Lead Flutter Engineer

Why Choose Valtech? At Valtech, we are a leading experience innovation company and a trusted partner to some of the world's most recognized brands. We provide our team members with abundant opportunities for growth, a culture driven by our core values, international career prospects, and the chance to influence the future of digital experiences.The Opportuni…

OVERVIEWAre you a search engine expert with an uncanny ability to find information using just a few keywords? Do you often anticipate what someone is about to say? If this resonates with you, we have an exciting opportunity to utilize your skills!Welocalize is on the lookout for individuals fluent in Portuguese (Portugal) to join our client's project as a Search Quality Rater.In this role, you will leverage your skills in understanding user intent to enhance the online search engine experience. Your main objective will be to contribute to the development and improvement of AI data. Simply put, you will provide both subjective and objective evaluations based on established project guidelines.You will carry out tasks in Portuguese (Portugal).This position offers the flexibility to set your own schedule to meet weekly targets. Please note that support from the project management team will only be available during business hours (Monday-Friday, 9:00 AM - 5:30 PM Pacific).

Renesas Electronics Corporation seeks a Senior QA Engineer in Lisbon to drive software quality through full-stack automation. This position centers on building and executing thorough test plans and shaping automation approaches across the technology stack. Role overview This role focuses on designing comprehensive tests and developing automation strategies for software projects. The Senior QA Engineer will work to identify areas for improvement and implement solutions that enhance reliability and performance. Key responsibilities Create and execute test plans that cover both front-end and back-end systems Develop and refine automation strategies to streamline testing processes Collaborate with development teams to address quality issues and ensure robust releases Location This position is based in Lisbon.

Role Overview Renesas Electronics Corporation is looking for a Senior Software Engineer in Lisbon to help build and refine platform solutions used across a range of applications. This role involves close collaboration with colleagues from different disciplines to design, develop, and improve software that supports client requirements and drives system efficiency.

Location: LisbonCompany: aghanim About the Role aghamim is seeking an AI Solutions Engineer with a focus on multi-agent Large Language Model (LLM) systems. This position centers on designing and building agent-based solutions that interact with internal APIs and product workflows. The work goes beyond coding: a strong grasp of user needs and system reliability is essential. This role blends systems engineering and architecture, setting it apart from typical machine learning jobs. Expect to explore APIs and workflows independently, developing agent-driven integrations that fit seamlessly into the platform. Platform Context The product platform exposes many internal APIs. Agents interact directly with these APIs and product workflows. Use cases and workflows are diverse. Agents operate on small data volumes but require complex orchestration. Autonomous operation is key: agents must use tools, routing, memory, and fallback strategies effectively. Backend is primarily Python; frontend uses TypeScript. Main Responsibilities Agent Architecture and System Design Design and implement multi-agent systems, including orchestrator and worker agents. Define agent architecture, focusing on routing, memory, tool usage, and fallback strategies. Translate product requirements into scalable, reliable agent workflows. Ensure systems are maintainable, extensible, and robust. Agent Infrastructure and Development Build core infrastructure for agent execution, including tool calling and state management. Develop and maintain multimodal pipelines for text and image generation. Integrate and abstract model providers such as OpenAI, Anthropic, and self-hosted models. Implement custom tools and services to extend agent capabilities. Platform Integration Connect agents with internal platform APIs and product workflows.

Join Veeam Software as a Quality Assurance Automation Engineer specializing in Java!As a key member of our team, you will be responsible for designing, developing, and executing automated test scripts to ensure the quality and performance of our software products. Your expertise in Java will be pivotal in enhancing our testing frameworks and driving continuous improvements in our QA processes.

Join our dynamic team at Renesas Electronics as a Senior Backend Software Engineer. In this critical role, you will leverage your expertise to develop and enhance cutting-edge backend solutions that power our innovative products. You will collaborate with cross-functional teams to design scalable systems, ensuring high performance and reliability.

Renesa Electronics seeks a Senior Frontend Engineer based in Lisbon to develop and enhance web applications. This position plays a key part in shaping user experiences by collaborating with teams throughout the company. Role overview The Senior Frontend Engineer will take responsibility for building and refining web-based products. Technical expertise in modern frontend technologies is essential, as the work directly influences both the direction and quality of projects. Collaboration Expect to work closely with colleagues from various departments. Cross-team communication and cooperation are central to delivering software that serves users effectively. Requirements Strong background in current frontend technologies Experience building and improving web applications Ability to collaborate with diverse teams Based in Lisbon

Join the Kaizen Gaming Family!At Kaizen Gaming, the driving force behind Betano, we stand as one of the largest GameTech companies globally, operating across 19 markets. Our commitment to leveraging state-of-the-art technology empowers us to deliver unparalleled experiences to our millions of valued customers.Our vibrant team of over 2,700 diverse 'Kaizeners', hailing from more than 40 nationalities and spanning three continents, is what sets us apart. We take pride in being recognized among the Best Workplaces in Europe and have earned the prestigious Great Place to Work certification across our offices. Are you ready to Press Play on your potential?About the RoleAs a Senior Backend Engineer, you will be an integral part of a self-sufficient Agile team, collaborating closely with the Product Owner, Agile Delivery Lead, Automation Testers, and fellow Software Engineers to create a competitive edge for Kaizen while delivering a unique online experience to our customers. You will also engage with talented backend professionals within our Backend Chapter.Your Responsibilities Include:As a Senior Software Engineer at Kaizen, you will manage a variety of projects, ranging from our customer-facing websites and mobile applications to our internal tools and backend services, all designed to handle high volumes of traffic.Take full ownership of our applications throughout an engaging development journey.Develop innovative solutions from concept to production.Transform requirements into efficient and sophisticated technological systems, leveraging our large-scale, highly available infrastructure.Design, build, and maintain efficient, reusable, and reliable code.Explore new technologies to discover efficient solutions for everyday challenges.Deliver high-value features swiftly.Challenge existing processes and foster improvement within the team and product.

About Us At Riskified, we empower businesses to achieve ecommerce growth by mitigating risks. Our platform is trusted by some of the world’s most prestigious brands and publicly traded companies, offering guaranteed protection against chargebacks, combating fraud and policy abuse on a large scale, and enhancing customer retention. Our AI-driven fraud and risk intelligence platform is developed and managed by an extensive team of ecommerce risk analysts, data scientists, and researchers, analyzing each interaction to deliver real-time decisions and comprehensive identity-based insights. We proudly partner with remarkable companies across various industries, including Acer, Gucci, Lorna Jane, GoPro, and many more. We thrive in a collaborative environment, working alongside talented individuals to create and improve products that genuinely matter. The opportunities to innovate and contribute give us a sense of purpose, creating a lasting impact and motivating us to choose Riskified every day. About the Role As a Senior Full-Stack Engineer in Riskified’s Core Services Group, you will be responsible for designing, building, and maintaining end-to-end applications using diverse technologies. Working in a fast-paced, agile environment with cutting-edge tools, you will play a key role in expanding Riskified’s ecosystem. Our developers take full ownership of their work, from feature planning with Product and Design teams to technology selection, architectural design, coding, code reviews, deployment in a CI/CD environment, and ongoing monitoring post-deployment. The team primarily focuses on customer-facing applications, including a core web tool that enables merchants to review orders, take actions, and gain insights through advanced analytics. You will have the opportunity to engage in all aspects of development, whether that involves crafting precise UI, developing robust backend logic, or optimizing infrastructure for scalability. Our Technology Stack: Scala, Spark, Node.js, Ruby, React, Postgres, Elastic, Redis, AWS, Kafka, Docker, Kubernetes, CircleCI, and more. Your Responsibilities Design and develop a highly reliable, available, and scalable architecture for our core services and web applications in a promising new product. Deploy your code to production daily using advanced CI/CD pipelines. Actively manage production systems to ensure smooth operation. Contribute to planning the team roadmap and product development. Collaborate with design and product teams to define and implement new features.

Join Cross Border Talents as a Software Engineer, where you will play a pivotal role in understanding project objectives and phase-specific requirements.Your key responsibilities will include:Grasping the overall project vision and contributing to phase-wise requirements.Executing tasks aligned with specific requirements and ensuring the quality and timeliness of deliverables.Collaborating with team leads and members to devise optimal solutions.Participating in the review of test plans for various phases and integrations.

Join Our Innovative Team at Air AppsAt Air Apps, we envision a future where innovation meets ambition. Founded in 2018 in Lisbon, Portugal, our family-run company is dedicated to revolutionizing the way individuals and entrepreneurs manage their resources through our groundbreaking AI-powered Personal & Entrepreneurial Resource Planner (PRP). With over 100 million downloads globally, we are proud to be self-funded and operate in Lisbon and San Francisco.Our commitment to pushing boundaries drives us to redefine AI-driven solutions that enhance people's lives. As part of our team, you will have the opportunity to be a creative catalyst, developing products that empower users worldwide.Join us in our mission to transform resource management and make a meaningful impact.

At Arkadium, we believe in the joy of creating fun experiences, and for the past 20 years, we have done just that. As the creators of some of the world’s most-played games, including the iconic Solitaire that has graced countless Windows machines, our games are available on Arkadium.com, iOS, Android, and numerous prominent platforms worldwide.As a proud Evergreen business, our core values of Fierce Drive, Positive Energy, and Living Full Lives guide our operations and decisions.We are a privately held company (ensuring stability and a balanced approach to growth), founder-led (demonstrating passion for our craft), and we consistently earn accolades as a “Best Place to Work” – we are not your average gaming company.Recognized by 'Happiness Works' in 2023, 2024, and 2025 in Portugal, alongside 'Crain's Best Places to Work 2022' and 'Great Place to Work 2022 and 2023' in New York, we take pride in our culture!If you're excited about becoming an Arkadian, we would love to hear from you!OverviewArkadium is on the lookout for an outstanding and seasoned Senior Full-Stack Engineer to join our Core Tech team.Our Core Tech team operates with a backend-first philosophy, developing and refining shared services that power essential functionalities in Arkadium’s games and platforms. This includes authentication, chat, tournaments, friend systems, inventory management, microtransactions, and multiplayer infrastructure (Nakama) among other platform-wide capabilities.What You’ll DoLead the technical direction and delivery of complex, scalable full-stack systems utilized by live games.Design and make architectural decisions for backend and frontend systems, striking a balance between performance, scalability, and long-term maintainability.Develop and enhance backend services and APIs that support real-time, live-operated games.Seamlessly integrate backend systems with web-based frontends and browser games.Empower internal game teams by creating shared services, frameworks, and developer tools.Design, implement, and maintain reliable data models focusing on accuracy, security, and high performance.Identify performance bottlenecks throughout the stack and proactively initiate optimizations.Establish and uphold security standards for authentication, authorization, and data protection.Set engineering quality benchmarks through code reviews, architectural guidance, and mentoring.Create clear technical documentation and decision records to facilitate long-term ownership and knowledge transfer.Stay updated with modern backend, frontend, and infrastructure practices while continuously raising the technical standards of the team.Collaborate closely in an agile environment, contributing to planning, execution, and ongoing improvements.

Join Cross Border Talents as a Senior Software Engineer and be part of an exciting transformation in the banking sector for our client in Lisbon, Portugal.Are you an innovative and passionate Software Engineer eager to make a significant impact? This is your chance! Join our dynamic team and help shape the future of banking in Lisbon, Portugal! In your role as a Senior Software Engineer, you will: Create robust, scalable solutions that propel our projects forward. Engage in close collaboration with product owners, business analysts, quality assurance teams, and fellow engineers. Seamlessly integrate UI components with APIs and databases to ensure a stellar user experience. Contribute to agile ceremonies promoting teamwork and continuous improvement. Partner with technology leads to design maintainable, resilient systems tailored to our project requirements.

As a dynamic Sales & Account Manager, you will serve as the vital connection between agencies and clients. Your mission is to cultivate strong relationships, comprehend client goals, and collaborate with internal teams to provide exceptional solutions. This role uniquely combines sales development, client relationship management, and strategic insights, presenting an exciting opportunity for individuals who excel in vibrant, people-centric environments.Key Responsibilities Engage clients through calls, emails, video meetings, and LinkedIn in both German and English to facilitate meaningful conversations. Lead outreach initiatives to identify potential clients, generate leads, and foster long-term business relationships. Establish yourself as a trusted advisor for clients, ensuring their needs are addressed and expectations are surpassed. Enhance and broaden client partnerships, becoming an indispensable ally in their business journey.

Veeva Systems is a purpose-driven leader in the industry cloud sector, dedicated to accelerating the delivery of therapies to patients. As one of the fastest-growing SaaS companies ever, we achieved over $3 billion in revenue last year and are poised for even greater growth. Our core values, which include Doing the Right Thing, Customer Success, Employee Success, and Speed, define our culture. In 2021, we made a significant milestone by becoming a Public Benefit Corporation (PBC), ensuring we balance the interests of all stakeholders: customers, employees, society, and investors. As a Work Anywhere organization, we embrace flexible work arrangements, allowing you to work from home or in the office, creating an environment where you can excel. Join us as we revolutionize the life sciences sector, with a commitment to positively impacting our customers, employees, and communities.The Role Are you enthusiastic about creating impactful products in a pioneering environment? We are on a mission to develop a data stewardship platform that enhances OpenData's data curation workflows, enabling Product Managers and over 1,000 data stewards globally to collaborate efficiently and achieve their data quality and coverage objectives. As a Full Stack Product Developer, you will work closely with a talented team of engineers to design and implement features from ideation to deployment. You will thrive in an agile environment, making a direct impact on users within a rapidly expanding, market-leading life sciences company.

Renesa Electronics is seeking a Senior QA Engineer in Lisbon to help uphold quality across both backend and full-stack systems. The role centers on supporting a broad technology stack and ensuring reliable, well-tested products. Key responsibilities Collaborate with cross-functional teams to shape and execute effective test strategies. Create and maintain automated test scripts for backend and full-stack components. Carry out comprehensive testing to support and enhance the product suite. Who will succeed This position fits someone who enjoys tackling complex problems and working with colleagues from different backgrounds. Adaptability and a willingness to take on new challenges are important as the team continues to grow.

About Relay Commerce Relay Commerce is a leading e-commerce enablement platform providing innovative scaling solutions tailored for personalized messaging, social commerce, and customer retention strategies. We empower merchants to thrive in an ever-changing digital marketplace with our cutting-edge suite of tools. Currently, our solutions facilitate over $1 billion in incremental gross merchandise volume for more than 35,000 merchants worldwide. Our ecosystem features eight advanced software products designed to enhance merchant revenue growth through email marketing automation, conversion optimization, user-generated content management, retention analytics, and subscription management. Relay's products are recognized as essential revenue-generating tools for forward-thinking e-commerce merchants across the globe. Role Overview In this pivotal role as a Full-stack Software Engineer, you will primarily focus on back-end development (approximately 70% of your time) by creating robust TypeScript services that drive subscription management, billing workflows, and merchant-facing APIs for Shopify stores handling millions of transactions. You will work collaboratively within a team, independently delivering features while collaborating with a seasoned team lead to propose solutions, implement them, and oversee their operation in production. It is crucial that these systems maintain high reliability, observability, maintainability, and performance. Utilization of AI tools such as Claude code and Codex will enable you to accelerate feature delivery effectively. Additionally, you will contribute to our React-based front-ends (approximately 30%) in a dynamic, multi-functional team environment. About Smartrr Smartrr, a subsidiary of Relay Commerce, is a frontrunner in subscription solutions tailored for e-commerce brands. Our platform empowers numerous Shopify merchants to effortlessly launch, manage, and scale their subscription and loyalty programs. Smartrr has facilitated over $300 million in transaction volume, significantly strengthening customer relationships and brand profitability.

Welcome to Kaizen Gaming!As a leading force behind Betano, Kaizen Gaming stands as one of the world's largest GameTech companies, proudly serving 19 diverse markets. Our mission revolves around harnessing state-of-the-art technology to deliver unparalleled experiences to millions of customers who choose us for their gaming entertainment.We are a vibrant community of over 2,700 passionate Kaizeners from more than 40 nationalities, spread across three continents. Recognized as one of the Best Workplaces in Europe and certified as a Great Place to Work, we assure you that no two days will be alike in our dynamic environment. Are you ready to Press Play on your potential?About the RoleAt Kaizen, we are dedicated to utilizing the power of modern AI algorithms to enhance our products and business strategies continuously. Our AI department, comprising product, platform, and research teams, is central to this goal. From detecting fraudulent activities to providing personalized gaming recommendations and optimizing CRM systems, we develop innovative AI solutions.Our teams are built on the principles of self-drive, autonomy, and cross-functionality. In this collaborative environment, you'll engage with Data Scientists, Machine Learning Engineers, Data Engineers, Data Analysts, Product Owners, and Agile Delivery Leads.As a Machine Learning Engineer, your primary focus will be on architecting and delivering robust, scalable Machine Learning pipelines while ensuring the seamless operationalization of Machine Learning models.Your Responsibilities:Design, develop, and maintain scalable model training and inference pipelines in a distributed production environment.Create, deploy, and manage microservices in Python that host and serve ML models in production.Develop and maintain internal tools that facilitate CI/CD/CT, efficient feature engineering, experiment tracking, and data/model versioning.