Senior Backend Engineer

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 projec…

Join our dynamic Portugal team as a Backend Engineer at Dragonboat. We thrive in a startup and fast-paced environment where our engineers actively contribute to delivering exceptional value to our customers. If you're passionate about developing scalable systems, collaborating in a creative setting, and making a significant impact, we want to hear from you!In this role, you will have the chance to build the very product that you and our customers use daily, receiving direct feedback for continuous improvement. Witness the real-world impact of your contributions!About the PositionManaging portfolio decisions at scale presents complex data challenges. Our customers handle thousands of initiatives across numerous teams and require a platform that can interpret this information quickly, reliably, and intelligently. This is the essence of the role.You will develop the systems that drive Dragonboat's platform—from the ontology representing a portfolio to the integrations that synchronize with the tools our customers use. You will also lay the backend groundwork that enables the creation of AI-driven features.This position is ideal for someone who takes immense pride in backend engineering, desires genuine ownership of impactful systems, and operates with a sense of urgency.Key ResponsibilitiesTake ownership of and enhance the core platform, including the data model, APIs, and services that underpin all functionality.Design and construct backend systems that power our portfolio intelligence layer, focusing on data aggregation, scoring, and large-scale analysis.Develop and maintain integrations with the tools our customers utilize daily.Make strategic architectural decisions that will support our growth.Collaborate closely with product teams and engineers to swiftly navigate from problem identification to solution implementation.Utilize advanced coding tools as a fundamental part of your workflow.

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.

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 Air AppsAt Air Apps, we embrace a vision of expansive thinking and agile execution. Founded by a family in 2018, our mission is to revolutionize planning with the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP). With our roots in Lisbon, Portugal, and additional offices in San Francisco, we have successfully maintained self-funding while achieving over 100 million downloads globally.Our commitment to long-term innovation drives us to continually challenge conventional wisdom, expanding the frontiers of AI-driven solutions that genuinely transform lives. Here, you will play a pivotal role in crafting products that empower individuals worldwide.Join us on our mission to redefine resource management and make a lasting impact.The RoleAs a Backend Software Engineer, you will take charge of designing, developing, and maintaining the server-side components of our applications. You will work collaboratively with product managers, frontend developers, and other cross-functional teams to deliver robust and scalable backend services that enable essential features and foster rapid growth.Please be aware that this posting is intended to expand our talent pool while we prepare to officially launch the job. We will reach out to you as soon as it becomes available.ResponsibilitiesAPI & Service Architecture - Design and implement RESTful or GraphQL APIs, microservices, and business logic utilizing Node.js and TypeScript.Database Design & Integration - Model and manage data queries using Supabase and PostgreSQL, including functions, row-level security, and real-time features.Cloud Infrastructure - Deploy and oversee services on Google Cloud Platform (GCP), particularly with Cloud Run, Cloud Functions, IAM, and Pub/Sub.Code Quality & Testing - Create clean, testable code utilizing unit, integration, and end-to-end testing frameworks (e.g., Jest). Participate in code reviews and uphold quality assurance practices.Security & Reliability - Develop secure-by-default solutions for authentication, authorization, and data protection, adhering to Clean Code and Clean Architecture principles.Monitoring & Operations - Establish logging, monitoring, and operational practices to ensure system reliability.

Join our dynamic team at inetum2 as a Java Backend Engineer. We are looking for a talented individual who is passionate about backend development and eager to contribute to innovative technology solutions. In this role, you will collaborate with cross-functional teams to design and implement high-quality software solutions that meet our clients' needs.

The Squarespace Domains & Applications team is seeking a talented Senior Backend Engineer to enhance our dynamic Domains Teams. As a key component of our customers' online identities, our domain products play a vital role in Squarespace’s overarching goal. Currently, our team is dedicated to designing innovative products and expanding the capabilities of one of the world’s largest domain registrars. In this position, you will be instrumental in creating scalable architectures, optimizing performance, and ensuring long-term sustainability, contributing to the comprehensive development of features that support millions of digital identities. You will be reporting to the Engineering Team Manager in Aveiro, Portugal, with a hybrid working model requiring a minimum of three days per week in the office.

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 Dashlane as a Backend Software Engineer and be part of a dynamic team dedicated to enhancing digital security for our users worldwide. In this role, you will design, develop, and maintain scalable backend systems that support our innovative applications. Your contributions will directly impact the user experience and the overall success of our products.

Internship Overview evolution is looking for a Backend Engineering Intern to join the team in Lisbon. This position offers hands-on experience with real projects and the chance to work closely with seasoned engineers. What to Expect Collaborate with the engineering team on active backend projects Gain practical skills and learn from experienced colleagues Contribute ideas and support ongoing development work This internship is designed for those eager to grow technical abilities in a supportive, team-driven setting.

The Squarespace Domains & Applications team is actively seeking a Backend Engineer to join our dynamic Domains Registrar team. Our domain products serve as the cornerstone of our customers' digital identities, playing a crucial role in Squarespace’s mission. Currently, our focus is on architecting innovative products and enhancing the features of one of the world’s largest domain registrars. In this role, you will concentrate on high-scale architecture, performance, and long-term scalability, contributing to the comprehensive development of components that support millions of online identities. You will report directly to the Engineering Team Manager based in Aveiro, Portugal, working in a hybrid capacity (minimum of 3 days per week in-office).

Join Sword Health, a leader in AI-driven healthcare innovation, as a Senior Backend Engineer. In this pivotal role, you'll design and implement backend systems that support our AI Care platform, enhancing accessibility and affordability of healthcare worldwide. Your expertise will help us expand our groundbreaking solutions across various health domains, including pain care, women's health, and mental health. Collaborate with a talented team dedicated to transforming healthcare delivery and improving patient outcomes. Be part of a company that has successfully conducted over 10 million AI sessions and saved clients over $1 billion since its inception.

Emma Sleep is hiring a Senior Backend Engineer with expertise in Golang to help shape the technology behind its global platform. This position is based in Lisbon and centers on developing and refining backend systems that keep Emma Sleep’s operations running smoothly. Key responsibilities Design, build, and maintain backend services using Golang Improve system performance and scalability Support the reliability and efficiency of Emma Sleep’s technology platform Location This role is located in Lisbon.

Join our innovative team at Devexperts as a Backend Engineer, where your skills will contribute to one of the premier trading platforms in the USA, catering to over 200,000 online users daily across multiple devices. Our advanced infrastructure supports over 1 million requests per second, ensuring seamless operations. Your role will encompass the backend services that manage crucial trading processes, including order issuance, validation, routing, execution, option price calculation, and reconciliation. We emphasize high performance, low latency, and robust fault tolerance in our development practices. Through meticulous code reviews and various testing methodologies, we uphold the highest code quality standards.As a Backend Engineer, you will take ownership of backend services, infrastructure, and data systems, tackling complex scalability challenges while deepening your expertise in U.S. financial systems. Your contributions will have a direct impact on products that serve millions.

Jobgether is looking for a Backend Engineer based in Portugal. This role centers on building and maintaining the server-side logic that powers our platform. Role overview As a Backend Engineer, you will develop and maintain backend systems to support high performance and responsiveness. Working closely with front-end developers, you will help integrate user-facing features with server-side processes. Your work will shape the API design and implementation, ensuring smooth data flow between systems. Key responsibilities Develop and maintain server-side logic Collaborate with front-end developers to connect user interfaces with backend systems Design and implement APIs Optimize applications for speed and scalability Location This position is based in Portugal.

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 AirApps as a Backend QA Engineer where you will play a crucial role in ensuring the quality and reliability of our backend systems. You will collaborate with developers to design and implement test plans, identify bugs, and enhance our products' performance. This is an exciting opportunity to contribute to a growing tech company in a vibrant city.

About the Role tgs is looking for a Backend Engineer (Python or Go) to join the Unbabel division in Lisbon. This team builds and maintains backend services that support enterprise-grade translation solutions across platforms. The work centers on making language technology smarter and more seamless for clients worldwide. What You Will Do Design and implement core backend services and reliable system architectures. Build, maintain, and improve codebases with an emphasis on testability and efficiency. Develop, optimize, and support key services and infrastructure in live production environments. Enhance system architecture to improve scalability, resilience, and performance. Analyze complex technical problems and help prioritize initiatives alongside product and engineering teams. Encourage continuous improvement, automation, code quality, and strong architectural practices. Work with teams across disciplines to deliver solutions that adapt to changing business and technical needs. Troubleshoot and prototype quickly to address platform and service challenges as they arise. Location Lisbon, Lisboa, Portugal

The Acuity Scheduling team is on the lookout for seasoned Backend Engineers to join our dynamic Acuity Engineering group. Acuity Scheduling is a unique brand and platform within the broader Squarespace ecosystem, dedicated to empowering appointment-based businesses. Our goal is to facilitate the growth of these businesses by enabling clients to effortlessly schedule appointments, alleviating administrative burdens, and allowing our users to dedicate more time to their passions. As a Backend Engineer, you will play a critical role in enhancing our architecture, boosting performance, and ensuring scalability. Your contributions will encompass the complete development cycle of various components while shaping the long-term strategic vision of Squarespace. This position is a hybrid role, requiring you to work from our Aveiro office three days a week. You will report directly to the Software Engineering Manager and be part of Squarespace's foundational team in Portugal, helping to establish our presence in the market.

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.