Senior Machine Learning Platform Engineer

Docplanner has spent over ten years reimagining how people experience healthcare. The company began by questioning whether patients truly sat at the center of care, and has since helped millions share reviews about their medical visits. Alongside this, Docplanner has introduced digital tools that make appointment management easier for doctors. The goal remains clear: make healthcare more human and accessible. Today, Docplanner operates in 13 countries and supports over 90 million patients each month. More than 300,000 healthcare professionals use the platform. Backing from investors like Point Nine Capital, Goldman Sachs Asset Management, and One Peak Partners has fueled steady growth. The team now includes over 2,500 employees, yet still values the entrepreneurial spirit that shaped its early years. Tech at Docplanner The Docplanner Tech team brings together more than 400 engineers, data scientists, and product experts. Many have built long careers here, contributing to a culture that values both innovation and lasting collaboration. New team members are welcomed with genuine enthusiasm. For more insights into the company’s culture, see Glassdoor reviews or watch this video. What makes work here meaningful? Projects at Docplanner have a direct impact on healthcare for millions. The company values individuality and encourages people to bring their full selves to work. Diverse perspectives are seen as essential to better solutions. The workplace supports both remote and virtual collaboration, making it easy to contribute from anywhere. Location details The Senior Platform Engineer - AI Innovations role is based in Warsaw. Remote-friendly options are available.

Join our dynamic team at docplanner as a Medical Advisor for our cutting-edge AI Innovation Project. In this role, you will leverage your medical expertise to guide the development of AI solutions that enhance healthcare delivery and patient outcomes. You will collaborate with a talented team of professionals dedicated to transforming the healthcare landscape.

Join the forefront of healthcare technology with Docplanner! You may recognize us by our previous name, Znany Lekarz. Over the past 12 years, we’ve been on a mission to revolutionize patient care in healthcare. We empower patients by providing them with tools to leave and read reviews about their medical experiences. Simultaneously, we equip healthcare professionals with technology that streamlines booking management, allowing them to focus on what they do best: caring for patients. Today, we're inviting you to be part of our journey to enhance the human aspect of healthcare.Docplanner's Global ImpactOperating in 13 countries and trusted by over 90 million patients monthly, Docplanner has become a go-to platform for more than 300,000 specialists. We are backed by reputable venture capital firms like Point Nine Capital, Goldman Sachs Asset Management, and One Peak Partners. With over 2,500 employees worldwide, we maintain the innovative spirit of a startup, even after a decade in the industry.About Docplanner TechAt Docplanner Tech, our diverse team of over 400 engineers, data analysts, and product managers is dedicated to building our products for all locations. Many of our team members have been with us for over five years, and we take pride in welcoming each new member with enthusiasm.Discover more about our workplace culture through our Glassdoor reviews or see how it feels to be your authentic self at work in this video.Why Join Us?Being part of our team means contributing to a better world, making a tangible difference. You can rest easy knowing your work aligns with your values and has a meaningful impact. We believe in embracing diversity and creating a healthcare experience that reflects the rich tapestry of human experience. With us, you can bring your whole self to work—whether that means working remotely or choosing to come into the office.

Join the Innovative World of Healthcare Technology!Are you ready to make a significant impact in the healthcare industry? At Docplanner, formerly known as Znany Lekarz, we have been revolutionizing healthcare experiences for over a decade. Our journey began with a simple question: Are patients being prioritized in healthcare? We've empowered millions by providing access to reviews and facilitating seamless booking for doctors, allowing them to focus on what matters most: patient care.Docplanner: A Global LeaderWith a presence in 13 countries and over 90 million patients relying on our services monthly, we are proud to be trusted by over 300,000 healthcare specialists. Our growth has been fueled by investment from notable venture capital firms, including Point Nine Capital and Goldman Sachs Asset Management. Despite our size of over 2,500 employees globally, we maintain the agile and innovative spirit of a startup.About Docplanner TechAt Docplanner Tech, a diverse team of over 400 professionals in Engineering, Data, and Product development is dedicated to creating technology solutions for all our locations. Our collaborative environment welcomes new talent, ensuring everyone feels valued from day one. Check out our Glassdoor reviews and see how we celebrate individuality and creativity.Why You Should Join UsWe believe in making a difference, and at Docplanner, your contributions matter. You’ll go home each day knowing you are part of a mission to enhance healthcare experiences worldwide. Embracing diversity, we encourage you to bring your true self to work—whether that means working remotely or in a collaborative virtual environment.

Join the Future of Healthcare Technology!At Docplanner, formerly known as Doctoralia, we've spent the last 12 years revolutionizing patient care. Our mission began with the simple question: Are patients at the forefront of healthcare? We took action to empower patients by providing them with the tools to share and read reviews about their healthcare experiences. Simultaneously, we developed technology that streamlines appointment management for doctors, allowing them to focus on what truly matters: providing exceptional care. Now, we invite you to be part of our journey in making healthcare more human.About DocplannerWith a presence in 13 countries, Docplanner is trusted by over 90 million patients each month and has the confidence of more than 300,000 healthcare professionals. Backed by esteemed venture capital firms such as Point Nine Capital, Goldman Sachs Asset Management, and One Peak Partners, we’ve retained our startup spirit while growing to over 2,500 employees globally.Why Join Us?Imagine sharing with your loved ones how your work contributes to a better world. At Docplanner, your efforts make a difference, and your skills align with meaningful values. We prioritize making healthcare experiences more human, embracing diversity and individuality. We celebrate your unique self and offer a fully remote working environment, allowing you to thrive in your own way.Position OverviewWe are seeking an Engineering Director to spearhead our innovative approach to product development, particularly in leveraging AI to enhance patient engagement. This role transcends traditional management; we need a leader who is deeply involved in coding and will actively pioneer AI-driven development practices. Your role will be predominantly hands-on with code (≈75%), while also driving transformation and providing technical leadership (≈25%).As a key driver of our AI-powered transformation, you will collaborate with teams and the broader Engineering community to fundamentally reshape how we develop patient-facing software. This position is ideal for individuals who excel in technical environments and can drive change through influence and example.

Docplanner is looking for a Market Launch Lead to help expand its presence in Warsaw. The role centers on introducing new services and ensuring that each market rollout matches company strategy. Collaboration with teams across the organization is a key part of making launches run smoothly. Main responsibilities Lead the introduction of new services and initiatives within the Warsaw market Work with cross-functional teams to coordinate and deliver launches Contribute to company growth by increasing market reach Make sure all launch activities support docplanner’s strategic direction Location This role is based in Warsaw.

Join our dynamic team at docplanner as a Global Web Analyst, where you will play a vital role in analyzing web traffic and user engagement across our platforms. Your insights will directly influence our marketing strategies and website optimization efforts, helping to elevate the user experience for millions of users around the globe.

About Docplanner Group Docplanner Group connects 24 million patients with more than 280,000 doctors every month across 13 countries. Through brands like ZnanyLekarz, Doctoralia, MioDottore, DoktorTakvimi, and jameda, the company offers healthcare marketplaces, SaaS solutions, and AI tools that help healthcare professionals focus on patient care. Learn more about Docplanner’s products at pro.doctoralia.es. Why Join Docplanner Meaningful work: Support doctors in delivering care to patients. Scale with agility: Join a team of over 3,000 employees that values flexibility and hands-on problem solving. Shape the future: Contribute to ongoing projects and help build foundations for long-term growth. Role Overview: HR Systems Analyst (Warsaw) The HR Systems Analyst joins the Global PX Services team (People Experience) to manage the core HRIS (Hibob). The role ensures data accuracy, efficient workflows, and compliance with statutory and internal requirements. This position supports PX teams by driving standardization, scalability, and automation across HR processes. Main Responsibilities Take ownership of the HRIS (Hibob), managing data architecture, workflows, user access, permissions, and integrations. Lead transitions to new systems as needed. Develop, implement, and improve PX Services processes with a people-first mindset, ensuring compliance and a positive employee experience. Drive automation in PX processes, including integrating and managing AI applications where appropriate. Work closely with PX teams (Business Partners, Talent Acquisition, Diversity, Solutions, and others) to improve the employee journey from onboarding to offboarding. Location This role is based in Warsaw.

Welcome to the positive side of technology! You might recognize us by our previous name: Znany Lekarz. It all began over a decade ago when we posed a crucial question: is anyone in healthcare genuinely considering the needs of patients? We took action, empowering patients with the ability to leave and read reviews about their healthcare experiences. Simultaneously, we equipped doctors with innovative tools to streamline booking management, enabling them to focus on what truly matters: patient care. Today, we invite you to join us in our mission to humanize the healthcare experience.Docplanner: A Global LeaderWe proudly operate in 13 countries, with over 90 million patients relying on our services every month. More than 300,000 specialists trust our platform, backed by leading venture capital firms like Point Nine Capital, Goldman Sachs Asset Management, and One Peak Partners. Despite employing over 2,500 individuals worldwide, we maintain the innovative spirit of a startup that we began with over a decade ago.Docplanner Tech: Shaping the FutureAt Docplanner Tech, we are a diverse team of over 400 professionals in Engineering, Data, and Product teams, dedicated to creating our product for all our locations. Many team members have been with us for over five years, and we always welcome new colleagues with warmth and enthusiasm.While we could share more about ourselves, we encourage you to check our Glassdoor reviews to hear firsthand experiences. If you want to understand what it's like to be your true self at work, watch this video.Why Join Us?It's fulfilling to share with family and friends how your work contributes to making the world a better place. You’ll rest easy knowing that your efforts matter and that your skills resonate with your values.Our goal is to enhance the healthcare experience, and this journey begins with you being authentically yourself. We believe that embracing the diversity of human experiences leads to a better healthcare journey for everyone. We don’t just acknowledge our differences; we celebrate them. We encourage you to bring your whole self to work, including the choice to work remotely, as we are fully remote-friendly.

People.ai is a cutting-edge AI-driven foundational data platform designed to empower businesses in achieving market success and growth. By delivering tailored solutions, we enhance pipeline visibility, provide actionable insights, and establish a single source of truth for all sales activities. People.ai boasts a unique dataset comprised of trillions of sales activities, millions of deals, 160 million business contacts, and holds 69 granted patents related to AI-driven business insights, differentiating us in the marketplace. Major corporations such as Verizon, Red Hat, and Palo Alto Networks trust our enterprise-ready, patented AI technology.At People.ai, we recognize the immense value that individuals bring to the world through their creativity, resourcefulness, and critical thinking. We strive to allow our team members to dedicate their time to impactful activities, thereby enhancing professional effectiveness. Our diverse and outspoken team comprises creative thinkers focused on driving transformation and growth. We celebrate diversity of thought and experience, encouraging non-traditional career paths and individuals who make processes their own.As a Senior Software Engineer within the XCore team, you will play a pivotal role in one of the most significant projects at People.ai — Forecasting. You will be responsible for developing and refining a live product that serves numerous daily users, collaborating closely with both business teams and clients through discovery and exploration calls. Your contributions will directly affect company revenue by defining and implementing features rooted in genuine customer feedback, thereby influencing how clients plan, forecast outcomes, and make critical business choices.Furthermore, you will engage in cross-functional collaboration with Engineering and R&D teams to enhance core Admin Platform services, including authentication, user management, settings, and configurations. By leveraging customer insights and data analytics, you will design and construct high-performance, low-latency systems and APIs that scale effectively while optimizing our operational costs.Ownership is a core value at People.ai, emphasizing the ability to shepherd ideas from conception to product launch. This principle resonates throughout our organization, particularly in engineering. As an engineer at People.ai, you will join a highly independent and autonomous team, contributing to the establishment of a robust data layer essential for our ongoing success.

Join Hire Hangar, a dynamic platform where you can collaborate with rapidly expanding global companies and cultivate a rewarding remote career.Position: Senior AI Platform EngineerLocation: RemoteTime Zone: Flexible, aligned with HQ time zoneRole Overview: As a Senior AI Platform Engineer, you'll play a pivotal role in integrating AI engineering with platform development. You will be responsible for the contextual intelligence layer that drives our AI agents, ensuring they comprehend, deduce, and execute tasks accurately across our SaaS framework.This position is tailored for an engineer who deeply understands context and meaning, and who is adept at creating user-friendly frontend interfaces that showcase these capabilities.

About CaptivateIQ CaptivateIQ is at the forefront of Sales Performance Management, empowering organizations to design, manage, and enhance their incentive compensation strategies. With backing from esteemed investors like Sequoia, Accel, and Y Combinator, we are expanding our capabilities from commission management to encompass sales planning and enterprise performance management, sectors that are primed for AI-driven innovation. About the Role We are seeking a Staff Software Engineer to spearhead the technical strategy for our Agentic SDK team. This internal developer platform will enable product teams across CaptivateIQ to create AI-enhanced features that redefine sales performance management. This pivotal role involves strategic technical leadership with a multi-year and multifaceted scope. You will be tasked with defining the architecture and technical direction for AI initiatives at CaptivateIQ, navigating complex decisions, and collaborating closely with senior Engineering, Product, and Design leaders to shape our long-term vision. Your technical choices will influence the entire organization, from platform design to overarching engineering quality standards. As the technical cornerstone of a high-impact team, you will guide collaboration among product teams leveraging the Agentic SDK and the capabilities we develop. Establishing standards for engineering excellence and mentoring P4 engineers to achieve staff-level impact will be key components of your role. This position offers a unique opportunity to define AI development within a growing enterprise software environment. You will have the chance to influence not only technology but also the culture and practices that will scale with our organization.

Position: Senior Full-Stack Engineer (Data Platform & Tooling)Working Hours: 9am - 5pm Eastern Standard TimeMonthly Salary: Competitive and negotiable based on experienceJoin our dynamic team at lago-1 as a Senior Full-Stack Engineer, where you will play a pivotal role in the development of our cutting-edge data platform. As the ideal candidate, you will be instrumental in constructing reliable data pipelines from diverse external sources, collaborating closely with our talented team to deliver a solution that is not only fast and scalable but also genuinely impactful.If you thrive on the challenge of building complex products from the ground up and value the freedom of end-to-end project ownership, this opportunity is perfect for you!Key ResponsibilitiesDevelop and sustain both web and mobile iterations of the platform.Establish backend systems, APIs, and database architectures optimized for performance and scalability.Convert UI designs into responsive, high-quality implementations.Integrate with external tools and data sources.Oversee deployment, testing, and performance enhancements.Essential QualificationsMust-Have Skills:At least 5 years of experience in building production systems using Python.Expertise in SQL and database design, including schema design, query optimization, and data modeling.Proven experience with ETL and data pipelines.Strong web scraping skills, including browser automation, API reverse-engineering, anti-bot strategies, and rate limiting.Self-driven with a results-oriented mindset.Pragmatic coding approach, balancing clean code with timely deliverables.Open-mindedness and eagerness to learn new domains and adapt based on data insights.Experience working in small teams or startup environments (fewer than 20 people).Preferred QualificationsBackground in e-commerce or marketplace data (Amazon, Keepa, SP-API).Frontend skills for dashboards, internal tools, and reports.Experience with caching strategies, incremental data updates, and API token management.Familiarity with cloud deployment (AWS/GCP).A mindset focused on data validation and quality assurance.BenefitsFlexible Remote Work: Connect with a high-performing team from anywhere.Career Advancement: Enhance your skills in digital marketing and client management.Collaborative Culture: Work alongside passionate professionals who prioritize innovation and teamwork.We encourage all candidates to review and agree to Lago’s Confidentiality and Non-Circumvention Agreement, fostering a respectful and professional recruitment experience.

About CaptivateIQCaptivateIQ is at the forefront of Sales Performance Management, empowering enterprises to design, manage, and enhance their incentive compensation programs. With the support of renowned investors such as Sequoia, Accel, and Y Combinator, we are expanding our scope from commission management to encompass sales planning and enterprise performance management—fields that are primed for innovation driven by AI.About the RoleWe are on a mission to revolutionize the way enterprises handle sales performance through cutting-edge AI capabilities. We seek a talented Software Engineer to join our Agentic SDK team, an internal developer platform that empowers product teams throughout the organization to create AI-powered features.This role is foundational within a small, high-impact team. You will engage with the entire technical stack, from React and TypeScript frontends to Python backends, integrating large language model orchestration and Model Context Protocol systems. You will be responsible for shipping features end-to-end, collaborating closely with product teams to implement AI capabilities that have a direct impact on our clients.As one of five engineers pioneering AI initiatives at CaptivateIQ, you will enjoy significant ownership and influence. You will address complex, ambiguous challenges, contribute to architectural decisions, and help establish the best practices that future teams will adopt. This is a unique opportunity to shape the development of AI within a growing enterprise software company.

About Docplanner Docplanner, known in Poland as ZnanyLekarz, began 12 years ago with a simple question: is healthcare truly centered on patients? Since then, the company has built a platform where patients can share and read reviews about their healthcare experiences, while doctors benefit from tools that streamline bookings and free up more time for patient care. The mission remains clear: strengthen the human side of healthcare. Our Impact Docplanner operates in 13 countries, serving over 90 million patients each month. More than 300,000 specialists trust our products. Backing from Point Nine Capital, Goldman Sachs Asset Management, and One Peak Partners has supported our growth. With a team of over 2,500 people worldwide, Docplanner has kept its entrepreneurial drive alive for more than a decade. Inside Docplanner Tech Docplanner Tech brings together more than 400 professionals across Engineering, Data, and Product. Many team members have been with us for over five years, and we welcome new colleagues warmly. Our teams work across all locations, building and improving the product every day. Curious about our culture? See what others say on Glassdoor. For a glimpse into life at Docplanner, watch this video. Why Work With Us? At Docplanner, work has purpose. Team members know their contributions make a real difference in the world. The company’s commitment to making healthcare more human starts with a culture that values authenticity and celebrates diversity. Everyone is encouraged to bring their whole self to work. Remote work is fully supported, and the environment is designed to help people thrive as they are.

Join Attio: Pioneering CRM in the AI EraAt Attio, we are on a mission to revolutionize Customer Relationship Management (CRM) for the age of artificial intelligence. Our innovative team is crafting the first AI-native CRM, tailored specifically for the most ambitious go-to-market teams. Recently, we secured a significant $52 million Series B funding led by GV (Google Ventures), alongside contributions from Redpoint, Balderton, Point Nine, and 01A. Our dynamic team excels in tackling intricate technical challenges, enhancing user satisfaction, and establishing new industry benchmarks.About the RoleWe are in search of talented and seasoned Platform Product Engineers to join our Security, Infrastructure, and Performance team. This pivotal role merges strategic engineering with hands-on operational excellence. Successful candidates will be tasked with developing, managing, and consistently improving our internal technology platform, treating it as a product with development teams as primary stakeholders.The Platform Product Engineer role emphasizes the execution of DevOps principles, focusing on:Automation: Systematically eliminating manual processes from the software development lifecycle (SDLC) by creating robust tools, CI/CD pipelines, and infrastructure-as-code (IaC).Collaboration: Building a close partnership with product development teams to gather requirements and deliver solutions that enhance their productivity and speed to market.Continuous Improvement: Fostering a culture of iterative enhancements to improve platform reliability, cost efficiency, and developer experience.This role is grounded in a strong Site Reliability Engineering (SRE) approach. Successful candidates will play a key role in defining and maintaining Service Level Objectives (SLOs) and Service Level Indicators (SLIs), implementing effective monitoring and alerts, and leading incident response processes.Your ResponsibilitiesYour primary responsibility will be to implement, maintain, and continuously refine the foundational platform infrastructure that supports all engineering services.

Join our dynamic Product Security team as a Senior Platform Security Engineer, where your expertise will be crucial in safeguarding our platform that supports multiple products and handles sensitive, high-value information. With our operations expanding, we seek two professionals to strengthen our security efforts.Your role will involve hands-on engineering, where you will design, build, and deploy robust security and privacy controls. This is not about merely defining policies; you will actively contribute to the security architecture of our systems.Your responsibilities will include enhancing supply-chain security through SAST, SCA, container scanning, and CI/CD hardening. Expect a varied role that will challenge you across multiple domains without confining you to a single specialty.What Success Looks Like:Within 90 days, you will have implemented significant, production-level security enhancements.You will take ownership of components of the AuthN/AuthZ model and its execution.You will develop a comprehensive understanding of our data flows and associated privacy risks.Establish yourself as a trusted advisor across teams, able to confidently voice concerns and provide rationale.Effectively reduce risk through practical measures rather than superficial security actions.Your Work Style:This role offers a high degree of autonomy, encouraging you to identify and address issues independently.You will collaborate closely with engineers from different teams, fostering a culture of teamwork.Engaging in constructive disagreements is encouraged, with decisions rooted in data and threat modeling.You will have the authority to block releases on security or privacy grounds when necessary, following clear escalation paths.Proactively addressing problems, even beyond your immediate area, is expected.

QED AI is an innovative technology firm dedicated to enhancing public health and food security in Sub-Saharan Africa. By developing cutting-edge digital infrastructure and leveraging AI, we operate at the critical intersection of humanitarian aid and scientific research. Our initiatives include monitoring diseases such as HIV, malaria, and tuberculosis, as well as conducting nutrient analyses for crops and soils across various African nations. Our funding sources include prestigious philanthropic and governmental organizations such as the Global Fund, Gates Foundation, and the CDC.We are seeking a mid/senior Data Platform Engineer (Backend) to join our dynamic team in Warsaw. Ideal candidates will possess the following:Proven experience in designing and maintaining data pipelines utilizing ETL and/or ELT methodologies, with a critical eye on trade-offs rather than adhering to a single pattern.Solid understanding of data pipeline reliability, including concepts of idempotency, backfills, and the management of late or corrected data.Ability to structure data systems into distinct layers (e.g., raw, cleaned, curated) and articulate their varying functions and guarantees.Experience with making informed decisions between batch, micro-batch, and streaming methods based on latency, accuracy, and operational complexity.Strong foundation in software engineering principles, version control, writing clean code and tests, robust design, and a grasp of basic data structures and algorithms.Ability to conceptualize logical software architectures and communicate clearly, both verbally and in writing.Eagerness to engage with a diverse range of problems and technologies.Willingness to participate in regular design sessions, code reviews, and collaborate effectively within teams.Experience with UNIX-based or OSX-Darwin development environments.Working proficiency (≥C1) in English, both spoken and written (minimum typing speed of 45 words per minute).Interest in collaborating with individuals from different cultural backgrounds.Demonstrated emotional resilience and social intelligence.A genuine passion for your work and a generally optimistic outlook, while recognizing the value of constructive skepticism.Additional skills that are advantageous but not mandatory include:Understanding of analytical data modeling concepts, including hierarchical and dimensional modeling.

Altersolutions is seeking a Senior Platform Engineer (Developer Experience) to lead the establishment and standardization of engineering practices, enhance developer workflows, and define standards for CI/CD and collaboration. This role melds hands-on DevOps expertise with a strong focus on clarity, comprehensive documentation, and effective process design.The primary objective is to boost the efficiency, consistency, and scalability of our engineering organization. In this capacity, you will collaborate closely with engineering leads, product managers, and other key stakeholders to ensure our operational methods are thoroughly documented, clear, and actionable.Key ResponsibilitiesDesign, document, and maintain comprehensive software development processes, encompassing coding standards, branching strategies, testing protocols, release management, and deployment workflows.Engage with engineering managers, team leads, and product teams to gather insights and best practices, facilitating the seamless adoption of tools and methodologies.Convert intricate technical workflows into clear, concise documentation and visual aids (such as flowcharts, process maps, checklists, and templates) to enhance understanding.Assess and implement tools aimed at improving developer experiences (e.g., feature flagging, local development environments, code quality tools).Oversee a central documentation repository (e.g., Confluence, Notion, or Git-based systems), ensuring that all documentation remains current and version-controlled.