Senior Machine Learning Engineer II

About Our TeamThe Global Operations team at SumUp is dedicated to creating an unparalleled customer experience in the fintech sector, with artificial intelligence at its core. As a vital member of our AI team, you will bridge machine learning engineering and tangible product impact, developing models and systems that enhance intelligent customer support for over 4 million merchants globally. This is not a research position; it's a dynamic engineering role where your contributions will directly influence the daily experiences of SumUp merchants.Your ResponsibilitiesDesign, build, and deploy robust AI solutions into production, prioritizing reliability and scalability.Develop and maintain ML infrastructure and data pipelines to optimize data processing, model training, and serving.Enhance and fine-tune machine learning models for peak accuracy and efficiency in large-scale applications.Work collaboratively with data scientists, product managers, and backend engineers to convert business requirements into effective AI strategies.Implement strong engineering practices including version control, CI/CD, and comprehensive testing frameworks.Gather, preprocess, and organize extensive text datasets to facilitate superior model training and assessment.

Join our Analytics Services Team at Experian Software Solutions, where we drive innovation in advanced analytics and generative AI for decision-making, fraud prevention, and identity verification worldwide.As a Machine Learning Scientist, you will leverage your expertise to design, build, and implement state-of-the-art machine learning and generative AI solutions at scale. Your role will merge deep data science knowledge with ML and data engineering skills to deliver robust production models, prototypes, and platform enhancements. Additionally, you will collaborate with cross-functional teams to facilitate global product launches, client implementations, and drive early adoption initiatives. You will report directly to the Director of Data Science and Generative AI.Key Responsibilities:Collaborate with data scientists to enhance and productize additional analytics solutions.Ensure the successful execution of production code within the Ascend platform to deliver innovative solutions to our clients.Work with Engineering, Research, and Data Science teams to design and implement machine learning models, dashboards, ad hoc analyses, and AI applications on a cloud-native big data platform (AWS).Partner with leaders, analytic consultants, engineers, account executives, product managers, and external partners to introduce impactful solutions to our diverse client base.Develop advanced machine learning solutions and prototypes to glean insights from varied structured and unstructured data sources, documenting and presenting findings effectively.Utilize generative AI tools and model development frameworks to create new models and deploy generative capabilities, including prompt engineering and model evaluation.Produce high-quality production code following software engineering best practices, ensuring reliability and reproducibility.Communicate methodologies, assumptions, performance metrics, and trade-offs to both technical and non-technical stakeholders, translating intricate concepts into actionable insights.Design and implement advanced algorithms to tackle complex problems across supervised, unsupervised, and reinforcement learning methodologies.Contribute to the evolution of features and platforms by gathering feedback from clients and teams, prioritizing enhancements within Experian's ML and AI ecosystem.

Join NielsenIQ as a Junior Data and Machine Learning Analyst, where you will play a pivotal role in analyzing data and implementing machine learning models. This is an exciting opportunity for individuals looking to enhance their skills in data analysis and machine learning in a dynamic and innovative environment.

Role overview NielsenIQ seeks a Junior Data and Machine Learning Analyst for its Sofia office. This position works alongside experienced data scientists and analysts, with a focus on extracting insights from complex datasets and contributing to machine learning projects. What you will do Analyze large and diverse data sets to uncover patterns and trends Support the creation and application of statistical models Assist in building and testing machine learning solutions Work closely with team members to deliver insights that inform decisions Growth and learning This role provides hands-on experience in data analysis, statistical modeling, and machine learning. Guidance from experienced colleagues and opportunities to develop new technical skills are part of the team culture.

Join NielsenIQ as a Senior Data Scientist, where you will leverage your expertise in data analysis and modeling to derive actionable insights from complex datasets. Collaborate with cross-functional teams to drive data-driven decision-making and enhance business strategies. You will be instrumental in developing innovative solutions that meet client needs while contributing to our mission of delivering valuable insights to businesses worldwide.

SGS Bulgaria, a branch of the SGS Group based in Geneva, Switzerland, is seeking a dedicated Electrical Machines and Equipment Specialist for our Industrial and Ecology department.Key Responsibilities:1. Organize diagnostic and testing activities for transformers, including:- Monitoring the parameters of liquid and solid insulation of transformers;- Conducting electrical measurements of transformers;- Assessing the current state of used transformer oils and interpreting analysis data;- Determining opportunities for regenerating and restoring operational characteristics of used oils and extending their lifespan;- Analyzing measurement and testing results, issuing expert opinions on transformer conditions, and providing recommendations for subsequent actions;2. Organize activities related to the processing of used transformer oils.3. Engage with potential clients and develop the business and client base.4. Participate in the preparation and implementation of new projects.

Role Overview Cision is looking for a DevOps Engineer II to help strengthen our cloud, DevOps, and SRE platforms. This remote role is open to candidates based in Bulgaria, including Sofia. What You Will Do Design and implement tools, automation, and infrastructure that support reliable, secure, and scalable service delivery across multiple environments. Collaborate with teams across the company to deliver solutions that are consistent and well-governed. Drive improvements in platform reliability, operational efficiency, and scalability. Mentor engineers and share best practices in cloud infrastructure, automation, CI/CD, and site reliability engineering. Report to the Cloud DevOps Manager. About Cision Cision values curiosity, collaboration, and innovation. Team members are encouraged to bring their ideas forward and contribute to the success of the brands we support. Personal growth and shared achievements go hand in hand here. Location Remote within Bulgaria or based in Sofia.

Trinetix is seeking an experienced Python Developer to join our innovative team.You will play a crucial role in developing cutting-edge solutions for our esteemed clients in the consulting and financial sectors in the United States. Your work will focus on enhancing business processes through automation, ensuring optimal efficiency, and leveraging advanced technologies including artificial intelligence (AI) and machine learning (ML) during various phases of project development.

Role overview LivePerson is looking for a NOC Engineer II to join the team in Sofia. This position centers on supporting network operations and ensuring that communication platforms remain reliable. The NOC Engineer II works closely with other engineering teams to monitor systems, respond to incidents, and help maintain a stable network environment. What you will do Monitor network operations and track system performance Troubleshoot technical issues as they occur Work with engineering teams to resolve incidents Contribute to ongoing efforts to strengthen network stability and performance Location This role is based onsite at the LivePerson office in Sofia.

We are seeking a highly skilled Senior System Engineer to join our innovative team at Mangroup. In this role, you will be responsible for designing, implementing, and maintaining complex systems that meet the evolving needs of our clients. Your expertise will contribute to the development of cutting-edge solutions, ensuring optimal performance and reliability.As a Senior System Engineer, you will collaborate with cross-functional teams to drive projects from conception to deployment. You will leverage your technical knowledge and problem-solving abilities to tackle challenges and deliver exceptional results.

Join our innovative Analytics Services Team at Experian Software Solutions, where we drive the development of cutting-edge analytic and generative AI products that aid in decision-making, analytics, fraud prevention, and identity management on a global scale.As a Data Scientist, you will leverage your expertise in predictive modeling, coding, and generative AI to craft analytical solutions and contribute to product prototypes. Your role will involve leading analytical consulting efforts for Experian's new global product launches and ensuring early client success. You will work under the guidance of the Director of Data Science and Generative AI.Key Responsibilities:Design and implement advanced machine learning models and prototypes to extract valuable insights from various structured and unstructured data sources.Collaborate with engineering, research, and data science teams to develop Machine Learning applications, dashboards, and ad hoc analyses on our cloud-native big data platform (AWS).Clearly communicate model processes and outcomes, documenting findings and performance metrics while translating complex results into actionable insights.Work alongside leaders, analytic consultants, engineers, and product managers to introduce new solutions to the market that create significant value for Experian's diverse client base.Utilize generative AI and modeling tools to develop innovative models.Investigate and integrate new data assets from various sources into Experian's ML and AI platform.Collect feedback from internal and external clients to inform product development and feature prioritization, as well as contribute to the evolution of tools and capabilities within the Ascend Platform.Analyze extensive datasets to identify patterns and insights.Address complex challenges through the creation of impactful algorithms.

At SumUp, we recognize that small businesses are the driving force behind Europe's economy. Our mission has always centered around empowering these businesses to flourish. We are now embarking on an exciting new venture: a stablecoin designed to ensure payments are instant, cost-effective, and fully compliant with regulations.This is a unique opportunity to contribute to a product that sits at the convergence of fintech, cryptocurrency, and regulatory compliance, supported by a profitable organization that serves over 4 million merchants across 35+ markets.What’s the opportunity?We are seeking a Senior Backend Engineer who is passionate about building innovative solutions from the ground up. This role is ideal for someone who thrives in fast-paced environments and desires to enhance their technical skills in a high-impact field. You will collaborate closely with our Staff Engineer and cross-functional teams to bring our stablecoin project to fruition.This newly created position is pivotal for a high-priority project. It entails a dynamic, complex environment filled with learning opportunities, perfect for an individual who enjoys tackling challenging problems and delivering high-quality code.Your responsibilities will include:Building from the ground up: Participate in technical discovery and MVP development for SURO, coding daily in Kotlin or Go.Designing reliable systems: Assist in creating high-SLA, service-oriented systems that integrate with our ledger, reconciliation, and treasury platforms.Delivering quality: Write clean, maintainable code with a focus on reliability, security, and observability.Collaborating across teams: Work alongside Product, Finance, Legal, and Banking teams to ensure features comply with regulatory standards.Expanding your skills: Learn from seasoned engineers and deepen your expertise in payments, compliance, and blockchain technologies.Owning features end-to-end: Take full responsibility for specific components from design through deployment and monitoring.

Join NielsenIQ as a Principal Data Scientist, where you will play a pivotal role in shaping data strategies and driving insights. In this position, you will leverage advanced statistical methods and machine learning techniques to analyze complex datasets and provide actionable insights that influence business decisions. You will collaborate with cross-functional teams to design innovative solutions that enhance our data-driven capabilities.

Join Experian as a Data Scientist and leverage your analytical skills to transform data into actionable insights. You will be part of a dynamic team that focuses on extracting value from data, driving business strategies, and enhancing customer experiences. Your role will involve developing predictive models, conducting data analysis, and collaborating with various departments to support data-driven decision-making.

Your Role:Craft sophisticated data engineering solutions that facilitate data analysis and deliver on-demand insights.Design and implement scalable, cloud-native data platforms and pipelines tailored for both structured and unstructured data.Develop robust ETL/ELT pipelines utilizing cutting-edge cloud-native services.Take the lead in architecting and refining complex multi-platform data architectures to enhance performance, scalability, and growth.Implement best practices in data quality, governance, lineage, security, and observability.Collaborate with analytics, product, engineering, and business teams to transform requirements into dependable, high-value data solutions.Provide technical mentorship and guidance, ensuring compliance with established engineering standards and quality protocols.Enhance and evolve data solutions using contemporary cloud technologies (such as S3, Redshift, Glue, or comparable services).You will report to the Data Modeller - Manager.

Join bunq as a Learning & Performance Specialist, where you will have the opportunity to create and lead innovative training programs that empower our employees to reach their full potential. You will take charge of identifying skill gaps, developing effective training solutions, and measuring their impact through data analysis Your ResponsibilitiesDesign, implement, and continually enhance comprehensive training programs tailored to bunq's unique culture.Facilitate engaging workshops and hands-on training sessions aimed at fostering real behavioral change.Evaluate the effectiveness of training initiatives and utilize insights to drive continuous improvement Refine existing internal processes or develop new methodologies to elevate employee performance and professional growth.

Location: Sofia OfficeCompany: LivePerson Inc. About LivePerson LivePerson Inc. (NASDAQ: LPSN) helps leading brands connect with consumers through its Conversational Cloud platform. Companies such as HSBC, Chipotle, and Virgin Media use LivePerson to facilitate millions of interactions every month. The platform supports nearly a billion conversational exchanges monthly, using extensive datasets and advanced safety features to improve customer experience with Conversational AI. Role Overview The Senior Support Engineer serves as a technical expert for customers in the EMEA region. This role focuses on resolving complex technical issues, mentoring teammates, and acting as a bridge between customers and internal product teams. What You Will Do Address advanced technical concerns from customers across the EMEA region. Diagnose and resolve complex problems for global clients, aiming for high customer satisfaction. Take ownership of escalated support cases and resolve advanced technical challenges. Develop subject matter expertise in specific technical areas or platform features, and work with product developers to improve support tools and troubleshooting methods. Act as the main support liaison between customers, Product Management, Engineering/R&D, and other business units. Share customer feedback with development and service teams to address recurring issues. Mentor and train team members to handle technical escalations, reducing the need for further escalation. Analyze pain points and recurring issues, and help refine processes and requirements for better support tools and solutions. Lead or contribute to internal projects within the Support organization.

Ocadogroup is hiring a Senior Software Engineer in Sofia, Bulgaria. This position focuses on designing, developing, and implementing software solutions that support the company’s business goals. Role overview The Senior Software Engineer will work closely with colleagues from different teams to build and deliver products that align with customer needs. The role involves hands-on development and active participation in the full software lifecycle, from concept to deployment. What you will do Create and refine software designs to address business challenges Develop, test, and implement new features and applications Collaborate with cross-functional teams to ensure product quality Requirements Experience designing and building software solutions Ability to work collaboratively with colleagues from various disciplines Strong interest in technology and delivering results that make a difference

Role Overview Lifted An Upwork Company is hiring a Senior Web Software Engineer in Sofia. This position focuses on building and maintaining web applications that meet high standards for quality and user experience. The role involves hands-on design, implementation, and ongoing support of web projects. What You Will Do Design and develop web applications from concept through deployment Implement features that improve usability and performance Maintain and update existing web solutions as requirements evolve Collaborate closely with team members to deliver reliable results What We Look For Strong experience with web development technologies Commitment to writing clean, maintainable code Ability to work well with others and share knowledge Focus on delivering a smooth, effective user experience

About the Role Entain is looking for a Senior Software Engineer with deep experience in Angular to help build and improve software that shapes our user experience. This position is based in Sofia. What You Will Do Develop and maintain Angular applications that support our products and services Work closely with engineers and designers to solve technical challenges Contribute to decisions that improve code quality and user experience Help deliver reliable, high-quality software in a collaborative environment Who We’re Looking For Strong background in Angular and front-end development Experience working on complex software projects Comfortable collaborating with cross-functional teams Motivated to make a real impact on products and users