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-wo…

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.

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.

About GapstarsGapstars is a leading software development service provider based in the Netherlands, specializing in creating agile remote teams in Sri Lanka and Portugal for forward-thinking technology companies. With a vibrant community of over 300 TechStars and innovative professionals, we transform scalable software into high-performance products that redefine the future. Our partners are ambitious tech enterprises eager to dominate their markets.About the RoleWe are seeking a proactive AI Engineer to design, construct, and scale impactful generative AI systems that provide substantial value to both our customers and internal teams.This position starts as a standalone AI role integrated within a robust, collaborative engineering culture. You will closely collaborate with product managers, software engineers, and stakeholders from customer support, marketing, and technology to swiftly and safely bring AI concepts into production, with a focus on measurable outcomes. The emphasis is on applied generative AI, utilizing modern LLMs, APIs, and agentic patterns to develop reliable, user-facing systems without the need to train foundational models from scratch.What You’ll Work OnCustomer Support AI Agent:Develop and enhance an AI agent integrated with Salesforce to manage customer support inquiries, leveraging robust orchestration, tooling, and evaluation frameworks.AI for Marketing Enablement:Assist the marketing team with AI-driven image editing and content workflows through prompt engineering, automation, and systematic evaluation.Internal AI Enablement:Promote AI integration across the broader engineering organization by identifying opportunities, building prototypes, and operationalizing successful use cases.ResponsibilitiesDesign, build, and deploy production-grade AI systems utilizing modern LLM APIs and frameworks.Implement agentic AI patterns, including tool use, planning, reflection loops, and multi-step workflows, selecting the appropriate complexity for each case.Create evaluation frameworks (“evals”) to assess system quality, reliability, latency, user experience, and safety.Develop and optimize RAG pipelines and context engineering strategies as needed, without defaulting to RAG for every challenge.Coordinate AI workflows that integrate with existing systems (e.g., Salesforce, internal APIs, marketing tools).Work closely with software engineers to ensure that AI systems adhere to robust engineering practices and are ready for production.Manage AI solutions comprehensively, from experimentation and prototyping to deployment, monitoring, and iterative improvement.Apply infrastructure-as-code, CI/CD, and observability principles to AI systems.Act as a mentor for other engineers, guiding them in the application of AI technologies.

Role overview ifs1 is seeking a Lead, Senior Lead, or Principal AI Engineer in Colombo. The focus of this position is on designing and building advanced AI solutions that enhance user experiences and make business operations more efficient. What you will do Design and implement AI systems tailored to real business challenges Collaborate with multidisciplinary teams to deliver intelligent solutions Oversee projects from initial concept to deployment, maintaining high technical standards Location This position is based in Colombo.

About GapstarsGapstars is an innovative software development service provider based in the Netherlands. We specialize in creating remote, agile teams in Sri Lanka and Portugal, partnering with ambitious tech companies to help them conquer their markets. With a talented workforce of over 300 TechStars, we focus on transforming scalable software into high-performance products that shape the future of technology.About the RoleWe are on the lookout for a pragmatic AI Engineer to bridge robust software engineering practices with the dynamic field of applied AI. In this role, you will design, build, and evaluate AI systems that are not only reliable and measurable but also genuinely useful beyond mere demonstrations.You will collaborate closely with data scientists, software engineers, and product managers to deliver impactful AI solutions. Your approach prioritizes evaluation over hype, automation for efficiency, and simplicity for high performance in production, particularly within the life sciences sector.ResponsibilitiesDevelop and deploy AI-driven applications from prototypes to production using cutting-edge LLM frameworks and APIs.Design evaluations and metrics that accurately measure real-world performance, including accuracy, latency, user experience quality, and safety.Construct and enhance Retrieval-Augmented Generation (RAG) pipelines that integrate vector databases with LLMs.Implement data pipelines, retraining workflows, and monitoring tools to maintain the currency and performance of AI models.Develop and execute context engineering strategies to enhance output quality and mitigate hallucination risks.Work alongside product, platform, and infrastructure teams to comprehend business requirements and develop scalable, resilient systems.Apply pragmatic agentic AI patterns, such as tool use, planning, and reflection loops, selecting the appropriate complexity for each application.Promote best engineering practices, including code reviews, testing, observability, CI/CD, and reproducibility.Ensure that AI solutions adhere to security, compliance, and explainability standards.

Role overview Speechify seeks a Tech Lead to join the Android Core Product team in Colombo, Sri Lanka. This position steers Android development and plays a key part in shaping the future of Speechify’s mobile apps. What you will do Lead Android projects through all stages, from initial concept to final release Collaborate with engineers, designers, and product managers to deliver features that enhance the user experience Make technical decisions and establish best practices for the Android team Promote teamwork across different groups to achieve product objectives

About the RoleJoin homey, a cutting-edge property conveyancing platform powered by a robust Ruby on Rails monolith. We are seeking an experienced Senior Software Architect to spearhead the technical evolution of our platform. Your role will involve enhancing system architecture, minimizing technical debt, and ensuring scalability, performance, and security as we expand. Collaborate closely with product and engineering teams to craft innovative solutions, guide architectural choices, and uphold exemplary engineering standards.Key ResponsibilitiesEstablish and uphold system architecture and technical benchmarks.Design and review solutions for new features and integrations.Enhance code quality, performance, and scalability.Lead significant refactorings and secure data migrations.Guarantee secure processing of payments and sensitive information.Mentor engineering talent and facilitate informed technical decisions.

About GapstarsAt Gapstars, we collaborate with some of Europe’s most innovative tech companies—ranging from disruptive startups to rapidly scaling enterprises. Our mission is to help them establish high-performing remote engineering teams. With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we are proud to host over 275 engineers dedicated to tackling real-world challenges using cutting-edge technologies. Our teams operate across a variety of domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield impactful results. If you seek a workplace that values technical proficiency, fosters a robust culture, and encourages professional growth, you’ll find your home at Gapstars.About the RoleWe are in search of a Lead Data Engineer / Analytics professional to join our team in a hybrid capacity that bridges the Data Engineering and Data Science teams. This role is designed to directly assist the Data Science team by creating internal tools, automating repetitive workflows, and managing data engineering tasks that may not always be prioritized by the primary Data Engineering function.Your main objective will be to enhance the efficiency of the Data Science team by optimizing their access to, transformation of, enrichment of, and utilization of data. This position emphasizes data engineering rather than pure Data Science, and is ideal for someone with a strong understanding of analytics who can closely collaborate with data scientists to resolve practical data challenges.This individual will report to the relevant engineering structure while being primarily dedicated to supporting the daily needs of the science team.Data Engineering & AutomationConstruct, maintain, and enhance internal data pipelines that meet the needs of the Data Science team.Automate recurring manual tasks and operational processes using Python.Transform, clean, and enrich data sourced from various internal and external origins.Develop reusable scripts, tools, and lightweight frameworks to boost team productivity.Create simplified data views, models, and libraries that facilitate efficient and reliable data access for analytics and scientific applications.Analytics EnablementCollaborate closely with data scientists to understand their data requirements and translate them into scalable engineering solutions.Assist in the preparation and structuring of datasets for experimentation, analysis, and model-related workflows.Enhance the availability and usability of analytical data assets.Help bridge the gap between fundamental data engineering work and the practical analytical needs of the science team.Cross-functional CollaborationPartner with stakeholders across the Data Engineering and Data Science teams.Function within a high-performance culture that prioritizes collaboration and innovation.

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.

Role overview The Lead Cloud Solution Engineer - Network at ifs1 plays a central part in shaping cloud networking solutions from the Colombo office. This position centers on designing and implementing cloud-based networks tailored to client specifications. Key responsibilities Guide and support a team of engineers working on cloud networking initiatives. Design, build, and deliver network solutions in the cloud that are both scalable and secure. Align each solution with client requirements and the company’s technical standards. Take part in the ongoing development of cloud technologies at ifs1.

About GapstarsGapstars collaborates with some of Europe’s most innovative tech companies, ranging from disruptive startups to rapidly scaling scaleups, to help them build high-performing remote engineering teams.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a team of over 275 engineers who are passionate about tackling real-world challenges using cutting-edge technologies. Our teams are engaged across various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that drive impactful results.If you are seeking a workplace that embodies technical excellence, a vibrant culture, and ample growth opportunities, look no further than Gapstars.About the RoleWe are on the lookout for a Senior Generative AI / LLM Developer to act as a strategic technical lead within our Colombo Hub. Your primary responsibility will be to drive the technical evolution of our AI suite, particularly by leading the migration of existing n8n workflows into scalable, agentic code using Python and TypeScript, ensuring the long-term resilience of our products.Core ResponsibilitiesTechnical Advisory: Offer constructive feedback and consultation to the AI Product Owner regarding architecture and feasibility.Workflow Evolution: Spearhead the transition from low-code automation to robust, code-based AI agents to facilitate scaling.Product Development: Create and maintain the technical foundation for customer-facing applications requiring AI automation through Bedrock.Platform Management: Design and oversee infrastructure and pipelines for reliable data processing and storage of insights.

We are seeking a highly skilled and innovative Principal Platform Engineer specializing in Authentication Solutions to join our dynamic team at IFS. In this pivotal role, you will lead the design and implementation of cutting-edge authentication systems that enhance security and user experience across our platforms.Your ability to collaborate closely with cross-functional teams will be essential as you develop scalable solutions that meet the needs of our clients. We value creativity, technical excellence, and a commitment to delivering high-quality products.

Join our dynamic team at IFS as a Principal Platform Engineer - Base Technologies. In this pivotal role, you will leverage your extensive expertise in platform engineering to design, develop, and enhance our core technological frameworks. Collaborate with cross-functional teams to drive innovation and optimize the performance of our platform, ensuring it meets the needs of our global customers.

Join our dynamic team at WNS Global Services as a Lead Associate in Operations! In this pivotal role, you will oversee operational processes, implement strategies to enhance efficiency, and contribute to our commitment to excellence.

We are seeking a highly skilled and motivated Application Security Engineer to join our dynamic team at IFS. In this role, you will be responsible for ensuring the security of our applications by identifying vulnerabilities and implementing robust security measures. You will work collaboratively with development teams to enhance the security posture of our software products, performing security assessments and providing guidance on best practices.

The RoleWe are seeking a talented and experienced Technical Customer Support Engineer with a solid software background who is passionate about addressing intricate challenges for our enterprise clients. As the first line of technical support for Idhammar’s suite of products, you will be responsible for triaging, troubleshooting, and resolving issues across various layers including applications, databases, integrations, networking, and cloud infrastructure.Key ResponsibilitiesManage customer cases from the moment they are received until resolution, utilizing Jira Service Management (or a similar tool) to consistently meet and surpass Service Level Agreements (SLAs).Diagnose and troubleshoot application, integration, and network-related issues across web, mobile, and API services; reproduce defects, identify root causes, and provide solutions or high-quality escalations.Conduct in-depth database investigations with SQL Server/PostgreSQL, analyzing slow queries, locks, deadlocks, and index usage while crafting optimized SQL queries to resolve performance issues.Support and maintain multi-cloud environments (Azure, AWS, IONOS Cloud), reviewing logs and metrics, scaling resources, and managing compute, storage, and networking aspects.Oversee identity and access management (IAM/Entra ID roles & policies), certificates, and secrets.Coordinate patching and maintenance windows effectively.Diagnose and resolve networking and connectivity issues across TCP/IP, DNS, VPN, TLS/SSL, and HTTP/HTTPS, as well as firewall and security group configurations.Resolve connectivity and data integration problems involving ERP, SCADA, IoT, OPC UA, REST/gRPC, and file-based ETL in collaboration with vendors and customer IT teams.Perform proactive health checks, patching, and minor hotfix deployments, while contributing to playbooks and runbooks.Communicate effectively with both technical and non-technical stakeholders, providing updates on incidents and delivering post-incident reports.Create and enhance knowledge base articles, customer guides, and internal troubleshooting documentation.Collaborate with Product and Engineering teams on bug triage, feature feedback, and reliability enhancements.Typical Challenges You Will EncounterAddressing query timeouts and blocking chains; designing and adjusting indexes and query plans.Resolving data ingestion failures (CSV/ETL/API), schema changes, and referential integrity issues.Tackling API authentication/authorization issues (OAuth2/OIDC), including certificate or token expirations.Handling application performance regressions after upgrades; conducting log analysis and implementing rollbacks or mitigations as necessary.Performing network troubleshooting for packet loss, TLS handshake errors, DNS resolution failures, and VPN/firewall misconfigurations.Managing cloud environment alarms (CPU/IO, storage thresholds, scaling, networking) and addressing unexpected cost spikes.

Join Gapstars as a Lead Accounts Payable SpecialistAt Gapstars, we pride ourselves on being a premier software development services provider based in the Netherlands, with dynamic remote teams in Sri Lanka and Portugal. Our team of over 300 innovative tech professionals is committed to delivering scalable software solutions that drive performance and define the future of technology. We partner with ambitious tech companies eager to make their mark in the industry.Role OverviewThis position transcends traditional purchase ledger management; it focuses on rethinking transactional finance operations throughout the procure-to-pay cycle. As the Lead Accounts Payable Specialist, you will spearhead the transformation of Purchase Ledger operations, evolving back-office functions into strategic, customer-centric services that enhance business insights and operational excellence.Your main objectives will include documenting, analyzing, and continuously improving all purchase ledger processes, emphasizing automation, enhancing internal customer satisfaction, and ensuring data integrity. This role demands a strategic mindset combined with a hands-on approach to operational intricacies, as you will build and lead a high-performing team to consolidate purchase ledger operations across multiple group entities into cohesive, efficient processes.

Join our dynamic team at Dijital Team Pty Ltd as a Tech Lead for HubSpot Implementation. In this role, you will spearhead the technical aspects of implementing HubSpot solutions for our diverse client base, ensuring that they receive the highest level of service and integration.

Join our dynamic team as an Associate Quality Assurance Engineer, where you will play a crucial role in ensuring our software products align with business requirements and standards. You will design, develop, and implement quality assurance testing methodologies while collaborating with clients to enhance our quality assurance processes for various projects and products.At dottsnpixels, a proud subsidiary of AMDT School of Creativity, you will be part of a creative and technology-driven environment where innovation thrives. Our mission is to create impactful ideas and experiences that enrich people's lives.