Full Stack Java Developer

Why Join CoverGo?Fully Remote Work EnvironmentDiverse International TeamInnovate with Cutting-Edge Technology in the Insurtech SectorAbout CoverGoCoverGo is on a mission to revolutionize the insurance industry by making insurance 100% digital and accessible to all. We are a premier global no-code insurance platform serving health, life, and property & casualty sectors.Recognized as Insurtech of the Year across Asia and recipient of numerous global accolades.Trusted by major enterprise clients including AXA, Bupa, MSIG, Dai-ichi, and Bank of China Group Insurance.Our vibrant team of over 120 professionals represents 30 nationalities, all working remotely from various parts of the world.Fully funded by esteemed venture capitalists and strategic institutional investors, enabling us to expand across Asia, EMEA, and the Americas.We have achieved a remarkable 30x growth in annualized revenue since January 2021.We prioritize fostering an inclusive workplace culture that embraces diverse thoughts and perspectives to enhance our work environment.Role OverviewAs the Lead Full Stack Engineer at CoverGo, you will be pivotal in shaping the technical direction and execution of our enterprise-grade insurance platform. This role encompasses hands-on full-stack development while also leading a talented team of engineers, mentoring peers, and spearheading the integration of AI technologies to advance our insurance solutions.You will guide architectural decisions, set development standards, and promote innovation throughout the platform, emphasizing scalable software design and continuous delivery. Your leadership will align technology initiatives with business objectives, creating impactful and intelligent solutions.Your ResponsibilitiesOversee the complete development lifecycle of our SaaS platform, from design and implementation to deployment and maintenance, ensuring alignment with both business goals and technical specifications.Provide technical guidance and mentorship to Full Stack Engineers, nurturing their growth through coaching and knowledge sharing.Define and implement the technical strategy for AI integration, collaborating closely with product and data teams to deliver AI-enhanced features that enhance automation and user experience.Research and assess new AI models, frameworks, and APIs such as OpenAI, Hugging Face, and Google AI, while managing the development of AI proof-of-concept projects to validate innovative concepts.Work closely with product managers, designers, and other stakeholders to deliver high-quality solutions.

Join Pixelmatters, a leading digital product studio. Our talented team of strategists, designers, and engineers is committed to crafting exceptional digital experiences.Our mission is to empower businesses to reach their full potential by delivering high-quality digital products while nurturing meaningful relationships. We aspire to create a world where outstanding user experiences become the standard, inspiring both businesses and individuals to excel.We are seeking a meticulous, adaptive Senior Full-Stack Engineer to join our dynamic team. You will play a crucial role in designing and delivering scalable, high-performance digital products across the entire stack. Your deep technical expertise and strong sense of ownership will contribute to building reliable solutions and upholding high engineering standards.In this role, you will focus on designing, implementing, and evolving full-stack architectures utilizing NestJS and React, deployed on AWS. You will engage in technical discussions to ensure the solutions we create are secure, scalable, and maintainable. Your involvement will span all phases of product development, from front-end implementation and API design to database modeling, infrastructure, and deployment workflows. While your primary focus will be on back-end development, your contributions across the full stack will be essential for delivering the product end-to-end.Your daily tasks will include designing scalable front-end and back-end architectures, developing and optimizing APIs, implementing complex UI components, defining database schemas, enhancing CI/CD pipelines, reviewing code, and proactively identifying performance, reliability, and security enhancements across the system.

Who We AreAt 7Graus, we create solutions that make a difference. Our mission is clear: to enhance people's lives through solutions that help them achieve their goals.Our unique strength lies in our analytical skills and our ability to anticipate users' needs. With over 60 web products, SaaS, and apps, we deliver content to more than 200 million visitors each month. We are one of the largest content producers in Portugal and Latin America.Our CultureAt 7Graus, we embrace a horizontal organization and a culture of responsibility and ownership. We continuously explore and experiment with new ways of working, always keeping in mind that our ultimate goal is not just the structure or tool we apply, but our mission and the definition of a healthy culture. This culture empowers us to create an organizational system capable of self-regulation and adaptation to the evolving world.We strive to be an organization of passionate individuals who love what they do, free from toxicity or politics, where everyone has the opportunity to play a significant role and feels happy to be part of the team.

7Graus develops digital solutions aimed at helping people reach their goals. The team manages more than 60 web products, SaaS platforms, and apps, serving content to over 200 million visitors each month. As one of the largest content creators in Portugal and Latin America, the company focuses on anticipating user needs through strong analytical skills. The organization values a flat structure, encouraging responsibility and ownership at every level. Team members experiment with new ways of working, always prioritizing a healthy and adaptable workplace culture. This approach supports self-regulation and allows the company to adjust to changes in the world. Work environment Flat organizational structure Emphasis on responsibility and ownership Open to new ideas and experimentation Focus on a supportive, non-toxic team dynamic What to expect Collaboration with passionate colleagues Opportunities to contribute meaningfully A culture that values happiness and engagement

About AbtraceAbtrace is an innovative health technology company headquartered in London, with a significant presence in Portugal. Our diverse team comprises doctors, researchers, software developers, and data scientists, dedicated to integrating software engineering and machine learning with medical expertise. Our mission is to develop advanced clinical algorithms that empower primary care clinicians.We are committed to creating digital health solutions that offer personalized Population Health interventions for patients. Our technology continuously analyzes comprehensive health records to identify deterioration signals, early disease onset, and opportunities for preventative measures.Currently, we collaborate with over 500 primary care practices across the UK, impacting the health of approximately 4.5 million patients. Job OpportunityWe are seeking a talented Mid to Senior Full Stack Developer to join our dynamic team. The ideal candidate thrives in a fast-paced environment and possesses excellent communication skills to engage effectively with both technical and non-technical team members. You will be instrumental in designing, implementing, and testing data-driven products and healthcare research projects.We invite individuals who are passionate about shaping the future of healthcare and eager to make a significant impact on the lives of many patients to apply. Key ResponsibilitiesDevelop and test our core products and frameworksCollaborate within a close-knit, diverse team of developers, data scientists, and healthcare professionalsQualificationsProficiency in full stack development technologies, including React, JavaScript/TypeScript, Node.js, and PythonExperience in building, testing, and deploying applications on cloud platforms, preferably AWSFamiliarity with AWS cloud infrastructure managementKnowledge of data pipelines and SQL/NoSQL databasesExperience working with healthcare data and APIsBenefitsCompetitive salary based on experienceGenerous maternity/paternity leaveFlexible working hours and remote work possibilitiesCollaborative and high-performing multi-disciplinary teamOpportunity to engage with cutting-edge technology that enhances patient health

Join our innovative team at Devoteam as an AI Engineer specializing in Distributed Cloud Solutions. We are looking for a passionate individual who thrives in a dynamic environment and is eager to contribute to cutting-edge AI technologies. As a key member of our Data department, you will work collaboratively to develop and implement AI-driven solutions that enhance our cloud offerings.

Join Pixelmatters, a premier digital product studio. We are a collaborative team of strategists, designers, and engineers dedicated to crafting exceptional digital products.Our mission is to empower businesses by delivering high-quality digital solutions while nurturing meaningful relationships. We envision a future where outstanding user experiences are commonplace, inspiring both businesses and individuals to reach their fullest potential.We want you—a detail-oriented, inquisitive, and flexible Senior Staff Engineer—to architect and oversee the development of scalable, high-performance digital products across the entire technology stack. Your blend of profound technical knowledge and strong leadership will position you as a key technical resource across various teams, driving engineering excellence throughout our projects.Your responsibilities will center on designing and refining robust full-stack architectures utilizing NestJS and React, deployed on AWS infrastructure. You will be instrumental in shaping technical decisions, leading architectural discussions, and ensuring that our solutions are secure, scalable, and maintainable. Additionally, you will assist teams in overcoming complex technical challenges and establishing best practices within the engineering organization. Your involvement will span all phases of product development, from front-end architecture and API design to database modeling, infrastructure, and deployment workflows. While you will remain hands-on as necessary, your role will also emphasize providing technical guidance, mentoring fellow engineers, and ensuring long-term architectural integrity across projects.Daily tasks will include contributing to system architecture decisions, reviewing intricate technical implementations, guiding teams in designing scalable front-end and back-end solutions, enhancing CI/CD pipelines and infrastructure practices, mentoring engineers, and proactively identifying opportunities to boost performance, reliability, and security across our platform.

Join our dynamic team at inetum2 as a Full Stack Java Developer! In this role, you will leverage your expertise in Java development to create robust applications that enhance user experiences. You will have the opportunity to work with modern frameworks and tools in a collaborative environment, contributing to exciting projects that shape the future of our solutions.

Join inetum2 as a Full Stack Java Developer and be part of an innovative team that drives technology solutions. Your expertise in Java, HTML, CSS, and JavaScript will be pivotal in developing robust applications. You will collaborate with cross-functional teams to deliver high-quality software that meets user needs.

Please submit your CV in English and indicate your English proficiency level. Mindrift matches experienced professionals with project-based AI assignments for leading technology companies. This Freelance AI Evaluation Engineer position is remote, based in Porto (Portugal), and offered on a project basis rather than as a permanent job. Role overview This role focuses on building a dataset to evaluate AI coding agents using real-world developer tasks. The main goal is to design tasks and evaluation standards that reflect actual software development work. What you will do Create simulated companies from high-level plans, including codebases, infrastructure, and realistic context such as documentation, tickets, and conversations to mimic real development histories. Develop and refine tasks for different phases of these virtual companies: draft prompts, set evaluation standards, and confirm that tasks are both achievable and fairly assessed. Design assignments inside isolated environments that resemble a developer’s workstation, including a Linux setup with development tools, MCP servers (for repositories, task tracking, messaging, and documentation), and a functioning web application codebase. Write tests that accept all valid solutions while rejecting incorrect ones, making sure tests are neither overly strict nor too lenient. Collaborate with an AI agent to check that tests catch real problems, avoid missing errors, and do not penalize correct submissions. Review code generated by AI agents, analyze the causes of their successes or failures, and create edge cases or challenging examples. Revise your work based on feedback from expert QA reviewers who evaluate your output against quality standards. What this role does not include Data labeling Prompt engineering Writing code from scratch (the AI agent handles most coding; your focus is on guidance and evaluation) Direct collaboration with AI models is a key part of this work, since developing challenging tasks for advanced systems means working closely with those same models.

At inovabusiness, we are a consultancy firm with over 25 years of experience in the market. We specialize in supporting organizations' growth through innovation, international cooperation, digital transformation, and access to financing. With offices in four countries and a team of more than 100 professionals, we have earned a reputation for excellence in a highly competitive market. We believe that our approach translates into efficiency, productivity, knowledge, and value for our clients and partners.We are seeking top talent to join our team: professionals who want to contribute positively and proactively. Based on this principle, we are recruiting a new Full-Stack Developer in Matosinhos.Key Responsibilities:Ensure integration between databases, internal systems, and AI components;Automate information flows and operational processes;Support the operationalization of AI agents in practical contexts;Ensure reliability, scalability, and security of technical solutions;Collaborate on continuous improvement of processes and internal user experience.

Join inetum2 as a Full Stack Java Developer where you will be at the forefront of innovative software solutions. You will work collaboratively in a dynamic team environment, developing and maintaining high-quality applications using Java technologies. Your role will involve both front-end and back-end development, ensuring seamless integration and performance optimization.

toloka-ai seeks Freelance AI Workflow Engineers to help advance the Tendem project. This part-time, remote role focuses on building automation systems that blend large language models (LLMs) with human input. Work supports the development of intelligent workflows for content generation, communication, and process automation. Key responsibilities Design and improve workflows that use LLM APIs for generating content, automating tasks, and facilitating communication Collaborate with Tendem Agents who manage repetitive tasks, ensuring effective cooperation between AI systems and human contributors Apply structured thinking, prompt engineering, and quality assurance to deliver scalable, reliable AI-powered solutions Requirements Hands-on experience integrating LLMs and designing prompts Background in developing or refining AI-driven automation systems Ability to work independently as a remote freelancer Project context The Mindrift platform connects subject matter experts with AI projects from leading technology companies. Tendem aims to unlock Generative AI’s potential by combining global expertise with advanced tools. Location Remote , Porto, Porto District, Portugal

Join our dynamic team as a Full-Stack Developer (specializing in .NET and Angular) within our Corporate & Investment Banking (CIB) division. This is a local contract position based in Porto, where you will play a crucial role in enhancing our banking solutions.Key Responsibilities:Design and implement innovative solutions using Angular, .NET 8, and SQL Server.Develop and maintain high-quality, reusable, and efficient code.Optimize applications for maximum performance, quality, and responsiveness.Diagnose and resolve bottlenecks and bugs, implementing effective solutions.Contribute to maintaining code quality and organization.Technical Skills Required:Proficiency in .NET (Core 3.1+, 8) and C# for backend development.Expertise in Angular 13+ for frontend development.Strong knowledge of relational databases.Familiarity with SOLID principles and Entity Framework/EF Core.Experience in Agile methodologies and a craftsmanship mindset.Desirable Skills:Experience with Design Patterns, particularly DDD and Event Sourcing.Familiarity with Checkmarx for security tracking.Comfortable with DevOps processes.Experience with non-relational databases (e.g., MongoDB).Knowledge of design patterns.Other Requirements:Fluent in both Portuguese and English (minimum B2 level).Self-motivated with a curious outlook, capable of working independently.A team player with excellent organizational skills.Eager to learn and adapt in a fast-paced environment.Strong problem-solving, analytical, and communication skills.Able to collaborate effectively in a multicultural setting.

Join our dynamic team at inetum2 as a Multi-Stack Data Engineer! In this role, you'll be at the forefront of data engineering, working with various technologies to design, develop, and maintain scalable data pipelines. You will collaborate closely with data scientists and analysts to support our data-driven decision-making processes.Key responsibilities include:Designing robust data architectures.Implementing ETL processes and managing data workflows.Optimizing database performance and ensuring data quality.Collaborating with cross-functional teams to meet project goals.

Please submit your CV in English and indicate your English proficiency level. Mindrift connects skilled professionals with project-based AI work for leading technology companies. Projects focus on testing, evaluating, and improving AI systems. This is a contract-based, non-permanent role. Role overview This freelance position combines electrical engineering expertise with Python programming for AI training projects. Work is remote, based in Porto, Porto District, Portugal. Contributors handle a variety of engineering and programming assignments, with each project bringing its own requirements. Key responsibilities Design engineering challenges that mirror real-world workflows Create Python programming tasks for calculations and simulations Develop computationally intensive problems using numerical methods or iterative techniques Build challenges involving system design, optimization, and analysis Use authentic research problems or practical scenarios as the basis for tasks Validate solutions with Python and common engineering libraries Document problem statements clearly and provide verified solutions Requirements Degree in Electrical Engineering or a closely related field Proficiency in Python for numerical validation; familiarity with tools such as MATLAB, R, C, SQL, Numpy, Pandas, or SciPy Minimum 2 years of professional experience, including applied research or teaching Understanding of real-world engineering constraints and approximations Strong written English skills (C1 level or higher) Professional certifications (such as CMME, SAS Certifications, CAP) and experience with international or applied projects are a plus Project workflow Application Qualification Project engagement Task completion Compensation Time commitment During active project phases, expect to spend about 10–20 hours per week. Actual workload depends on project needs and is not guaranteed outside these periods. Compensation Earn up to $31 per hour, depending on expertise and task completion rate. Actual pay may vary by project based on scope, complexity, and required skills.

Join our team as a React Developer at Devoteam, where you will leverage your expertise to create innovative web applications. You will work collaboratively in a dynamic environment, contributing to exciting projects that shape the future of technology.

Please submit your CV in English and indicate your English proficiency level. Mindrift connects skilled professionals with project-based AI work for leading technology companies. Projects focus on testing, evaluating, and improving AI systems. All participation is freelance and project-based, not permanent employment. Role overview This freelance Optical Engineer role centers on using Python to help train and refine AI systems. The work is remote, with preference for candidates based in Porto, Portugal, or nearby areas. What you will do Design computational physics problems that reflect real research workflows. Create problem sets requiring Python programming solutions, using libraries such as Numpy, SciPy, and Sympy. Ensure problems are computationally intensive and not solvable manually in a reasonable timeframe. Develop scenarios involving complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics. Draw on real research challenges or practical physics applications for inspiration. Validate solutions in Python, using established physics simulation libraries. Document each problem clearly and provide verified, correct answers. Requirements Degree in Physics (theoretical, experimental, or computational) or a related field. Proficiency in Python for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or similar languages is also acceptable. At least 2 years of professional experience in applied research or teaching. Experience with numerical simulation methods. Ability to design problems that mirror authentic physics research workflows. Creative approach to problem design across multiple physics domains. Knowledge of physics modeling and approximation techniques. Strong written English skills at C1 level or above. Project workflow Apply Pass qualifications Join a project Complete assigned tasks Receive compensation Time commitment Tasks typically require about 10–20 hours per week during active project phases. Workload may vary depending on project needs and is not guaranteed outside of active phases. Compensation Earnings can reach up to $29 per hour, depending on expertise and contribution speed. Actual rates may differ by project, based on scope, complexity, and required skills. Other projects may offer different rates according to their specific requirements.

At Sword Health, we are redefining the future of healthcare by transitioning from a human-first model to an innovative AI-first approach through our cutting-edge AI Care platform. Our mission is to democratize access to exceptional healthcare services, available at any time and from anywhere, while significantly lowering costs for payers, self-insured employers, national health systems, and various healthcare organizations. Initially focused on revolutionizing pain management, we have successfully expanded our offerings to include women's health, movement health, and more recently, mental health. Since 2020, over 700,000 members across three continents have engaged in 10 million AI sessions, enabling our 1,000+ enterprise clients to save over $1 billion in unnecessary healthcare expenditures. With 42 clinical studies backing our methods and more than 44 patents secured, Sword Health has garnered over $500 million in funding from prominent investors such as Khosla Ventures, General Catalyst, Transformation Capital, and Founders Fund. Discover more at www.swordhealth.com.As a member of our Applied AI Team, you will spearhead the development of AI and machine learning solutions that deliver personalized clinical care on a large scale. Your contributions will encompass the entire AI treatment management spectrum, from initial assessments to intervention selection and progress tracking across diverse therapeutic areas. We're also building Phoenix, our AI Care Specialist designed to maintain ongoing dialogues with patients, providing essential clinical guidance throughout their recovery journey.This role encompasses the complete AI stack: prompt engineering, RAG implementations, model fine-tuning, and agent-based workflows. We utilize both generative AI and traditional machine learning methodologies tailored to the demands of specific challenges. All our projects are aimed at enhancing digital care quality and accessibility to unprecedented levels.