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Senior Software Engineer, Front-End or Full Stack Poland, Warsaw Jobs

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Full-Stack Developer (Java) - Enterprise Applications
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Join Citi's IDEAS team in Warsaw as a Full-Stack Java Developer. Design and enhance scalable enterprise applications and microservices using Core Java, REST APIs, and modern UI technologies. Collaborate with a global team and enjoy a comprehensive benefits package including private medical care a...
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Poland , Warsaw
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165020.00 - 280980.00 PLN / Year
https://www.citi.com/ Logo
Citi
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Until further notice
Full Stack Developer
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Join Circle K's Warsaw team as a Full Stack Developer. Work on innovative EV solutions using Java 17+, Spring, and Angular in a hybrid model. Develop microservices and distributed B2C systems within a modern tech stack. Enjoy benefits like an annual bonus, medical care, and international developm...
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Poland , Warsaw
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Not provided
https://www.circlek.com Logo
Circle K
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Until further notice
Full-Stack Developer
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Join Citi's global IDEAS team in Warsaw as a Full-Stack Developer. Design and maintain scalable enterprise web applications using Java, microservices, and modern UI tech (JavaScript, HTML5). Leverage 5+ years of experience with REST, Oracle, and message bus systems. Enjoy comprehensive benefits i...
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Poland , Warsaw
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Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Explore senior-level opportunities in cutting-edge technology with our curated list of Senior Software Engineer, Front-End or Full Stack jobs. These roles represent the pinnacle of web and application development, where seasoned professionals architect, build, and maintain the sophisticated digital products that power modern businesses and user experiences. Senior engineers in these domains are technical leaders, responsible for the entire software development lifecycle, from conceptualization and design to deployment, optimization, and ongoing iteration. They bridge the gap between complex business requirements and elegant technical solutions, ensuring systems are scalable, maintainable, and deliver exceptional user value. A Senior Front-End Engineer specializes in crafting the client-side layer that users directly interact with. Their core mission is to build intuitive, responsive, and high-performance user interfaces. Typical responsibilities include translating design mockups into functional, accessible code using frameworks like React, Angular, or Vue.js; optimizing applications for maximum speed and scalability; ensuring cross-browser compatibility; and implementing robust state management. They are deeply proficient in JavaScript/TypeScript, HTML, CSS, and modern build tools, with a keen eye for UX/UI principles and front-end performance metrics. A Senior Full Stack Engineer possesses mastery across both the front-end and back-end spectrum. They design and develop complete applications, handling everything from user-facing components to server-side logic, databases, and APIs. Common duties involve architecting overall system design, developing RESTful or GraphQL APIs, designing data models, writing server-side code in languages like Node.js, Python, or Java, and integrating with various data storage solutions. They ensure the seamless flow of data and functionality between the client and server, making critical decisions on technology stacks and infrastructure considerations. Typical skills and requirements for these senior roles extend beyond pure coding. Employers seek professionals with 5+ years of experience demonstrating a proven track record of shipping complex products. Expertise in modern frameworks and languages is a given, but equal emphasis is placed on software architecture, system design, and the ability to make long-term technical decisions. Strong collaboration skills are essential, as these engineers frequently work with product managers, designers, and other stakeholders to define requirements and translate them into technical specs. Leadership qualities such as mentoring junior developers, conducting code reviews, advocating for best practices, and driving technical excellence within a team are hallmarks of the position. A proactive problem-solving mindset, the ability to work in ambiguous environments, and a product-focused obsession with quality, performance, and user experience are the defining traits of successful candidates. Discover your next career-defining challenge by browsing our comprehensive selection of Senior Software Engineer, Front-End or Full Stack jobs today.

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