” year after year. We embrace our game-changers with open arms, people from diverse backgrounds, who are curious and willing to learn. Your natural talent to help others and go beyond WOW for our customers will fit right in with what we do and who we are. Join us and be part of this journey towards greater opportunities and brighter futures. **Senior Python Developer – Session Management & Orchestration** **Project:** **Speech-to-Speech (Real-Time AI Voice Translation)** **Position Overview:** We are looking for an experienced **Senior Python Developer** to join our R&D team building the **Speech-to-Speech Translation Platform** — an intelligent, real-time communication system that enables **AI-powered multilingual voice conversations** across contact centers and telephony systems. In this role, you will design and implement the **core backend services** responsible for **session management, synchronization, and orchestration** of live audio translation pipelines. You will work on **high-performance, event-driven components** that connect multiple real-time subsystems — including speech recognition, translation, and synthesis — ensuring accurate timing, fault tolerance, and reliability at scale. This role requires strong backend development skills, a deep understanding of distributed systems, and experience with **real-time event handling and orchestration** in Python. **Key Responsibilities:** + Design and implement **session management and orchestration logic** for real-time audio translation workflows. + Develop backend services in **Python** handling **multi-user, multi-session communication** (callers, agents, translators, AI pipelines). + Implement synchronization mechanisms between **STT (Speech-to-Text)** , **MT (Translation)** , and **TTS (Speech synthesis)** modules to maintain real-time flow accuracy. + Build and maintain APIs (REST, GraphQL, or WebSocket) enabling external integrations with CCaaS and AI systems. + Develop **stateful orchestration logic** to coordinate live streaming events, retries, and session recovery. + Collaborate with architects on designing **scalable, fault-tolerant workflows** (using Temporal or event-driven frameworks). + Implement **session lifecycle management** — authentication, tracking, cleanup, and data consistency. + Optimize backend performance to achieve **low latency, synchronization accuracy, and horizontal scalability** . + Collaborate with DevOps and AI teams to ensure **observability and reliability** in production environments (monitoring, logging, metrics). + Participate in **code reviews, design discussions** , and provide mentorship to junior developers. **Qualifications & Skills:** **Required:** + 6–10 years of experience in **backend development** with **Python** . + Strong understanding of **distributed systems** , **concurrency** , and **asynchronous programming (asyncio, multiprocessing, Celery, or similar)** . + Experience designing and developing **session or state management systems** (e.g., chat, telephony, real-time streaming, or game backends). + Proven expertise in **event-driven architectures** (Kafka, NATS, RabbitMQ, or custom WS/WebSocket frameworks). + Experience building **RESTful APIs** or **GraphQL endpoints** for multi-component systems. + Familiarity with **orchestration frameworks** (Temporal.io, Airflow, or equivalent). + Proficiency with **PostgreSQL** , **Redis** , or other stateful storage systems. + Solid experience with **containerized deployments** (Docker, Kubernetes) and **CI/CD pipelines** . + Understanding of **observability principles** — structured logging, metrics, tracing. + Excellent analytical and debugging skills with focus on **synchronization, timing, and reliability** . + Good English communication and teamwork skills in an Agile environment. Location: POL Krakow - ul. Lubomirskiego 20, Unity Tower 14th Flr Language Requirements: Time Type: Full time **If you are a California resident, by submitting your information, you acknowledge that you have read and have access to the Job Applicant Privacy Notice for California Residents (https://www.concentrix.com/resource/job-applicant-privacy-notice-for-california-residents/)**