Python Backend Developer - AI Innovations

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

About the Role TransPerfect’s Unbabel team in Lisbon is looking for a Backend Engineer with experience in Python or Go. This role focuses on building and improving backend services that power cross-platform translation solutions for enterprise clients. The team values reliability, scalability, and seamless performance as it develops intelligent language products. Main Responsibilities Design and implement reliable backend architectures and core services. Create, maintain, and optimize codebases with attention to testing and efficiency. Develop, support, and enhance critical services in production environments. Advance the architecture to support scalability, resilience, and high performance. Analyze complex technical problems and help prioritize initiatives with product and engineering teams. Promote continuous improvement, automation, code quality, and adherence to architectural best practices. Work with cross-functional teams to deliver solutions that meet changing business and technical needs. Troubleshoot and prototype to address platform and service challenges quickly. Location This position is based in Lisbon, Lisboa, Portugal.

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.

Role overview Riskified seeks a Backend Engineer in Lisbon to help build and maintain the systems behind its fraud prevention products. This position centers on developing backend applications that keep client transactions running smoothly. The work involves ensuring reliability and scalability across key services. What you will do Design, develop, and maintain backend applications that support fraud prevention efforts Work with colleagues from other teams to deliver solutions that perform well under load Help ensure the stability and scalability of systems that process client transactions

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.

Join Gapstars as a Mid-Level Software Engineer!At Gapstars, we pride ourselves on building innovative remote teams across Sri Lanka and Portugal, dedicated to delivering exceptional software solutions for forward-thinking tech companies. Our dynamic team of over 275 TechStars is committed to transforming scalable software into high-performance products that reshape industries. We collaborate with ambitious partners in technology, striving to excel in their respective markets.Role OverviewWe are looking for a Mid-Level Software Engineer who will be instrumental in supporting a rapidly expanding FinTech cloud-based data and analytics platform utilized by leading global market players. Your role will focus on developing reliable, secure, and high-quality systems that facilitate large-scale data distribution, emphasizing hands-on engineering, automation, and data visualization.This is a hybrid role based in Lisbon, Portugal.Key Responsibilities:Contribute to the growth of our FinTech solutions by shaping technology initiatives.Translate high-level business objectives into scalable, architecturally sound solutions leveraging GCP.Develop robust, secure systems, ensuring effective workarounds for service continuity during failures.Plan and execute structured releases to minimize disruptions, with clear rollback strategies.Mentor junior team members, promoting a culture of continuous learning and development.Essential QualificationsAt least 2 years of experience in Python and/or Java.Strong expertise in databases and cloud data warehouses (e.g., SQL, PostgreSQL).

Join our dynamic team as an Identity & Access Management (IAM) Engineer in Lisbon! We are looking for a talented professional with extensive experience in the implementation of sophisticated IAM controls. This role will focus on technically advanced projects, emphasizing automation, security, and a culture of continuous improvement.Key Responsibilities:Implement cutting-edge IAM controls and continuous monitoring strategies.Ensure adherence to internal policies, standards, and industry best practices.Design and develop automation solutions and technical integrations using Python (or Ruby).Manage and optimize Linux and Windows Server environments.Define, track, and report on security metrics and KPIs.Collaborate effectively with technical teams to enhance and streamline operational processes.Support identity lifecycle management activities, including provisioning, governance, and access review.

The Tripadvisor Group is dedicated to connecting people with experiences that are truly worth sharing. Our mission is to be the most trusted source for travel and experiences globally. By leveraging our esteemed brands, cutting-edge technology, and extensive capabilities, we connect a worldwide audience with partners through engaging content, expert travel advice, and two-sided marketplaces offering experiences, accommodations, restaurants, and more. The Tripadvisor Experiences Engineering team operates across Europe, overseeing Tripadvisor.com, the Tripadvisor mobile applications, and their supporting infrastructure. We manage the systems that empower operators to expand their businesses and enable third parties to access our extensive inventory. Additionally, we provide essential tools that equip our customer service teams to deliver world-class support to travelers and operators around the globe. We are on the lookout for a Software Engineer II to join our rapidly expanding team. This position is available for candidates residing within a commutable distance (typically up to 2 hours) from one of our office hubs in Lisbon, Saldanha. We embrace flexibility in work arrangements while also valuing the importance of in-person interactions for collaboration and connection. Expect a remote-first working model with occasional in-person gatherings at your closest office for team bonding, strategic planning, or other significant moments. At Tripadvisor, our engineers are adaptable and relish tackling diverse technical challenges. This is primarily a backend-focused full-stack role, where you'll predominantly work on backend tasks, with occasional frontend projects. While a strong desire to learn is essential, prior expertise in frontend development is not a prerequisite; we provide on-the-job training. Within our dynamic environment, our engineers collaborate closely with product managers and designers, engaging in the entire software development lifecycle—from design and coding to testing and deployment. Most of our engineers release code to production every few days, following a daily release cycle. Our tech stack includes Java, React, TypeScript, GraphQL, Kubernetes, SQL, and NoSQL databases, all hosted on AWS. While familiarity with every technology is not mandatory, a strong willingness to learn is crucial. You should have experience with a statically typed, object-oriented programming language such as Java, C#, or C++. Perks of Working at Tripadvisor Competitive compensation packages, including base salary and annual bonuses.

Role overview Natixis in Portugal seeks a Python Data Engineer to join the BPCE SI team in Lisbon. This position focuses on managing and improving data pipelines that support business decisions. Fluency in French is essential for daily work and collaboration. What you will do Build, maintain, and optimize data pipelines using Python Support data processing needs for analytics and reporting Work closely with colleagues to strengthen data-driven decision-making What we are looking for Fluent French language skills Strong programming experience with Python This role is based in Lisbon.

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.

Veeva Systems is a visionary organization dedicated to transforming the life sciences industry. As a trailblazer in industry cloud solutions, we empower life sciences companies to expedite the delivery of therapies to patients. Recognized as one of the fastest-growing SaaS companies in history, we achieved over $2 billion in revenue last fiscal year and are poised for continued growth.Our core values drive us: Doing the Right Thing, Ensuring Customer Success, Fostering Employee Success, and Acting with Speed. In 2021, we made history by becoming a public benefit corporation (PBC), which legally commits us to balancing the interests of our customers, employees, society, and investors.As a Work Anywhere company, we embrace flexible work arrangements that allow you to thrive in your preferred environment, be it at home or in the office.Join our mission to revolutionize the life sciences industry, positively impacting our customers, employees, and communities.The RoleOpenData Clinical serves as the backbone for intelligent clinical operations. The primary challenge in the clinical trials sector is patient recruitment, and delays in this phase can hinder the study timeline, ultimately delaying essential treatments for those in need. Our objective is to streamline this process.By pinpointing the most effective clinical sites, we expedite the journey of bringing drugs to market. We anticipate that OpenData Clinical will save at least one life annually by enhancing clinical operations.In this role, you will develop the core of our data quality engine and pipelines, enabling thousands of curators to manage extensive datasets with accuracy and efficiency, ensuring the life sciences sector has the high-quality data necessary to accelerate clinical trials and drug development.This position is ideal for an engineer who prioritizes architectural integrity over quick fixes. You will thrive in an engineering-driven culture that values technical excellence and affords you the freedom to innovate.

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.

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 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.

Join Veeam Software as a Software Developer in Test, where you will play a crucial role in ensuring the quality and reliability of our software products. We seek an enthusiastic individual with a strong background in software testing, particularly in Python or C#. You will collaborate with cross-functional teams to design and implement automated tests that enhance product performance and user experience.

We are seeking a talented and motivated Python Developer (Data Engineer) to join our dynamic team at inetum2 in beautiful Lisbon. In this role, you will leverage your expertise in Python programming and data engineering to develop and maintain robust data pipelines, ensuring seamless data integration and processing.Your primary responsibilities will include building scalable data architectures, collaborating with cross-functional teams to understand data requirements, and optimizing existing data workflows for performance and efficiency.If you are passionate about data-driven solutions and thrive in a fast-paced environment, we want to hear from you!

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.

airapps is looking for a DevOps Engineer with a focus on backend systems to join the team in Lisbon. This position centers on building and maintaining backend infrastructure that supports the company’s applications and services. Role overview The DevOps Engineer - Backend Specialist will take charge of implementing backend solutions that scale and remain reliable. Collaboration with development teams is a key part of the job, especially when refining deployment workflows and improving infrastructure. What you will do Develop and maintain backend systems to support business needs Work alongside developers to streamline deployment processes Contribute to infrastructure enhancements for better reliability and scalability Help ensure smooth, uninterrupted operation of applications and services Location This role is based in Lisbon.