Main Purpose of Job

This is a senior hands-on data engineering role supporting the delivery, maintenance, and improvement of our client's data platform and data warehouse services.
The role combines hands on development with technical oversight of distributed delivery teams. It is responsible for designing and maintaining reliable data pipelines, ETL processes, data models, APIs, and supporting AWS based services, while ensuring delivery aligns with development standards, architecture principles, and operational expectations.
The role will work across technologies including AWS S3, AWS Lambda, AWS Fargate, AWS Glue, Amazon Redshift, SQL, and Python. It will also provide day to day technical guidance and review for offshore development teams, helping ensure that work is correctly understood, appropriately designed, well implemented, tested, and suitable for long term support.

Knowledge, Skills and Experience

Essential Knowledge

• Proven experience as a Senior Data Engineer, Data Warehouse Developer, Data Engineer, or similar technical data role.
• Experience developing and maintaining data warehouse solutions and ETL processes.
• Strong understanding of data modelling, data transformation, and data quality principles.
• Experience working with cloud based data engineering services.
• Strong understanding of software engineering good practice, including maintainability, version control, testing, review, and documentation.
• Experience working in Agile delivery environments.
• Experience working with distributed, offshore, near shore, or third party development teams.
• Ability to provide technical guidance and challenge implementation decisions constructively.
• Ability to challenge proposed designs and implementations where they create risk around maintainability, performance, data quality, security, or supportability.
• Effective communication skills, with the ability to work with both technical and non technical stakeholders.
• Familiarity with Jira and Confluence for project and delivery management.

Essential Functional / Technical Skills

• Strong SQL skills, including query optimization, data transformation, modelling, reconciliation, and validation.
• Strong Python skills for data engineering, automation, ETL, or API development.
• Experience with AWS S3 for data storage and data exchange.
• Experience with AWS Glue or similar ETL tooling.
• Experience with Amazon Redshift or similar cloud data warehouse technology.
• Experience with AWS Lambda, AWS Fargate, or similar serverless/container-based services.
• Experience developing, supporting, or integrating APIs used by data platforms or downstream systems.
• Experience with data quality checks, validation, reconciliation, and production support of data pipelines.
• Familiarity with GitHub or similar version control tools.
• Understanding of CI/CD, environment management, deployment safety, and operational support.

Desirable

• Experience providing technical oversight to offshore or near shore delivery teams.
• Experience with infrastructure as code tools such as Terraform.
• Experience with Java or other backend development languages.
• Familiarity with AWS IAM, secrets management, access control, and cloud security fundamentals.
• Experience with data governance, data lineage, and data catalogue tooling.
• Experience with reporting, BI, or analytics platforms.
• Experience working in high traffic, consumer, ecommerce, media, sport, or membership-based organizations.

What we offer:

•     Dynamic and supporting international teams.
•     Regular assessments and performance reviews. You will have the opportunity for promotion, bonuses and a raise in accordance with the pace at which you develop and your performances.
•     Hybrid or office work.
•     20-25 vacation days per year.
•     4 days of sick leave (100% paid)
•     Equipment for work, laptop and all necessary additions.
•     Access to trainings and courses.
•     Private health insurance.
•     FIT Pass card for many sports’ facilities

Complexity in consumer systems is growing exponentially, creating new challenges in sensing, data processing, and system intelligence. Leveraging advanced sensor and signal processing technologies, we are addressing these challenges with innovative approaches. We are looking for an energetic Senior Firmware Engineer who can bridge these technologies with novel software solutions, algorithms, and machine learning primitives.

Required skills:

• Ability to work on communication stacks, in-depth domain knowledge on Bluetooth Classic, Bluetooth LE, Bluetooth Audio, Multipoint, Auracast, Controller stack protocols, BLE profiles/Services.
• Ability to work on system level architecture; ability to create and maintain system level solutions comprised of state-of-the-art hardware and software components and provide documentation for our products.                                   
• Development experience with functions and protocols such as TWS Role switch, fast pairing, voice assistants, Conformance and Teams certifications.
• Ability to understand complex customer application ecosystems and integrate our product offerings.
• Prior experience in developing and debugging all aspects of system software. This includes understanding overall system performance from both a hardware and software perspective.

Qualifications:

• BS or MS in Electrical or Computer Engineering or related field
• 5+ years of Industrial experience in firmware development
• Strong C/C++ and Python programming skills
• Strong knowledge of digital signal processing (DSP) and algorithm development experience
• Experience with communication stacks including Bluetooth classic, BLE USB, SDIO WiFi, Bluetooth & WiFi interoperability.
• Strong knowledge of Tensilica HiFi, Kalimba DSP cores and Bluetooth Audio Frameworks
• Hands on experience with integrating, building, and testing of multi-threaded applications.
• Experience with embedded real-time operating systems
• Experience with SCM tools (GIT, SVN, Clearcase, Perforce, etc.)
• Strong analytical and problem-solving abilities
• Experience with defect tracking tools (Jira, Bugzilla, etc.)
• Strong working knowledge of a software development process (e.g., Agile, Waterfall)
• Application of Object-Oriented concepts and methodologies
• Strong system level knowledge in audio, video and TWS domains

What we offer: 

• Dynamic and supporting international teams.
• Regular assessments and performance reviews. You will have the opportunity for promotion, bonuses and a raise in accordance with the pace at which you develop and your performance. 
• Remote, hybrid or office work.
• 20-25 vacation days per year.
• Equipment for work, laptop and all necessary additions.
• Access to training and courses.
• Private health insurance.
• FIT Pass card for many sports facilities. 

Our customer is one of the leaders in providing global corporate cloud based unified communication solutions for business. The company provides a cloud-based business phone system. It offers PBX features such as multiple extensions; call control; Outlook, Salesforce, Google Docs, DropBox and Box integration; SMS; video conferencing and web conferencing; fax; auto-receptionist; call logs; and rule-based call routing and answering. Customers do not require capital investment or maintenance contracts, which lowers customer costs and – as with most cloud-based technologies -- "potentially disrupts" traditional on-premises PBX providers.

Telephony team is working on development high load server solutions for the cloud-based telephony core. We keep on improving our product adding new features related to handling business logic of VoIP calls as well as improving the core application's architect in order to improve its performance and stability.

What you will be doing:

• Work in Scrum teams that consist of developers and QA engineers
• Collect requirements and develop technical documentation
• Design and develop new features with C++
• Support legacy code, analyze and fix bugs
• Implement automated test cases with Python

Required skills:

• Experience in server-side development for 5+ years
• Experience with C++ development in Linux environment
• Knowledge of modern C++ standards (C++11, C++14)
• Deep understanding of networking protocols
• Experience in writing technical documentation
• Experience in working in Agile teams (Scrum, Kanban)
• Ability to communicate effectively and work in a team
• English - intermediate

Nice to have:

• Experience in SIP and VoIP
• Python
• Experience in Kafka
• Experience in databases (Oracle, MySQL, NoSQL)
• Containers: docker
• Knowledge of Russian language is a plus.

What we offer:

• Dynamic and supporting international teams.
• Regular assessments and performance reviews. You will have the opportunity for promotion, bonuses and a raise in accordance with the pace at which you develop and your performances.
• Remote, hybrid or office work.
• 20-25 vacation days per year.
• Equipment for work, laptop and all necessary additions.
• Access to trainings and courses.
• Private health insurance.
• FIT Pass card for many sports’ facilities

Project Overview:

As part of our team, you’ll collaborate with people of all styles, skill sets and backgrounds to realize our vision while fostering a community where everyone feels included and empowered to do the best work of their lives.

As a Senior C developer at Core Platform Engineering team your role will be to enhance the industry’s most innovative embedded networking solution for streaming audio and to develop the firmware for new product introductions. You will work with some of the brightest minds in the business across multiple disciplines of software, hardware, acoustics and WiFi technologies. You will have fun and innovate every day in our fast paced and creative environment.

What You’ll Do

• Use your knowledge of C, Linux kernel mode development, to integrate components into the platform simulator, to bring up new prototypes and future client products on the latest, highest performing wireless networking hardware.
• Leverage your curiosity in solving intricate, hard-to-replroduce defects in Linux kernel.
• Work closely with the Hardware and Platform Software teams to optimize clients platform performance, maintaining our market position as the most advanced audio hardware system in the world.

Activities

• Writing clean, maintainable code
• System architecture & technical designs
• Debugging
• Optimization
• Documentation
• Working in a team setting
• Code reviews, providing feedback
• Time estimation

Required Skills & Expertise

• 5+ yrs of experience in C
• Strong expertise in Linux kernel development and debugging
• Proficiency in Python
• Exposure to working with a software team that utilizes agile methodologies
• CI/CD systems

Preferred Qualifications

• Solid Python experience
• C++

What we offer:
•     Dynamic and supporting international teams.
•     Regular assessments and performance reviews. You will have the opportunity for promotion, bonuses and a raise in accordance with the pace at which you develop and your performances.
•     Hybrid or office work.
•     20-25 vacation days per year.
•     4 days of sick leave (100% paid)
•     Equipment for work, laptop and all necessary additions.
•     Access to trainings and courses.
•     Private health insurance.
•     FIT Pass card for many sports’ facilities