About the Position

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🇺🇦 We bring our capabilities to all institutions that help protect Ukraine across critical infrastructure, defence, and government.

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HR Coordinator

Ukraine・Kyiv, Lviv, Hybrid・Full-time

Keep recruitment, onboarding and people operations running smoothly as our team continues to grow.

The Opportunity

This position is exclusively for Ukrainian residents within Kyiv or Lviv.

We’re expanding our HR team and looking for an HR Coordinator to run day-to-day recruitment and onboarding processes. Both processes are already well established, so you’ll have clear workflows and documentation from day one. Alongside these two core areas, you’ll also support other People Operations activities. As you settle into the position, you’ll have the opportunity to get involved in additional People Operations projects.

Responsibilities

Work on Recruiting (30–50% of your time)

• Publish vacancies across job boards and coordinate publishing across other recruitment channels.
• Screen incoming applications.
• Coordinate interviews with candidates and hiring managers.
• Maintain accurate candidate records and keep candidates informed throughout the recruitment process.
• Collect and communicate interview feedback.
• Prepare offers and coordinate the pre-onboarding process.
• Contribute to improving recruitment processes and candidate experience.

Conduct Onboarding

• Coordinate the onboarding process for newcomers.
• Coordinate onboarding meetings, access requests and other administrative activities.
• Ensure onboarding tasks are completed on time.
• Support newcomers during their first months with the company.

Support Other People Operations Tasks

• Support the organisation of internal online and offline events.
• Help coordinate business trips.
• Assist with various People operations projects as needed.

Requirements

• At least 1 year of experience coordinating recruitment or onboarding in a position such as HR Coordinator, Recruitment Coordinator, Project Coordinator or similar.
• Understanding of the candidate journey from the first application to the end of onboarding, and why each stage matters.
• Ability to write clear messages, updates and proposals that other people can quickly understand and act on.
• Ability to keep track of multiple ongoing tasks, deadlines and stakeholders.
• Ability to spot missing information, inconsistencies and small mistakes before they become bigger problems.
• Comfortable working with documented processes and checklists, while recognising that different people and cases sometimes need a different approach.
• Intermediate English (B2) or higher.

Nice to Have

• Comfortable exploring unfamiliar tools, reading documentation and learning new technical concepts when needed.
• Experience organising internal events.
• Familiarity with online facilitation tools.
• Experience working in an IT company.

We Offer

Unique Area of Expertise

• Difficult and interesting work at the forefront of cryptography: zero knowledge proofs, private information retrieval, smpc and other fascinating problems in the applied field. We work with a full cycle of modern cryptographic problems: from scientific papers and mathematics, test implementation and PoC, to production-ready implementation of cryptographic controls in software.
• Public track record in the Open Source part of the products and the opportunity to participate in research projects with companies that are moving different parts of applied cryptography in finance, distributed computing and privacy-enabling technologies forward.
• Work at the intersection of technologies: cryptography, software engineering, information security. You won’t be bored :)
• A sense of meaning and responsibility for those who have been tamed - your code will work for many years in large and small systems, from data protection in power plant management to advanced cryptocurrencies.

Environment

• Friendly and experienced team: smart people to learn from, great people to build with. Each of us is unique, we value and support each other.
• An atmosphere that motivates you to grow and get smarter every month, a healthy ratio of routine / experimentation.
• Trust: schedule, reporting, bureaucracy is kept at reasonable minimum. We hire smart people and trust them to do the right thing. When things go wrong, we help rather than punish.
• Shared decision making.
• Friendly to humans: not just a formal vacation and sick leave quota. Feel like your mental or physical wellbeing needs care? Take some time off. Feel like working a few days from home? Sure. As long as you’re in line, we are here to support you when you’re not.

Growth

• Team that facilitates internal learning and growth all the time.
• Interesting technologies to work with - sometimes, even unique ones (we design applied cryptography schemes and techniques and novel ways to use them).
• Ability to grow into one of the fastest growing industry sectors (computer security) with a team of experienced professionals.
• Management attention to help you improve upon your personal goals (through regular 1:1s and mentoring).

Benefits

• Competitive compensation with flexible bonus scheme.
• Sick leaves, 21 vacation days a year, extra days off - according to agreements and laws.
• Conferences, books, courses - we encourage learning and sharing with the community. Our team members share a lot in talks, workshops and blog posts.

Not Sure but Considering? Talk to Us

If you see yourself fit but a few things are off - don’t hesitate to talk anyway. It might be that your unique combination of skills and knowledge would be perfectly fitting for our environment, but we both just don’t know it yet.

Why Work at Cossack Labs?

Some companies prioritise talent and value proposition, while others understand business and would take any job that pays well. However, only few companies choose to specialise in difficult tasks as their primary competency.

We take on difficult jobs, we take mission-critical software and make it mission-secure.

• Virtualise OT infrastructure securely in the presence of active adversaries, preventing them from accessing the susceptible nation-wide network? ✓ Check.
• Provide immediate application security and infrastructure security guidance for mission-critical application that will be deployed on thousands of devices on the front-line tomorrow? ✓ Check.
• Validate counter-reverse engineering protections for power grid hardware to ensure that previously air-gapped environments were safe to open up to the outside world? ✓ Check.
• Ensure that software platforms for exchange of sensitive documents actually have a top-tier SSDLC programme that supplements missing capabilities and builds out processes? ✓ Check.

We operate as a lean core team and a diverse network of experts. The finest people you may work with include PhDs in information security and cryptography, infosec community standard contributors, in-depth experts in rare security topics, and business-centric security engineers with broad experiences. Some of your teammates have worked in infosec since the 1990s and saw the industry grow from nothing. Some of them helped write standards that govern security around you. Maybe someone’s work actually keeps the lights up while you’re reading this?

Our core engineers go through extensive indoctrination and training to become disciplined, stringent, self-sufficient field unit who owns the outcomes rather than just showing up for work.

As you grow into the Cossack Labs engineer, you’ll work on slow-paced projects to learn and improve, internal projects to innovate and build tools, and of course a few fires, because no smooth sea can make a skilled sailor. You’ll discover what works for you and what you need to learn.

We help innovators who are launching new venues of civilisation while facing significant security risks in becoming more secure and resilient. Customers trust us to achieve their business goals, not merely address gaps someone else has to identify first.

If this is a challenge you’re up to, let's talk!

How to Apply

We'd like to get your CV to start a conversation. A supporting letter explaining your story, your interest in cryptography, what you have done in the past and what kind of work you find interesting would help, but is not necessary.

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