Mid/Senior Java Developer at altersolutions | Warsaw

Join our dynamic team at altersolutions as a Mid/Senior Java Developer! We are looking for passionate and skilled developers who are eager to tackle exciting challenges and contribute to innovative software solutions. In this role, you will work closely with cross-functional teams to design, develop, and implement Java-based applications that meet client nee…

Join altersolutions as a Mid/Senior Java Developer and collaborate with our dynamic team to create innovative software solutions. You will be responsible for designing, developing, and maintaining high-quality Java applications. This is a fantastic opportunity to work in a fast-paced environment where your contributions will be valued.

Role overview Nord Security seeks a Mid-Senior Copy Editor based in Warsaw. This position centers on shaping and polishing written content for readers worldwide. The editor reviews materials to confirm they meet Nord Security’s standards for quality, clarity, and brand voice. What you will do Edit and refine content to keep it clear, accurate, and consistent with the brand Uphold high standards across all written materials Help support effective communication on a variety of platforms

We are seeking a skilled Java Developer to join our dynamic team responsible for advancing modern electronic banking systems. This project focuses on developing a versatile electronic banking application for both Android and iOS platforms. As the team undergoes reorganization, we are innovating new backend solutions to facilitate communication between the mobile application and the web service.

Become a pivotal part of our talented Web Design team, where you will contribute to redefining the online presence of a leading global cybersecurity provider.We are seeking a skilled designer eager to enhance our web presence, driving user engagement and satisfaction. Your primary focus will be on creating visually appealing and user-friendly websites. You will work closely with our Marketing team on diverse projects, from global campaigns to new business initiatives. As a designer, you will also collaborate with copywriters, web content managers, design system specialists, graphic designers, and engineers to deliver exceptional websites that captivate audiences worldwide.Main ResponsibilitiesDesign web pages that promote user engagement and interaction, ensuring a seamless browsing experience.Evaluate existing website patterns and structures, identifying design and architectural flaws to recommend effective solutions and enhancements.Partner with marketing and product teams to ensure that web designs align with our brand identity and business goals, enhancing user engagement and conversion rates through comprehensive, user-centric strategies.Collaborate closely with UI/UX Designers, UX Researchers, and Design System designers.Champion design excellence by presenting and justifying your design decisions and their potential impact on growth metrics to stakeholders.Core RequirementsDemonstrated experience in web design, backed by a portfolio showcasing your ability to create engaging web pages.Outstanding visual and interaction design skills, with a strong attention to detail and a passion for crafting intuitive user experiences.A commitment to aligning design strategies with business objectives and user requirements.A collaborative mindset, capable of working with data analysts, web content managers, and developers to ensure the integrity of design and its implementation.A quick learner, adaptable to emerging technologies and changing project demands, receptive to feedback for continuous improvement.Excellent communication skills, with fluency in English.Proficiency in Figma.

Join our dynamic team at Nordsec as a Mid-Level Backend Engineer, specializing in developing robust security tools. In this role, you will design, implement, and maintain backend services that safeguard our digital assets and enhance user experiences.Your responsibilities will include collaborating with cross-functional teams, ensuring optimal system performance, and contributing to the architecture of our security infrastructure. We are looking for innovative thinkers who are passionate about coding and eager to tackle challenging problems.

Join our team as a Backend Engineer and contribute to our innovative solutions at NordProtect. We are looking for talented individuals with a passion for technology and a strong background in backend development, specifically using Go. In this role, you will collaborate with cross-functional teams to design, implement, and maintain robust and scalable backend systems.

Join Saily, where we are transforming the travel experience by eliminating the hassle of staying connected while on the go. Our service offers lightning-fast, secure mobile data across 200+ destinations, without the burden of roaming fees or plastic SIM cards. With millions of satisfied customers and countless travelers engaging with our service, we are on a mission to redefine connectivity.At Saily, we cultivate an AI-native Product Engineering culture, which empowers our engineers to take full ownership of product development from conception to deployment. Our AI Agents handle repetitive tasks and assist engineers in maximizing their productivity. We believe in the collective effort to enhance our service by continuously identifying areas for improvement and implementing innovative solutions.We prioritize curiosity, learning, and collaboration while keeping our customers' comfort and connectivity as our core focus. At Saily, we value growth over comfort, contribution over hierarchy, and impact over process, providing our talented team with the autonomy and context necessary to excel.

Sperasoft is seeking a talented and experienced Level Artist to become a pivotal part of our dynamic art team. In this role, you will have the chance to craft stunning and immersive game environments that enhance player experience. Your responsibilities will include interpreting references and adhering to the artistic vision to develop levels that resonate with the game's narrative and aesthetic. With a sharp eye for detail and the ability to work autonomously, you will take the lead in creating captivating worlds. Your artistic insights and skills will play a crucial role in upholding the visual quality of our games.Key Responsibilities:Design and embellish environments that promote gameplay clarity, player navigation, and visual storytelling.Ensure visual fidelity and uniformity of levels adhere to the established quality standards and artistic direction.Collect and organize reference materials for environmental elements.Adhere to studio protocols, including naming conventions and asset management practices.Construct and modify modular assets to create diverse architectural and environmental settings.Develop visual breakdowns, reference boards, and asset inventories as needed.Provide production and artistic assistance to the Lead Level Artist.Integrate environmental assets and textures effectively into levels.Collaborate with Tech Art and Design to optimize levels for performance (draw calls, LODs, streaming).Configure asset properties concerning visuals and performance (LODs, collisions, materials).Assist in the identification and rectification of visual bugs throughout production and testing phases.Evaluate level quality within the engine and implement necessary enhancements.Qualifications:Comprehensive understanding of architectural and natural environment design principles, composition, scale, and structure.Knowledge of gameplay readability, player navigation, and principles of visual guidance.Experience in optimizing levels for real-time engines (LOD, draw calls, streaming, etc.).Strong skills in modeling modular environmental assets.Proficient with Maya and/or Blender.Experience with material blending and vertex painting systems.Proficient in Unreal Engine or other comparable real-time engines.Familiarity with Substance Painter/Designer.Understanding of physically based rendering (PBR) workflows and material standards.Exceptional attention to detail and consistency with the project’s artistic style.Able to work collaboratively within a multidisciplinary team.Preferred Qualifications:Knowledge of material optimization techniques for real-time engines.Basic knowledge of lighting principles and experience in adjusting lighting in real-time engines.Familiarity with procedural tools such as Houdini is an advantage.Experience contributing to shipped titles.Benefits:Comprehensive Medical Care package.MyCafeteria system - including Multisport card.

Join the NordPass Team to Revolutionize Password Security!At NordPass, we strive to make online password management effortless and secure. With over 7 million users and 10,000+ companies relying on us, we are committed to providing a premium password manager that safeguards credentials, cards, and sensitive information.Your Contribution: Play a pivotal role in enhancing digital security for millions by developing innovative and secure login solutions.Key ResponsibilitiesCollaborate with cross-functional teams to integrate and optimize microservices across NordSecurity's product ecosystem, ensuring a seamless user experience.Prioritize the delivery of high-quality, scalable, and secure code.Engage in key technical and architectural decisions, refining development processes and shaping the strategic direction of our products.Demonstrate strong ownership over product development, maintenance, and quality assurance.Facilitate effective communication and collaboration among engineering, product, and design teams.Essential QualificationsExtensive experience with PHP (3+ years).Hands-on experience with AI tools to enhance engineering (e.g., code generation, test creation, performance optimization, and debugging), demonstrating accountability for outcomes.Proficient in system design, with a clear understanding of design patterns and their applications.Solid grasp of Object-Oriented Programming (OOP), asynchronous programming, and design patterns.A genuine passion for architecture and technology; we want to hear from those who can create scalable and robust code.Familiarity with core CI/CD principles, unit testing, and integration testing.Preferred QualificationsKnowledge of cryptography.

Become a key player in our dynamic Web Marketing Design Team at Nordsec, where your creativity will shape the digital landscape of premier cybersecurity solutions worldwide. We are on the lookout for a talented web designer eager to contribute to an engaging online presence that drives user acquisition and enhances customer satisfaction. Your primary focus will be on designing visually compelling and user-friendly websites. Collaborate closely with our marketing team on various initiatives, from global campaigns to innovative business projects. As part of your role, you will also work hand-in-hand with copywriters, web content managers, graphic designers, and engineers to deliver exceptional websites that resonate with our audience.

Join our dynamic team at nordsec as an Employer Brand Manager! In this exciting role, you'll be responsible for shaping our employer brand strategy, enhancing our company’s visibility in the job market, and attracting top talent. You will collaborate with various departments to promote our unique company culture and values, ensuring that our brand resonates with potential candidates.

Join our dynamic trading platform as we extend our reach globally. Our award-winning products are recognized for their innovative technology and exceptional user experience. We are dedicated to assembling a top-tier team, and we are eager to welcome talented individuals who share our vision.In the role of Data Engineer, you will be an essential member of our data team, responsible for the design, development, and maintenance of robust data pipelines and systems. Collaborating closely with data scientists, analysts, and other stakeholders, you will ensure that our data is reliable and readily available to support informed decision-making and analytics efforts. Your key responsibilities will involve data ingestion, transformation, and delivery, alongside optimizing our data infrastructure.As a Mid-Level Data Engineer, you are expected to enhance and sustain our data infrastructure, guaranteeing data integrity and accessibility. You should demonstrate the ability to work both independently and collaboratively, adapting to evolving data requirements and partnering with fellow data professionals to derive meaningful insights for the organization. Keeping abreast of the latest data engineering best practices and emerging technologies will be vital for your success in this position.

Join NordLayer and be a part of our mission to revolutionize cybersecurity for businesses.Our innovative platform is designed to empower modern teams, allowing them to operate without the typical security concerns. With over 11,000 companies worldwide relying on NordLayer, we seamlessly integrate with any tech stack to ensure user protection across borders.Your role? Contributing to the development of next-generation network security solutions that help businesses remain secure and progressive.

At NordPass, we are dedicated to making password security effortless.We believe that logins should be both safer and simpler. Join the innovative team behind NordPass— a leading password manager relied upon by over 7 million users and more than 10,000 global enterprises to protect their credentials, cards, and sensitive information.Your impact? You will be instrumental in helping millions secure their digital lives by developing smarter and safer login solutions.Main ResponsibilitiesDesign, develop, and take ownership of security-focused backend services (including breach detection, email masking, and related tools) with a commitment to high quality, performance, and accuracy.Utilize AI-assisted workflows on a daily basis (code generation, test scaffolding, debugging, performance optimization) while continuously evaluating new tools to enhance the team's productivity.Contribute to the establishment of shared AI practices within the squad: reviewing patterns, creating prompt libraries, and setting guardrails to ensure AI-generated code meets the same standards as hand-written code.Engage in system design and architectural decision-making, advocating for solutions that are secure, scalable, and maintainable.Collaborate across functions with Frontend, Android, iOS, and Backend engineers to deliver comprehensive features across all platforms.Assume full responsibility for your creations, from design to production, ensuring uptime, reliability, and code excellence.

Ruut is a digital coaching platform focused on helping athletes and runners make smarter daily decisions about training and recovery. By using metrics like HRV, Ruut aims to improve performance stability and reduce injury risk through clear actions and personalized running plans. This Mid-Level iOS Mobile Engineer role centers on shaping both the product and the broader engineering culture. The team values engineers who want to influence features, architecture, and the pace of business development, not just write code. Ruut operates in Kyiv and Warsaw, with a team that welcomes responsibility and thrives on building meaningful solutions together. Role overview Take ownership of iOS development for Ruut’s core product, contributing to both features and foundational engineering practices. Influence technical decisions, optimize processes, and help the team deliver faster. Work closely with product managers, designers, and fellow engineers, with significant autonomy in your area. What you will do Develop, improve, and support new features in the iOS app. Contribute to the main product and explore new directions for the platform. Build and enhance mobile infrastructure, including CI/CD, testing, and release processes. Implement observability tools for logging, crash tracking, and metrics. Integrate AI tools and automation into development and delivery workflows (using tools such as Cursor, Codex, or Claude). Collaborate with product and design, while making independent technical decisions. Shorten time-to-market through faster releases, A/B testing, and rapid iteration. Requirements Experience in mobile development, especially on iOS. Background working with product teams or startups. Desire for impact, ownership, and the chance to work with modern approaches, including AI. Comfort with responsibility and building alongside a talented team.

Join Netguru, a leading partner in digital commerce, as we empower top-tier brands to modernize their B2B solutions, marketplaces, and retail ecosystems. Since our inception in 2008, we have been at the forefront of technology innovation, utilizing AI-driven personalization and exceptional engineering and design expertise. As a certified B Corporation®, we proudly serve renowned clients such as IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted.What to Expect as a Netguru Freelancer:At Netguru, we offer the flexibility you crave. You have the autonomy to decide when, where, and how you work on projects, ensuring a perfect fit with your skills. We provide numerous opportunities across various industries, allowing you to enhance your experience and expand your skill set.Furthermore, our freelancers can enjoy the perks of full-time collaboration, becoming integral members of our team.Ready to leave your mark? Join us in creating beautiful software that makes a difference.Location: Preferably Warsaw, PolandWork Model: Hybrid - At least once a week at the Client's office in WarsawContract Type: B2BCompensation: Up to 100 PLN/h (NET)Contract Duration: Start Date: 13/04/2026, End Date: 09/10/2026Language Requirement: Polish C1

Join Nordsec as a Mid-Senior Site Reliability Engineer in Warsaw, where you'll play a pivotal role in ensuring the reliability and performance of our systems. You will collaborate with cross-functional teams to enhance our infrastructure and optimize our deployment processes.In this role, you will be responsible for designing and implementing robust systems, automating processes, and monitoring our production environments.

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.

Role Overview Tietoevry is looking for a Regular or Senior Test Engineer with experience in embedded systems, Python, and audio technologies. This position is based in Warsaw and focuses on testing and quality assurance for embedded software solutions. What You Will Do Design, develop, and run test plans for embedded audio systems Work closely with the engineering team to ensure software meets quality and performance standards Contribute technical expertise to ongoing projects involving audio technology What We Look For Experience with embedded systems and Python Background in audio technology or testing audio solutions Ability to create and execute test plans