Welcome!
Our Growth is Creating Great Opportunities!
Our team is expanding, and we want to hire the most talented people we can. Continued success depends on it! Once you've had a chance to explore our current open positions, apply to the ones you feel suit you best and keep track of both your progress in the selection process, and new postings that might interest you!
Thanks for your interest in working on our team!
Adtran is looking for a talented Software Engineer II to join our AI Team working on the REAL AI Factory, part of Mosaic One – an innovative SaaS platform.
Mosaic One is a cloud-based solution that aggregates data from network management platforms, broadband access systems, and consumer devices to deliver intelligent workflows and AI-driven insights that help our customers succeed.
As part of a cross-functional, full-stack team, you will design, build, and continuously improve our AI-powered products using modern technologies and agile best practices.
This is a fixed-term contract until 31.05.2027
Your Responsibilities
Design and develop components of the Mosaic One SaaS platform
Build and maintain end-to-end ML pipelines (data ingestion, preprocessing, IaC, training, inference)
Optimize data pipelines for feature engineering and model retraining
Deploy, monitor, and manage ML models in production using MLOps best practices
Ensure scalability, reliability, and reproducibility of ML systems (cloud & on-prem)
Contribute to system architecture and technical design documentation
Participate in code reviews and design reviews
Collaborate with product managers, architects, and business stakeholders to translate requirements into AI solutions
Support CI/CD processes and incremental releases
Troubleshoot and resolve issues across development and production environments
Optimize cloud resource usage, performance, and cost
Perform or assist in feasibility studies of needed software development
Conduct and participate in design reviews and code reviews
Basic Qualifications
Bachelor’s or Master’s degree in Computer Science, Machine Learning, Data Science, or a related field
4+ years of experience in software engineering, ETL pipelines, or cloud-based ML systems
Strong programming skills in Python and Bash (especially in automation and PySpark algorithms)
Experience with Databricks and Apache Spark
Solid knowledge of SQL
Experience with testing frameworks (e.g., PyTest)
Hands-on experience with CI/CD tools (e.g., Jenkins, GitHub)
Strong understanding of software engineering fundamentals (data structures, algorithms, scalability)
Experience with distributed systems (e.g., multi-threading, inter-process communication)
Experience building cloud-based SaaS products
Familiarity with MCP (Model-Context-Protocol)
Strong communication and teamwork skills
English proficiency at B2+ level or higher
Preferred Qualifications
Experience with Python ecosystem (Python 3, Pydantic, uv, Boto3)
Experience with AWS serverless architecture (API Gateway, Lambda, DynamoDB)
Experience with Infrastructure as Code (IaC)
Experience with Test-Driven Development (TDD)
Familiarity with networking concepts (Ethernet, network protocols, Pasive Optical Networks)
Compensation and Benefits
Stable employment conditions based on an employment contract (turnover rate below 4%). This is a fixed-term contract until 31.05.2027
1 additional vacation day for all, and 1 extra after 10 years with us
Flexible working hours and possible hybrid work (presence in the office in Gdynia 3 days a week)
English lessons during working hours
Internal training program to support your training needs
Paid employee referral program
Multisport Card
3% employer contribution to PPK
Private Health Care at Medicover (extended package for employees and possibility to enroll family members)
Strong team-oriented and friendly work culture
Access to various sports activities and events
Modern office (well-equipped gym and playroom) close to the SKM/PKM stations
#LI-Hybrid
What We Do
ADTRAN, Inc. (NASDAQ: ADTN) is defining the future network with innovative next-generation solutions that enable telecommunication service providers to deliver voice, data and video services to homes and businesses. Our vision is to enable a fully connected world where the power to communicate is available to everyone, everywhere. ADTRAN was founded in 1985 in Huntsville, AL. The corporate headquarters remains in Huntsville with additional R&D centers in Germany and India and sales offices located throughout the world. Innovation has been at the heart of the company since its inception and is recognized through our large portfolio of patents that is more than 700 strong. Our employees, more than 2,000 strong, come to work each day searching for ways to bring the world together through improved communication. We seek the best and brightest minds that bring integrity, a spirit of entrepreneurism, creative problem solving, and a passion for their work.
