Senior Full-Stack Developer (Angular + Node.js)

About FlosumFlosum is a successful, self-sustaining B2B SaaS organization that has developed a premier Salesforce-native DevSecOps, Data Protection, and Security platform. Our solutions are utilized by Fortune 500 companies across some of the most highly regulated sectors globally, including financial services, healthcare, government, and insurance.Unlike many startups, we have achieved profitability through our own efforts, establishing ourselves as a credible player in enterprise software. As a Salesforce Summit Partner and recipient of the Innovation Award, we are proud to stand alongside industry leaders.Our platform is built entirely on Salesforce, catering to enterprises that prioritize security, compliance, and reliability.Role OverviewWe are in a rapid expansion phase, enhancing our product offerings, improving platform capabilities, and increasing our delivery speed. We seek seasoned Node.js developers who can take ownership of substantial components of our architecture and deliver production-quality code that our enterprise customers rely on daily.This is not a mere augmentation role. You will collaborate closely with engineering leaders, product managers, and the CEO, ensuring your decisions impact the product significantly, your insights are valued, and your craftsmanship is evident to the customers who depend on our platform.Your ContributionsCreate high-performance backend services and APIs that drive enterprise-level SaaS applicationsDevelop scalable, secure Node.js microservices and integrations within the Salesforce ecosystemDesign modern front-end experiences with Vue.js and TypeScript tailored for demanding enterprise usersEstablish CI/CD pipeline tools, automation frameworks, and developer productivity infrastructureImplement real-time data processing and event-driven architectures for handling sensitive enterprise data on a large scale

Join Our Team!At Xebia, we cultivate expertise and innovation. For nearly two decades, we've been delivering cutting-edge digital solutions to clients across various industries around the globe, partnering with renowned brands like UPS, McLaren, Aviva, Deloitte, and many more.Our passion lies in Cloud technologies. We proudly partner with the leading Cloud providers, including Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP), and were the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we became part of the Xebia Group in 2021, a network of companies committed to transforming the technology landscape.Xebia epitomizes innovation, a talented workforce, and technical excellence, offering us the chance to work on groundbreaking global projects.Our mission is succinct: to be recognized as the authority in our domain.What sets us apart? It's our attention to detail, commitment to knowledge, and belief in people’s potential, fostering the growth of every team member. To truly appreciate our culture and values, we invite you to visit us!Now that we've shared our story, we look forward to learning about you.Send us your resume and start the journey with #Xebia!Your Role:Design, develop, and maintain scalable backend services and APIs using Node.js and TypeScript, ensuring optimal performance and reliability.Architect and implement RESTful and/or GraphQL APIs along with microservices-based solutions to address complex business needs.Collaborate with cross-functional teams to define technical solutions, enhance system architecture, and uphold engineering best practices.Optimize database schemas and queries, ensuring data integrity, security, and performance across both relational and non-relational databases.Support DevOps and cloud initiatives by engaging with CI/CD pipelines, containerization, monitoring, and cloud infrastructure, ensuring seamless deployments and system observability.

Join Oversee as we revolutionize corporate travel management.Our innovative technology and machine learning solutions are designed to replace inefficient manual processes, unlocking significant cost savings, enhancing operational efficiency, and enabling smarter decision-making.We combine travel analytics with actionable insights, providing global enterprises with a comprehensive view of their expenditures and the tools necessary to continuously refine their travel programs.If you thrive in a dynamic, fast-paced, and supportive environment — and are eager to tackle a $17 billion global challenge — Oversee is the perfect place for you to innovate, grow, and make a difference.Our rapid growth is marked by exponential year-over-year revenue increases and partnerships with some of the world’s largest Fortune 500 companies.Your Role:Be an integral part of our product data development journey;Design, construct, and manage BI solutions that facilitate decision-making across Oversee;Take ownership of segments of our data warehouse, from architectural planning to hands-on implementation;Collaborate closely with product and business teams to understand their needs, propose solutions, and execute them from start to finish;Create dashboards and reports using Power BI that effectively communicate data-driven stories and prompt actionable insights.About You:5+ years of experience as a BI/Data Developer or in a similar capacity;Proficient in SQL with a strong analytical mindset;At least 2 years of experience in constructing Power BI dashboards (beyond mere consumption);A keen eye for UI/UX and effective data presentation;Familiarity with data quality best practices and methodologies;Knowledge of ETL/ELT and data warehousing concepts (with a desire to deepen your expertise);Comfortable with version control and deployment processes.Preferred Qualifications:A degree in Computer Science, Mathematics, Statistics, Industrial Engineering, or a related analytical field;Hands-on experience with Snowflake or dbt;Experience with Power BI embedded;Proficiency in Python for BI/ETL tasks;Strong UI/UX design sense for dashboards.Our Technology Stack Includes:Data Warehouse: Snowflake, dbt;Analytics & Visualization: Power BI;Programming Languages: SQL, Python;Data Orchestration: ...

Join Our Team!At Xebia, we are dedicated to fostering a culture of innovation and professional growth. For over 19 years, we have been delivering cutting-edge digital solutions to clients in various industries around the globe. Notable brands such as UPS, McLaren, Aviva, and Deloitte trust us with their digital transformation journeys.Our enthusiasm for Cloud-based solutions is unparalleled, driven by our partnerships with leading Cloud providers including Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). We proudly became the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we joined the Xebia Group in 2021, aligning with a network of companies committed to making a significant impact in the tech world.Xebia embodies innovation and technological excellence, with a mission to be recognized as the authority in our domain. Our commitment to detail, knowledge sharing, and nurturing individual potential sets us apart.We are eager to learn more about you!Send us your resume to initiate a conversation and become a part of the #Xebia community!Your Responsibilities:Design, develop, and maintain scalable backend services and APIs utilizing Node.js and TypeScript, ensuring exceptional performance and reliability.Architect and implement RESTful and/or GraphQL APIs and microservices-based solutions to meet complex business requirements.Collaborate with cross-functional teams to define technical solutions, enhance system architecture, and advocate for engineering best practices.Optimize database schemas and queries, guaranteeing data integrity, security, and performance across both relational and non-relational databases.Support DevOps and cloud initiatives through engagement with CI/CD pipelines, containerization, monitoring, and cloud infrastructure, facilitating smooth deployments and system observability.

Hello! We are Bee Talents, an IT recruitment agency dedicated to assisting clients globally in establishing their technical teams since 2015. Currently, we invite you to join the recruitment process for Reef Technologies.About Reef Technologies:We are a fully remote team of senior Python backend engineers with over 5 years of experience.Our focus is on building complex distributed systems, ensuring low latency, fault tolerance, high scalability, and self-healing capabilities. We also develop APIs, databases, and libraries, diving into custom algorithm design as needed.Over the long term, we collaborate with startups globally, working on projects that range from one-off tasks to multi-year partnerships. Highlights of our work include a financial data warehouse for a London fintech, a graph search system for Norwegian auditors, and a scalable WAF for a client in Chicago.Beyond our technical endeavors, we actively shape Reef Technologies to be a desirable workplace. We co-create company policies using Sociocracy 3.0, a framework that ensures every voice is valued and rules are collaboratively established.Our primary objective at Reef Technologies is to accomplish tasks efficiently and effectively. We offer competitive rates and significant flexibility, expecting everyone to take accountability for their work and deliver promptly. We do not tolerate unresponsiveness.To ensure the best fit, we prioritize matching team members with suitable projects. You'll have substantial input in shaping your career path within the organization.Typically, we work between 30–40 hours a week, with ample flexibility in our schedules. Our team is globally distributed, with many of us working from Poland.

Join MyDr, a pioneering team of technology enthusiasts dedicated to revolutionizing the healthcare sector. We develop sophisticated software solutions for Electronic Medical Documentation and holistic clinic management, bringing the Polish healthcare system into the modern age for both practitioners and patients.Our flagship solution, MyDr EDM, is trusted by over 10,000 clinics, including those partnering with the National Health Fund (NFZ). It delivers a comprehensive suite of functionalities that enhances daily operations in medical facilities—from advanced scheduling and essential appointment tools (e-prescriptions, e-referrals, and e-sick leaves) to cutting-edge telemedicine solutions and seamless integration with the government P1 Platform.Additionally, we proudly offer dr100, a specialized program tailored for dental practices, featuring unique tools such as interactive dental diagrams and dedicated modules for periodontal, prosthetic, and orthodontic needs.Since our founding in 2017, MyDr has established itself as a leader in cloud-based EDM solutions within Poland's medical software market, consistently innovating to meet the evolving needs of healthcare providers.

Join Our Innovative Team!About XebiaXebia is a leading global technology company that began its journey in Central and Eastern Europe with two prominent Polish firms—PGS Software and GetInData. With a growing team of over 1,000 skilled professionals, we specialize in delivering exceptional cloud, data, and software solutions. Our mission is to empower businesses across various sectors, including fintech, e-commerce, aviation, and logistics, to build scalable platforms and advanced AI solutions.Our ImpactWe take pride in collaborating with industry giants like McLaren, Deloitte, and Spotify. Our commitment to innovation has made us trusted partners of cloud leaders such as AWS, Azure, and GCP. Fun fact: we were the first AWS Premier Partner in Poland!Our CultureAt Xebia, we foster a vibrant community that values growth and knowledge sharing. We organize tech meetups and support continuous development through Guilds, Labs, and personal learning budgets, making it a place where you can thrive.Your RoleCollaborate with a dynamic team throughout the entire software development lifecycle.Write clean, efficient, and testable code by employing design patterns and best practices.Develop scalable Perl applications with a focus on maintainability.Utilize modern web-based MVC frameworks like Mojolicious, Dancer, or Catalyst.Manage version control using GIT.Implement unit and integration testing to ensure software reliability.Design system architecture with a strong understanding of OOP, MVC, and JSON/XML APIs.Work with relational databases and ORM for data management.Support CI/CD processes using tools like CircleCI or Jenkins.

Jobgether is hiring a Senior Node.js Backend Developer in Poland for a partner company. This role joins an experienced engineering team focused on building secure, scalable backend systems that power digital financial services worldwide. Key Responsibilities Design and develop backend solutions with Node.js for global financial products Build and maintain mission-critical services and APIs supporting real-time transactions Architect infrastructure for distributed systems to ensure reliability Optimize backend performance while maintaining strong security standards Collaborate with engineers across different regions Contribute to advancing next-generation financial technology Requirements Proven experience in backend architecture and distributed systems Advanced skills in Node.js development Ability to tackle complex technical challenges Interest in scaling secure, real-time applications Self-motivated and comfortable working with autonomy in a remote-first environment Located in Poland Work Environment This is a remote-first position. The team emphasizes independence, responsibility, and continuous learning. Senior Node.js Backend Developers here work closely with talented colleagues and play a direct role in shaping products used by customers around the world.

We are seeking a highly skilled Senior AI-Enabled Architect with over 7 years of experience to join our dynamic team at Altoros. In this pivotal role, you will analyze intricate project scopes, explore realistic optimization opportunities through AI-driven development practices utilizing a multi-agent approach, and actively contribute to technical implementation when necessary.This position encompasses two primary dimensions:Acting as a hands-on architect capable of deconstructing complex requirements, designing resilient backend architectures, and participating directly in the implementation process.Leveraging structured, practical experience in AI-first application development—creating effective workflows around LLM-based tools to enhance delivery efficiency safely.The core focus of this role is to drive project-level impact: assessing new opportunities (particularly those involving extensive integrations or high complexity), identifying secure optimization strategies, and, as required, leading or contributing to the execution of those solutions.This is a hands-on, execution-oriented technical position for someone who has effectively applied AI-first development practices in real-world production environments and possesses a solid business understanding of software development projects.

Join Our Team!Xebia is a renowned tech innovator where professionals thrive. For nearly two decades, we have been creating cutting-edge digital solutions for a diverse range of clients worldwide, including industry giants like UPS, McLaren, Aviva, and Deloitte.Our passion lies in Cloud technologies, underscored by partnerships with leading Cloud providers such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). Notably, we were the first AWS Premier Consulting Partner in Poland.Previously known as PGS Software, we became part of the Xebia Group in 2021, a collection of companies committed to making a significant impact in technology.Xebia embodies innovation, a talented workforce, and technological mastery, allowing us to work on groundbreaking global projects. Our mission can be summed up in one word: Authority. We aspire to be acknowledged as the preeminent authority in our domain.What sets us apart? It's our attention to detail, commitment to knowledge, and belief in individual potential—fostering the growth of every team member. We invite you to come and see the difference for yourself!We look forward to learning more about you. Send us your resume and let's begin the conversation!

Highlights Location: Fully Remote (CET hours preferred) Compensation: €5,100 - €6,300 per month + stock options Language: Russian-speaking team About Fundraise Up At Fundraise Up, we are revolutionizing the way nonprofits receive donations. Our innovative platform facilitates a fast, seamless, and user-friendly donation experience, empowering organizations to harness the power of generosity. Our technology processes tens of millions of dollars in donations monthly, focusing on enhancements that lead to faster load times, higher conversion rates, and accessible design. Trusted by renowned nonprofits like UNICEF and the Alzheimer’s Association, and with a stellar 4.9/5 rating on leading software review platforms, our product is recognized for both its effectiveness and quality. A Truly Global Product We serve nonprofit organizations across North America, the UK, Australia, and Europe in the enterprise sector. Our robust product ecosystem includes a modern checkout experience, customizable widgets, donor and organization portals, admin tools, and multiple internal applications. Our backend technology stack features Node.js (Koa, NestJS) and MongoDB. The frontend utilizes Webpack, Vue.js, and React, with a significant portion of the codebase written in TypeScript. For high-volume messaging and background processing, we implement Kafka and Bull (Redis). Analytics are managed through ClickHouse, while Elasticsearch is utilized for search functionalities. The Team We are a diverse team of over 160 professionals, including more than 80 engineers, distributed across Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus. Our team members typically possess 5-10+ years of experience, fostering a culture of technical curiosity and knowledge sharing. Despite our size, we maintain a close-knit team environment where every contribution is valued, and collaboration is key. We prioritize strong engineering practices and a product-first mindset, hosting biweekly engineering forums to share insights and celebrate achievements. Join a team where quality, mentorship, and mutual respect are at the forefront. About the Role As a Backend Developer, you will be instrumental in architecting the core engine that drives our global platform. You will tackle complex challenges within a high-load, distributed system, constructing and scaling the infrastructure that processes millions in donations. This role goes beyond maintenance; it involves active development and innovation.

Join Attio: Pioneering the Future of CRM in the AI EraAt Attio, we are on a transformative mission to revolutionize Customer Relationship Management (CRM) for the age of artificial intelligence. Our goal is to create the first AI-native CRM solution tailored for the most ambitious go-to-market teams. Recently, we secured a $52M Series B funding led by GV (Google Ventures), alongside support from Redpoint, Balderton, Point Nine, and 01A. Our passionate team is dedicated to overcoming complex technical challenges, delighting users, and setting new industry benchmarks.About the RoleOur Engineering team is focused on tackling the most challenging problems so our users can thrive. We build real-time infrastructure, AI-native architecture, and a seamless frontend experience, all powered by a team that operates swiftly, thinks critically, and maintains exceptionally high standards for quality.We are seeking a Senior Product Engineer who is passionate about pushing boundaries, meticulous about details, and eager to help reshape how millions of individuals work.

Join Turnitin as a Senior Fullstack/Backend Software Engineer, where your expertise in backend development, particularly with Java and serverless architectures, will be pivotal. We are seeking engineers who are enthusiastic about creating scalable distributed systems and delivering robust software solutions for our acclaimed educational platform.As an integral member of our shared services team, you'll spearhead the development and enhancement of the core systems supporting both our existing and upcoming applications.Key Responsibilities:Architect, develop, and optimize scalable backend services utilizing Java and serverless technologies (AWS Lambda).Design and implement RESTful APIs and event-driven architectures.Contribute to frontend component development as required.Enhance performance and cost-effectiveness of existing services.Collaborate with cross-functional teams, including Architects, Product Managers, and engineering leads, to deliver innovative solutions.Mentor junior developers and promote best practices.Establish and manage CI/CD pipelines.Maintain high-quality coding standards through peer reviews, automated testing, and compliance with development best practices.Document shared components comprehensively, providing usage guidelines and examples.

About Sezzle: At Sezzle, we are dedicated to empowering the next generation financially. Our innovative approach is redefining the shopping experience by combining state-of-the-art technology with flexible, interest-free installment plans, making shopping more intelligent and accessible. We are not only changing the payment landscape but are also transforming how customers discover, engage with, and acquire their favorite products, significantly boosting merchant sales through enhanced conversions and elevated order values. Join us in shaping the future of fintech and retail as we build a forward-thinking team that is passionate about creating a unique shopping experience rather than just a transaction. If you are eager to break new ground in technology and provide a transformative experience for both consumers and merchants, we invite you to be part of Sezzle's journey in revolutionizing shopping! About the Role: We are on the lookout for a highly skilled and driven Senior Software Engineer who embodies both intelligence and emotional insight. This role offers an exhilarating chance to excel in a fast-paced environment within a rapidly expanding team, with extensive opportunities for career progression.As a Senior Software Engineer at Sezzle, you will collaborate with a motivated team to solve engaging and complex challenges across various organizational domains. Your expertise will not only propel your own growth but also elevate the skills of your colleagues. In this backend-centric position, you will closely interact with stakeholders from Product, Support, and the broader business. Additionally, you will collaborate with other engineering teams to deliver high-quality, scalable, and innovative solutions that address both internal and customer challenges. Daily tasks will include designing, developing, and deploying new features, as well as mentoring and unblocking your teammates. Your contributions will have a profound impact on the daily operations of your peers at Sezzle, enhancing their capacity to support our business and customers, while also allowing for iterative feedback and improvement. Interview Process At Sezzle, we prioritize transparency. We regularly provide feedback and set expectations throughout our interview process, as we believe this is essential to our culture. Progression through each stage is not guaranteed.

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.

Join Booksy and become part of a dynamic global team dedicated to helping individuals feel their best every day. We support entrepreneurs in building successful businesses while enabling their clients to carve out meaningful moments for themselves. Our mission revolves around fostering growth and well-being.If you thrive in a fast-paced scale-up environment characterized by some chaos and limited resources, we might be the perfect fit for you. While we may not suit those who prefer clear career paths and ready-made solutions, if you value creativity, flexibility, and the opportunity to make a real impact, you'll love working at Booksy!In the role of Sales Development Representative (m/f/d) within our Sales Development team, your primary goal will be to initiate conversations with potential clients via phone and social media, ushering them into the world of Booksy and arranging product presentations with the sales department. You will collaborate with passionate team members, work on significant projects, and make a tangible difference in our users' experiences and our business outcomes.Your Responsibilities:Proactively reach out to potential clients through calls and social media (working with cold leads)Manage the company’s Facebook accountShowcase our application and actively encourage potential clients to test itExplore new distribution channelsEngage in daily cooperation with the sales departmentRespond to customer inquiriesMaintain contact with existing Booksy clients to offer and upsell additional features and services

Join our dynamic team at Lingarogroup as a Backend Developer! In this role, you will be responsible for designing, implementing, and maintaining server-side applications and databases, ensuring high performance and responsiveness to requests from the front-end. You will work closely with front-end developers to integrate user-facing elements with server-side logic.We are looking for someone who possesses a strong understanding of backend technologies, is highly motivated, and thrives in a collaborative environment.

Join Lingarogroup as a Mendix Developer and be at the forefront of low-code development! We are looking for a passionate and skilled developer to help us create innovative applications that enhance business processes. Your expertise in Mendix will enable you to design, develop, and deploy applications that solve real-world problems.

Job Overview Join Our Team We are seeking an experienced Senior Backend Engineer (Go) to join Inflect as a contractor within our Engineering team in Poland. This role offers you the opportunity to take significant technical ownership of essential backend services in a hands-on, execution-driven capacity. If you have a passion for building, scaling, and enhancing production systems that drive business success, we'd love to hear from you! This position is ideal for a senior engineer at either a senior or early staff level, showcasing strong technical ownership and a high degree of autonomy. As part of our tight-knit, senior engineering team, you will enjoy substantial ownership and autonomy, making a direct impact on our product. You will have a concrete influence over backend architecture, technical direction, and tooling decisions while maintaining alignment with product and business objectives. This position does not include people management responsibilities or legacy system ownership; it is solely focused on developing, scaling, and enhancing modern backend services. About Inflect Inflect is at the forefront of building and operating an innovative IT infrastructure marketplace, seamlessly connecting buyers and service providers through a single, product-driven platform. We are not just a software house or agency. We navigate complex marketplace workflows at the intersection of cloud infrastructure, network services, and large-scale computing (CPU/GPU). Our marketplace integrates directly with service providers, allowing buyers to discover, compare, and transact infrastructure services effortlessly. Our engineering culture prioritizes pragmatism, ownership, and rapid feedback, focusing on delivering tangible business value rather than adhering to rigid processes or excessive formalities. Work Environment Standard working hours align with the Polish (CET) time zone, with regular collaboration with engineers and stakeholders based in the United States. We prefer a hybrid work model, with 1–2 days in our Warsaw office each week. Daily communication in English with US-based engineers and partners. Close collaboration with Product, Backend, and Infrastructure-focused teammates. Your Responsibilities Assume technical ownership of critical backend services that power Inflect’s marketplace and service provider integrations. Design, implement, and scale backend systems that support the onboarding and integration of new service provider groups. Collaborate closely with Product and Engineering leadership to translate marketplace and integration requirements into practical, production-ready technical solutions. Engage in ongoing evaluation and improvement of backend systems to enhance performance and reliability.