Fullstack Software Engineer Senior Level jobs in Warsaw – Page 4 | RoboApply Jobs

Fullstack Software Engineer Senior Level jobs in Warsaw· Page 4

Results 61–80 of 813 for “Fullstack Software Engineer Senior Level” in Warsaw.

813 jobs found

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Nordsec logo
Full-time|On-site|Warsaw

Join NordVPN, a leading cybersecurity company, as a Low-Level Server-Side Engineer. In this dynamic role, you will contribute to enhancing our server infrastructure and optimizing performance, ensuring our users enjoy a seamless and secure experience.

Apr 13, 2026
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nearmap logo
Full-time|On-site|Warsaw

About the Role nearmap is hiring a Software Engineer in Warsaw. This team focuses on developing solutions for aerial imagery, working together to solve technical challenges and improve products. What to Expect Contribute to projects that advance aerial imagery technology Work closely with colleagues in a collaborative setting Engage with complex problems and help build practical solutions Who We’re Looking For Experience in software engineering Comfort working as part of a team Interest in tackling technical challenges This position is based in Warsaw.

Apr 15, 2026
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RTB House logo
Full-time|Remote|Warsaw, Masovian Voivodeship, Poland

About Us:RTB House stands as a pioneering performance demand-side platform (DSP), harnessing proprietary Deep Learning AI algorithms to empower brands in their growth journeys. As a market leader, we drive performance through Deep Learning across the entire purchase funnel.Established in 2012 and currently operating in over 90 markets, RTB House is firmly private-by-design, advocating for first-party advertising and a relentless commitment to innovation. Our end-to-end Deep Learning-powered AdTech products and solutions are tailored to maximize conversions, facilitate new customer acquisition, enhance engagement, and stimulate long-term demand for our global clientele.We are on the lookout for a talented Software Engineer with substantial backend and microservices development experience to join our dynamic team. In this role, you will design, develop, and maintain web applications, microservices, and internal tools, while also contributing to frontend development as necessary.

Mar 12, 2026
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nordsec logo
Full-time|On-site|Warsaw

Join our innovative team at nordsec as a DevOps Engineer. In this exciting role, you will collaborate with cross-functional teams to streamline our software development and deployment processes. Your expertise will ensure the reliability and efficiency of our systems while enabling our team to deliver top-notch software solutions.If you have a passion for automation, cloud services, and continuous integration/continuous deployment (CI/CD) practices, we want to hear from you. Bring your skills in infrastructure management and help us scale our operations!

Mar 16, 2026
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RTB House logo
Full-time|On-site|Warsaw, Masovian Voivodeship, Poland

Location: PolandAbout Us:RTB House is a leading global technology company that specializes in cutting-edge marketing solutions for renowned brands and agencies across the globe. Our proprietary ad-buying engine, the first of its kind, utilizes Deep Learning algorithms to provide advertisers with exceptional results and to effectively meet their objectives at every stage of the marketing funnel.We invite you to join RTB House as the head of our AI Engineering Lab, a team dedicated to driving innovation through the latest advancements in Agentic AI. This position is designed for a proactive engineer and technical leader committed to architecting, developing, and deploying next-generation AI solutions that enhance engineering productivity.

Feb 13, 2026
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Nord Security logo
Full-time|On-site|Warsaw

Join the forefront of digital security with the world's most advanced VPN.As a passionate innovator and problem-solver, become part of the team that developed Threat Protection Pro and the NordLynx protocol—the fastest VPN globally. Our tools empower individuals by reclaiming their privacy, security, and control over their digital lives.Your Contributions: Play a pivotal role in helping millions regain authority over their online security, privacy, and data.Key Responsibilities:Design, develop, and sustain data curation and ingestion services tailored for the Threat Intelligence team.Collaborate on and implement robust architectural solutions, including distributed computing pipelines, microservices, and database integrations.Engage actively in code reviews, provide constructive feedback, and ensure top-notch technical documentation.Innovate and design new services to enhance data feed quality.Maintain adherence to coding standards, ensuring code is maintainable, readable, and secure, while fostering a results-oriented mindset.Continuously generate and discuss new ideas in the context of product development and cybersecurity.Offer technical guidance and leadership to team members.Essential Qualifications:Proficient in Python, with a strong grasp of core concepts, syntax, and data structures.Experience in designing microservice architectures and facilitating effective communication.Familiarity with data storage solutions, especially PostgreSQL.Ability to write clean, maintainable, and efficient code.Hands-on experience with cloud infrastructure technologies such as Docker and Kubernetes.Exceptional problem-solving skills with a knack for analyzing and resolving complex issues.Demonstrated capacity for rapid learning and proactive problem detection.Detail-oriented with a structured approach to research and implementation.

Apr 12, 2026
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Box logo
Full-time|On-site|Warsaw, Poland

Join Box as a Senior Software Engineer!At Box, we are revolutionizing the way organizations manage content. As the leader in Intelligent Content Management, our platform empowers businesses to collaborate, streamline workflows, and secure vital content through the power of enterprise AI. With a global clientele that includes industry giants like JLL, Morgan Stanley, and Nationwide, we are dedicated to transforming the workplace experience for our customers.By becoming part of Box, you will play a crucial role in advancing our eCommerce platform, which is pivotal for enabling customers of all sizes to purchase and manage their Box subscriptions through self-service solutions. This initiative not only supports our expansion into new international markets but also enhances our pricing and discount mechanisms to drive business growth. Your contributions will directly impact a significant portion of Box's revenue, making reliability and performance critical to our success.Your Responsibilities:Design and develop high-quality, scalable, and responsive software using cutting-edge technologies.Write clean, maintainable code adhering to industry best practices.Collaborate effectively with cross-functional teams including Designers and Product Managers to deliver exceptional user experiences.

Feb 18, 2026
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NordLayer logo
Full-time|On-site|Warsaw

Join NordLayer in revolutionizing cybersecurity solutions for modern businesses.At NordLayer, we create a seamless, toggle-ready platform designed to empower contemporary teams while alleviating security concerns. Trusted by over 11,000 companies globally, our solution integrates flawlessly with various tech stacks, ensuring user protection across international borders.Your role: Contribute to safeguarding businesses and advancing their network security with innovative, future-proof solutions.

May 4, 2026
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Veeam Software logo
Full-time|On-site|Warsaw, Poland

Join Veeam Software as a Junior/Middle QA Engineer and be part of a dynamic team dedicated to ensuring the highest quality of our innovative software solutions. In this role, you will collaborate with developers and product teams to identify and resolve issues, contributing to the continuous improvement of our products.

Apr 2, 2026
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Sigma Software Group logo
Senior Full Stack Engineer

Sigma Software Group

Full-time|On-site|Warsaw

Join our team as a Senior Full Stack Engineer and contribute to cutting-edge projects that push the boundaries of technology. You will work in a collaborative environment, utilizing your expertise in both front-end and back-end development. We're looking for someone who is not only technically proficient but also passionate about delivering high-quality solutions.

Apr 1, 2026
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evolution logo
Full-time|On-site|Warsaw

Join our dynamic team at evolution as a Senior Quality Assurance Engineer, where you will play a pivotal role in ensuring the highest quality standards are met in our software development processes. Your expertise will be invaluable in designing and implementing test strategies, developing automated tests, and collaborating with cross-functional teams to deliver superior products.

Apr 9, 2026
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Nearmap logo
Full-time|On-site|Warsaw

Role overview Nearmap seeks a Senior Quality Assurance Engineer based in Warsaw. The position centers on upholding strong quality standards for software products, using careful testing and validation methods. Working closely with developers and stakeholders, this engineer helps find issues and supports continuous improvements across applications. The role requires attention to detail and a commitment to reliable results. What you will do Test and validate software products to ensure they meet quality expectations Collaborate with developers and stakeholders to identify and resolve issues Contribute to ongoing enhancements of Nearmap's applications Requirements Experience in quality assurance or software testing Strong collaboration and communication skills Based in Warsaw

Apr 22, 2026
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Telemedi logo
Full-time|Remote|Remote — Warsaw, Masovian Voivodeship, Poland

Welcome to the new era of software development at Telemedi! We are at the forefront of transforming the development process. By harnessing cutting-edge technologies combined with technical expertise and exceptional commitment, we strive to build more, faster, and better than ever before.Our developers utilize Cursor AI (cursor.com) — an IDE that completely changes the programming paradigm. In just a few hours, we accomplish what would take other developers several days. We expect you to do the same.Join us if:You are eager to work in a product-driven company where your contributions lead to tangible results.You thrive in a dynamic environment filled with activity.You take ownership of your work and the team’s outcomes.You embrace challenges and can navigate complex applications with ease.You enjoy understanding the business side and communicate effectively across teams.You create high-quality applications and features quickly and efficiently.You are confident in your technical skills and can enhance application standards, including improving legacy code.You are proactive in optimizing processes within your surroundings.Your responsibilities include:Participating in the development of IT solutions from start to finish (here, IT is not a “silo”).Enhancing web applications (adding new features, bug fixing, refactoring).Contributing to the design of new solutions and development infrastructure.Engaging in code reviews and ensuring the quality of created solutions.Constantly raising the standards of development processes.Collaborating closely with the team (Developers, PMs/POs, QAs).Maintaining high programming quality and a swift task delivery pace (both individually and as a team).Requirements:Experience with modern AI tools in programming (such as Cursor/Windsurf - GitHub Copilot is not sufficient). While prior experience isn't mandatory, a solid understanding and practice with the paradigm are essential.A minimum of 3 years of commercial experience working with PHP, specifically with Symfony or a similar framework.A minimum of 1 year of commercial experience with React.js framework, including some experience with TypeScript.Practical knowledge of design patterns and best programming practices (SOLID, KISS, DRY, etc.).Proficiency with version control systems, such as Git.A sense of ownership, independence, and responsibility for assigned tasks.Attention to detail and diligence in work (both individually and in a team).Fluency in Polish.Preferred qualifications:Familiarity with performance and optimization issues related to web applications.

Jan 14, 2025
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Aurora Solar logo
Full-time|Hybrid|Warsaw, Poland

About Aurora Solar Aurora Solar builds software that helps solar professionals design, sell, and install solar projects for both residential and commercial customers. Our platform supports millions of solar projects worldwide, providing tools and insights that make solar energy more accessible. Aurora Solar has received recognition as one of the "Best Remote Companies To Work for in 2025" by BuiltIn.com and is a Certified Green Business (CGB) by the city of San Francisco for the second year in a row. Team Overview The International team drives Aurora Solar’s expansion into new markets. Engineers on this team create solutions that address local compliance needs and adapt workflows for different regions. Collaboration with stakeholders from various countries helps the team understand local solar sales, design, and installation practices. The group values knowledge sharing, inclusivity, and continuous improvement, celebrating progress whether it’s a new feature launch or a more resilient system. Role Overview The International Software Engineer will help strengthen Aurora Solar’s platform as the company grows globally. This role focuses on building scalable systems that support new initiatives and enhance the experience for both solar professionals and homeowners. The position offers opportunities to take on increasing responsibility and contribute to smarter, simpler solutions for the clean energy transition. This is a hybrid role based in Warsaw, Poland.

Apr 14, 2026
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Nord Security logo
Full-time|On-site|Warsaw

Role Overview Nord Security is looking for a Low-Level Engineer to join the NordVPN team in Warsaw. This role focuses on developing and improving VPN technology that protects users' privacy and security around the globe. What You Will Do Collaborate with a skilled team to design, build, and refine VPN solutions Work on projects that strengthen digital security for millions of users Contribute to features and enhancements that improve online privacy Location This position is based in Warsaw.

Apr 15, 2026
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NordSec logo
Full-time|On-site|Warsaw

Role overview NordVPN is looking for a Low-Level Engineer in Warsaw to help build and maintain core technologies. This role focuses on improving software solutions and supporting the security and performance of NordVPN products. What you will do Work closely with other engineers to develop and maintain foundational software components Contribute to the security and efficiency of NordVPN’s products Help enhance existing solutions and support ongoing product improvements

Apr 15, 2026
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Propellerhead logo
Full-time|Remote|Warsaw

Join our dynamic team based in Auckland, New Zealand, as we embark on an exciting journey to transition to a Rust codebase! We are on the lookout for passionate individuals eager to learn, grow, and contribute to our innovative projects.We encourage applications from talent around the globe who are interested in remote roles, as well as those considering relocation to Auckland. While we primarily operate in New Zealand time zones, we welcome international candidates who can maintain minimal overlap for daily stand-ups, typically held at the beginning of the New Zealand workday (9:00 AM NZT).The Role:As a Senior Software Developer in our core delivery team, you will engage in the crafting of intricate systems that extend beyond routine feature enhancements. Collaborating with a team that values software craftsmanship and autonomy, you will be instrumental in shaping our technical direction.We foster an environment that champions technical excellence, curiosity, and innovative design. We seek someone who is excited by emerging technologies and is driven to make a significant impact on how users interact with digital interfaces.Our culture is built on trust, continuous learning, and making meaningful contributions. Join a team that prioritizes integrity over ego and clarity over complexity.If you are ready to tackle real-world challenges with substantial impact and help shape the future of our solutions, we would love to hear from you!

Dec 17, 2024
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Sigma Software Group logo
Full-time|On-site|Warsaw

Sigma Software Group is looking for a Senior Test Engineer to help improve the quality of its e-commerce platform. This role is based in Warsaw and centers on building and carrying out test strategies that support reliable software releases. What you will do Create and implement test strategies for the e-commerce platform Execute tests to confirm software quality and performance Work closely with cross-functional teams to identify and resolve issues Role overview This position focuses on ensuring that customers receive a dependable digital experience. The Senior Test Engineer will contribute to the ongoing improvement of the platform by collaborating with others and applying effective testing practices.

Apr 29, 2026
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Sigma Software Group logo
Full-time|On-site|Warsaw

Join our dynamic team at Sigma Software Group as a Principal Software Engineer specializing in Ruby. In this role, you will lead innovative projects, drive technical excellence, and mentor junior developers. Your expertise will be pivotal in shaping our software solutions and enhancing our development practices.

Mar 26, 2026
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Moss logo
Full-time|On-site|Warsaw

Join Moss, where we empower finance professionals to automate their daily tasks and make innovative decisions.Our culture is what sets us apart — we prioritize impact and continuous growth, encouraging each team member to learn and excel. Moss has been recognized by Sifted’s Rising 100 and LinkedIn's Top Startups, and we are committed to driving your career forward while building a lasting success story together.We are currently seeking a Senior Frontend Engineer (f/m/d) to join one of our diverse tribes in Warsaw. The tribes currently hiring include:Financial ServicesGrowthSpend ManagementYou will work closely with product, design, and backend engineers to provide seamless and scalable solutions.

Oct 5, 2025

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