Senior Software Engineer

<b>Mission Statement: </b><span>We help businesses deploy resources and processes efficiently and make their customers and staff feel seen and valued.</span><br/><a href="http://kontakt.io/" rel="noopener noreferrer">Kontakt.io</a> is a leader in IoT. Our mission is to simplify the delivery of location and sensor data insights. We create the data foundation that drastically improves and automates decision-making in resource planning, operations, and customer experience workflows.Our portfolio of complete IoT and location solutions combines hardware, software, and cloud to bring real-time visibility, analytics, and AI to operations. Today, we serve over 2,000 customers across diverse sizes and industries, from transportation and logistics to manufacturing, healthcare, airports, governments, and public spaces. They use <a href="http://kontakt.io/" rel="noopener noreferrer">Kontakt.io</a> to reduce emergency incident time, decrease asset search times, introduce activity-based-costing, automate manual processes, digitize physical order traceability, or prevent machine downtimes.<br/>Success in this position requires a passion for building high-performing and reliable applications. You need to have an internal urge to come up with innovative ideas and look for the best tools to solve scalability problems. <br/><u>Our tech stack :</u> - <b>backend</b>: Kotlin, Java 17 ; Spring boot, spring-data, Kafka, MongoDB, PostgreSQL, Docker, Kubernetes, Python- <b>frontend</b>: Angular 15, TypeScript, Leafletjs, PrimeNG, <a href="http://Vue.js" rel="noopener noreferrer">Vue.js</a>, ES6, Nginx deployment, Figma designs<br/>We are looking for a person who is able to work independently with the ability to look at the problem from a product perspective, suggest proper solutions and then execute against them. <br/> <h3>You will be expected to:</h3> <ul> <li>develop user-facing <a href="http://Kontakt.io" rel="noopener noreferrer">Kontakt.io</a> Apps</li><li>define data models and work with database systems like MongoDB and Postgres</li><li>establish connectivity with third-party systems using modern integrations technologies like RESTful APIs, WSS Streams, Webhooks, Kafka streams</li><li>build modular and reusable components and libraries</li><li>contribute to key architectural decisions that directly impact the scalability of <a href="http://Kontakt.io" rel="noopener noreferrer">Kontakt.io</a> Apps.</li><li>write and maintain documentation</li><li>write performance tests</li><li>support and maintain CI/CD Workflows </li><li>create and drive best practices in the team (including peer reviews and building for testability)</li><li>propose any upgrades and updates necessary for keeping up with modern security and development best practices</li><li>participate in 24/7 on-call rotation</li></ul> <h3>Our requirements: </h3> <ul> <li>hands-on experience in designing and developing highly scalable applications using modern technology stacks such as <b>Java/Kotlin, Kafka/RabbitMQ, MongoDB </b></li><li><b>strong microservice architecture experience</b></li><li>knowledge of <b>Spring </b>frameworks</li><li>Web Flux, Groovy<b> </b>experience </li><li>extensive experience building complex applications using object-oriented<b> JavaScript/TypeScript </b>leveraging the best modern Web frameworks (Angular, React, Vue, etc.)</li><li>expertise in front-end JavaScript frameworks, HTML, and CSS</li><li>experience with building front-end JavaScript applications using RESTful interfaces</li><li>the ability to naturally follow good development practices like test automation, CI/CD, source version control, etc</li><li>experience with development for and deployment to <b>AWS</b></li><li>enjoy technical challenges and are eager to explore new technologies</li><li>good communication skills (English is a must)</li><li>Keycloak experience would be a great asset</li></ul> <h3>We offer:</h3> <ul> <li>B2B contract or an employment contract</li><li>competitive salary and stock option plan</li><li>work with cutting-edge technologies </li><li>100% remote or hybrid work (office in Krakow)</li><li>Linux or macOS laptop, depending on your preference</li><li>collaborative and self-organized environment</li><li>private medical care, cafeteria system</li></ul>Why <a href="http://kontakt.io/" rel="noopener noreferrer">Kontakt.io</a>:<br/><br/><b>We Make Things Easy:</b><br/>- <b>Easy to Use. </b>Simplicity is harder than complexity. Each of our apps focuses on a single user and a specific problem. We create solutions for everyone to help them get things done.<b>- Easy to Buy.</b> We simplify pricing with a single, per-bed or per-room model that encompasses all the necessary products and services to achieve your desired outcomes.<b>- Easy to Deploy.</b> Using AI, cloud, and mobile technologies, our equipment autonomously communicates and validates itself without the need for human intervention, cutting deployment time from months to weeks or even days.<br/><br/><b>We Deli