Conversion Rate Optimization Manager

Senior Software Engineer - Conversational AI & Automation Aisera is at the forefront of AI Copilot solutions, leveraging AiseraGPT and Generative AI to revolutionize business operations and enhance revenue growth through a self-service model. Our AI Copilot employs industry-specific and domain-specific LLMs to create human-like interactions and automate requests through intelligent workflows. With over 400 integrations and more than 1200 pre-built workflows, we empower our clients to achieve over 75% automation and reduce costs by up to 90%. We have been recognized with numerous accolades, including FastCompany's Best Workplaces for Innovators, the Inc 5000 Award for Fastest Growth, Forbes AI50, EY Entrepreneur of the Year 2023, CNBC Upstart 100 Top Startup, Gartner Cool Vendor, and many more. Our experienced founding team has successfully led multiple startups and acquisitions. We foster a culture of responsibility and ownership, hiring individuals from diverse backgrounds and experiences. Our team members are empathetic towards our customers and each other, creating a supportive and innovative environment. Join our vibrant and fast-paced team, and be part of our mission to transform the industry. The Role: We are seeking a talented software engineer with extensive hands-on experience who can offer technical guidance and mentorship to team members. As a Senior Engineer, you will be instrumental in designing, developing, and maintaining our Conversational AI & Automation components and features, emphasizing microservices architecture. Your expertise in product development and technical leadership will significantly influence our innovative solutions and enhance existing products. This role is based out of Athens, Greece (Remote) Responsibilities: Design, build, and deliver scalable, real-time systems, prioritizing quality, scalability, and operability. Collaborate with product management, data science, and engineering teams to deliver end-to-end solutions that provide maximum business value to customers. Review and provide constructive feedback on technical designs and code modifications to ensure high availability, scalability, maintainability, and code quality standards. Troubleshoot and resolve complex technical issues that arise in production, ensuring timely resolutions. Proactively identify areas for technical improvement and implement solutions to enhance system performance.

Established in 2018, Causaly is revolutionizing the realm of enterprise-level scientific research with our innovative AI platform. Our technology empowers researchers to efficiently discover, visualize, and interpret vital biomedical knowledge while automating essential research workflows, thus accelerating the solutions to some of the most pressing health challenges of our time.We partner with leading biopharma companies and institutions, addressing diverse use cases in Drug Discovery, Safety, and Competitive Intelligence. For more insights on how we enhance knowledge acquisition and decision-making, explore our blog posts here: Blog - CausalySupported by prestigious venture capital firms including ICONIQ, Index Ventures, Pentech, and Marathon, we are on a mission to transform research outcomes in the biomedical field.About the TeamWe are seeking skilled AI engineers to join our dynamic team, utilizing generative AI and intelligent agents to help scientists uncover novel insights from extensive biomedical literature and datasets.Delivering an accelerated research experience demands more than merely adopting the latest LLM model; it requires building trust with our users through integrating effective guardrails, biomedical curation, consistent updates, and robust deployment practices—ensuring our platform meets all the research needs of our users.We invite AI engineers who are passionate about this mission to apply AI in reshaping how biomedical professionals conduct their research and daily explorations.Your Responsibilities· Design and implement comprehensive ML/AI solutions from conception through deployment and monitoring, balancing innovative techniques with practical considerations to achieve measurable outcomes.· Employ sound software engineering practices, including modular design, testing, code reviews, CI/CD, and observability, to ensure AI systems are dependable, maintainable, and production-ready, while being adaptable to future needs.· Select the optimal approach for each challenge, evaluating traditional ML and NLP techniques, LLM-based solutions, and agentic strategies to weigh trade-offs between speed, cost, complexity, interpretability, and performance.· Collaborate closely with product, design, and engineering teams to define project scopes, establish success metrics, and iteratively enhance user-facing features powered by AI.

Join the dynamic team at Finartix as a Senior Software Engineer specializing in .NET technologies. We are seeking a motivated and talented Backend Application Developer to contribute to our Software Engineering Practice. You will play an essential role in designing, implementing, and managing innovative technology-driven solutions that enhance our clients’ operational efficiency across various sectors. Key ResponsibilitiesEngage in the complete software development lifecycle including designing, testing, and maintaining bespoke applications.Adhere to established programming standards for naming conventions, security, performance, and ensure comprehensive code documentation.Act as a trusted technical advisor to clients, offering solutions tailored to their needs.Provide ongoing support to both business and IT users for existing applications.

Join agileactors as a Senior Software Engineer in Test, where you will play a pivotal role in ensuring the quality of our software products. You will leverage your expertise in testing methodologies and software development to design and implement automated tests, contributing to our commitment to excellence and innovation.

Founded in 2018, Causaly is revolutionizing enterprise-scale scientific research with its advanced AI platform, enhancing human productivity. Our innovative technology empowers researchers to discover, visualize, and interpret biomedical knowledge while automating essential research workflows, driving progress against significant global health challenges.We collaborate with some of the largest biopharmaceutical companies and institutions worldwide, addressing diverse use cases in Drug Discovery, Safety, and Competitive Intelligence. To learn more about how we facilitate knowledge acquisition and enhance decision-making, explore our informative blog posts here: Blog - CausalyOur company is backed by leading venture capital firms, including ICONIQ, Index Ventures, Pentech, and Marathon.

Role overview Speechify seeks a Senior Software Engineer to strengthen the core user experiences in its products. The position involves shaping the way people interact with Speechify’s tools by designing, building, and maintaining software that sits at the heart of the user journey. Key responsibilities Collaborate with teams from different functions to define and refine product features Create and maintain software aimed at improving the overall user experience Use advanced engineering expertise to guide projects from initial concept through to launch Ensure each deliverable meets a high standard of quality Location This role is based in Athens, Greece.

Our Values: Trust | Respect | Team SpiritOur Secret: Our talented team members who make a difference through their integrity and expertise!Join Us as a Senior Full-Stack Software EngineerFull-time Contract | Athens, GreeceWe are seeking a highly motivated, adaptable, and detail-oriented Senior Software Engineer with a knack for crafting innovative features. As part of our dynamic team, you will design, develop, and test software solutions that cater to both business requirements and customer needs.Your Responsibilities Will Include:Developing robust, testable features using Angular (version 9 and above) and Java (version 8 and above);Implementing algorithms to tackle complex problems;Facilitating application delivery across various environments using CI/CD practices;Creating technical documentation and proof-of-concepts to guide design decisions;Mentoring and training fellow team members;Planning and executing technology upgrades.

Join Workable, the leading provider of an all-in-one HR suite designed for over 31,000 businesses and HR teams. Our innovative solution combines the globally recognized Applicant Tracking System (Workable Recruiting) with a comprehensive employee management system (Workable HR). At Workable, we empower organizations to prioritize what matters most: recruiting the right talent and nurturing their development.We pride ourselves on our vibrant and collaborative culture, where talented individuals thrive while having fun, learning, innovating, and assisting others in their growth. We respect every team member, hire top talent, and ensure every experience is memorable.We are expanding rapidly and are seeking a Senior Software Engineer to enhance our Product team!Our engineering culture is robust, emphasizing customer-centric design. We are involved in a variety of stimulating application development areas, including web and mobile applications, infrastructure, performance optimization, UI/UX design, integration with numerous web services, API development, modern front-end frameworks, scalability, video technology, natural language processing, data science, and usability engineering. We practice Agile methodology and test-driven development daily!Our technology stack includes Rails, Node, Python, and Java applications utilizing PostgreSQL, MongoDB, RabbitMQ, Redis, and Elastic, all deployed on Kubernetes and GCP. We are on the lookout for developers across all domains of SaaS application development, with various teams focusing on different aspects from core applications to mobile/tablet applications and beyond. We'll align you with the right team based on your expertise and interests.

Role overview Speechify seeks a Senior Software Engineer with experience in Windows and desktop applications for its Athens, Greece office. The focus is on building software that enhances user experience and accessibility for a broad audience. What you will do Design, develop, and maintain desktop applications for Windows platforms Collaborate with colleagues across teams to deliver high-quality software Contribute to technical decisions and help guide project direction Work to ensure applications are scalable, efficient, and reliable

Role Overview Intralot is seeking a Senior Software Engineer with strong Java expertise to help build and improve software for gaming and lottery systems. This role focuses on designing and developing solutions that support the company's products and services. What You Will Do Develop and maintain Java-based applications for gaming and lottery platforms. Collaborate with team members to solve technical challenges and deliver new features. Contribute to the architecture and design of scalable, reliable systems. Location This position is based in Athens, Attikí, Greece.

Role overview Ballys Central Lotsa is looking for a Senior Java Software Engineer in Athens, Attikí, Greece. This position focuses on designing, building, and maintaining complex software systems that support core business needs. What you will do Design, implement, and support Java-based software solutions Work with teams across disciplines to clarify and refine project requirements Help ensure deliverables meet quality standards and business goals

The TeamOpenBet stands as a premier global provider in the betting and gaming entertainment industry, partnered with over 200 clients to craft unforgettable winning moments for millions of players globally. From managing bets during landmark events such as the FIFA World Cup and the Super Bowl to developing innovative products like BetBuilder, we are committed to enhancing the player experience with top-tier content, state-of-the-art technology, and robust player protection mechanisms.For more than 25 years, our unparalleled platform has fueled the most prominent betting brands, maintaining optimal performance with 100% uptime, unmatched scalability, and rapid response times. With 85 licenses and a clientele that includes 20 operators from the World Lottery Association, our team of over 1,200 experts across 14 countries remains at the forefront of the industry. Join OpenBet and elevate your career by being part of a dynamic global team that is shaping the future of betting entertainment for millions.The GoalAs a Senior Software Engineer at OpenBet, you will gain exposure to vital systems, along with comprehensive training and mentorship to advance both our software and your professional growth.Your Responsibilities:Develop new features and functionalities for high-transaction, large-scale betting platforms and systems;Lead design and code reviews;Identify and resolve performance bottlenecks in the software;Design modular, scalable, and portable solutions; spearhead enhancements to system architecture;Mentor, guide, and potentially manage junior software engineers;Collaborate with customer stakeholders to communicate complex technical concepts.Your Profile:A bachelor’s degree in computer science, engineering, or information systems from a recognized institution;Proven programming proficiency in Java;Strong foundational programming skills (data structures, algorithms);Experience in database design and optimization (any vendor);Familiarity with web technologies and internet protocols (SOAP, WS-*, ReST, XML, HTTP, TCP/IP);Exceptional communication skills, both written and verbal;6+ years of professional software development experience.Preferred Skills and Experiences:Experience in Linux development;Proficiency in TCL;Web development experience with React, HTML, HTML5, and CSS;Knowledge of Agile methodologies, Scrum, BDD, TDD;Experience with Jenkins or other CI tools;Good understanding of Git or other version control systems;Scripting knowledge in Bash, Perl, Python, and JavaScript;Experience developing software that integrates with third-party systems;Background in software development for high-availability environments.

The TeamOpenBet stands as a premier global authority in the realm of betting and gaming entertainment, relied upon by over 200 partners to craft unforgettable winning experiences for millions globally. From managing bets during monumental events such as the FIFA World Cup and Super Bowl to innovating next-generation products like Bet Builder, we are constantly reshaping the player experience with superior content, innovative technology, and advanced player protection measures.With a legacy spanning over 25 years, our unparalleled platform has fueled the most recognizable betting brands, guaranteeing peak performance with 100% uptime, unmatched scalability, and speed. Holding 85 licenses and counting, alongside 20 World Lottery Association operators in our clientele, we boast a robust team of over 1,200 experts across 14 countries. Join OpenBet to elevate your career and collaborate with a global team at the forefront of shaping the future of betting entertainment for millions.The GoalWe are in search of a driven and ambitious Senior .NET Software Engineer to propel Sportcast's growth from our European offices.As a Senior Software Developer within the Trading & Data Solutions team, you will engage in a cross-functional capacity, developing, deploying, and supporting various projects and initiatives. You'll have the chance to work on diverse projects, producing code that is both testable and maintainable. As a valued team player, your contributions will be instrumental in team design, scoping, and prioritization discussions. This team is dedicated to assisting the business in achieving scalability through automation.Your role will encompass the development and maintenance of real-time systems.What You’ll Be DoingAnalyze and question business requirements critically.Actively participate in solution design efforts.Ensure our systems' performance, security, and availability.Develop high-quality, high-performing code aligned with business needs.Optimize solutions to support service levels while minimizing cloud expenses.Mentor fellow team members.Automate processes wherever feasible.Challenge existing practices to enhance our patterns, standards, and procedures throughout the organization.The Player5+ years of experience with .NET/.NET Core and C#Familiarity with Unit Testing, serverless technologies like Azure Functions, and containerized microservices using Azure Container Apps or AWS equivalentsExtensive expertise in SQL-based databases, including MSSQL and PostgreSQL, with a strong grasp of query optimization, indexing strategies, and performance tuning for large-scale, high-throughput applicationsProficient in utilizing GitHub Copilot and Cursor AI to enhance development speed while ensuring secure and compliant coding practices

Role Overview Arista Networks is looking for a Senior Software Engineer with deep experience in Linux Kernel development and C++. This position is based in Athens. What You Will Do Design and implement software solutions that improve performance and reliability for Arista’s products. Work closely with other teams to troubleshoot, analyze, and optimize existing Linux Kernel code. Develop new features and functionality, helping to ensure systems remain efficient and scalable. Contribute technical expertise to support Arista’s networking solutions. Who We’re Looking For Strong background in Linux Kernel development. Proficient in C++. Skilled at collaborating with cross-functional teams. Experienced in troubleshooting and optimizing complex systems.

IKH is a premier Software and Robotics Solutions provider making significant strides in the global market. Over the past few years, our team has expanded by over 80%, leading us to relocate to a modern, spacious office. As we embark on 2025, we're excited to introduce several innovative projects focused on digital transformation, custom software development, and robotics.We are currently seeking a talented Senior Java Software Engineer with a robust technical background and extensive experience to tackle challenging outsourced projects.In this position, you will not only develop complex project tasks but also supervise the development efforts of junior developers. You will analyze functional requirements and decompose tasks for team assignment.To thrive as a Senior Software Developer, you should possess profound knowledge of Java technologies and exhibit strong leadership capabilities. Exceptional communication skills are essential as you will collaborate with clients and various development teams.Your Daily Responsibilities:Design, develop, and maintain the back-end of large-scale web-based Java EE/Spring applications.Engage in technical analysis, documentation, implementation, and integration.Test and manage early support for core software tools and assets developed during software projects.Translate requirements into functional specifications.Employ BDD (Behaviour-Driven Development) methodology in coding and software implementation.Align solutions with client needs, particularly in collaboration with the architecture team.Execute integrations with other applications and developed modules.Provide assistance with deployment and configuration management.

Join AbZorba Games, a leading studio within Greentube and NOVOMATIC Interactive, renowned for crafting exceptional social casino games. As we enhance and expand our mobile casino application, 'Diamond Cash Slots', we are on the lookout for a talented Senior Back-End Software Engineer to enrich our dynamic development team.In this role, you will be the architect of the core mechanics behind our slot games and the underlying server-side logic that shapes player experiences. Your key responsibilities will include designing, developing, and maintaining robust back-end systems that support our array of slot titles. This encompasses everything from implementing core game features to ensuring our game servers' integrity and performance. Collaborating with game designers, front-end developers, and product stakeholders, you will help breathe life into innovative slot games and features.The ideal candidate will be enthusiastic, team-oriented, and possess a solid grasp of Game Dynamics.Note: This position is fully remote but will require occasional travel to our Athens office every few months for team meetings and workshops. Therefore, preference will be given to candidates residing in Greece.

Join Sunlight Group, where we are pioneering the future of energy storage for industrial and advanced technology applications. Our commitment to performance and ongoing improvement fuels our mission to transform energy storage solutions for a sustainable future. We operate with profound environmental responsibility, fostering a culture of openness and respect. Leveraging data and insights, we craft innovative, customer-centric solutions that drive the transition to an all-electric future through high-quality, cutting-edge technologies. Our entrepreneurial spirit thrives in an agile and collaborative environment, empowering our team members to grow, contribute, and realize their full potential.We are seeking a passionate Applications Software Engineer to join our R&D Smart Energy Systems team. If you are looking for a role where your software directly influences real-world energy systems and supports the clean energy transition, this is your opportunity to make a significant impact. Engage at the crossroads of clean energy, AI, and real-time, cloud-native software as part of a diverse R&D team. You will be at the forefront of the clean energy AI revolution, playing a vital role in developing intelligent, sustainable infrastructure.Key Responsibilities:Design, develop, test, and deploy high-quality software services and applications.Build and maintain real-time/near-real-time message-driven components (publishing/subscribing, event handling, state synchronization).Collaborate with cross-functional engineers to define application requirements, new features, and enhancements.Contribute to software architecture and reliability patterns (retries/backoff, fault handling, duplicate prevention/idempotency, graceful degradation).Write clean, well-documented, maintainable code; participate in code reviews and continuous improvement.Identify and troubleshoot software defects and operational issues promptly.Conduct thorough testing (unit/integration) to ensure correctness, reliability, and performance.Create and maintain documentation (technical specs, architecture notes, operational guides).

Satori Analytics develops data and AI solutions for clients in industries such as FMCG, retail, manufacturing, and financial services. With a team of over 100 technology professionals based in Athens, the company manages projects that span the entire data lifecycle, from ingestion through to deploying AI applications. Projects range from building cloud infrastructure for fintech clients to delivering predictive analytics for airlines. Role overview The AI Engineer designs and builds AI workflows and models, focusing on Python and large language models (LLMs). This role involves close collaboration with data scientists, developers, and domain experts to turn business needs into practical AI and machine learning solutions. The position combines research, hands-on engineering, and teamwork within a growing group. What you will do Design and implement AI models and workflows using Python, with a particular focus on large language models (LLMs). Collaborate with data scientists, software engineers, and subject matter experts to exchange ideas, review progress, and solve challenges together. Research new trends in AI and machine learning, applying relevant techniques to current projects. Translate business challenges into actionable machine learning or AI solutions, and communicate results clearly to stakeholders. Document code and processes to support clarity and reproducibility for the team. Location This position is based in Athens, Attica, Greece.

About Satori Analytics Satori Analytics is based in Athens and delivers Data and AI solutions to global brands. The team works across the full data lifecycle, from ingestion to AI applications, and builds technologies for industries such as fintech, airlines, FMCG, retail, manufacturing, and financial services. With more than 100 technology professionals, Satori Analytics is driving data innovation in South-Eastern Europe and beyond. Role Overview: Junior AI Engineer This role focuses on designing and implementing AI workflows and models, with a strong emphasis on Python and large language models (LLMs). The Junior AI Engineer works closely with data scientists, developers, and domain experts to deliver scalable AI solutions and translate business needs into actionable outcomes. What You Will Do Design and implement AI workflows and models: Use Python and LLMs to build scalable solutions that connect AI/ML with software engineering. Collaborate with multidisciplinary teams: Work alongside data scientists, developers, and subject matter experts to move projects forward and share knowledge. Research and apply new techniques: Stay current on AI trends and incorporate emerging methods into your work. Translate business problems: Turn complex business challenges into practical ML/AI solutions, and communicate results clearly. Document your work: Keep thorough, clear records so projects remain reproducible and easy for teammates to understand. Location Athens, Attica, Greece