Senior React Developer - Data Visualization

At Base, our mission is to empower entrepreneurs to conquer the global e-commerce landscape. We provide technology that revolutionizes the way they sell online.Our international team, spanning from Europe to both Americas, delivers an all-in-one system for thousands of sellers. We integrate them with industry leaders such as Amazon, eBay, Shopify, DHL, and FedEx. But we are not just another tech company. We are one of the fastest-growing platforms in the industry, having grown 15-fold in the past three years! We emphasize a culture where real impact and collaboration matter, and our team is at the heart of our innovation.We are currently seeking a Full-Stack Developer to work on the Base Analytics application project, which enables our clients to monitor sales, profitability, and key business metrics.Your role will be crucial in building the frontend application in React that processes large data sets and visualizes them in the form of interactive charts, dashboards, and pivot tables. We are looking for someone who will collaborate on the project with the Lead Frontend Developer, Data Engineers, and DevOps teams operating in the AWS environment (ClickHouse, Lambda, Glue).If you are an experienced React Developer with a solid understanding of the AWS stack and want to make a real impact on product development, this role is for you!

Join base-com and be part of our mission to empower entrepreneurs to conquer the global e-commerce landscape. We provide innovative technology that transforms the way businesses sell online.Our international team operates from Europe to both Americas, delivering an all-in-one system for thousands of sellers. We integrate them with industry leaders such as Amazon, eBay, Shopify, DHL, and FedEx.We're not just another tech company; we're one of the fastest-growing platforms in the industry, having grown 15-fold in the last three years! We value a culture where real impact and collaboration matter, with our team being the heart of our innovation.Excited? If you want to make a tangible impact on global e-commerce, apply today! We are waiting for you!

Join Base – a global leader revolutionizing e-commerce!We are a technological powerhouse for sellers worldwide, providing an innovative all-in-one system. Our mission is to simplify online entrepreneurs' lives by helping them automate processes, dynamically scale their businesses, and efficiently manage sales across multiple platforms. This is all driven by our passion for innovation and the use of cutting-edge technology. We operate globally, collaborating with thousands of marketplaces and industry leaders such as Amazon, eBay, Shopify, DHL, and FedEx. Our international team of experts works across Poland, Europe, both Americas, and Asia.We are currently seeking a Strategy Manager to join our strategy team!Why is this role for you? We are not looking for a theorist. We seek a Strategy Manager who will act as our strategic radar. Someone who can transform raw market data, competitive analysis, and customer feedback into tangible actions that enhance our competitive edge.

Join Base – a global leader revolutionizing e-commerce!We are a technological powerhouse for sellers worldwide, providing an innovative all-in-one system. Our mission is to simplify the online entrepreneur's life by enabling them to automate processes, scale their businesses dynamically, and efficiently manage sales across multiple platforms. This is all fueled by our passion for innovation and the use of modern technologies. We operate globally, collaborating with thousands of marketplaces and industry leaders like Amazon, eBay, Shopify, DHL, and FedEx, while our international team of experts works across Poland, Europe, the Americas, and Asia.We are currently looking for a Strategy Manager to join our strategy team!Why is this role for you? We are not seeking a theorist. We are looking for a Strategy Manager who will act as our strategic radar, transforming raw market data, competitive analysis, and customer feedback into tangible actions that build our competitive edge.

Join a dynamic team at Quorso as a Full-Stack Developer! Founded in 2016, Quorso is revolutionizing retail management with its innovative SaaS solutions. Our Agile Stores technology transforms vast amounts of retail data into actionable insights for store managers, enhancing operational efficiency and sales performance.As a Full-Stack Developer, you will play a crucial role in expanding our platform's capabilities. You'll be involved in creating data transformation pipelines and enhancing our core application, which includes developing APIs, user interfaces, and the underlying infrastructure for core insights.Your Role:You will collaborate with a talented team of engineers to introduce new functionalities into our platform. This role presents an exciting opportunity to contribute to a system that could evolve into a comprehensive task management tool for users and managers alike.Key Responsibilities:Engage in solving business challenges by designing effective user workflows.Contribute to technical design discussions for project scope.Provide constructive feedback during visual design review sessions.Assist in detailed technical implementation planning.Develop features end-to-end, encompassing both backend and frontend using Ruby on Rails, React, and Redux frameworks, with a balanced focus on both (50/50).Essential Qualifications:Proven experience in proactive problem-solving and technical implementation planning.Background in providing feedback for visual designs and working collaboratively in technical environments.Hands-on experience with Ruby on Rails, React, and Redux is essential.

Join BLPaczka, a dedicated logistics integrator for Base platform users and beyond. We specialize in handling e-commerce shipments of various sizes, both domestically and internationally. Our partnerships with trusted providers ensure high-quality logistics services.We are on the lookout for ambitious and energetic individuals to join our team and support the dynamic growth of our brand in both the Polish and international markets.Key ResponsibilitiesDevelop and maintain systems using CakePHP, PHP 7.x, Symfony, and PHP 8.x.Design and develop REST APIs for integration with external systems (e-commerce, courier, financial).Design and optimize database structures in MySQL / Aurora (AWS).Containerize services using Docker / docker-compose.Create frontend layers (HTML5, CSS, JavaScript/jQuery) to support backend functionalities.Conduct code reviews and work with Git (branching, PRs, tagging, rebase).Collaborate with DevOps teams and product owners to plan architecture and functional roadmaps.Utilize AI tools (e.g., Claude, Codex, Copilot) for automating daily development tasks, generating code, testing, and refactoring.Proactively seek improvements using AI in development processes, error analysis, and documentation.

At Base, we are dedicated to empowering entrepreneurs to conquer the global e-commerce landscape. As one of the fastest-growing platforms in the industry, we have experienced a remarkable growth rate of 15 times in the last 3 years! We provide an all-in-one system for thousands of sellers, integrating them seamlessly with Amazon, eBay, and Shopify.However, technology alone isn’t enough. In our team, we value engineering reliability and human decency. We’re not looking for a 'Ninja' or a 'Rockstar'; we seek a Partner we can trust.Managing infrastructure that handles millions of requests is a role built on high trust. This is why we are looking for someone with a strong moral backbone.Your Technical StackWe work on a robust and efficient stack that you must know inside out:Core: Linux (Debian/Ubuntu), Nginx (deep tuning and optimization), PHP-FPMCloud: AWS (EC2, S3, RDS, VPC, Lambda, IAM)Data: MySQL, Redis, RabbitMQObservability: Datadog, ELK Stack (Elasticsearch, Kibana)IaC: Terraform / AnsibleYour ResponsibilitiesYou will manage infrastructure permissions, ensuring meticulous attention to who has access to servers and why.Implementing stable service operations in AWS cloud that can withstand our dynamic growth.Maintaining Unix/Linux servers—configuration, updates, and automation, with a full understanding of what is happening within the operating system.Responding to incidents based on deep log analysis (DD, Elastic). You will focus on Root Cause Analysis rather than simply restarting services.Supporting development teams to ensure the continuous and smooth operation of the system.What We ExpectA minimum of 4 years of experience in a DevOps/SysAdmin role, including practical experience with AWS.Strong knowledge of cloud services, complemented by classic administration experience (experience in maintaining physical servers/Data Centers is a plus).Proficiency in Linux: You should feel at home in the Terminal.Moral integrity and responsibility: Your 'Can Do' approach is combined with accountability for the 'keys to the kingdom.'Humble towards technology: You understand that everyone makes mistakes, but you know how to correct them.360-degree problem analysis: You look at issues from every angle—security, efficiency, and long-term impacts.Bridging cloud with hardware: We operate on AWS, but we seek someone who understands the physical nature of servers.Language: Proficiency in English, minimum B2 level (we operate globally).Preferred QualificationsAWS certifications that validate your knowledge.Practical experience with Terraform.Familiarity with Apache Kafka or Cloudflare.A desire to develop towards agent-based DevOps (process automation).What We OfferAn environment where we treat mistakes as learning opportunities...

Join our team at Intellectsoft as a Senior Full Stack Developer! In this role, you will work with an innovative AI-powered platform designed to enhance business decision-making and efficiency. Our platform leverages cutting-edge analytics and machine learning to process extensive datasets, offering actionable insights and forecasts that are invaluable across diverse sectors such as healthcare. By seamlessly integrating with existing infrastructures, we empower teams to make swift, data-driven choices, fostering groundbreaking solutions.

Jobgether is looking for a Senior Full-Stack Engineer with strong experience in Python and React. This position is based in Poland and centers on building solutions that support the company’s mission. Role overview This role involves working closely with other engineers and teams to deliver reliable, high-quality software. The focus is on both backend and frontend development, using Python and React as the primary technologies. Collaboration Expect to work with cross-functional groups, contributing to projects that address user needs. The team values open communication and shared problem-solving to achieve project goals. Requirements Professional experience with Python and React Ability to collaborate with diverse teams Comfortable working on both client-side and server-side code

Join our dynamic team as a Full-stack Developer, where you will play a pivotal role in integrating the Charge app within the electric vehicle ecosystem for a prestigious German automotive manufacturer. This project focuses on ensuring seamless communication between various Charge Point Operators (CPOs) and end-users, emphasizing real-time synchronization of charging station data (availability, power). Your efforts will contribute to a smooth user experience, from locating a charger to invoicing.

Join our dynamic team at Capital as a Senior Full Stack Engineer, where you will play a crucial role in developing innovative web applications using React and Node.js. You will be responsible for designing and implementing scalable solutions, collaborating with cross-functional teams, and mentoring junior developers. If you are passionate about technology and eager to make an impact, we want to hear from you!

At base-com, our mission is to empower entrepreneurs to conquer the global e-commerce landscape. We provide cutting-edge technology that revolutionizes their online selling experience.Our international team, spanning from Europe to both Americas, delivers an all-in-one system for thousands of sellers. We integrate them with industry leaders, including Amazon, eBay, Shopify, DHL, and FedEx.However, we are not just another tech company. We are one of the fastest-growing platforms in the industry – growing 15-fold in just 3 years! We prioritize a culture where real impact and collaboration matter, and our team is the heart of our innovation.If you are passionate about e-commerce, want to make a meaningful impact on the global market, and be part of this exciting journey, then this is the place for you. We are not looking for someone who simply fills vacancies. In our team, recruitment is not an administrative process – it is the engine of the entire company’s growth. By joining us, you won’t just receive “assignments.” You will have complete autonomy in managing projects for key expert and leadership roles. You will work closely with Directors and Hiring Managers, acting as their strategic advisor, genuinely influencing the structure of e-commerce.Key Responsibilities:End-to-End Ownership: Independently lead complex processes – from niche specialists to C-level roles. You take full responsibility for the outcome, not just the process.Master of Sourcing: Utilize Direct Search, Boolean, and X-ray search to reach “invisible” talents that competitors cannot find. Build strong, diversified pipelines where others see a lack of candidates.Business Partnership: Be a partner to the business. Provide market insights, challenge the status quo, and assertively guide stakeholders towards the best decisions.Candidate Experience & Employer Branding: Act as a brand ambassador. Ensure that every interaction with us – regardless of the final decision – is valuable and professional for the candidate.Data-Driven Recruitment: Manage the funnel based on solid data. Analyze KPIs and optimize workflows to make recruitment scalable and efficient.Our Expectations:Minimum of 3 years of experience in independent recruitment (preferably a mix of agency and dynamic in-house/hyper-growth environments).Sourcing Workshop: LinkedIn Recruiter is your home. You can find the “unfindable” and effectively engage passive talents.Communication and Assertiveness: You can build trust at the Executive level, but you are not afraid to defend your opinion in a demanding environment.Multitasking and Strategy: Effectively juggle priorities without losing sight of the broader business objective.Languages: Fluent Polish (C2)...

Role Overview base-com is looking for a B2B Sales Specialist in Warsaw, Masovian Voivodeship. This role focuses on building and maintaining relationships with business clients while supporting the company’s sales strategy. The B2B Sales Specialist identifies new opportunities, promotes base-com’s solutions, and works to meet sales goals. Ensuring client satisfaction is a key part of the job.

At Base, our mission is to empower entrepreneurs to conquer the global e-commerce landscape. We are one of the fastest-growing platforms in the industry, experiencing a remarkable growth of 15 times in the last 3 years! We provide an all-in-one system for thousands of sellers, seamlessly integrating them with Amazon, eBay, and Shopify.However, technology alone is not enough. In our team, we value engineering integrity and human decency. We are not looking for a 'Ninja' or a 'Rockstar'; we seek a Partner we can trust.Managing infrastructure that handles millions of requests is a position of high trust. That’s why we are searching for a person with a strong moral backbone.Your Technology StackWe operate on a robust and efficient stack. You need to know it inside out.Core: Linux (Debian/Ubuntu), Nginx (deep tuning and optimization), PHP-FPMCloud: AWS (EC2, S3, RDS, VPC, Lambda, IAM)Data: MySQL, Redis, RabbitMQObservability: Datadog, ELK Stack (Elasticsearch, Kibana)IaC: Terraform / AnsibleYour ResponsibilitiesManage permissions related to infrastructure. We expect meticulous attention to who has access to servers and why.Implement stable operation concepts for AWS cloud services that can withstand our dynamic growth.Maintain Unix/Linux servers – configuration, updates, and automation, with a comprehensive understanding of what is happening in the operating system.Respond to incidents based on thorough log analysis (DD, Elastic). Seek root causes (Root Cause Analysis), rather than just restarting services.Support development teams to ensure continuous and smooth system operation.What We ExpectAt least 4 years of experience in a DevOps/SysAdmin role, including practical experience with AWS.Strong cloud knowledge, complemented by experience in traditional administration (experience in maintaining physical servers/Data Center is a plus).Proficiency in Linux: The terminal is your natural working environment.Morality and Responsibility: You blend a 'Can Do' approach with accountability for the entrusted 'keys to the kingdom.'Humble towards technology: You understand that everyone makes mistakes, but you know how to fix them.Analyze problems from a '360-degree' perspective: You look at issues from every angle – security, performance, and long-term effects.Bridge cloud and 'metal': We work on AWS, but we seek someone who understands the physical nature of servers.Language: English at least B2 (we operate globally).Preferred QualificationsAWS certifications (confirming knowledge).Practical experience with Terraform.Familiarity with Apache Kafka or Cloudflare.Desire to develop towards agent-based DevOps (process automation).What We OfferA work environment where we treat mistakes as learning opportunities and encourage growth.

Join aura798 as a Senior Full Stack Engineer and be part of a dynamic team that is shaping the future of technology. In this role, you will be responsible for developing innovative software solutions, improving existing applications, and collaborating with cross-functional teams to deliver high-quality products.The ideal candidate will have a strong background in both front-end and back-end development, a passion for coding, and a commitment to continuous learning. You will work closely with product managers and stakeholders to understand requirements and translate them into technical specifications.

Join our dynamic team as a Senior Full-Stack Developer specializing in AI-assisted development! At Creatunity, we are on a mission to innovate and enhance our applications using cutting-edge technologies. This role offers you the opportunity to leverage AI tools like Cursor IDE to efficiently develop and deploy features across various products. You will take ownership of projects from inception to deployment, working independently with AI pair programming to scale our development efforts.Key ResponsibilitiesDevelop and implement full-stack features utilizing Next.js, React, TypeScript, Prisma, and PostgreSQLUtilize Cursor IDE and AI assistants to streamline the development processDesign and optimize database schemas and queries for performanceIntegrate with third-party APIs including Stripe, Supabase, and various music servicesCreate intuitive admin dashboards and complex user interfacesOversee projects from requirements gathering to final deploymentQualificationsMinimum of 5 years of experience in full-stack developmentProficient in TypeScript, React, Next.js, Node.js, and PostgreSQLDemonstrated experience with Cursor IDE or similar AI coding toolsFamiliarity with Prisma, Supabase Auth, and StripeSelf-motivated, quick to learn, and an exceptional problem-solverExcellent communication and documentation capabilitiesTechnology StackNext.js 14+, React, TypeScript, Prisma, PostgreSQL (Supabase), Stripe, Vercel, Cursor IDEWhat We OfferEngage at the forefront of AI-assisted developmentTake charge of projects and make influential technical decisionsFast-paced, impactful work environmentFully remote work with flexible hoursCompetitive salary and benefitsApplication ProcessPlease submit your resume, GitHub profile, and examples of your work in AI-assisted development. Don’t forget to include a brief overview of your experience with tools like Cursor!

Mapbox stands at the forefront of the real-time location platform, enabling a new wave of location-aware businesses. As the only platform providing organizations with a comprehensive toolkit for navigating people, packages, and vehicles globally, Mapbox has garnered the trust of over 4 million registered developers. Our platform is celebrated for its flexibility, stringent security measures, and adherence to privacy regulations. Companies leverage Mapbox's applications, data, SDKs, and APIs to craft tailored and immersive experiences that captivate their customers.About the TeamThe Data Tooling team is responsible for a diverse array of services aimed at reviewing, validating, and editing Mapbox’s global basemap content. Our mission is to provide customers with the most precise and continuously updated Live Map of the world. We utilize sophisticated data processing pipelines and a suite of proprietary tools, refined over the years, enabling us to validate millions of data updates monthly, process thousands of user feedback submissions from vehicles and mobile devices weekly, and annotate millions of anonymized user sessions and telemetry to extract actionable insights at scale.We are on the lookout for a skilled engineer to collaborate with our dedicated group of software engineers, taking ownership of and enhancing our mapping tools to new heights.As artificial intelligence becomes integral to modern engineering workflows, we appreciate engineers who can thoughtfully incorporate AI into design, development, and decision-making processes. Our interview process will involve a discussion on your approach to integrating AI within your engineering workflow.Your Key ResponsibilitiesLead the design, development, and testing of Mapbox tools and services aimed at addressing customer feedback and implementing corrections on third-party data.Tackle complex workflow challenges and enhance both frontend and backend services in response to shifting business requirements, performance metrics, and user feedback.Establish operational metrics to ensure your services meet performance expectations and continuously pursue improvements.Maintain comprehensive documentation for your services.Collaborate closely with the in-house editors team to understand their workflows and gather insights into their daily service usage challenges.Essential QualificationsOver 5 years of experience as a full-stack software engineer.Strong proficiency in JavaScript and modern frontend frameworks, particularly React.

N-iX stands as a leading global software development firm, established in 2002, boasting a vibrant community of over 2,400 technology experts across more than 40 countries. We specialize in delivering cutting-edge technology solutions encompassing cloud computing, data analytics, artificial intelligence, embedded software, IoT, and other domains, serving prominent industry leaders and Fortune 500 companies. Become a part of our mission to innovate technology that instigates real transformation for businesses and individuals around the globe. Our client, a renowned UK-based financial services and investment banking entity, is pioneering an AI-driven document processing and automation platform utilized across various sectors of the broader banking group. This platform harnesses state-of-the-art cloud and AI technologies to revolutionize outdated workflows, elevate data integrity, and expedite digital decision-making. Position Overview: We are in search of a Tech Lead Full Stack Engineer who possesses robust hands-on engineering proficiency and is adept at leading agile software development teams. The ideal candidate will be responsible for defining and steering the technical strategy of the platform, mentoring engineers in the delivery of scalable and secure systems, and actively participating in architectural decisions and solution design. This position demands a mix of profound technical knowledge and leadership skills, especially in environments utilizing Google Cloud, microservices, APIs, Python, and data-heavy processing. The Tech Lead will collaborate closely with product, architecture, data science, and engineering teams to guarantee superior delivery and alignment with business objectives. Join Our Team & Earn Exciting Bonuses!We are thrilled to offer a Welcome Bonus of $3,000 USD for new hires. Additionally, if you refer a friend who is successfully hired, you will receive a Referral Bonus of $2,000 USD! Key Responsibilities: Articulate and communicate the technical vision, architecture, and engineering roadmap for the team and platform. Guide engineers, perform code reviews, offer architectural guidance, and ensure compliance with engineering standards. Steer the technical delivery lifecycle from design through development to deployment and maintenance. Create scalable, high-performance microservices, UIs, and APIs utilizing modern frameworks and cloud-native design principles. Oversee the integration of AI components (e.g., Google Cloud, Vertex AI, Gemini models, and LLM evaluation frameworks). Encourage test-driven development and promote best practices within the team.

Creatunity LLC is on the lookout for a talented and experienced technical leader to oversee our team of senior full-stack developers. This pivotal role requires a strong background in full-stack engineering alongside a proven capacity for leadership in developing and launching innovative IT products and applications. The ideal candidate has a history of writing production-quality code, managing delivery processes, mentoring developers, and successfully deploying intricate solutions powered by AI-assisted development tools. Contract Type: Independent Contractor AgreementWhat You'll Do Lead a skilled team of senior full-stack developers while coordinating technical execution across various projects. Develop scalable full-stack features utilizing Next.js, React, TypeScript, Prisma, and PostgreSQL. Employ Cursor IDE and AI coding assistants to enhance development workflows and boost productivity. Architect systems, design database schemas, and fine-tune performance-critical queries. Integrate and manage third-party APIs (e.g., Stripe, Supabase, music platforms, SaaS services). Create advanced admin dashboards, internal tools, and intricate user interfaces. Manage projects from inception to completion — from gathering requirements and system architecture to deployment and optimization. Set best practices for code quality, testing, documentation, and deployment pipelines. Mentor developers, conduct code reviews, and foster engineering excellence throughout the team.