Senior Full Stack Engineer - Python/React at Gapstars | Colombo

About GapstarsGapstars collaborates with Europe's most innovative tech companies, ranging from disruptive startups to rapidly growing scaleups, to create high-performing remote engineering teams.With our headquarters in the Netherlands and talent hubs located in Sri Lanka and Portugal, we are proud to employ over 275 engineers dedicated to addressing real-world challenges through cutting-edge technologies. Our teams excel in various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield impactful results.If you are seeking an organization that values technical excellence, fosters a strong culture, and provides ample opportunities for growth, welcome to Gapstars.About the RoleAre you a highly proficient Full Stack Engineer excited about developing innovative AI-driven applications within the healthcare sector? Do you excel in an environment that pushes you to create scalable and high-performance software solutions? If this resonates with you, we invite you to apply!In this role, you will be instrumental in building and maintaining our AI-powered platforms, ensuring seamless integration between front-end and back-end services. You will collaborate closely with engineers, designers, and product teams to deliver groundbreaking solutions that enhance our healthcare applications.Develop and maintain front-end applications utilizing modern JavaScript frameworks such as React, Vue, or Angular.Design, implement, and optimize scalable backend services using Python frameworks like FastAPI, Flask, or Django.Create and integrate RESTful APIs to support AI-driven applications.Optimize databases for performance and scalability using SQL.Implement and manage CI/CD pipelines to streamline software deployment.Troubleshoot and debug issues across the stack, ensuring high system reliability.Engage in code reviews and promote best coding practices.Work collaboratively with cross-functional teams to translate business requirements into technical solutions.

Join Our Team at GapstarsAt Gapstars, a premier software development services provider headquartered in the Netherlands, we specialize in creating agile remote teams in Sri Lanka and Portugal, dedicated to empowering innovative tech companies. With over 300 talented TechStars, we transform scalable software into impactful performance products that define the future. Our collaborators are ambitious tech firms aiming to dominate their markets.Role OverviewWe are seeking a Data Operations Engineer to become an integral part of our dynamic team. This role will revolve around our Python-based data engineering platform, which includes data lakes and processing pipelines. You will be responsible for developing and maintaining robust data pipelines, ensuring that our solutions are architected for optimal efficiency, security, reliability, performance, and cost-effectiveness.The ideal candidate will possess 1-2 years of experience in data engineering with a strong emphasis on data operations, including ETL/ELT processes, data management, and delivery. Excellent communication abilities, analytical skills, and meticulous documentation practices are essential, along with experience in collaborating with diverse business stakeholders.Key Responsibilities Manage multiple data load pipelines to ensure operational efficiency.Develop and maintain data solutions with a focus on best practices.Collaborate with cross-functional teams to gather and analyze data requirements.Implement data quality measures and performance tuning.

About GapstarsGapstars, a premier software development services provider based in the Netherlands, excels in assembling remote agile teams in Sri Lanka and Portugal for forward-thinking tech companies. With a vibrant community of over 300 TechStars and innovative professionals, we transform scalable software into high-performance products that pave the way for the future. Our partners are ambitious tech enterprises striving to dominate their markets.The RoleAt Gapstars, we are dedicated to driving growth for ambitious tech companies by harnessing exceptional tech talent. We are seeking a seasoned and driven engineer with robust programming fundamentals and adaptability to new frameworks. As an Associate Technical Lead, you will design, develop, and deploy user-facing features while ensuring our product maintains its high-quality standards to meet the needs of millions of users.

Join Our Team at GapstarsAt Gapstars, we collaborate with some of Europe’s most forward-thinking tech companies, ranging from innovative startups to rapidly growing scale-ups, to assemble high-performing remote engineering teams.Our headquarters are in the Netherlands, with talent hubs located in Sri Lanka and Portugal, housing over 300 engineers passionate about tackling real-world challenges using cutting-edge technologies. Our teams operate across various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield impactful results.If you seek an organization that values technical excellence, fosters a supportive culture, and encourages professional growth, look no further than Gapstars.

About GapstarsGapstars is dedicated to partnering with Europe's most innovative tech companies, from disruptive startups to rapidly growing scaleups, assisting them in building highly effective remote engineering teams.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we proudly employ over 275 engineers who excel in addressing real-world challenges using cutting-edge technologies. Our teams operate across various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield significant outcomes.If you're seeking a workplace that fosters technical excellence, promotes a vibrant culture, and offers opportunities for professional growth, look no further than Gapstars.

Gapstars, headquartered in the Netherlands, builds remote software development teams in Sri Lanka and Portugal. With over 300 TechStars, the company partners with ambitious tech firms to deliver scalable software solutions. Gapstars focuses on supporting businesses that aim to lead in their respective markets. Role overview This AI Engineer role is based in Colombo, Sri Lanka. The position combines software engineering with applied AI, centering on the development, evaluation, and maintenance of AI systems for production use. Much of the work addresses the needs of the life sciences sector, where reliability and measurable impact matter. AI Engineers at Gapstars collaborate with data scientists, software engineers, and product managers. The team values practical automation, efficiency, and solutions that work in real-world conditions. What you will do Build and deploy AI-powered applications, moving from prototype to production using modern large language model (LLM) frameworks and APIs. Design evaluation methods and metrics to assess real-world performance, focusing on accuracy, latency, user experience, and safety. Develop and refine Retrieval-Augmented Generation (RAG) pipelines by integrating vector databases and large language models. Create and maintain data pipelines, retraining workflows, and monitoring tools to ensure models remain current and effective. Design and apply context engineering strategies that improve output quality and reduce hallucination risks. Work with product, platform, and infrastructure teams to understand business needs and build scalable, reliable systems. Apply agentic AI patterns, such as tool use, planning, and reflection loops, selecting the right level of complexity for each project. Promote strong engineering practices, including code reviews, testing, observability, continuous integration and deployment (CI/CD), and reproducibility. Ensure AI solutions comply with security, regulatory, and explainability standards.

Gapstars, based in the Netherlands, delivers software development services and builds remote teams in Sri Lanka and Portugal. The company supports tech businesses with technology solutions aimed at growth. Over 300 professionals at Gapstars help partners turn scalable software into reliable, high-performance products. Role overview The Senior Quality Assurance Lead guides quality and security practices within the product team. This role shapes and maintains the quality framework, focusing on improving release stability and embedding quality assurance throughout the development cycle. What you will do Lead quality and security initiatives within the product team Develop and maintain the team's quality framework Work to improve release stability and reduce production issues Collaborate closely with engineering and product teams Balance hands-on testing with strategic leadership Support continuous improvement in testing approaches and team practices

About GapstarsGapstars is an innovative software development services provider based in the Netherlands, dedicated to creating agile, remote teams in Sri Lanka and Portugal for forward-thinking tech companies. With over 275 talented TechStars and creative minds, we transform scalable software into high-performance products that are shaping the future. Our partners are ambitious tech firms eager to dominate their respective markets.The RoleAs a Tech Lead, you will oversee the technological aspects of our products, collaborating closely with data scientists and the CTO. You will engage in the iterative development of our application (both web and native), and actively participate in roadmap discussions, sprint planning, and retrospectives. Your contributions will be pivotal in driving the company’s growth by implementing scalable technology solutions that address real-world challenges.Develop our backend using Python and Postgres, along with a modern React frontend.Work on data processing pipelines that utilize open banking data to produce various types of business and financial intelligence.Assist in dev-ops and infrastructure tasks to enhance our technical environment.Drive improvements within our codebase and collaborate with the CTO to maintain smooth technological operations.Contribute in any other areas where your skills can shine.

About GapstarsGapstars is a dynamic partner to some of Europe’s most innovative tech companies, ranging from disruptive startups to rapidly scaling scaleups. We specialize in building high-performing remote engineering teams to tackle real-world challenges using cutting-edge technologies.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, our team of over 275 engineers works across various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that lead to impactful outcomes.If you are in search of a company that embodies technical excellence, a vibrant culture, and ample opportunities for growth, you’ve found your place at Gapstars.As an Operations Finance Analyst, your main responsibilities will center on budgeting, forecasting, and variance analysis for our Operations and Product activities. You will not just report on past outcomes but will provide stakeholders with insights into the reasons behind those outcomes, their implications, and recommended actions. Your expertise will be pivotal in championing zero-based budgeting and driver-based forecasting, ensuring that our financial plans reflect operational realities rather than historical patterns.Additionally, you will assist in evaluating new product introduction projects and operational efficiency initiatives, providing essential financial analysis and governance that supports informed investment decisions.This role is situated at the nexus of finance and operations, demanding both analytical precision and the ability to convey insights clearly to stakeholders. By collaborating with the Operations Accountant on month-end tasks, you will gain a profound understanding of the accounting principles that inform your analyses. You will be empowered to challenge assumptions, pose difficult questions, and enhance decision-making through advanced financial analysis.A significant aspect of your role will involve collaborating with the Data & Analytics team in IT and the Purchase Ledger team to ensure efficient data capture and reliable automation workflows. This collaboration will enable you to focus on delivering value through analysis and insights instead of spending time on data transformation.

About GapstarsGapstars is a premier software development services provider based in the Netherlands, specializing in creating remote, agile teams in Sri Lanka and Portugal tailored for innovative technology companies. Our dynamic workforce of over 300 TechStars and forward-thinking professionals is committed to transforming scalable software into high-performance products that define the future. We partner with ambitious tech companies eager to dominate their respective markets.About the RoleWe are on the lookout for a pragmatic Senior AI Engineer who possesses a strong foundation in software engineering and is eager to navigate the rapidly evolving realm of applied AI. In this role, you will design, develop, and assess AI systems that are not only reliable and measurable but also genuinely impactful, moving beyond mere demonstrations.Your collaboration with data scientists, software engineers, and product managers will be crucial in delivering AI solutions that create meaningful change. You will embody the principles of evaluation over hype, embrace automation where it enhances efficiency, and advocate for simple yet high-performing systems within the life sciences sector.Key ResponsibilitiesDevelop and deploy AI-driven applications from prototype to production utilizing modern LLM frameworks and APIs.Design evaluations and metrics to assess real-world performance, including accuracy, latency, user experience quality, and safety.Construct and refine Retrieval-Augmented Generation (RAG) pipelines that integrate vector databases and LLMs.Implement data pipelines, retraining processes, and monitoring tools to keep models current and effective.Establish and apply context engineering strategies to enhance output quality and mitigate hallucination risks.Collaborate with product, platform, and infrastructure teams to align with business goals and build scalable, resilient systems.Employ agentic AI patterns (tool use, planning, reflection loops) pragmatically, selecting the appropriate complexity for each scenario.Promote strong engineering practices including code reviews, testing, observability, CI/CD, and reproducibility.Ensure that AI solutions adhere to security, compliance, and transparency standards.

About GapstarsGapstars collaborates with some of Europe’s most innovative tech firms, from disruptive startups to rapidly growing scaleups, assisting them in assembling high-performing remote engineering teams.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a vibrant community of 275+ engineers dedicated to tackling real-world challenges through modern technologies. Our teams span various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield significant results.If you seek a workplace that champions technical excellence, fosters a strong culture, and provides ample growth opportunities, look no further than Gapstars.About the RoleWe are currently on the lookout for an Associate Technical Lead to become part of our expanding team focused on a cutting-edge, cloud-based platform. This position is ideal for someone with a robust technical background, excellent communication skills, and a solution-oriented mindset.In this role, you will engage with both backend and frontend components, contribute to architectural strategies, and aid in the platform's evolution. We value self-starters who can take initiative and work autonomously within a lean team structure.What You’ll DoDevelop and maintain backend services utilizing C# (.NET 7) and SQL.Enhance frontend applications using TypeScript with frameworks like Blazor or Vue.Design and implement RESTful APIs, ensuring seamless integration between frontend and backend components.Leverage Azure-based cloud services to create scalable and dependable solutions.Work collaboratively with engineers and stakeholders to translate requirements into effective solutions.Engage in live troubleshooting, debugging, and performance optimization efforts.Adapt to evolving tools, frameworks, and processes as the platform progresses.

Gapstars, a software development services company with headquarters in the Netherlands, brings together more than 300 technology professionals across Sri Lanka and Portugal. The company partners with ambitious tech businesses, providing agile remote engineering teams focused on building scalable, high-performance software products. Role overview The Technical Lead - Node/React will play a central role in guiding the development of modern web platforms within a cross-functional team in Colombo. This position centers on leading key components of the platform, fostering both technical quality and the professional growth of team members. The role suits those who enjoy building large-scale SaaS applications and value continuous learning. What you will do Lead the design and development of essential platform features using Node.js and React Mentor and support a development team, promoting best practices in code quality, security, and scalability Work closely with partners and internal stakeholders to deliver solutions with significant impact Keep up with industry trends and contribute to technical decisions Requirements Experience building large-scale SaaS applications Previous background in leading development teams Strong understanding of code quality, security, and scalable architecture Motivation for ongoing personal and professional development Location This role is based in Colombo, Western Province, Sri Lanka.

About Gapstars Gapstars partners with leading tech companies across Europe, supporting both startups and scaleups as they build remote engineering teams that deliver real results. Headquartered in the Netherlands, with talent hubs in Sri Lanka and Portugal, Gapstars employs more than 300 engineers. Teams work on projects spanning networking, marketplaces, SaaS, and AI, always focused on practical solutions to real-world problems. The company places a strong emphasis on technical skill, a supportive culture, and opportunities for personal development. Gapstars aims to be a place where engineers can grow and make an impact.

About GapstarsGapstars is a leading software development services provider based in the Netherlands, dedicated to creating remote, agile teams in Sri Lanka and Portugal that empower innovative tech companies. With over 300 talented TechStars and visionary professionals, we transform scalable software into high-performance products that shape the future. We partner with ambitious tech companies eager to dominate their respective markets.About the RoleWe are seeking a dynamic Senior System/Platform Engineer who will take charge of a complex, 15-year-old Java-based hosting platform operating across approximately 30 interconnected servers. The environment includes legacy Java application components (such as GlassFish) and has limited documentation, presenting a core challenge: to map, document, stabilize, and future-proof the platform from an operational perspective.This role prioritizes operational responsibilities over development tasks. Familiarity with Java is essential primarily for understanding Java runtimes/app servers and troubleshooting Java applications in a production setting.Key ResponsibilitiesManage daily operations, ensuring the stability and performance of a legacy Java platform within a multi-server environment.Identify, map, and document the complete application and server architecture, including dependencies, traffic flows, integrations, and operational runbooks.Serve as the primary technical contact for production-related issues concerning the Java platform and its underlying infrastructure.Analyze and resolve complex incidents, including availability issues, performance degradation, capacity constraints, JVM/app server behaviors, and OS-level problems.Drive operational enhancements in monitoring, alerting, backup/restoration practices, patching strategies, and incident prevention measures.Collaborate with development and operations teams for troubleshooting, root cause analysis, and recommendations.Provide hands-on support for releases, deployments, configuration changes, and environmental maintenance.Utilize hosting/admin tools like Plesk to standardize and optimize server configurations.Identify and propose steps for platform modernization and future-proofing initiatives in a pragmatic manner.

About GapstarsGapstars is a dynamic software development service provider based in the Netherlands, renowned for assembling agile remote teams across Sri Lanka and Portugal. Our talented collective of over 300 TechStars is dedicated to transforming scalable software into high-performance products that define the future. We proudly partner with ambitious tech companies eager to dominate their markets.The RoleWe are seeking an experienced Senior/Lead Full Stack Software Developer to join our client's tech and product team. In this pivotal role, you will be responsible for crafting clean, efficient, and scalable code while also mentoring team members, influencing vital architectural decisions, aiding the tech lead in hiring processes, and collaborating with external partners and suppliers. Most crucially, you will be instrumental in developing and enhancing a transformative mental health platform.Our technology stack includes: .NET 8, SQL Server, React, and Azure.

About Gapstars Gapstars is a software development services company headquartered in the Netherlands, with a focus on building remote, agile teams in Sri Lanka and Portugal. The company partners with tech firms aiming to scale, offering talent and solutions that help turn software into meaningful products. With a team of over 275 TechStars, Gapstars supports clients as they grow their businesses and compete in their markets. Role Overview The Associate Tech Lead / Tech Lead - Python will guide technical development across products, working closely with data scientists and the CTO. This role involves hands-on work in both web and native application development, as well as participation in roadmap planning, sprints, and retrospectives. The position calls for a blend of technical leadership and active contribution to building scalable technology that solves real business problems. Key Responsibilities Improve the Python and Postgres backend, and contribute to the React frontend. Build data processing pipelines to analyze open banking data and deliver business and financial insights. Support dev-ops and infrastructure activities as needed. Recommend enhancements to the codebase and work with the CTO to maintain strong technical performance. Take initiative in areas that match your strengths and expertise. Location This position is based in Colombo, Western Province, Sri Lanka.

About GapstarsGapstars, a premier software development services provider located in the Netherlands, specializes in creating remote, agile teams in Sri Lanka and Portugal for pioneering technology firms. With over 300 talented TechStars and innovative professionals, we transform scalable software into high-performance products that drive the future. Our partners include ambitious tech companies eager to dominate their markets.About the RoleWe are seeking a Front-End Developer who will be instrumental in crafting modern, efficient, and sustainable web application interfaces. This role demands extensive collaboration with React, TypeScript, and Tailwind CSS to build scalable UI components and functionalities. A keen focus on user experience, client-side performance enhancement, and seamless backend integration is essential.Key ResponsibilitiesDesign and implement responsive, reusable UI components using React, TypeScript, and Tailwind CSSDevelop effective data fetching methodologies utilizing TanStack QueryOversee client-side state management employing ZustandEnhance client-side performance and optimize page load timesCollaborate closely with back-end engineers, designers, and product managersGuarantee UI accessibility, responsiveness, and cross-browser compatibilityProduce clean, maintainable code that adheres to modern front-end best practicesEngage in code reviews and contribute to the architectural decisions of the front-end

About GapstarsAt Gapstars, we collaborate with some of Europe’s most innovative tech enterprises, ranging from disruptive startups to rapidly expanding scaleups. Our mission is to aid them in constructing high-performing remote engineering teams.With headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a workforce of over 275 engineers dedicated to solving real-world problems through cutting-edge technologies. Our teams operate in various sectors, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that lead to impactful results.If you seek a workplace that values technical excellence, fosters a strong culture, and offers ample opportunities for growth, Gapstars is the right place for you.About the RoleAre you an experienced Full Stack Engineer passionate about developing innovative AI-driven applications in the healthcare sector? Do you excel in dynamic environments that challenge you to create scalable and high-performance software solutions? If so, this opportunity is tailored for you!The OpportunityAs a seasoned Full Stack Engineer, you will engage in the design, development, and deployment of scalable applications that support AI-driven solutions. Collaborating closely with engineers, designers, and product teams, you will optimize both front-end and back-end systems for peak performance and reliability.Key ResponsibilitiesDevelop front-end components using contemporary JavaScript frameworks such as React.Design, construct, and enhance scalable back-end services utilizing Python (Flask, FastAPI, or Django).Implement and refine RESTful APIs to ensure seamless integration with front-end components.Design and optimize databases for performance and scalability, primarily using PostgreSQL.Automate CI/CD pipelines and manage AWS cloud deployments.Participate in code reviews and advocate for development best practices.Troubleshoot and resolve production issues, ensuring system reliability.Collaborate with cross-functional teams to translate business requirements into technical solutions.

About GapstarsGapstars partners with some of Europe’s most ambitious tech companies, from disruptive startups to rapidly growing scaleups. Our mission is to assist these companies in building high-performing remote engineering teams. Headquartered in the Netherlands, with talent hubs in Sri Lanka and Portugal, we proudly host over 275 engineers who excel at solving real-world challenges using cutting-edge technologies. Our teams operate across various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that produce meaningful outcomes. If you desire a workplace that champions technical excellence, fosters a strong culture, and offers opportunities for growth, look no further than Gapstars.The RoleAs we transition our Data and Analytics operations entirely to the cloud (specifically Azure Databricks), we are on the lookout for a Lead Data Engineer/Architect to lead our data engineering and architecture initiatives. This role will involve collaborating closely with the Head of Data and Analytics and guiding a team of master data specialists, analytics/BI engineers, reporting developers, and data scientists in converting business requirements into efficient end-to-end solutions. You will also determine where we can add the most value within our highly engaged organization.Your responsibilities will include working with diverse data sets from multiple systems, ensuring their seamless integration and optimization to extract valuable insights for our business. This will cover everything from the initial development of data pipelines to their ongoing management and optimization using tools available in Azure Cloud.Your contributions will directly influence the creation and implementation of data-driven strategies, providing pivotal insights that enhance decision-making and strategic planning. Join us in our mission to revolutionize urban living by ensuring our data management and analysis processes are efficient, reliable, and insightful.The platform you'll inherit:Azure Databricks on Private PaaS - VNet injection, no public IPs, 57 private endpoints, NAT gateways with stable egress5-subscription CAF Landing Zone architecture with full network isolationMetadata-driven ingestion via ADF orchestrating Databricks notebooks, with Autoloader and DLT pipelines downstream40+ data sources including Infor (global ERP), Xero (7 regions), Cin7 (4 regions), NetSuite, Salesforce, BigCommerce, Lightspeed, and othersUnity Catalog, Key Vault integration, CI/CD from Azure DevOpsAnnual Databricks commitment on a 3-year contractThe reality you'll walk into:Bronze and silver layers exist for most sources, but the gold layer is under development and presents an exciting opportunity for growth.

Join Gapstars as a Senior Software Engineer / Associate Technical Lead!At Gapstars, we collaborate with some of Europe's most innovative tech companies, from groundbreaking startups to rapidly growing scaleups, to assemble high-performance remote engineering teams.With our headquarters located in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast over 275 engineers who are passionate about tackling real-world challenges using state-of-the-art technologies. Our teams engage in a wide array of domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield impactful results.If you are seeking a workplace that values technical excellence, fosters a strong culture, and provides ample opportunities for personal and professional growth, look no further than Gapstars.Role OverviewAre you a talented Full Stack Engineer excited to develop pioneering AI-driven applications in the healthcare sector? Do you excel in environments that push you to create scalable and high-performing software solutions? If yes, we would love to hear from you!Your OpportunityIn your role as a Full Stack Engineer with a strong focus on back-end development, you will be responsible for designing, developing, and deploying scalable applications that power our AI-driven solutions. Collaborating closely with engineers, designers, and product teams, you will ensure that both front-end and back-end systems are optimized for performance and reliability.Key ResponsibilitiesDevelop front-end components utilizing modern JavaScript frameworks such as React.Design, build, and enhance scalable backend services using Python frameworks (Flask, FastAPI, or Django).Implement and optimize RESTful APIs, ensuring seamless integration with front-end components.Design and optimize databases for performance and scalability, particularly using PostgreSQL.Automate CI/CD pipelines and manage AWS cloud deployments.Engage in code reviews and apply best practices for software development.Diagnose and resolve production issues to ensure system reliability.Collaborate with cross-functional teams to translate business requirements into technical specifications.