Backend Product Engineer

Lovable serves over 2 million users worldwide, helping people build software using clear, direct language. The team seeks an AI Research Engineer specializing in post-training processes to strengthen one of the market’s fastest-growing AI products. Role overview This position focuses on the post-training pipeline for Lovable’s AI models. The work blends hands-on model training, production infrastructure, and rapid deployment of optimized models. The team values speed and expects research to become working features in days or weeks, not months. Balancing research with real-world deployment is key. What you will do Oversee the complete post-training pipeline for AI models Apply recent research to practical training methods and workflows Deploy optimized models quickly to improve user engagement Work directly with both model training and production infrastructure Deliver results that impact users and product quality Team and culture The Stockholm-based team is small, skilled, and values ownership, speed, and collaboration. Lovable’s platform supports everyone from solo founders to global enterprises, enabling rapid transformation of ideas into products. Users span more than 200 countries. Location This role is based in Stockholm.

Join our innovative AI training initiative as a Native Swedish Speaker. This role is crucial for enhancing AI models through data annotation and language processing tasks. We seek individuals who are fluent in Swedish, possess excellent communication skills, and have a keen eye for detail.As part of our team, you will contribute to the development of cutting-edge AI technology that aims to improve user experiences across various platforms.

Lifted An Upwork Company seeks native Finnish speakers to participate in an AI training project in Stockholm. This project aims to strengthen artificial intelligence by collecting real feedback and language data from fluent Finnish speakers. Role overview Participants will share their insights on AI-generated content and provide data to help refine language technologies. The work centers on evaluating outputs and offering thoughtful, clear feedback that supports ongoing development. What you will do Review and assess content produced by AI systems Share feedback to guide improvements in language models Contribute Finnish language data for training purposes Requirements Native proficiency in Finnish Strong, clear communication skills Interest in language and technology Location This project takes place in Stockholm.

Join Eurofins Scientific, a global leader in laboratory services, as a Research Scientist in our Stockholm facility. In this pivotal role, you will conduct innovative research and contribute to groundbreaking projects in the Testing & Laboratory department. Your expertise will help in delivering high-quality scientific solutions and advancing our mission to improve the health and safety of our communities.

Join Us in Revolutionizing Healthcare!At Tandem Health, we are on a mission to reimagine healthcare by prioritizing clinicians. Our innovative platform, crafted by clinicians for clinicians, is built on profound insights into real-world challenges, featuring intuitive medical notes and workflows that genuinely enhance patient care.As a rapidly scaling health-tech company supported by leading investors and expanding globally, we are driven by curiosity and the urgency to make a significant impact. If you are passionate about innovation and eager to contribute to meaningful change, we want to hear from you!Role OverviewWe are seeking a skilled and enthusiastic AI Engineer to join our team, developing a state-of-the-art LLM-centric application that aims to revolutionize the healthcare experience across Europe. This role presents an exciting opportunity to blend advanced AI, user-friendly design, and real-world impact in a dynamic startup environment where innovative ideas thrive. You will collaborate with a world-class team to shape the future of healthcare delivery using robust, production-grade LLM technology.Your ResponsibilitiesDesign and develop a comprehensive, LLM-driven application, integrating an intuitive user interface with backend model systems.Monitor and enhance an existing, widely used LLM application currently in production.Rapidly iterate on features to incorporate the latest advancements in LLMs, infrastructure, and user feedback.Take full ownership of the end-to-end delivery of features and solutions, from concept to deployment.Collaborate cross-functionally with product, design, and engineering teams to achieve meaningful user outcomes.QualificationsStrong background in AI engineering, particularly with LLM-focused products.Demonstrated experience in delivering production-grade applications, preferably within fast-paced or startup environments.A proactive attitude, comfort with ambiguity, and passion for solving complex challenges.A collaborative mindset, eager to work alongside top-tier colleagues and contribute to a culture that fosters great ideas.Familiarity with our core technology stack: Python, TypeScript, React, Kubernetes.A genuine motivation to help reshape healthcare in Europe while enjoying the journey.Bonus SkillsExperience with Microsoft-based infrastructure.

Join Sopra Steria as an AI Engineer in the vibrant city of Stockholm, where you'll have the opportunity to contribute to cutting-edge projects that leverage artificial intelligence to drive innovation and efficiency. You will work closely with a talented team of engineers and data scientists to develop intelligent solutions that address complex challenges and enhance business processes.

TL;DR – Are you a passionate and inquisitive UX Researcher eager to influence the future of Lovable? Join our team to explore user behaviors, emotions, and interactions, transforming insights into product strategy. You will design comprehensive studies, evaluate concepts, and experiment with innovative AI-driven methods to gather user feedback, allowing us to innovate swiftly while maintaining quality craftsmanship.Why Choose Lovable?At Lovable, we empower individuals to create software using plain English. From solo entrepreneurs to teams in Fortune 100 companies, millions rely on Lovable to turn their raw ideas into functional products quickly. We are pioneering a shift in software development from code-centric to intelligence-driven approaches.With over 2 million users across more than 200 countries, Lovable is helping people launch businesses, automate workflows, and realize their visions. And this is only the beginning.Our compact, skilled team is committed to building a company that defines a generation, operating from Stockholm. We emphasize ownership, speed, and collaborative spirit while focusing on creating a lasting impact.What We SeekWe are on the lookout for a researcher who exemplifies a blend of curiosity and analytical rigor — someone who thrives on understanding why, explores how, and evaluates what works. You should feel at home conducting user interviews, analyzing event data, and synthesizing survey results, adeptly linking user narratives with product metrics.3–6 years of experience in UX research, human-centered design, or a related discipline.Expertise in qualitative research methods such as interviews, usability testing, and concept evaluations.Familiarity with survey design, data analysis, and behavioral data interpretation (e.g., from analytics platforms) is advantageous.Strong analytical skills to distill findings into actionable insights that guide design and product decisions.Exceptional communication and storytelling abilities to effectively present research insights to cross-functional teams.Comfort with fast-paced, iterative work environments and adaptable to changing priorities.Experience collaborating closely with designers, product managers, and data scientists.Your RoleIn a nutshell:Transform user insights into product strategies that redefine how the world builds software.Collaborate with product, design, growth, and data teams to define...

Join the Revolution in Healthcare!At Tandem Health, we are transforming the healthcare landscape by prioritizing clinicians. Our innovative platform, crafted by clinicians for clinicians, is founded on profound insights into real-world challenges and is equipped with intuitive medical notes and workflows that genuinely enhance patient care.As a rapidly growing health-tech company, supported by leading investors and expanding globally, we embody a culture of curiosity and urgency. We believe that creating something significant starts with an exceptional team. If you are driven by the desire to make an impact and foster innovation, we want to hear from you!About the RoleTandem is constructing the clinical operating system for European healthcare. As we expand across countries and health systems, agile and thorough clinical research is essential for demonstrating our impact, guiding product development, and establishing Tandem as a frontrunner in healthcare AI.We are actively seeking a Clinical Research Lead to spearhead Tandem's clinical research strategy from inception to execution. You will direct research initiatives spanning various customers and markets, design and conduct high-impact studies, and ensure Tandem remains at the cutting edge of clinical evidence generation within European healthcare. This is a hands-on leadership role for someone who flourishes in a dynamic environment, relishes the delivery of research (beyond mere planning), and desires to see their work directly influence practical clinical applications.ResponsibilitiesDevelop and implement Tandem's clinical research strategy across diverse countries and customers.Coordinate and lead clinical studies in partnership with healthcare providers, internal product teams, and external collaborators.Create robust study protocols that marry scientific integrity with operational feasibility.Oversee data analysis, interpretation, and sharing of findings.Publish high-quality research in prestigious journals and conferences in healthcare and AI.Assist regulatory, commercial, and product teams with clinical insights and evidence.Represent Tandem in scientific and clinical discussions, enhancing our reputation as a research authority.Continuously refine our research processes to enhance speed, scalability, and impact.QualificationsA medical or clinical background (MD or equivalent).A PhD is preferred.Demonstrated experience in clinical research and study design.Strong analytical skills and proficiency in data interpretation.Excellent communication skills for engaging with various stakeholders.Ability to thrive in a fast-paced, dynamic environment.

Join Us at LegoraAt Legora, we are on an ambitious journey to transform the legal landscape. Unlike traditional solutions that cater solely to lawyers, we collaborate with them to ensure our innovative tools meet their real-world needs. Our AI-driven workspace not only enhances efficiency but also empowers legal professionals to ask insightful questions and uncover new perspectives.We are pushing the limits of legal technology to make intricate processes more intelligent, quicker, and more user-friendly. Our advancements allow for rapid analysis of extensive documents and the creation of automated workflows, developed in partnership with top-tier legal firms.Trusted by firms like Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across 40 countries, we are not resting on our laurels. We prioritize fast shipping, effective iteration, and strategic scaling to ensure we remain at the forefront of the industry.Joining Legora means becoming part of a team that strives for excellence and believes in collective success. If you're passionate about leveraging technology to empower lawyers and eager to create meaningful change in a dynamic environment, we want to hear from you!Be a Part of Shaping the Future of Legal TechnologyThe RoleAre you ready to elevate your AI career? At Legora, we are committed to redefining the legal industry through advanced AI and LLM technologies. We are looking for talented software engineers to join our agile team, where you will tackle complex projects and help transform the way legal professionals operate.Note: This is a full-time, in-office role based in Stockholm, as we believe in the power of collaboration.Your Responsibilities:Design and implement end-to-end AI and LLM functionalities for our web platform.Stay updated with cutting-edge LLM features and agentic tools.Utilize technologies such as React, Node.js, AWS, Azure, and Kubernetes.Take ownership of our codebase, ensuring high-quality code, security, and rapid development.

Join our dynamic team at Devoteam as a Senior to Principal Machine Learning / AI Engineer, where your expertise in cutting-edge technology will drive innovation and excellence. You will collaborate with talented professionals to develop and implement advanced machine learning solutions that address real-world challenges.

Join Celonis, the global frontrunner in Process Intelligence technology and one of the fastest-growing SaaS companies worldwide. We recognize the immense potential to enhance productivity by embedding AI, data, and intelligence into business processes – and we need your expertise to make it happen. Are you ready to be part of this journey?Role OverviewAs a Senior Applied AI Engineer, you will collaborate directly with our key clients to grasp their objectives and challenges. Your role involves pinpointing significant AI opportunities and translating them into quantifiable business outcomes. You will leverage Celonis solutions utilizing the world's foremost Process Intelligence (PI) platform alongside leading AI and ML technology partners, including Microsoft, OpenAI, and Databricks. By integrating operational context into AI, we empower our customers to maximize the return on their AI initiatives at scale. In this role, you will prototype solutions, showcase their value to executives, and ensure successful deployment and realization of benefits, thereby expanding Celonis' presence among our clients.This role is perfect for individuals who thrive on direct customer engagement and have a knack for transforming intricate business dilemmas into actionable AI solutions. The emphasis is on problem identification, solution development, and business impact rather than solely software engineering. While prototyping AI solutions is part of the job, the overarching aim is to deliver substantial value to our clients.Key Responsibilities:Identify High-Impact AI Opportunities: Partner closely with enterprise clients to understand their strategic goals and operational hurdles, determining how AI can provide measurable business value.Design AI-Powered Solutions: Develop scalable AI solution architectures by translating complex business problems, merging the Celonis Process Intelligence platform with cutting-edge AI technologies.Prototype & Demonstrate Value: Swiftly create prototypes and proof-of-value solutions that yield tangible outcomes for business and technical stakeholders.Lead AI Innovation with Customers: Organize workshops, hackathons, and innovation sessions with clients to explore transformative AI applications in their operations.

Job ID: FEQ327R156 Role Overview Databricks is seeking a Senior Solutions Architect with deep expertise in AI and ML Engineering to join the team in Stockholm, Sweden. This specialist role serves as a key technical resource for both Databricks clients and internal Field Engineering, focusing on helping enterprise and strategic customers design scalable, production-ready machine learning and AI applications on the Databricks platform. The position involves close collaboration with Solution Architects and offers the chance to work hands-on with technologies in Generative AI, MLOps, and broader machine learning fields. There are also opportunities to mentor others and contribute to AI thought leadership within the company. What You Will Do Design and implement production-grade ML and AI solutions for clients using the Databricks platform, including agents, end-to-end ML pipelines, training and inference optimization, and integration with cloud-native services. Serve as a trusted advisor for enterprise Generative AI projects, including Retrieval-Augmented Generation (RAG) architectures, agentic systems, and natural language querying of structured data. Develop, scale, and optimize customer AI workloads, applying strong MLOps practices to support deployment across different domains. Provide advanced technical support to Solution Architects throughout the sales cycle, covering areas such as feature engineering and model monitoring, and engage with the broader ML expert community at Databricks. Collaborate with product and engineering teams to represent customer needs, help set priorities, and influence the product roadmap to support the adoption of Databricks' AI solutions.

About SanaSana is an innovative AI laboratory dedicated to creating superintelligence solutions for the workplace. We believe that organizations can achieve their goals more efficiently when teams have seamless access to knowledge, can automate repetitive tasks, and have the ability to learn anything through agentic AI. As a subsidiary of Workday, our mission is to develop AI that enhances human capabilities rather than replacing them.Our vision is realized through two flagship products: Sana Agents and Sana Learn. Sana Agents provide a streamlined interface to access all company applications, knowledge bases, and data, empowering AI agents to perform meaningful work and enabling teams to process and act on information at an unprecedented scale. Sana Learn is an AI-driven learning platform that fuses the ease of modern learning environments with intelligent features such as an AI tutor, automated content creation, and interactive applications, transforming knowledge into actionable insights.We are a team of highly skilled engineers and designers from top-tier companies like Google, Spotify, Apple, and Databricks, all driven by a passion for technical excellence and rapid innovation. Our tools already support over a million users to enhance their learning and work efficiency across hundreds of leading enterprises, and we are just getting started.About the RoleAs a Backend Engineer, you will be instrumental in building and enhancing the core services that power our agents and product features, focusing on enterprise-scale workloads, performance optimization, and sustainable architecture. You will lead the architecture and system design to ensure our platform can accommodate high data volumes, diverse entities, and meet the demands of enterprise clients.Key ResponsibilitiesDesign and decompose services and APIs for scalability and clarity.Develop eventing and queue systems for reliable, high-throughput data flows.Oversee schema evolution, migrations, query/index optimization, and caching strategies.Establish and enforce consistency models and multi-region readiness.Optimize for performance budgets and privacy/tenant isolation.Work hands-on with TypeScript/Node, Postgres, and distributed systems.Success MetricsCore services are dependable, scalable, and easily adaptable.Potential risks are identified and mitigated proactively.APIs are clear, well-documented, and facilitate seamless product experiences.

Join Sana: Pioneers of AI for WorkAt Sana, we are at the forefront of artificial intelligence, dedicated to creating solutions that empower organizations to reach their objectives more efficiently. Our mission is to enable teams to access information effortlessly, automate mundane tasks, and learn without limits through agentic AI technology. As a proud part of Workday, our focus remains on enhancing human capabilities rather than replacing them.We offer two innovative products: Sana Agents, which facilitate seamless access to corporate applications and data, allowing AI agents to perform real tasks that amplify team productivity; and Sana Learn, an AI-enhanced learning platform that merges modern simplicity with intelligent features, including an AI tutor and interactive applications, transforming knowledge into actionable insights.Our team is comprised of talented engineers and designers from top-tier companies like Google, Spotify, Apple, and Databricks, all driven by a passion for technical excellence and rapid development. Currently, our tools are utilized by over a million users across leading enterprises, and we are just getting started!Your Role: Senior Platform EngineerAs a Senior Platform Engineer, you will be responsible for the reliability, security, and scalability of Sana's platform, enhancing developer productivity. This position is ideal for engineers who excel in navigating cloud infrastructure, deployment, and tooling to facilitate team progress. Your work will encompass everything from multi-tenant scale-out to improving developer experiences, ensuring our platform is robust, secure, and enjoyable to utilize.Your ResponsibilitiesEnhance platform reliability, security, and scalabilityDesign and implement multi-tenant scaling (10-100x) and observability solutionsOversee incident response, performance analysis, and cost management initiativesDevelop and maintain CI/CD pipelines, testing infrastructure, and provisioning environmentsCollaborate with engineers across the platform to minimize obstacles and boost delivery speedIndicators of SuccessThe platform scales effortlessly with usage increases of 10-100x, supported by strong observability and incident managementSecurity and compliance are integral to our system architectureDeveloper productivity significantly improves, allowing teams to ship faster with fewer impedimentsCI/CD, testing infrastructure, and development environments are consistently reliable and efficient

Join the Sana TeamAt Sana, we are at the forefront of AI innovation, dedicated to creating superintelligence solutions that enhance workplace efficiency. Our vision is that organizations can achieve their goals more swiftly when teams are empowered to access knowledge effortlessly, automate mundane tasks, and harness the capabilities of agentic AI. As a proud part of Workday, we focus on developing AI systems that support and augment human capabilities rather than replace them.Our mission is realized through two groundbreaking products: Sana Agents and Sana Learn. Sana Agents offer a streamlined interface for accessing all company applications, knowledge, and data, allowing AI agents to perform significant tasks that enable teams to process and act on information on an unprecedented scale. Meanwhile, Sana Learn serves as a dynamic learning hub powered by AI, combining an intuitive learning platform with intelligent features such as an AI tutor, automated content creation, and interactive applications, ensuring knowledge is not just accessible but actionable.We are a highly skilled, product-driven team of engineers and designers from renowned companies including Google, Spotify, Apple, and Databricks, united by a commitment to technical excellence and rapid innovation. Our tools are already enhancing the productivity of over a million users across various leading enterprises, and we are just beginning our journey.About the RoleAs the Quality Assurance Engineer for Sana’s AI agent platform, you will play a pivotal role in ensuring that our LLM-powered products are not only robust and reliable but also user-friendly. You will be responsible for designing and implementing test strategies that match our pace of rapid development, automating essential workflows, and fostering a culture of quality throughout our engineering teams. This is a hands-on position ideal for someone who excels at creating scalable testing methods, identifying unique edge cases related to agentic and LLM systems, and establishing safeguards to prevent issues from affecting production. You will contribute to the delivery of safe, trustworthy, and enterprise-ready agent workflows in today's evolving AI landscape.Key ResponsibilitiesDesign and execute comprehensive test plans for agent infrastructure, LLM-based APIs, and user journey flows.Develop and sustain automated test suites across backend, frontend, and integration layers, including validation of prompts and responses for generative models.Create tools and frameworks to expedite testing processes and detect regressions early, particularly in areas of agent reasoning, tool usage, and context management.Work closely with engineers to integrate quality assurance into every development phase, focusing on the specific challenges posed by AI/LLM systems (e.g., non-determinism, hallucinations, safety concerns).Lead root cause analyses and drive the resolution of critical incidents and issues.

About SanaAt Sana, we are pioneering the development of superintelligent AI for the workplace. Our vision is to empower organizations to achieve their goals with greater speed and efficiency by enabling seamless access to knowledge, automating repetitive tasks, and facilitating continuous learning through advanced agentic AI. As a proud member of the Workday family, we aim to create AI technologies that enhance human capabilities rather than replace them.Our mission is realized through two innovative products: Sana Agents, which offer a streamlined interface for accessing your organization's applications, knowledge, and data, allowing AI agents to perform real work and enabling teams to manage information at an unprecedented scale; and Sana Learn, an AI-driven learning hub that merges the ease of modern educational platforms with smart features such as an AI tutor, automated content generation, and interactive applications, transforming knowledge into actionable insights.We are a dynamic, product-focused team of engineers and designers with backgrounds at leading companies such as Google, Spotify, Apple, and Databricks. United by our commitment to technical excellence and rapid innovation, our tools currently support over a million users in enhancing their learning and work processes across numerous top-tier enterprises, and our journey is just beginning.About the RoleIn this role, you will play a pivotal role in developing the foundational agent infrastructure that drives Sana's mission to integrate superintelligence into the workplace. This is a unique opportunity to shape how AI agents strategize, reason, and execute tasks in complex enterprise environments—creating systems that effectively manage real-world complexities at scale. Your work will span agent architecture, context management, tool integration, and production infrastructure.In This Role, You WillDesign multi-step planning, orchestration, and tool routing systems for agents.Develop code generation agents and implement sandboxed code execution.Engineer strategies for memory, state management, and context grounding.Optimize for latency, quality, and cost in agent execution.Create safe fallback mechanisms, ensure graceful degradation, and establish robust error handling protocols.Collaborate with platform and search teams to build reusable agent infrastructure.Set safety standards and quantifiable quality benchmarks.What Success Looks LikeAgent architectures are resilient, dependable, and enterprise-ready.Context and memory management strategies are efficient and effective.

Join Us as a Fullstack Engineer in AI Code Security! At Lovable, we are on the lookout for a passionate Fullstack Engineer who is dedicated to advancing AI code security. In this role, you will be at the forefront of designing and implementing robust static code analysis and security scanning capabilities, ensuring that Lovable remains the premier AI-powered software creation platform globally.Why Choose Lovable?Lovable empowers individuals and teams to develop software using plain English. Our platform is utilized by a diverse range of users, from solo entrepreneurs to Fortune 100 companies, allowing millions to turn their ideas into tangible products swiftly. We are spearheading a transformative shift in software development, providing you with a unique opportunity to make a significant impact in the digital landscape. With a user base exceeding 2 million across over 200 countries, our influence is vast—and we are just getting started.Based in Stockholm, we are a small yet highly skilled team committed to building a company that will define a generation. We prioritize ownership, rapid iteration, and collaborative efforts with minimal ego. We are looking for individuals who are deeply passionate about their craft, who will challenge us, and who are motivated to create lasting change.Key Qualifications3+ years of experience in code security, static analysis, or code scanning, preferably with a focus on security-centric products (SAST, linters, vulnerability scanners, or similar utilizing AI or sophisticated machine learning techniques).5+ years of full-stack engineering experience delivering high-quality software products.Expertise in modern frontend technologies (React/TypeScript) and backend programming (Golang, Rust).Comprehensive understanding of system design, performance trade-offs, and scalable architectures.Strong product insight with the ability to convert security insights into user-friendly and actionable experiences.Bonus: A Master’s or PhD in code analysis, static analysis, or a related discipline. Experience in integrating AI/LLMs into security tools. Knowledge of mobile application security scanning.Your ResponsibilitiesDevelop our code scanning engine: Architect and execute static analysis and security scans that identify issues within user-generated application code for both web and mobile platforms.Deliver features end-to-end, spanning frontend, backend, and infrastructure alongside a compact, autonomous team (≤3 engineers).Incorporate AI/LLM functionalities into security workflows to detect, elucidate, and resolve vulnerabilities.Promote secure coding practices, perform security-focused code reviews, and elevate standards across the engineering organization.Shape our technical trajectory and product roadmaps.

Join neko-health as a Quality Management System (QMS) Training Coordinator where you will play a critical role in enhancing our training programs. As part of our team, you will ensure that our staff is well-versed in quality management practices, contributing to our commitment to excellence in healthcare.

Join Mistral as an AI Deployment Strategist in Stockholm, where you will play a pivotal role in integrating artificial intelligence solutions into various business operations. Your expertise will help organizations harness the power of AI to drive efficiency and innovation.