Senior Frontend Engineer for AI-Driven Applications

Why Choose Valtech?At Valtech, we pride ourselves on being a leading experience innovation company, trusted by some of the most renowned brands globally. Our team enjoys numerous growth opportunities, a culture driven by our core values, international career prospects, and the ability to influence the future of experiences.The OpportunityJoin us at Valtech, where an environment focused on continuous learning, impactful contributions, and professional development awaits you. Whether you are innovating new digital solutions, redefining traditional paradigms, or creating next-gen customer experiences, your contributions will be pivotal in transforming industries.

Join our team at Progressoft as a Senior AI Engineer, where your passion for transforming data into intelligent, production-ready solutions will thrive. In this remote role, you will engage with the entire AI stack, from classical machine-learning models to cutting-edge large language models (LLMs), computer vision pipelines, and analytics/forecasting workflows. If you are enthusiastic about data exploration, model development, and delivering reliable AI services, we are eager to connect with you.Key ResponsibilitiesModel Development: Design, train, fine-tune, and assess models across various methodologies including classical ML, deep learning (CNNs, transformers), and generative AI (LLMs, diffusion).Data Exploration & Analytics: Perform exploratory data analysis, statistical testing, and forecasting to guide feature development and business KPIs.End-to-End Pipelines: Create reproducible workflows for data ingestion, feature engineering, training, CI/CD, and automated monitoring.LLM & Agentic AI Engineering: Develop prompts and retrieval-augmented generation (RAG) pipelines; fine-tune LLMs on specialized datasets to enhance accuracy and meet product specifications.AI Automation & Integration: Deploy AI components as micro-services; integrate with orchestration tools (Airflow, Prefect) and business APIs to streamline decision-making processes.Continuous Learning: Stay updated on advancements in LLMs, vision, and analytics; share knowledge and best practices with the engineering team.Mentorship: Provide guidance to junior engineers and contribute to shaping technical direction and engineering excellence.

We are seeking an exceptionally talented Senior Java Engineer who also possesses strong Python skills to join our dynamic team. In this role, you will primarily focus on designing, developing, and maintaining high-performance, scalable, and secure applications utilizing Java, while employing Python for automation, scripting, data processing, and integration tasks. This position is perfect for an engineer who excels in Java development but is also comfortable leveraging Python as a supplemental language when necessary.

N-iX is actively seeking a Senior Python Engineer with experience in Go or Java to become a vital member of our dynamic product team, which consists of approximately 8 engineers dedicated to developing a sophisticated and impactful software platform. In this role, you will contribute to both backend and frontend development, constructing scalable backend services and creating user-friendly frontend interfaces. You will leverage AI-driven development tools to enhance productivity and code quality. Our team adheres to Agile methodologies, emphasizing clean architecture, ownership, and a commitment to continuous improvement. As a key developer, you will participate in creating a next-generation enterprise solution for endpoint protection (EPP) and endpoint detection & response (EDR) that operates across various platforms, including Windows, macOS, and Linux. This solution is engineered to prevent, detect, respond to, and remediate cyber threats in real-time, encompassing malware, ransomware, and advanced persistent threats.

Role overview nix is hiring a Senior AI Engineer based in Europe or Ukraine. This role focuses on building and improving AI-driven products. The Senior AI Engineer works closely with colleagues from different disciplines to design, develop, and implement advanced AI models. The position plays a key part in shaping technical solutions that support and expand nix’s product lineup.

Join us as a Senior Python Developer where you will play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and maintain high-quality applications. Your expertise in Python and deep understanding of software development principles will be essential in driving innovation within our projects.

Join Eleks as a Senior AI Engineer and spearhead cutting-edge Proof of Concept (PoC) projects that redefine the future of technology. In this role, you will leverage your expertise in artificial intelligence to design, develop, and implement innovative solutions that address complex business challenges.As a remote team member, you will collaborate with a dynamic group of professionals who are passionate about technology and innovation. You will play a crucial role in shaping our AI strategies and ensuring the successful delivery of our projects.

Skelar is a venture builder focused on creating innovative tech companies that operate under the principles of venture capital. We collaborate with co-founders to assemble strong teams and launch product-driven IT businesses that excel in global markets.We are currently expanding our team and seeking a Senior AI/ML Engineer to play a pivotal role in developing our flagship product—an AI Stylist that offers personalized styling solutions. This is an opportunity for you to eventually lead our AI initiatives.Dressly launched in 2024 and has quadrupled its growth in the last six months. We anticipate a fivefold increase in growth by 2026 compared to 2025. With a steady influx of users who love our AI features, including Virtual Try-On, Color, Body, and Outfit Analysis, we are building internal AI expertise. We need a Senior AI/ML Engineer to architect our models today and lead our AI team in the future.Why join us now?This is your chance to join a product at a crucial growth stage, influence technical decisions from day one, and pave your way to becoming a Lead AI/ML Engineer as we build our team from the ground up.Technology StackWe are looking for an engineer with a solid technical foundation who is ready to take responsibility for tool and architectural pattern selection. Our current focus includes the following technologies, but you will have the autonomy to choose and implement many components:Languages and Frameworks: Python (PyTorch / TensorFlow / JAX)GenAI & LLM: LangChain / LlamaIndex, Vector Databases (Pinecone, Milvus or similar)Infrastructure & MLOps: GCP (Vertex AI, GKE), Docker, Kubernetes, MLFlow or other orchestration and monitoring toolsData: PostgreSQL, BigQuery, ETL process toolsWhat Matters to UsYou have 7+ years of experience in ML/AI with a proven track record of deploying models in production.You understand the GenAI ecosystem: not just API usage but knowledge of LLM architectures, fine-tuning methods, and Retrieval-Augmented Generation (RAG)....

N-iX is seeking a talented and experienced Senior Back-end Engineer (Java & Python) to enhance our dynamic team. The Backoffice Support Team (BST) is responsible for the development and maintenance of systems and tools utilized by our internal backoffice teams such as Customer Service and Operations. Our mission is to streamline customer and commercial partner management through robust internal support platforms and workflows. Key responsibilities include: Managing our primary ticketing system, Zendesk. Overseeing Postbox, our internal customer communication hub. Developing custom integrations with core systems and various internal services. Ensuring operational efficiency by providing reliable, scalable, and well-integrated tools for internal users.

Join Viseven Group, a premier international MarTech company specializing in innovative interactive content and cloud solutions tailored for global pharmaceutical enterprises since 2009. Our commitment to continuous growth and self-improvement is embedded in our corporate DNA. Our unique developments and methodologies are actively utilized in over 50 countries worldwide, and our solutions are showcased at major industry events in Barcelona, Philadelphia, London, and more.Our rapidly expanding team comprises over 700 highly skilled technical and non-technical professionals, including front-end and back-end developers, business analysts, and managers. Together, we create, localize, and customize applications across our offices located in Zhytomyr (Ukraine), Tallinn (Estonia), Poznań (Poland), New Delhi (India), and Bridgewater (USA).Role Description:We are seeking a Senior AI Engineer to join our AI team for our product eWizard.

Become a pivotal member of our Chatbot team at Wix, where your expertise in AI technology will help revolutionize customer experiences. As a Senior AI Server Engineer, you'll be responsible for the creation of sophisticated, context-aware features that will transform our Customer Care Chatbot into an essential resource for users navigating their Wix journey. Your role will encompass the entire development cycle—from exploring cutting-edge AI methodologies to implementing scalable features that provide meaningful value to millions of users.You will:Architect, develop, and integrate advanced AI functionalities utilizing the latest LLM and NLP technologiesEngage in research and experimentation to discover innovative solutions and apply high-level models to real-world customer care challengesTake full ownership of feature development, collaborating with product teams to define requirements, estimate scope, implement solutions, and monitor performanceOptimize system performance, stability, and reliability to ensure an uninterrupted, high-quality serviceParticipate in architectural and technical discussions aimed at enhancing system design and developer experience

Innovecs is seeking talented Senior Backend Engineers (AI-Driven) to join our dynamic team, dedicated to enhancing our B2B and B2C warehouse management ecosystem. The ideal candidate will be an AI-Native Software Engineer, skilled in not only coding but also in orchestrating AI agents and assistants to optimize the Software Development Life Cycle (SDLC). You will play a pivotal role in delivering robust, scalable microservices at speeds that traditional development practices cannot achieve.

Join the dynamic team at ELEKS within our Quality Assurance Office, as we seek a talented and driven Strong Middle / Senior Automation Test Engineer (Python) to work on exciting projects in Ukraine, Poland, Croatia, and Argentina. ABOUT THE PROJECT This role involves working on a cutting-edge web-based platform designed for financial advisors. The client portal empowers advisors to tailor the user experience by enabling or disabling various features and functionalities for each client.

N-iX is on the lookout for a talented Middle Java Engineer with proficiency in Python to be a part of our innovative team. This role focuses on the design, development, and maintenance of high-performance, scalable, and secure applications using Java, while also leveraging Python for various automation, scripting, data processing, or integration tasks. We are seeking an engineer who excels in Java development and is comfortable using Python where necessary. Key Responsibilities:Design, develop, test, and maintain applications and services utilizing Java as the core technology stack.Produce clean, efficient, and maintainable code adhering to best practices and coding standards.Utilize Python for automation, data manipulation, system integration, and auxiliary services.Enhance applications for optimal performance, scalability, and security.Troubleshoot, debug, and address technical issues effectively.Engage in communication with internal product owners and stakeholders to align on project requirements.Document technical solutions and ensure current knowledge of system architecture.

Intetics Inc., a premier American technology firm specializing in tailored software application development, the creation of distributed professional teams, software product quality evaluation, and comprehensive digital solutions, is seeking skilled Technical Interviewers.Key Responsibilities: Conduct thorough technical interviews for Python developer positions, evaluating candidates on their programming expertise, problem-solving capabilities, and knowledge of Python and its associated frameworks. Work closely with the recruitment team to craft interview questions and assessment criteria that align with job requirements and adhere to current industry standards. Deliver in-depth feedback and evaluations to hiring managers to facilitate informed recruitment decisions. Keep abreast of the latest advancements in Python and related technologies to ensure assessments are both effective and relevant.

Role overview nix seeks a Senior AI/ML Engineer to lead the design and scaling of AI solutions within the Palantir Foundry and AIP ecosystem. This position is available for candidates based in Europe or Ukraine. What you will do Design and build AI systems ready for production, tailored to enterprise needs Create applications that use large language models (LLMs) and retrieval-augmented generation (RAG) pipelines Develop and maintain machine learning models with a focus on reliability and scalability Work closely with cross-functional teams to guide architecture and implementation decisions Contribute to the company’s AI capabilities through practical engineering and thoughtful design Key technologies Palantir Foundry AIP ecosystem Large language models (LLMs) Retrieval-augmented generation (RAG) pipelines General machine learning frameworks Location Candidates must be based in Europe or Ukraine for this role.

Role Overview Trinetix is seeking an experienced Python Developer to join our remote team in Ukraine. This role centers on high-impact projects for US-based clients in consulting and finance. The work involves building solutions that help clients automate processes, improve efficiency, and streamline operations. Our team applies advanced technologies, including artificial intelligence (AI) and machine learning (ML), across the full project lifecycle. What You Will Do Develop and maintain applications in Python, integrating AI/LLM, AWS GlueJobs, Azure Functions, and related technologies. Design, build, and deploy machine learning models to address complex business challenges. Implement ETL workflows using AWS GlueJobs and Azure Functions for large-scale data processing and transformation. Work closely with cross-functional teams to define requirements, design features, and deliver product enhancements. Tune applications for high performance, scalability, and reliability. Troubleshoot and resolve software bugs and technical issues. Keep up with emerging technologies and industry trends to ensure our solutions remain competitive. Mentor and support other developers on the team. Write clean, well-documented, and maintainable code. Participate in code reviews to help improve code quality across the team.

Join SKELAR, a pioneering Ukrainian venture builder that is shaping the future of tech businesses on a global scale. We collaborate with co-founders to assemble formidable teams that excel in international markets.Currently, SKELAR operates multiple businesses across various sectors, from EdTech to marketplaces. Our companies consistently rank among Ukraine's top startups and product firms, frequently appearing in prestigious publications like TechCrunch and Wired.With a robust team of over 1,000 professionals, we pride ourselves on our exceptional expertise and ambitious goals. Our talent is our most valuable asset, and we strive to build our businesses alongside the best in the industry.We are excited to invite applications for the role of Senior Product Engineer (AI-Native Full-Stack) within our R&D Department.At Brighterly, we are redefining online education for children by creating an ecosystem that serves as the ultimate destination for learning mathematics. Our mission is to develop the next EdTech unicorn in a market valued at $130 billion.Technology stack: https://skelar-tech.github.io/Brighterly/Key challenges include:Rapid Prototyping: Build functional MVPs (Web & Mobile) from scratch within short sprints.AI Integration: Implement LLM, agent architectures, and RAG systems into our products.Fullstack Delivery: Independently develop features from database schema to final animations on the frontend.Cross-platform Experimentation: Create mobile applications using AI tools on Flutter/React Native to validate market hypotheses.Architecture for Speed: Design flexible architecture that allows for rapid shifts in development direction without pain points.What we value:Senior Level Mindset: You understand how scalable systems are built, even those generated by AI.AI-Fluency: Familiarity with tools like Claude, Cursor, Windsurf, and v0.dev is essential.

N-iX seeks a Lead AI/ML Engineer based in Ukraine to shape and advance the company’s AI initiatives. This position focuses on designing, evaluating, and refining advanced AI systems, with particular attention to Retrieval-Augmented Generation (RAG) and Natural Language Processing (NLP) solutions. The role also involves working closely with clients to guide technical decisions and develop strategies for integrating AI into business processes. Collaboration with stakeholders is central to this position. Delivering AI solutions that improve operations, streamline workflows, and maximize data value is a core part of the job. Throughout each project, scalability, quality, and cost-effectiveness are key priorities. Main Responsibilities Design and develop AI-driven systems using Palantir Foundry AIP, including RAG pipelines, large language model (LLM) applications, and NLP workflows for document understanding and knowledge extraction. Oversee the full lifecycle of AI solutions, from data ingestion and embedding generation to retrieval, reasoning, and response generation. Work with AI/ML engineers to deploy models and LLM-based solutions, ensuring reliability, scalability, and high performance. Lead technical discovery, evaluate potential AI solutions, clarify architecture, and identify risks or improvement areas. Analyze and enhance RAG pipelines, focusing on retrieval quality, chunking strategies, embeddings, and hybrid search methods. Assess AI systems for scalability, multilingual capabilities, and the balance between cost and performance. Advise on AI architecture evolution, including platform selection, vendor dependencies, and migration planning. Establish standards for LLMOps and MLOps, covering evaluation, prompt engineering, monitoring, and iterative updates. Promote ethical AI practices, emphasizing data governance, security, and compliance. Mentor engineers and foster collaboration among AI, data, and product teams.