Mid Level Windows Engineer C Net Applications jobs in Vilnius – Browse 322 openings on RoboApply Jobs

Mid Level Windows Engineer C Net Applications jobs in Vilnius

Open roles matching “Mid Level Windows Engineer C Net Applications” with location signals for Vilnius. 322 active listings on RoboApply Jobs.

322 jobs found

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Nord Security logo
Full-time|On-site|Vilnius

Join the NordLayer team as we revolutionize cybersecurity for businesses worldwide.NordLayer offers a flexible, toggle-ready platform that empowers modern teams to work seamlessly, free from security concerns. Trusted by over 11,000 companies globally, our solution integrates effortlessly into any tech stack, safeguarding users wherever they are.Your Role: P…

Apr 12, 2026
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NordLayer logo
Full-time|On-site|Vilnius

Join NordLayer as we innovate cybersecurity solutions that grow with our clients.Our platform is designed for seamless integration into any tech stack, enabling modern teams to excel without the burden of security concerns. With the trust of over 11,000 global companies, NordLayer provides robust protection for users across the globe.Your contribution? Ensure businesses remain secure and progressive with our advanced network security solutions.As a member of the Desktop Applications team, you will collaborate with a dynamic group of skilled engineers dedicated to developing next-generation secure networking solutions tailored for businesses. We emphasize teamwork and innovative thinking, focusing on security while tackling complex challenges.

Dec 3, 2025
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Nord Security logo
Full-time|On-site|Vilnius

Join the forefront of cybersecurity innovation!Are you a proactive problem-solver ready to explore new horizons? Become a vital member of the team powering Threat Protection Pro, the groundbreaking NordLynx protocol, and the fastest VPN in the world—tools that empower individuals to reclaim their privacy, security, and control online.Your contribution? Enabling millions to restore their online security, privacy, and data ownership.Key ResponsibilitiesEnhance the NordVPN Windows desktop application, ensuring all features function seamlessly;Collaborate with a multidisciplinary team of developers, designers, QA specialists, and a Product Owner to innovate and maintain software for our globally recognized product;Utilize Microsoft’s tools and technologies to expand and refine our product’s capabilities—it's all about the code!Engage in a team-oriented approach to software development and problem resolution;Employ technologies and programming languages beyond .NET when necessary.Essential Qualifications4+ years of professional experience in software development as a .NET (C#) developer.Strong grasp of object-oriented programming principles.Familiarity with WPF, UWP, or similar XAML-based frameworks.Solid understanding of native Windows programming principles and APIs.Proficient in source code analysis and optimization techniques.Experience with unit testing and general software testing practices.Ability to swiftly adapt to changes and effectively tackle edge cases.Technologies You Will Utilize.NET/C#;XAML (WPF);MVVM;IPC;OpenSearch.

Apr 12, 2026
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Nordsec logo
Full-time|On-site|Vilnius

Join the forefront of digital security with the world's leading VPN provider. Are you a proactive problem-solver ready to shape the future of online privacy? Become a vital part of our innovative team that developed Threat Protection Pro, the NordLynx protocol, and the fastest VPN service available—solutions that empower users to regain control over their online security and data privacy.What will you achieve? You will contribute to helping millions of users reclaim their online security, privacy, and data integrity.

Mar 9, 2026
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Teltonika logo
Full-time|Hybrid|Vilnius, Vilnius City Municipality, Lithuania

Join our innovative R&D team as a Senior or Mid-Level Software Engineer, where you will take charge of enhancing and maintaining existing device programming tools tailored for automotive applications. Your expertise in device communication and firmware programming will be essential, as our software directly interfaces with hardware for firmware flashing, updates, and configuration.Your primary responsibility will involve the modernization of our legacy Delphi 7-based device programming tools, transitioning them to a robust C# / .NET architecture. These applications are pivotal for programming, updating, and configuring automotive device firmware while ensuring reliable communication through various interfaces. Your goal will be to establish a clear, maintainable, and scalable architecture that supports long-term development.Key Responsibilities:Own and enhance existing device programming tools for hardware device configuration and updates.Lead the migration of legacy tools from Delphi to a modern C# / .NET framework.Design, maintain, and optimize software solutions for device communication and firmware workflows.Implement and manage communication layers for hardware devices via Serial (COM), USB, and other interfaces.Refactor existing codebases to ensure clarity, maintainability, and scalability.Diagnose and resolve complex issues related to device communication and firmware interactions.Collaborate closely with firmware, hardware, and R&D engineers to ensure effective device programming and diagnostics.

Mar 16, 2026
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Speechify logo
Full-time|Remote|Vilnius, Lithuania

About Speechify Speechify builds tools that turn written content into audio, helping people read and learn without barriers. More than 50 million people worldwide use Speechify’s text-to-speech products to convert PDFs, books, Google Docs, news articles, and websites into spoken word. The product suite covers iOS, Android, Mac, a Chrome Extension, and a Web App. Recognition includes Google’s Chrome Extension of the Year and Apple’s 2025 Design Award for Inclusivity. Our Team Nearly 200 people work at Speechify, all remotely. The team includes frontend and backend engineers, AI research scientists, and professionals from companies like Amazon, Microsoft, and Google. Others have joined from top PhD programs (including Stanford) and high-growth startups such as Stripe, Vercel, and Bolt.

Apr 20, 2026
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Hostinger International Ltd. logo
Full-time|On-site|Vilnius

Join the innovative team at Hostinger as a Mid-Level Python Engineer! In this role, you will leverage your Python expertise to develop and enhance our cutting-edge web solutions. Collaborate with cross-functional teams to design scalable applications that improve user experience and drive our mission forward.

Feb 25, 2026
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Nordsec logo
Full-time|On-site|Vilnius

Join our dynamic team at Nordsec as a Mid-Level Software Engineer, specializing in Python development for our Quality of Service (QoS) team. In this role, you will be responsible for designing, implementing, and maintaining high-performance software solutions that enhance QoS across our platforms. You will collaborate closely with cross-functional teams to ensure our technology meets the highest standards of quality and reliability.We are looking for innovative thinkers who thrive in a collaborative environment and are eager to tackle challenging problems. If you are passionate about software engineering and dedicated to improving user experiences through technology, we want to hear from you!

Apr 10, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join us at Nord Security as we pave the way for a more secure cyber world.Our mission is to empower individuals and organizations to reclaim their online security, privacy, and data. Whether it's through our cutting-edge VPN services, user-friendly password managers, insightful threat intelligence, or innovative eSIM solutions for travelers, our talented teams are dedicated to transforming intricate challenges into trusted solutions, embraced by millions across the globe.In this pivotal role, you will be instrumental in helping people take ownership of their digital lives.

Feb 6, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Role overview This Mid-Level Office Manager position at Nord Security focuses on keeping daily operations efficient and organized in the Vilnius office. The role blends resource management, administrative support, and practical help for team members to create a productive work environment. What you will do Manage office resources and keep supplies stocked Coordinate administrative tasks and manage schedules Assist staff with daily needs and requests Contribute to a positive company culture through daily interactions Identify opportunities to make office operations more efficient Location The position is based onsite in Vilnius.

Apr 27, 2026
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Oxylabs logo
Full-time|On-site|Vilnius

Oxylabs creates proxy and web data scraping solutions for a diverse client base, including Fortune 500 companies. The company’s team of over 500 professionals tackles complex data challenges and supports large-scale operations. Role overview This Mid-Level PHP Developer position is based in Vilnius. The role centers on maintaining and enhancing the infrastructure that powers Oxylabs’ global data services. The systems managed in this role process significant volumes of data for clients worldwide, requiring careful attention to reliability and performance. Key systems and technologies Ceph storage handling over 6 petabytes of data Monthly data traffic exceeding 60 petabytes Service infrastructure managing more than 300,000 requests per second Kafka streaming with 500,000 messages per second This role focuses on supporting and improving the core systems that keep data flowing smoothly at scale.

Apr 21, 2026
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Oxylabs logo
Full-time|On-site|Vilnius

Join our dynamic team of over 500 skilled professionals at Oxylabs, where we create innovative proxy and web data scraping solutions for some of the most recognized brands worldwide, including Fortune 500 companies.What You Can Expect:As a Mid-Level PHP Developer, you will tackle intricate challenges and manage our extensive infrastructure, which supports over 60PB of monthly data traffic. Your role will involve working with significant metrics, such as: - 6PB+ Ceph storage - 60PB+ monthly data traffic through our systems - 300k+ service requests processed per second - 500k+ Kafka messages streamed per second

Feb 23, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Nord Security is looking for a Back Office Manager (Junior to Mid Level) based in Vilnius. This position plays a key part in supporting the company's daily operations and ensuring that essential business functions run smoothly behind the scenes. Main responsibilities Oversee administrative processes that support business activities Manage team workflows and coordinate tasks across different departments Monitor compliance with company policies and procedures Find and implement ways to improve back office systems What helps people thrive in this role Strong organizational skills and a proactive approach to work Interest in developing new skills and growing within the company Comfort working in an environment where priorities may change This role is well suited for someone interested in building experience in business operations while contributing to the ongoing success of Nord Security.

Apr 28, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join the forefront of digital security with the world's most advanced VPN solution.As a proactive and innovative problem-solver, you'll be part of the team that developed Threat Protection Pro and the NordLynx protocol, ensuring that our users have access to the fastest and most secure VPN available. Your mission? Empower millions to regain control over their online security, privacy, and data.Your Role: Drive the success of our mobile affiliate marketing initiatives by managing partnerships and optimizing campaign performance.

Apr 12, 2026
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Nordsec logo
Full-time|On-site|Vilnius

Join the forefront of online security! Are you a passionate problem-solver seeking to make a difference? Be a part of the innovative team behind Threat Protection Pro, the cutting-edge NordLynx protocol, and the fastest VPN globally—empowering users with privacy, security, and control over their online experience.Your Contribution: Assist millions in reclaiming their online security, privacy, and data.The Low-Level Team is tasked with developing essential components for various platforms, including Windows, Linux, Android, and Apple.

Feb 25, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join NordLayer in redefining cybersecurity that adapts to modern business needs.Our innovative platform empowers teams globally, eliminating security concerns and enabling seamless operations. Over 11,000 companies trust NordLayer to integrate into their tech landscapes and safeguard users worldwide.Your Role: Contribute to enhancing security and operational efficiency through advanced network security solutions.About the Infrastructure Department: We are committed to driving change, offering essential support, and delivering cutting-edge software-defined solutions.As a DevOps Engineer, you will play a vital role in maintaining, optimizing, and automating our infrastructure and CI/CD processes. Collaborate with experienced engineers and teams across functions to implement best practices in DevOps, support scalable cloud solutions, and ensure efficient software delivery. This role presents an exciting opportunity to develop your skills in a fast-paced environment while contributing to infrastructure enhancement initiatives.

Apr 12, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join Saily, an innovative leader in mobile connectivity, dedicated to eliminating the hassle of staying connected while traveling. We offer lightning-fast, secure mobile data across 200+ destinations without any roaming fees or plastic SIM cards. With millions of paying customers and countless travelers exploring Saily at any given moment, we are on a mission to enhance user experiences.At Saily, we cultivate an AI-native Product Engineering culture that empowers our engineers to take ownership of the entire product lifecycle, from ideation to production. Our AI agents streamline coding processes and tackle repetitive tasks, allowing engineers to focus on impactful solutions. Collaboration, curiosity, and continuous improvement are at the heart of our operations, with a customer-centric approach guiding our decisions.We prioritize personal and professional growth, valuing contributions over rigid hierarchies, and ensuring that our team members have the autonomy to excel in their roles. Join us in creating seamless, connected journeys for our customers.

Apr 12, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join the forefront of digital security with the world's leading VPN provider. Are you a passionate problem-solver eager to make a difference? Become a member of our innovative team responsible for developing Threat Protection Pro, the NordLynx protocol, and the most efficient VPN available. Our mission is to empower users with unparalleled privacy, security, and control over their online experiences.Your Contribution: Play a vital role in helping millions reclaim their online security, privacy, and data integrity.

Apr 7, 2026
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Nordsec logo
Full-time|On-site|Vilnius

Join our dynamic team at Nordsec as a Mid-Senior DevOps Engineer. In this role, you will play a pivotal part in enhancing our deployment processes, working collaboratively to optimize our infrastructure and automate workflows. You will have the opportunity to engage with cutting-edge technologies while driving efficiency and stability across our systems.

Mar 16, 2026
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Nord Security logo
Full-time|On-site|Vilnius

Join the forefront of digital privacy with us!As part of the innovative team behind Threat Protection Pro, the NordLynx protocol, and the world's fastest VPN, you will empower millions of users to reclaim their online security, privacy, and control.Your role: You will be integral in developing robust components across multiple platforms, such as Windows, Linux, Android, and Apple.Main Responsibilities:Craft clean, maintainable, and efficient code using Rust.Tackle complex challenges in security, performance, privacy, and networking at scale.Adhere to clean code principles and the highest industry standards.Collaborate with Low-Level Team members to produce secure, high-performance software solutions.Engage and contribute to the open source community surrounding the libtelio library.Ensure code quality by leaving it in a better state than you found it.

Apr 12, 2026

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