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Experience Level
Experience
Qualifications
Proficient in programming languages such as Java, Python, or Node.js. Strong understanding of database management and API development. Experience with cloud services (AWS, Azure) is a plus. Exceptional problem-solving skills and attention to detail. Ability to work independently and as part of a team.
About the job
Jobgether seeks a Backend Developer to join its Research Group on a B2B contract in Portugal. This position centers on building and maintaining backend systems that support ongoing research and innovation.
Key responsibilities
Develop and maintain backend infrastructure for research projects
Collaborate with team members to deliver stable and effective solutions
Contribute to technical projects that strengthen the group’s capabilities
Requirements
Proven experience working with backend systems
Strong attention to detail and proactive problem-solving skills
Ability to work well within a collaborative team
Contract details
This is a B2B contract role based in Portugal.
About jobgether
At jobgether, we are dedicated to connecting talented individuals with exciting job opportunities. Our mission is to innovate the recruitment process and create a supportive environment for both employees and employers. Join us in shaping the future of work!
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…
Full-time|Remote|Remote — Porto, Porto District, Portugal
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.
Gapstars, a Netherlands-based leader in software development services, specializes in creating innovative remote teams in Sri Lanka and Portugal. With over 250 TechStars on board, we transform scalable software into high-performance products that are set to shape the future of technology. We partner with ambitious tech companies eager to dominate their markets.We are seeking a Medior Backend Software Developer to join PFM Intelligence, Europe’s foremost independent movement-data platform. PFM processes real-time footfall and occupancy data for over 7,800 locations in the Netherlands, Belgium, Germany, and the UK, and is evolving into a comprehensive Platform-as-a-Service (PaaS) provider. This role is pivotal to that transformation.In this position, you will focus on developing impactful backend integrations that link PFM’s core platforms and automate essential commercial processes. This hands-on role will allow you to take ownership of significant technical components and directly influence the scalability of our platform.You will collaborate closely with a senior engineer, a backend developer, a cloud migration expert, and an ERP application specialist in a fully remote, highly collaborative environment. Our engineers make technical decisions, and you will have the autonomy to design, build, and refine backend services that operate at scale in production.
About Us:TransPerfect is a renowned leader in the realm of translation software, embodying a lively start-up culture. We are on the lookout for an innovative and enthusiastic Backend Developer to enhance our cutting-edge Artificial Intelligence (AI) team. Join us in shaping the future of AI at a global scale. With over a decade of experience, our AI team has become essential to advancing machine translation, generative AI, natural language processing, and automation.We seek a skilled backend developer who is eager to push technological boundaries and make a significant impact in the AI domain. You will collaborate with a diverse team of professionals across the USA, Spain, Portugal, and India. If you are passionate about creating robust and scalable solutions that bring AI to life for users, this opportunity is for you.About The Role:In this position, you will tackle the complexities of document processing, specifically converting intricate, unstructured PDFs into well-formatted, editable .docx files. Your mission is to not only extract text but to faithfully reproduce the visual and structural intent of the original documents, encompassing nested tables, multi-column layouts, font hierarchies, and styling.Your responsibilities will include:Comparative Analysis: Conduct a thorough evaluation of commercial solutions (ABBYY, Adobe, AWS Textract) versus open-source/AI-native tools (Mistral OCR, Docling, Nougat, LlamaParse).Benchmarking: Develop metrics for “format fidelity” to objectively assess how well a tool recreates headers, footers, tables, and styles.Pipeline Development: Create a Python-based workflow that integrates OCR engines with document generation libraries, such as python-docx or Pandoc.
Full-time|Remote|Remote — Lisbon, Lisbon, Portugal
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.
Role overview payabl is hiring a Python Backend Developer to join its SWAT Team. This is a fully remote role available to candidates living in Portugal. What you will do Develop and maintain backend systems that power payabl’s payment products Collaborate with team members across departments to deliver dependable software Diagnose and resolve complex technical problems as they come up Support continuous improvements to the platform’s performance Location This position is remote and open to applicants based in Portugal.
About Us:TransPerfect stands as a premier name in translation technology, blending a dynamic start-up ethos with substantial industry expertise. We are on the lookout for an innovative and enthusiastic Backend Developer to enhance our cutting-edge Artificial Intelligence (AI) division. Within this forward-thinking team, you will have a unique opportunity to influence the trajectory of AI solutions on a global scale. Over the past decade, our AI team has evolved into a pivotal force for innovation, focusing on machine translation, generative AI, natural language processing, and automation.If you are an experienced backend developer eager to explore the frontiers of technology and leave a significant mark in the AI sector, we encourage you to apply. Join our diverse and global team of experts located across the USA, Spain, Portugal, and India. This role is perfect for those passionate about creating robust and scalable AI solutions.About the Role:As a Backend Developer, your main responsibility will be to tackle the final steps of document processing by transforming intricate, unstructured PDFs into well-organized, editable .docx files. Our aim extends beyond mere text extraction; we strive to faithfully recreate the visual and structural intent of the original documents, encompassing nested tables, multi-column layouts, font hierarchies, and styling.You will spearhead the research and development of our document conversion pipeline. This hybrid role requires you to be both a strategic thinker (keeping abreast of existing tools) and a hands-on developer (blending engineering and AI skills).Your key responsibilities will include:Comparative Analysis: Conduct thorough evaluations of commercial solutions (ABBYY, Adobe, AWS Textract) against open-source and AI-native alternatives (Mistral OCR, Docling, Nougat, LlamaParse).Benchmarking: Develop metrics for
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.
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
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.
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).
Full-time|Remote|Remote — Porto, Porto District, Portugal
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.
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!
About Us:TransPerfect, a prominent name in the translation software industry with an energetic start-up culture, is on the lookout for a talented and enthusiastic Backend Developer to join our dynamic Artificial Intelligence (AI) team. Here, you will have the chance to influence the future of AI within a global organization. With over a decade of experience and the development of initial machine translation models, our AI team has become a cornerstone of innovation in machine translation, generative AI, natural language processing, and automation.We are in search of a skilled backend developer eager to explore the limits of technology and create a meaningful impact in the AI domain. You will collaborate with a diverse and global team of experts based in the USA, Spain, Portugal, and India. If you are driven by a passion for building robust and scalable solutions that extend AI capabilities to users, this position is perfect for you.About the Role:In the role of Backend Developer, you will tackle the "last mile" of document processing: transforming complex, unstructured PDFs into well-formatted, editable .docx files. Your mission extends beyond mere text extraction; you will aim to faithfully reproduce the visual and structural intent of the original documents, including nested tables, multi-column layouts, font hierarchies, and styling.This position requires you to spearhead the research and development of our document conversion pipeline, balancing strategic decision-making with hands-on development (leveraging both engineering and AI skills).Your responsibilities will include:Comparative Analysis: Conduct an in-depth evaluation of commercial solutions (ABBYY, Adobe, AWS Textract) against open-source/AI-native options (Mistral OCR, Docling, Nougat, LlamaParse).Benchmarking: Set metrics for "format fidelity" to objectively assess how well various tools replicate headers, footers, tables, and styles.Pipeline Development: Create a Python-based workflow that integrates OCR engines with document generation libraries (such as python-docx or Pandoc).
As we continue to expand, we are eager to connect with exceptional tech professionals and keep an open channel for future opportunities. This is a unique talent pool opportunity in Portugal, allowing us to gather spontaneous applications to create a robust pipeline of skilled individuals for when relevant positions arise.We are actively seeking talented Java Backend Developers who are enthusiastic about joining our Research & Development teams when future opportunities present themselves.Our teams focus on building and maintaining high-performance, low-latency platforms that serve thousands of users globally every day. The backend services we develop manage intricate business processes such as order processing, validation, routing, data reconciliation, and critical performance calculations. We prioritize code quality, reliability, and scalability, achieving these through meticulous design, peer reviews, and rigorous testing. Our engineers thrive in multicultural, distributed teams, collaborating with QAs, frontend developers, business analysts, and product stakeholders in an agile (Scrum/Kanban) environment.Technologies We Work With:Core Java (11+): Collections, Streams, Threads, Concurrency, JVM tuningFrameworks & Tools: Spring, JUnit5, AssertJ, MockitoInfrastructure: Docker, PostgreSQL, Liquibase, SplunkCollaboration & CI/CD: Atlassian suite, Slack, TeamCity, SonarOur Team Culture:We are passionate about coding in Java and exploring how things function at a deeper level (threads, collections, memory, JVM).We leverage strong foundations in computer science to tackle complex problems with efficient solutions.We value the creation of clean, maintainable, and well-tested code.We take ideas from concept to production and celebrate achievements as a team.We foster a collaborative, supportive, and feedback-driven environment across various cultures and time zones.We communicate primarily in English (B2+).
Jobgether seeks a Backend Developer to join its Research Group on a B2B contract in Portugal. This position centers on building and maintaining backend systems that support ongoing research and innovation. Key responsibilities Develop and maintain backend infrastructure for research projects Collaborate with team members to deliver stable and effective solutions Contribute to technical projects that strengthen the group’s capabilities Requirements Proven experience working with backend systems Strong attention to detail and proactive problem-solving skills Ability to work well within a collaborative team Contract details This is a B2B contract role based in Portugal.
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.
About UsAt Fortis Games, we are committed to creating exceptional gaming experiences that unite players and redefine the gaming industry. Our mission is to foster a strong sense of community through our games and the way we collaborate and treat one another. We believe in the power of diversity, equity, and belonging, and we strive to combine our unique skills and backgrounds to create unforgettable gaming experiences.As a burgeoning organization led by experienced veterans of the gaming sector, we offer numerous opportunities to influence our products and shape the future of the company. If you're enthusiastic about addressing challenging problems with clear communication and a focus on teamwork, you might just find your place with us.Role OverviewAs a Staff Backend Engineer at Fortis, you will play a crucial role in developing an exciting Original IP, guiding it through all phases of development from initial concept to successful launch. Collaborating with talented game designers, artists, and engineers, you will design, implement, and deploy a large-scale multiplayer experience, leaving a lasting impact on the game for years to come.Your ResponsibilitiesCreate game features from prototype to live operations, maintaining quality and stability throughout the lifecycle.Design and implement robust CI/CD pipelines to enhance development and deployment efficiency.Analyze backend systems to diagnose and solve complex bugs and performance challenges.Conduct backend load testing to ensure infrastructure can accommodate peak player activity.Collaborate with client-side engineers to develop secure and server-authoritative gameplay systems.Establish and manage DevOps workflows in a cloud environment, primarily utilizing AWS services.Produce clear and organized technical documentation to convey design decisions and architecture across the team.Contribute to the establishment of studio-wide engineering standards by adhering to and shaping development guidelines and code quality practices.
Join Our Team at Kaizen GamingKaizen Gaming, the driving force behind Betano, stands as one of the largest GameTech companies globally, actively engaging in 19 markets. Our commitment to harnessing advanced technology allows us to deliver exceptional experiences to millions of customers who rely on us for their entertainment.With a vibrant team of over 2,700 Kaizeners from more than 40 nationalities across three continents, we take pride in our diversity and innovation. Recognized as one of the Best Workplaces in Europe, and certified as a Great Place to Work, our environment promises excitement and growth every day. Are you ready to Press Play on your potential?About the RoleDesign, develop, and maintain high-quality, efficient, and reusable code.Create interfaces that connect components of diverse subsystems within a high-transaction production environment.Optimize application performance, quality, and responsiveness.Diagnose and resolve bottlenecks, bugs, and complex challenges.Our Technology StackOur services are primarily developed using C# / ASP.NET, with newer implementations utilizing .NET Core. The front-end is powered by Vue.js for new applications, while legacy systems employ server-rendered (Razor) views combined with jQuery and Knockout.js. We rely on MS SQL Server for data storage, complemented by Redis and ElasticSearch when appropriate. RabbitMQ serves as our message broker, and we utilize GitLab for version control and CI, alongside the Atlassian suite for ticketing and documentation.Your QualificationsA minimum of 1 year of development experience with C# / ASP.NET / MVC (either full framework or .NET Core).Fundamental understanding of web technologies, such as HTTP.Experience in data access, including databases and APIs.Familiarity with unit testing is a plus.Perks of Joining Kaizen Gaming Flexible hybrid working model. Personalized onboarding support through a buddy system. Attractive salary package with performance-based bonuses. Comprehensive health and life insurance for you and your family. Monthly meal allowance.⭐ Continuous development through our 360° feedback framework. Unlimited access to Udemy and ongoing training opportunities.
Join our dynamic team at Devoteam as a Java Backend Developer specializing in the Internet of Things (IoT) within the telecom sector. In this role, you will be responsible for designing, developing, and maintaining robust backend systems that support innovative IoT solutions. You will work in an agile environment, collaborating with cross-functional teams to deliver high-quality software solutions that meet the needs of our clients.Key Responsibilities:Design and implement scalable backend solutions for IoT applications.Collaborate with frontend developers and UX/UI designers to create cohesive applications.Participate in code reviews, unit testing, and debugging processes.Continuously improve application performance and reliability.
