Mobile Application Manual Tester (SR)

AltersolutionsWarsaw

On-site Full-time

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Experience Level

Entry Level

Qualifications

Ideal candidates will possess:A strong understanding of mobile application testing methodologies. Experience with manual testing processes and tools. Excellent communication and teamwork skills. Ability to document and report defects clearly.

About the job

Join Altersolutions as a Mobile Application Manual Tester where you will be integral in ensuring the quality and functionality of our mobile applications. In this role, you will execute test cases, identify bugs, and collaborate with developers to enhance the user experience. Your attention to detail and analytical skills will help us deliver top-notch mobile solutions to our clients.

About Altersolutions

Altersolutions is at the forefront of innovative technology solutions, dedicated to delivering exceptional service and quality to our clients. With a dynamic team of experts, we strive to push the boundaries of technology and provide cutting-edge mobile applications that meet the evolving needs of businesses.

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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, 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, having grown 15-fold in the last 3 years! We prioritize a culture that values real impact and collaboration, with our team being the heart of our innovation.Does this sound intriguing? If you want to make a real impact in global e-commerce, apply today! We are waiting for you!

Dec 2, 2025

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Application Security Engineer

Solidgate

Full-time|On-site|Warsaw

Our Mission and VisionAt Solidgate, we are driven by a clear mission: to empower exceptional entrepreneurs in building remarkable internet companies. Our goal is to support the builders—those who are defining the digital economy—by providing them with the financial infrastructure they truly deserve. We are ambitiously pursuing our vision to become the world’s leading payments orchestration platform.We believe that the future of payments is shaped by individuals who think big, take ownership, and infuse curiosity and drive into their work. This is the kind of talent we are eager to welcome aboard.About the RoleSolidgate is committed to building a robust financial infrastructure for rapidly growing internet businesses across the globe. Our platform processes millions of payments daily and operates within a highly regulated fintech landscape where security is an integral product requirement—far more than an afterthought.Our engineering team is responsible for constructing and scaling a sophisticated cloud-native platform comprising over 120 microservices. As we continue to expand, we are enhancing our security framework by introducing a dedicated Application Security Engineer position.In this role, you will be pivotal in safeguarding our business and revenue by integrating security into the software development process—starting from initial design decisions through to CI/CD pipelines and live production systems.This position is hands-on and focuses on embedding security within the software development lifecycle while minimizing real product risks.You will collaborate closely with engineering teams to:Design secure application architecturesEnhance secure coding practicesIdentify vulnerabilities early in the development lifecycleContinuously advance application security as a routine aspect of engineering workYour contributions will directly influence the security of software development across a large microservices ecosystem, impacting standards, tools, and the overall engineering culture.Explore our technology stack here.

Jan 21, 2026

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Car Infotainment Application Engineer

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Full-time|On-site|Warsaw, Poland

Join 42dot as a Car Infotainment Application Engineer and be an integral part of shaping the future of automotive technology. You will work with cutting-edge technologies to develop innovative infotainment solutions that enhance user experiences in vehicles.

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Senior Application Security Specialist

EcoVadis

Full-time|On-site|Warsaw

Role Overview EcoVadis is hiring a Senior Application Security Specialist in Warsaw. This role focuses on protecting company applications and systems. The specialist will work to find vulnerabilities, put security controls in place, and partner with teams across the business to strengthen security practices. Key Responsibilities Identify and assess security vulnerabilities in applications and systems Implement measures to reduce risk and improve security Collaborate with cross-functional teams to support secure development and operations

Apr 17, 2026

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Lead Application Security Engineer - Pentester

Veeam Software

Full-time|On-site|Warsaw, Poland

At Veeam Software, we are committed to being the leading Data and AI Trust Company. Our focus is on empowering organizations to effectively manage, secure, and understand their data and AI capabilities, ensuring resilience and enabling safe AI scalability. As pioneers in data resilience and security posture management, we are strategically positioned at the intersection of identity, data, security, and AI risk. With our headquarters in Seattle and a presence in over 30 countries, we proudly protect more than 550,000 customers globally, earning their trust to keep their operations running seamlessly. Join us in our journey to innovate and make a significant impact for some of the world's most prominent brands.About the RoleAs a Lead Application Security Engineer (Offensive Testing), you will spearhead penetration testing and Dynamic Application Security Testing (DAST) for our Veeam Data Cloud offerings. Utilizing Burp Suite and the latest web/API testing methodologies, you will identify genuine exploitable vulnerabilities, prioritize risks, and collaborate closely with engineering teams to ensure effective remediation.Your role will also involve enhancing testing tools and methodologies to streamline processes, helping teams avert recurring vulnerabilities, particularly in areas such as authentication, authorization, session management, and tenant isolation.What You’ll DoLead offensive testing initiatives: strategize the scope, depth, and frequency of tests; generate clear, consistent reports, and develop reusable playbooks.Conduct manual penetration testing (primary focus): assess web applications and APIs, especially around authentication/authorization, multi-tenant boundaries, and critical workflows; simulate realistic attack paths by chaining vulnerabilities.Utilize Burp Suite on a daily basis: replicate and validate findings using advanced features; create and maintain repeatable scopes, macros, and authenticated flows.Enhance and execute DAST processes: perform and refine authenticated scans, minimize false positives, and collaborate with CI/platform teams to scale scanning efforts and manage credentials efficiently.Drive vulnerability remediation: produce high-quality documentation, partner with engineering teams for fixes and retesting, and assist in preventing regressions; ensure that findings are logged with appropriate severity and SLAs.Contribute to long-term security improvement: identify recurring patterns and collaborate with teams to establish prevention strategies through standards, libraries, platform controls, and contributions to threat modeling/design reviews.What You’ll BringRobust experience in web and API penetration testing, with a strong emphasis on authorization vulnerabilities (IDOR/BOLA, privilege escalation, etc.).

Apr 1, 2026

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Mobile Application Manual Tester (SR)

Altersolutions

Full-time|On-site|Warsaw

Jan 24, 2025

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Senior Staff Backend Engineer for AI Applications

Bolt

Full-time|On-site|Warsaw, Poland

Join Bolt's Customer Support Automation team as a Staff Backend Engineer specializing in AI Applications. In this pivotal role, you will design and architect the foundational AI agent infrastructure that supports our automation solutions. Leverage your expertise to create multi-agent orchestration frameworks, execution engines, and evaluation pipelines that scale our Customer Support operations. If you are enthusiastic about agentic AI, distributed systems, and building high-performance platforms, this position is tailored for you.

Apr 15, 2026

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Application Engineer at WNS Global Services | Warsaw

WNS Global Services Inc.

Full-time|On-site|Warsaw,

Engage in continuous collaboration with Business Analysts throughout all phases of implementation projects (Design, Build, Test, Hyper Care) utilizing the SCRUM framework.Configure the Ivalua Buyer application based on the specifications provided by Business Analysts.Prepare and conduct Unit Tests to ensure application functionality.Perform System Integration and/or Regression Tests to validate system performance.Analyze and troubleshoot system bugs to ensure optimal performance.Assist the project team in creating project documentation as required by the Client.

Feb 17, 2026

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Senior Engineering Manager - AI Applications at altersolutions | Warsaw

altersolutions

Full-time|On-site|Warsaw

We are seeking a dynamic Senior Engineering Manager to lead a team of skilled engineers dedicated to developing cutting-edge AI-powered applications and infrastructure. In this pivotal role, you will engage in hands-on leadership, dividing your time between technical execution, strategic planning, and effective people management.You will oversee the entire employee lifecycle, from hiring and onboarding to performance evaluations, promotions, and, when necessary, offboarding. Cultivating a high-performing and motivated team culture is crucial to your success. You will work in close collaboration with fellow engineering managers, data scientists, and key stakeholders to ensure timely project delivery, maintain high technical standards, and align team objectives.Key Responsibilities:Lead and nurture a team of engineers through mentorship, coaching, and career development.Manage all aspects of team administration: hiring, performance evaluations, salary negotiations, and feedback processes.Establish priorities and drive the execution of AI-focused features and components.Serve as a liaison between engineering and business units, ensuring transparent communication and alignment.Promote operational excellence by implementing continuous improvements in CI/CD, monitoring, observability, and performance metrics.Collaborate on project roadmaps, architectural decisions, and overarching technical strategies.

Oct 9, 2025

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Manual Tester - Banking Applications | Tieto Tech Consulting | Warsaw

Tietoevry

Full-time|Hybrid|Warsaw

Join our dynamic QA team as a Manual Tester specializing in banking applications. Your focus will be on ensuring the quality of payments and SWIFT systems. We are looking for a meticulous professional with a deep understanding of financial systems, regulatory frameworks, and transaction workflows. The successful candidate will have hands-on experience in test planning, execution, and defect management. Key Responsibilities:Interpret business and functional requirements pertinent to banking and payment systems.Create and execute comprehensive manual test cases for end-to-end payment processes, including SWIFT message validation.Conduct regression, integration, and system testing across various environments.Collaborate effectively with developers, business analysts, and stakeholders to uphold quality and compliance.Utilize tools like JIRA, HP ALM, or similar to log, track, and manage defects.Verify data integrity and transaction accuracy across interconnected systems.Support User Acceptance Testing (UAT) and production validation as needed.Ensure that testing activities comply with banking standards and regulatory requirements (e.g., ISO 20022, AML, KYC).

Mar 3, 2026

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Apr 28, 2026

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Spontaneous Application | Join Our Team at Alter Solutions

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Jun 19, 2024

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Apr 28, 2026

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Senior UX/UI Designer for Mobile Applications at Saily

Nord Security

Full-time|On-site|Warsaw

Nord Security is seeking a Senior UX/UI Designer to join the Saily team in Warsaw. This position centers on shaping the user experience and interface for mobile applications. The main goal is to design interfaces that are both intuitive and visually appealing, supporting user engagement and satisfaction. Role overview This role involves working closely with cross-functional teams to develop and refine mobile app interfaces. The Senior UX/UI Designer translates user needs and research insights into practical design solutions, always keeping the end user in mind. What you will do Collaborate with teams across disciplines to create and improve mobile app interfaces Turn research findings and user needs into effective design concepts Conduct user research to better understand behaviors and preferences Gather feedback and use it to iterate on designs, raising product quality Requirements Proven experience designing UX/UI for mobile applications Ability to convert user insights into engaging, user-friendly designs Comfortable receiving feedback and iterating to improve results Strong collaboration skills with product, engineering, and other teams

Apr 28, 2026

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Senior Staff Machine Learning Engineer for AI Applications

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Apr 22, 2026

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Application Support Manager (L2/L3 Engineering) at EcoVadis | Warsaw

EcoVadis

Full-time|On-site|Warsaw

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Jan 13, 2026

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Senior Accountant – General Ledger

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Full-time|On-site|Warsaw - Poland

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Apr 15, 2026

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Full-time|On-site|Warsaw

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Jun 30, 2025

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