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Join Altersolutions as a Node.js Developer and be part of an innovative team that values creativity and technical excellence. In this role, you will be responsible for designing and implementing scalable applications using Node.js while collaborating with cross-functional teams to deliver high-quality software solutions.
Altersolutions is a forward-thinking technology company based in Lisboa, dedicated to delivering cutting-edge digital solutions. Our team comprises passionate professionals who strive to push the boundaries of innovation and technology. We foster a collaborative environment where creativity and technical expertise thrive.
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Search for Senior Backend Developer - Node.js
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Jobgether
Role overview Jobgether is searching for a Senior Backend Developer with strong Node.js skills to join a partner company in Portugal. This is a fully remote position focused on building backend services that are secure, scalable, and reliable to support the platform’s core functions. What you will do Shape and refine backend architecture with Node.js Enhance…
Join Our Team as a Backend Developer!Location: Fully Remote (CET hours preferred)Compensation: €4,450 - €5,800 + stock optionsLanguage: Collaborate within a Russian-speaking teamAbout Fundraise UpFundraise Up is a pioneering global platform transforming the fundraising landscape for nonprofits. Our technology facilitates millions of dollars in donations monthly, empowering organizations to achieve their mission with innovations that enhance performance: rapid load times, increased conversion rates, and accessibility-first design.We are trusted by renowned nonprofits like UNICEF and the Alzheimer’s Association, achieving a stellar 4.9/5 rating across top software review platforms, recognized for both our impact and product excellence.A Truly Global ProductWe cater to the enterprise sector, supporting nonprofits across North America, the U.K., Australia, and Europe.Our sophisticated product ecosystem includes a modern checkout experience, customizable widgets, donor and organization portals, admin tools, and various internal applications, all powered by a robust backend.Our backend architecture leverages Node.js (Koa, NestJS) and MongoDB, while our frontend stack includes Webpack, Vue.js, and React, predominantly written in TypeScript. We utilize Kafka for high-throughput messaging and background processing alongside Bull (Redis), with analytics stored in ClickHouse and Elasticsearch enhancing our search capabilities.The TeamJoin a diverse team of over 160 product professionals, including 80+ engineers, primarily located in Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus. Our developers boast 5-10 years of experience and are committed to a culture of technical curiosity and knowledge sharing.Despite our size, we maintain a collaborative atmosphere where each task matters and every opinion is valued. We prioritize thoughtful teamwork, strong engineering practices, and a product-oriented mindset. Our biweekly engineering forums foster learning and celebrate accomplishments, ensuring you join a team where quality, mentorship, and respect are paramount.Your RoleAs a Backend Developer, you will play a pivotal role in architecting the engine that drives our global platform. You will tackle complex challenges within a high-load, distributed system, building and scaling the infrastructure that enables millions in donations. This is not a maintenance role; it’s about innovation and growth.
Jobgether is looking for a Senior Node.js Backend Developer to join its team in Portugal. This position focuses on building secure and scalable backend systems that power digital finance services worldwide. The work is remote-first, with collaboration across multiple regions. Role overview Design and implement backend infrastructure using Node.js Develop mission-critical services and APIs for financial products used globally Prioritize security, scalability, and reliability in every solution Work closely with engineers from different locations Contribute to distributed systems and seek ways to improve performance Stay current with new technologies and apply them as needed Requirements Professional experience in Node.js backend development Solid background in backend architecture and distributed systems Comfortable tackling complex technical challenges Appreciates autonomy, takes ownership, and brings innovative ideas Works well in a remote-first setting Location This remote-first role is based in Portugal.
Altersolutions
Join Altersolutions as a Node.js Developer and be part of an innovative team that values creativity and technical excellence. In this role, you will be responsible for designing and implementing scalable applications using Node.js while collaborating with cross-functional teams to deliver high-quality software solutions.
Cross Border Talents
We are seeking a talented Senior Full-stack Developer proficient in React.js and Node.js to join our dynamic team at Cross Border Talents in Lisbon. The ideal candidate will have a robust understanding of both front-end and back-end technologies.Key Responsibilities:Collaborate with project teams to determine technology stacks based on client needs.Contribute to the development of high-quality web applications.Mentor junior developers and assist in code reviews.Essential Qualifications:Fluency in English and reside within a reasonable commuting distance of our office.A minimum of 3 years' experience in software development with a focus on modern programming languages.Strong knowledge of both front-end and back-end technologies, including React.js, Node.js, and other frameworks.Proficiency in DevOps tools such as Kubernetes, Docker, AWS, and GCP.Desirable Attributes:Passion for technology and involvement in hobby projects.Prior experience in consulting is a plus.A keen understanding of Agile methodologies and team collaboration.
About UsFlosum is a self-sustaining, profitable B2B SaaS company that delivers a premier Salesforce-native DevSecOps, Data Protection, and Security platform. Our solutions are relied upon by Fortune 500 companies across the most regulated sectors, including financial services, healthcare, government, and insurance.Unlike typical startups that burn cash and chase superficial metrics, we have achieved profitability on our own terms. As a proud Salesforce Summit Partner and recipient of the Innovation Award, we have established our presence in the competitive enterprise software landscape.Our platform is built entirely on Salesforce, catering to enterprises that demand uncompromising security, compliance, and reliability.Role OverviewWe are embarking on an ambitious growth trajectory, enhancing our product offerings, expanding platform functionalities, and accelerating our delivery speed. We seek experienced Node.js developers who can take ownership of critical aspects of our architecture and deliver production-level code relied upon by our enterprise customers daily.This position is not about augmenting staff; you will collaborate directly with engineering leaders, product managers, and the CEO. Your decisions will have significant impacts, your insights will be valued, and your craftsmanship will be evident to our customers.What You'll CreateHigh-performance backend services and APIs that drive enterprise SaaS applications.Scalable and secure Node.js microservices and integrations within the Salesforce ecosystem.Modern front-end experiences utilizing Vue.js and TypeScript tailored for demanding enterprise users.CI/CD pipeline tools, automation frameworks, and infrastructure to boost developer productivity.Real-time data processing and event-driven architectures managing sensitive enterprise data at scale.
Join our dynamic team at bunch as a Senior Backend Engineer! In this pivotal role, you will develop robust backend systems that power our innovative solutions. Collaborate with cross-functional teams to enhance our infrastructure and solve complex problems. Bring your expertise in server-side programming and your passion for technology to our exciting projects!
Role Overview inetum2 is looking for a Senior Backend Developer (Database Administrator) to join the team in Lisbon. This position focuses on designing, implementing, and maintaining database systems that support reliable and efficient operations. What You Will Do Design and implement database architectures to support backend systems Maintain and optimize databases to ensure strong performance and data integrity Work closely with cross-functional teams to support new features and solutions Location Lisbon
Join ciandt, where we are experts in tech transformation, merging human skills with cutting-edge AI to deliver scalable technology solutions.With a vibrant team of over 8,000 CI&Ters globally, we have forged partnerships with more than 1,000 clients over our 30-year journey. Embrace the reality of Artificial Intelligence with us!We seek a dedicated and talented Senior Backend Developer to enhance our global CI&T team. You will have the opportunity to design and implement robust backend services and APIs that empower innovative digital solutions for our international clientele. Collaborate closely with teams across Brazil, Europe, and North America in a dynamic Agile setting.Key Responsibilities:● Develop, test, and maintain scalable backend services employing modern technology stacks.● Create APIs and facilitate integrations.● Collaborate with frontend, DevOps, and product teams to deliver comprehensive features.● Implement and uphold unit, integration, and end-to-end tests using suitable testing frameworks.● Engage in architecture discussions and advocate for clean coding practices, performance optimization, and security protocols.● Contribute to CI/CD automation, monitoring, logging, and infrastructure development.● Document technical solutions and promote knowledge sharing within the team.● Participate in Agile team ceremonies (stand-ups, reviews, retrospectives).Qualifications:● Extensive experience in Java & Springboot.● Strong familiarity with cloud services (AWS or Azure) and serverless architectures.● Understanding of CI/CD tools and DevOps pipelines (e.g., GitHub Actions, Jenkins).● Proficient in relational and NoSQL databases (PostgreSQL, MongoDB, DynamoDB).● Knowledgeable in microservices architecture and API design principles.● Hands-on experience with containerization (Docker) and orchestration tools (Kubernetes, OpenShift).● Experienced in unit and integration testing with frameworks like Jest, JUnit, Mocha, or similar.● Proficient in version control workflows (e.g., Git).
At Mindera, we are dedicated to assembling an exceptional team, and we invite you to be a part of it. We are in search of skilled Kotlin/Java Backend Developers who have a genuine enthusiasm for tackling intricate challenges. Within our Agile and collaborative setting, you will take charge of the technical components of development, creating high-quality software systems. Leveraging your proficiency in Kotlin or Java (if you are keen to work with Kotlin), you will design and implement resilient and scalable backend solutions. Your contributions will span the entire software development lifecycle, encompassing requirements gathering, design, coding, testing, and deployment. We prioritize collaboration, knowledge sharing, and continuous learning at Mindera. You will have the chance to collaborate with talented individuals, mentor junior developers, and play a crucial role in the team's growth and success. If you flourish in a fast-paced, innovative environment and have a passion for working with cutting-edge technologies, Mindera is the ideal place for you.
At Mindera, we are on a mission to build exceptional software solutions and are actively seeking a talented Senior Backend Developer with expertise in Java or Kotlin. Join our dynamic and innovative team where collaboration and creativity are at the forefront. You will have the opportunity to tackle complex challenges while developing high-quality backend solutions in an Agile environment.Your role will involve taking ownership of the development process, from the initial requirements gathering to design, coding, testing, and deployment. You will leverage your skills in Kotlin or Java to create robust and scalable systems that push the boundaries of technology.We prioritize a culture of knowledge sharing and continuous learning, providing you with the chance to mentor junior developers and contribute significantly to our team's success. If you thrive in a fast-paced, cutting-edge environment and are passionate about technology, Mindera is the ideal place for you.
About UsAt Action1, we are revolutionizing endpoint management with our cutting-edge, autonomous platform that empowers numerous Fortune 500 companies. Our cloud-native solution is designed for infinite scalability, exceptional security, and is configurable in just 5 minutes—providing a seamless experience that remains free for the first 200 endpoints, with no functional limitations. By leading the charge in autonomous OS and third-party patching, featuring peer-to-peer patch distribution and real-time vulnerability assessments without the need for a VPN, we eliminate routine tasks, mitigate ransomware threats, and enhance the digital employee experience.In 2025, Action1 earned recognition from Inc. 5000 as the fastest-growing private software company in America. Our founders, Alex Vovk and Mike Walters, are seasoned American entrepreneurs, previously at the helm of Netwrix, a multi-billion-dollar cybersecurity firm.Your RoleDevelop robust APIs and backend solutions for a high-load product encompassing numerous endpoints.Optimize SQL queries to efficiently manage vast data volumes.Enhance code performance to support multiple simultaneous connections.Contribute to global cybersecurity efforts every day!
Role overview Riskified seeks a Senior Backend Engineer in Lisbon to help build and maintain the backend systems that power its fraud prevention platform. The position centers on improving efficiency and reliability for clients around the globe. This work supports the technical foundation that enables Riskified’s services to scale and perform. What you will do Design, develop, and maintain backend systems for the core platform Collaborate with cross-functional teams to deliver technical solutions Tackle complex backend challenges to support platform growth and stability Contribute to the adoption and implementation of new technologies Impact Senior Backend Engineers at Riskified influence both product direction and client outcomes. The work directly supports Riskified’s ongoing efforts to lead in fraud prevention and deliver reliable results to customers.
Join our dynamic Platform team as a Senior Python Backend Developer and take charge of the core backend systems that drive Aghanim, a pioneering direct-to-consumer (DTC) platform. Our mission is to empower mobile game developers to effectively monetize their products beyond traditional app stores. As a Merchant of Record, we manage payments, compliance, and tax obligations across over 200 territories while equipping game studios with cutting-edge tools for LiveOps automation, user segmentation, and community interaction.Our platform supports more than 100 live games through customizable Game Hubs (DTC web stores), in-game offers, subscription models, and virtual currency systems — all requiring robust real-money transaction capabilities with a focus on reliability and fraud prevention.You will be working with a sophisticated codebase that adheres to domain-driven design, encompassing over 60 business domains, strict code quality standards, and AI-assisted development processes. Our tech stack includes modern Python frameworks such as FastAPI, SQLAlchemy v2, PostgreSQL, and Redis, facilitating extensive integrations with game backends, payment gateways, and external services.
Tripadvisor, Inc.
Join the Tripadvisor Group, where we connect people with unforgettable experiences and strive to be the world's most trusted source for travel and adventure. Utilizing our vast portfolio of travel brands and advanced technology, we aim to engage a global audience and facilitate meaningful connections with our partners across diverse travel categories including accommodations, restaurants, and unique experiences. The Tripadvisor Experiences Engineering team, distributed across Europe, plays a pivotal role in managing Tripadvisor.com and our mobile applications, alongside the supporting infrastructure. We empower operators to grow their businesses while enabling third parties to leverage our comprehensive inventory. Our dedicated team provides essential tools that support our customer service representatives in delivering exceptional service to travelers and operators worldwide. We are in search of a Senior Software Engineer to become part of our dynamic team. This position is available to candidates who can commute (generally within a 2-hour radius) to one of our office hubs in Lisbon. We appreciate flexibility in work arrangements and value the importance of in-person interactions for collaboration and connection. Expect a remote-first work model complemented by periodic office gatherings for team planning and engagement. At Tripadvisor, our engineers thrive on tackling a diverse array of technical challenges. This backend-focused full-stack role primarily involves backend development, with opportunities to engage in frontend projects as well. While a willingness to learn is essential, expertise in frontend development is not required at the outset, as we offer on-the-job training. Our collaborative environment is designed for productivity, where engineers work closely with product managers and designers throughout the entire software development lifecycle—from design and coding to testing and deployment. Most engineers deploy code to production every few days within our daily release cycle. The technology stack at Tripadvisor includes Java, React, Typescript, GraphQL, Kubernetes, SQL, and NoSQL databases on AWS. While strong proficiency in Java is mandatory, familiarity with the entire stack is not a prerequisite; a passion for learning is what we value most. Why Work with Us? Competitive compensation packages, including base salary, annual bonuses, and more. “Work your way” approach offering flexibility to cater to your lifestyle and needs.
payabl seeks a Senior Python Backend Developer to join its SWAT Team. This remote role is based in Lisbon, Portugal. The team works on backend systems that support client requirements and broader business objectives. Key responsibilities Collaborate with cross-functional groups to design and build backend applications in Python. Create features and tools aimed at improving system performance and reliability. Help optimize and integrate backend infrastructure as part of ongoing projects. Location This is a fully remote position located in Lisbon, Portugal.
Kaizen Gaming
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.
At Action1, we pride ourselves on being an innovative autonomous endpoint management platform, trusted by leading Fortune 500 companies. Our cloud-native solution is infinitely scalable, highly secure, and can be configured in just five minutes, offering a seamless experience that remains free for the first 200 endpoints with no functional limits. By introducing groundbreaking features such as autonomous OS and third-party patching, along with peer-to-peer patch distribution and real-time vulnerability assessments, we effectively eliminate routine labor, mitigate ransomware threats, and enhance the digital employee experience.In 2025, Action1 was honored by Inc. 5000 as the fastest-growing private software company in America. Our founders, Alex Vovk and Mike Walters, are American entrepreneurs with a successful history, having previously founded Netwrix, a multi-billion-dollar cybersecurity enterprise.As we enter an exciting phase of growth, we are on the lookout for a talented Full-Stack Developer to join our exceptional development team and contribute to our ongoing success.Your Responsibilities:Enhance and maintain the frontend components of our product.Design and develop APIs and backend systems for a high-traffic product with numerous endpoints.Create unit and integration tests for both frontend and backend functionalities.Refactor existing code and optimize application performance.Qualifications:Minimum of 3 years of professional software development experience.Strong proficiency in Node.js, JavaScript, TypeScript, and ReactJS.Experience in designing and implementing REST APIs.Proficient in database management (DynamoDB, MySQL).Experience in writing test cases.Solid understanding of AWS services (Lambda, EC2).Willingness to support and maintain legacy PHP code.What We Offer:Fully remote work options, providing you with the flexibility you need.A variety of engaging challenges and opportunities for professional growth.Competitive salary with flexible working hours and potential for advancement.A supportive and professional team dedicated to collaboration and mutual growth.Join Action1 and play a crucial role in our success!
Aghanim is looking for a Senior Golang Backend Developer to help build and refine backend services that power billing and payment processing systems. This position is based in Lisbon. What You’ll Do Design and develop backend services focused on billing and payment flows Work with Go (Golang) as the primary backend language Integrate with a range of external payment providers and financial APIs Build and maintain systems that manage transactions, retries, reconciliation, and provider communications Implement and optimize billing logic and payment processing pipelines Emphasize reliability, accuracy, and observability in all financial operations Write maintainable, well-tested production code Monitor and troubleshoot payment and transaction workflows About the Role Develop scalable backend services using Golang Integrate seamlessly with multiple payment providers Ensure financial operations are reliable and accurate Handle transaction processing, including error handling and reconciliation Location This role is based in Lisbon.
Position OverviewJoin our innovative team at condukt as a Senior Backend Engineer, where you'll play a pivotal role in shaping the design and architecture of our core platform. Collaborating closely with the founding team, you will help us deliver exceptional value to our clients.As part of an early-stage startup, we take pride in our hands-on approach to building solutions from the ground up. You will have the opportunity to frequently ship code, iterate rapidly based on user feedback, and uphold the stringent security, performance, and uptime standards our clients expect.We are passionate about building, scaling, and growing. Our leadership team boasts a proven track record in product development, team scaling, and driving growth. Our talented engineers join us from top tech companies and unicorns.If you are enthusiastic about transforming complex challenges into simple, elegant solutions, this is the perfect role for you. You will have a significant opportunity to influence our engineering culture from the ground up.
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