Windows Engineer | Senior | NordLocker

At NordLocker, we’re building encrypted cloud storage that puts privacy first.

We make it easy to store, sync, and share files—without exposing them to anyone else. Join the team behind a zero-knowledge platform that secures people’s data from their devices to the cloud.

Your impact? Helping people safeguard their data assets—privately, securely, and on their terms.

Main Responsibilities

Develop and maintain our flagship Windows desktop application that works with Windows File System;

Work across the full application stack, delivering best-in-class performance, security, and user experience;

Collaborate closely with developers, designers, QA engineers, and a Product Owner in a highly skilled and supportive team;

Use Microsoft technologies and tools to extend, optimize, and improve application functionality;

Actively participate in planning, design discussions, code reviews, and problem-solving sessions;

Explore and integrate technologies beyond .NET when needed to deliver the best solutions.

Core Requirements

5+ years of experience in software development as .NET(C#) Dev;

Solid understanding of WPF and creating Windows desktop applications;

Ability to work with Windows native APIs, with focus on performance, memory management and stability;

Good understanding of event streams, working with real time data and using reactive extensions to process it;

Solid foundation in OOP and design patterns — you design architecture that is clean, scalable, and maintainable;

Experience with unit testing, dependency injection, and robust CI/CD practices;

Strong problem-solving skills - able to quickly understand complex codebases, work with native APIs, and deliver solutions.

What We Offer

Sharpen your edge: training, mentorship, and room to grow — always.

Take the time you need: extra vacation days, sick days, and time off when life calls.

Get premium healthcare: private health insurance in Lithuania and Poland — fully covered.

Protect your peace: enjoy free subscriptions to Calm, Headspace, and Mindletic, and our own resilience and mindfulness trainings.

Own your fitness: in-house gyms, sport cards, online workouts, and personal guidance — on us.

Pack your bags for workation: experience our company-wide trip abroad to the fullest.

Work from anywhere: work from wherever keeps you in the zone.

Celebrate your milestones: birthdays, weddings, and new family members — all deserve a gift.

Parent with ease: children’s summer camps and flexibility around the schedule — because parenting never pauses.

Join the party: team building and company events people talk about for months.

Unlock Cyber City: coffee bar, open gyms, kids’ room, music room, massage chairs — our Vilnius HQ is yours to enjoy.

Kindly refer to our Privacy Notice for Recruitment Candidates for comprehensive information regarding our data handling procedures throughout recruitment processes.

We expect all candidates to provide accurate and complete information during the recruitment process. While limited use of AI tools to refine application materials is acceptable, candidates remain fully responsible for ensuring that their submissions reflect their own qualifications, skills, and experience. Any failure to do so may negatively affect participation in the recruitment process. If broader AI assistance is allowed for a particular role or stage, we’ll let you know in advance.

By submitting your application, you acknowledge that it may be processed using automated tools for evaluation purposes. As part of our recruitment process, we may use an AI-based application review tool to help assess applications based on skills and experience relevant to the role. This technology is used to support - not replace - human decision-making, and every application is ultimately reviewed by a recruiter.

If you would like more information about how AI is used in this process or wish to exercise your rights under applicable data privacy laws, please contact us at [email protected] . Should you prefer to opt out of the automated evaluation, please submit your application directly to [email protected] .