Jobs

PaiDefence is a British-Ukrainian DefenseTech company building air defence systems already deployed on the frontlines. We push real technology to the battlefield — not demos, not paper specs.

We are looking for a Lead Hardware & Systems Engineer to own the full hardware domain — from system architecture through to serial production and stable field operation. You will drive our prototype to a production-ready device, coordinate mechanical and electronics engineers, and set up small-series manufacturing with potential to scale.

Responsibilities

• Architecture & Design — system hardware architecture, component and enclosure selection, thermal management, sealing, rugged design decisions, and technical specifications
• Hands-on Development — hardware bring-up, testing, verification, reliability analysis, and fault investigation
• Industrial Readiness — prototype-to-DFM/DFA transition, production documentation, contractor management, and quality control

• System Integration — integration of hardware with electronics, sensors, and antenna systems; cable architecture; field power; uptime and health monitoring

   

Requirements

• Proven experience in hardware system development
• Track record of taking a product from prototype to serial production
• Strong system architecture skills and hands-on hardware development
• Familiarity with industrial-grade or mil-tech standards

• Understanding of mechanical design and CAD tools

   

Nice to Have

• Experience with rugged solutions for field or industrial environments
• Background in DefenseTech, aerospace, or adjacent domains
• Familiarity with RF components or antenna systems

• English — B1+ (technical documentation, occasional communication)

   

What We Offer

• Real impact — your decisions directly affect the reliability of air defence systems in the field
• Full ownership of the hardware domain from day one
• Deep-tech engineering challenges that don’t exist in the civilian sector
• Office in central Kyiv, 3 minutes from the metro
• Full-time, standard business hours; some tasks may require involvement outside the usual schedule (field testing, critical updates)

Pai Defence is a British-Ukrainian air defence tech company building distributed systems across the frontline. 
Our core value is impact for Ukraine: we build technology that makes a real difference on the actual battlefield, not in labs or on paper specs. We operate with a deep-tech mindset, pushing new technologies where engineering rigor truly matters.
 

We’re looking for an experienced Linux engineer whose primary responsibility will be integrating various SDR (Software Defined Radio) devices into our software platform. 
This is a role for those who love working at the hardware-software boundary, understand how data travels from physical ports to high-level applications, and can make that path as fast and reliable as possible.
 

What you’ll do:

• Integrate different SDR models into a unified Linux-based ecosystem
• Work with vendor SDKs and develop high-performance userspace applications
• Optimize high-throughput data processing in real-time
• Write clean, stable, and performant code in C++ or Python
• Debug inter-process communication, manage buffering and latency

Requirements:

• 5+ years of professional Linux systems experience
• Linux Power User: comfortable in terminal, understands kernel-space vs user-space, knows systemd and driver configuration
• Hardware Interface Expert: hands-on experience with USB 2.0/3.0, Ethernet, or other high-throughput interfaces
• Data Stream Architect: understands IPC principles, ring buffers, memory overflow prevention, and latency minimization for raw data transmission
• C++ Developer: writes reliable code that doesn’t crash on the first unexpected packet from hardware
• English: B2 or higher

Nice to have:

• SDR experience: familiar with RTL-SDR, HackRF, USRP, or has GNU Radio experience
• Experience with ROS/ROS2 (node development, topics/services)
• Understanding of data transmission protocols and digital signal processing (DSP)
• Hobbies related to electronics, radio communication, or robotics

We offer:

• Meaningful, high-impact work in Ukraine’s air defense domain
• Deep-tech engineering challenges where rigor and performance matter
• High ownership and autonomy from day one
• Work format: Kyiv office with occasional remote days
• Senior engineering team with direct communication and minimal bureaucracy
• Full-time position with standard hours; occasional off-hours for testing/updates

We are a British—Ukrainian air defence tech company building distributed systems across the frontline. We are looking for a Production ML Researcher / Data Engineer to take ownership of the data and ML infrastructure behind our current and future computer vision products.

Our core value is impact for Ukraine: we build technology that makes a real difference on the actual battlefield, not in labs or on paper specs. We operate with a deep-tech mindset, pushing new technologies where engineering rigor truly matters. We value ownership and responsibility—people who execute, deliver, and stand behind the results.

We especially value engineers with strong analytical thinking and proven problem-solving skills — such as participation in mathematical/programming olympiads or experience contributing to open-source projects.
 

Key Responsibilities

• Build production-grade data collection, labeling, and dataset curation pipelines for CV models
• Design workflows for annotation, quality control, and continuous dataset improvement
• Set up model deployment, experiment tracking, versioning, and monitoring
• Support training and inference pipelines in production environments
• Run experiments with different CV models and approaches, evaluate results, and improve system performance

• Help define the architecture and engineering standards for ML infrastructure across product lines

   

  Requirements:

• Strong background in Machine Learning / Computer Vision
• Hands-on experience building data pipelines for ML systems
• Experience organizing labeling workflows and maintaining dataset quality
• Practical knowledge of model deployment, MLOps, and production ML
• Strong Python skills and experience with PyTorch or similar ML frameworks
• Ability to move between research and engineering: experiment, evaluate, deploy, improve
• Strong analytical thinking and solid foundations in linear algebra, probability, and statistics

• English: B2 or higher (working w/ international team members)

   

  Nice to Have

• Experience in DefenseTech, SigInt, or embedded systems
• Understanding of RF-related data or sensor-driven ML systems
• Experience with real-time or low-latency ML pipelines
• Background in active learning, human-in-the-loop labeling, or continuous retraining workflows

• Open-source contributions or strong олимпиадное / competitive programming background

   

  We Offer

• Meaningful and high-impact work in the AIR defense domain
• Practical R&D environment with real autonomy
• Direct influence on technical decisions and the product direction
• Work in an experienced senior engineering team
• Сlear, fast, senior-to-senior communication with a minimum number of team meetings
• Office in the center of Kyiv (available for onsite work when required)
• Full-time position
• Standard business hours; some tasks may require involvement outside the usual schedule (testing, critical updates)

We are currently seeking an IT Support Specialist to join a manufacturing company specializing in radio electronics. You will be responsible for ensuring the stable and secure operation of the IT infrastructure, providing user support, and implementing modern solutions to improve internal processes.

Responsibilities

• User support (Windows/macOS): access, VPN, RDP, printers, Microsoft 365.
• Installation, configuration, and maintenance of workstations and peripherals.
• Participation in onboarding/offboarding: accounts, equipment, access.
• Maintenance of equipment database, documentation updates.
• Basic diagnostics of problems, escalation of complex incidents.

Requirements and qualifications

• Experience working with Windows 11 and macOS (installation, configuration, and basic troubleshooting).
• Understanding of Active Directory principles: user account creation/deactivation, security groups, access policies.
• Basic knowledge of Microsoft 365 / Azure AD.
• Experience with VPN clients.
• Knowledge of configuring and maintaining network printers, drivers, and print queues.
• Ability to install and maintain user hardware (laptops, monitors, docking stations, peripherals).
• Basic diagnostic skills for hardware and software issues.
• Understanding of asset management processes: inventory, asset tracking, database maintenance.
• Basic understanding of networking technologies (TCP/IP, DNS, DHCP, VLAN).
• Strong customer service and communication skills; ability to explain technical issues in simple terms.
• Attention to detail, responsibility, and reliability.
• Ability to work effectively in a team and follow SLA guidelines for incident resolution.
• Willingness to learn and grow within the field of system administration.
• English level: Intermediate or higher — ability to communicate with users and read technical documentation.

Nice to have

• Understanding of onboarding/offboarding processes for employees.
• Experience with Intune / MDM or similar device management systems is a plus.

This position offers a unique opportunity to ensure the smooth operation of the IT environment, support a growing team, and implement new technological solutions.

What is the purpose of this position?

We are looking for a Middle+/Senior C++ engineer with 4+ years of commercial experience. Working alongside other engineers, you'll design, build, and maintain scalable solutions, work closely with business stakeholders and analytics teams in miltech/deeptech projects. 

Qualifications you`ll need to bring:

• 4+ years of commercial experience with C++
• Deep understanding of OOP, design patterns, and SOLID principles 
• Excellent experience with Git
• Knowledge of databases (SQL/NoSQL)
• Experience with multithreading, synchronization, and concurrent programming
• Knowledge of data structures and algorithms
• ​​Familiarity with modern and upcoming standards
• Ability to work self-managing and autonomously
• Excellent communication skills for direct interaction with a customer
• English level - Upper-Intermediate

We offer:

• Remote Work Environment. Work from anywhere and be part of a geographically diverse team
• Stay Ahead of the Curve. Work with cutting-edge technologies
• Possibility of payment by PE account, Payoneer, or Wise
• Bonus & Referral system
• Paid 12 vacations and 5 sick leaves per year
• Flexible hours 
• Compensation program for purchasing new laptops
• Paid professional certifications & educational courses
• Paid English classes
• Friendly atmosphere with quarterly team building
• No bureaucracy

Ready to try your hand? Do not pull the cat’s tail, send your CV without a doubt! 

About the Role

We are looking for a skilled C++ Software Engineer to join our team and contribute to the development of complex software systems focused on data processing and mission-critical workflows.

In this role, you will be involved in designing, building, and improving applications, working closely with user requirements, and ensuring reliable system performance in real-world environments.
 

Key Responsibilities

• Design and develop software applications for data processing and specialized system workflows
• Analyse user requirements and translate them into technical solutions
• Test and validate system deployments in customer environments
• Identify, troubleshoot, and resolve software issues
• Contribute to continuous improvement of system performance and reliability
   

Required Qualifications

• Practical experience with C++ (17)
• Strong knowledge of STL and Boost (especially the ASIO part) libraries
• Experience designing system architecture, including multithreading and distributed systems
• Familiarity with version control systems (Git)
• Basic knowledge of CMake
• Proactive, reliable, and able to work independently
• Ability to read and understand technical documentation in English
   

Nice to Have

• Knowledge of TCP/UDP protocols
• Python knowledge
• Experience with PostgreSQL
• Understanding of signal processing (audio, video, etc.)
• Experience with parallel computing (SIMD, OpenMP)
• Familiarity with Qt, JavaScript, TypeScript, or React
• Experience with OpenGL (3.0+) and GLSL
• Experience working with distributed and heterogeneous data systems

We are looking for a Computer Vision Engineer with solid ML/DL experience to join our team on challenging projects.
We consider engineers at Middle and Senior levels - tasks and responsibilities will be adjusted accordingly. 

Required Qualifications:

• 3+ years of experience in computer vision
• High proficiency in Python
• Strong experience with deep learning and the PyTorch framework for computer vision tasks
• Research experience in computer vision with a focus on delivering results
• Ability to work independently or within a small team, with a strong sense of ownership over results

Nice to Have:

• Experience with deep learning solutions for detection, tracking, image retrieval, and segmentation tasks
• Understanding of geometric computer vision principles
• Model optimization: quantization, pruning, neural network compilers
• Hands-on experience implementing low-level CV algorithms
• Experience with sensor fusion (IMU, magnetometer, GNSS, camera)
• Knowledge of C++

As a DevOps, you will play a vital role in ensuring the smooth operation and optimization of our network of IoT devices and Linux server infrastructure. Your expertise will be crucial in planning, provisioning, implementing automation, and safeguarding the security and performance of our systems.

Responsibilities:

Perform Linux system administration tasks, including server setup, configuration, and maintenance.

Monitor server performance, resource utilization, and troubleshoot potential issues to ensure optimal operation.

Implement security measures, configure firewalls, and manage user permissions to ensure robust system security.

Develop and maintain automation scripts using Bash or Python to streamline repetitive tasks and improve efficiency.

Collaborate with the development team to set up and maintain Continuous Integration/Continuous Deployment (CI/CD) pipelines for software deployment and testing.

Manage network configurations, interfaces, and routing to maintain seamless connectivity.

Set up and maintain monitoring and log analysis tools for proactive system monitoring and issue detection.

Implement backup strategies and disaster recovery plans to safeguard data and ensure business continuity.

Collaborate with cloud infrastructure if applicable, and maintain a cohesive hybrid environment if required.

Stay up-to-date with the latest trends and technologies in the Linux and DevOps domain, incorporating relevant innovations into our infrastructure.

Requirements:

2 years.

User Management Service.

RADIUS (LDAP).

Proficient in Linux system administration, with hands-on experience in aarch64 architecture.

Strong scripting skills in Bash, Python for automation and configuration management.

Familiarity with configuration management tools such as Ansible

Experience with networking concepts, protocols (TCP/IP, DHCP, DNS), and firewall configurations.

Knowledge of monitoring tools like Nagios, Zabbix, or Prometheus, and log management tools like ELK stack is advantageous.

Prior exposure to CI/CD pipelines and Git version control is desirable.

Ability to analyze and troubleshoot complex technical issues, providing effective solutions.

Strong security mindset with the ability to implement robust security measures.

Proactive and adaptable, able to thrive in a dynamic startup environment.

Communication and teamwork skills, collaborating effectively with cross-functional teams.

About the Role

The Chief Designer holds ultimate responsibility for the technical integrity, reliability, and innovation of the rocket system — from concept through flight testing. This is a position for an engineering leader who combines deep technical expertise with the ability to manage a team and drive a complex project to completion.

Responsibilities

• Define the technical strategy and system architecture; approve key design decisions
• Lead conceptual and detailed design processes; coordinate subsystems (propulsion, avionics, structures)
• Drive adoption of innovative technologies and materials to improve performance and reduce costs
• Lead and mentor the engineering team: task allocation, quality control, and professional development
• Plan project schedules, manage technical risks, and report status to senior leadership
• Develop and approve ground, bench, and flight test programs, including success criteria
• Oversee subsystem integration, analyze test results, and make critical design decisions
• Ensure complete design and operational documentation; maintain compliance with industry standards and safety regulations

Requirements

• Higher technical degree in aerospace engineering, rocket engineering, or a related discipline
• 5+ years of experience in the design and development of rocket or aerospace systems
• Strong knowledge of subsystem design principles: propulsion, avionics, and structural engineering
• Proven experience managing engineering teams and full-cycle technical projects
• Solid understanding of testing, validation, and certification processes for complex systems
• Willingness to travel: test range in Kyiv Oblast and production sites across Ukraine

What We Offer

• The opportunity to lead development of rocket systems with real strategic impact
• Full authority as Chief Designer — critical technical decisions are yours to make
• A team of highly qualified engineers and access to a modern testing infrastructure
• Competitive compensation — discussed individually
• Full-time position based in Kyiv, with travel to test range and production facilities

About Us

We are a modern defense-sector manufacturing company building high-tech solutions with real strategic impact. Our work is grounded in engineering excellence, rigorous quality standards, and a systematic approach to development. We operate on principles of responsibility, precision, confidentiality, and teamwork — and we invest continuously in technology and production modernization so every specialist sees the direct result of their contribution.

Role Purpose

Support the full engineering cycle across research, development, and product improvement. The role bridges technical expertise, requirements analysis, and component-level work to deliver efficient, reliable, and competitive solutions.

Responsibilities

Component Selection

• Select components based on required technical parameters and mission constraints

Firmware Development & Adaptation

• Build firmware from source for specific camera chipsets; disable unused modules to reduce load and improve boot time
• Configure H.264/H.265 video encoder parameters for optimal balance of image quality, bitrate (radio/fiber transmission), and minimal latency — critical for FPV applications
• Configure, modify, and maintain flight controller firmware (Betaflight, ArduPilot) per hardware and mission requirements
• Write low-level MCU code; manage peripheral devices (sensors, ESCs, radio receivers)
• Optimize system performance to ensure minimal latency and high update rates for precise control

Integration

• Develop or implement bidirectional communication between devices and the flight controller (UART, SPI) for telemetry and OSD data overlay
• Program logic to embed FC data (battery voltage, flight mode, RSSI) directly into the video stream of digital VTX systems
• Integrate and optimize analog and digital video transmission systems for minimum latency and maximum signal quality

Testing & Debugging

• Build and test prototypes
• Test systems under high vibration and extreme temperature conditions
• Monitor resource consumption and optimize code to prevent overheating or in-flight freezes
• Run simulations to validate new solutions prior to deployment
• Plan and conduct flight tests for data collection, issue identification, and final tuning
• Debug hardware interfaces and perform electrical-level diagnostics

Documentation

• Maintain technical documentation, setup guides, and maintenance instructions for all developed systems

Cyber Harbor is a fast-growing Ukraine-based company founded by engineers and researchers who helped defend critical cyber infrastructure during the war. Our work is shaped by real-world experience, and we build AI-powered systems designed to handle complex, high-stakes environments.

We are looking for a specialist who will help build a strong quality assurance process for our company’s IT products, including solutions in the field of artificial intelligence.

In this role, you will be responsible for full manual testing of our products, evaluating them through the lens of real business and user scenarios. For us, it is important not only to verify that the interface works and that the features match the stated functionality, but also to ensure that the system truly solves user problems, processes data correctly, and generates accurate responses to requests.

We expect the candidate to:

• Demonstrate a high level of responsibility, attention to detail, and an understanding that even minor issues in a MilTech product can be critical.
• Show initiative in their testing approach and not limit themselves to formal feature checks.
• Be committed to continuously developing their QA skills and professional expertise, and communicate effectively with different stakeholders.
• Have 2+ years of commercial experience in Manual QA at the Middle level or above.
• Be able not only to find bugs, but also to identify their causes and sources through log analysis, browser developer tools, debugging, and system behavior analysis.
• Understand how HTTP REST APIs work and be able to use tools such as Postman for testing.
• Be familiar with data formats such as JSON, YAML, and XML.
• Understand the basic principles of working with Git, be familiar with deployments, different environments, and semantic versioning.
• Have a solid understanding of the testing process and hands-on experience with core testing artifacts. 
• Ability to work with requirements, conduct requirements testing and exploratory testing, create checklists, test cases, and bug reports, prepare test run reports, and perform smoke and ad hoc testing. 
• Have experience in requirements analysis, test design, defect tracking, and supporting risk management processes.
• Understand why testing across different environments, operating systems, and browsers is necessary, and how to ensure it is done effectively.
• Be ready to work from the office in Kyiv, at least during the product onboarding stage and team integration.

Not required, but would be a plus if you have:

• Experience working with SaaS products or analytical platforms.
• Any experience in test automation, programming, or writing scripts to speed up tasks.
• Understanding of SQL or Cypher queries.
• Relevant QA certifications.

We offer:

• The opportunity to work on national-scale projects with real practical impact.
• Professional growth in a team of strong specialists. The opportunity to build your own QA team and gradually move into Automation QA, if desired.
• An office in Kyiv with a generator and uninterrupted internet access.
• Military deferment.

About us

Farsight Vision converts flight footage into digital 2D and 3D twins for real-time intelligence in GNSS-denied environment, making analytics and situational awareness convenient and accessible while saving time and effort. We create multi-layered digital twins of terrain with dynamic tracking and object/landscape monitoring and predicting.

We are scaling our cloud infrastructure and looking for a DevOps Engineer who can help us build a stable, automated, and production-ready environment.
 

Responsibilities:

• Design, maintain, and optimize infrastructure in AWS / GCP
• Work with Docker and Kubernetes (EKS / GKS / K3s) in production environments
• Build and maintain CI/CD pipelines (GitHub Actions / ArgoCD)
• Implement monitoring and logging solutions (Prometheus / VictoriaMetrics / Loki / Grafana)
• Support Linux-based production servers and troubleshoot infrastructure issues
• Collaborate with backend and ML engineers on deployments, scaling, and production reliability
• Contribute to Infrastructure as Code (Terraform)
• Advise on cloud security, networking, and high-availability patterns
   

Requirements:

• 5+ years experience in software infrastructure, DevOps, or related role
• Hands-on Docker and Kubernetes experience
• Strong experience with AWS or GCP in production
• Experience building and maintaining CI/CD pipelines
• Experience with monitoring and logging systems (Prometheus / VictoriaMetrics / Loki / Grafana)
• Knowledge of Gazebo and ROS is also an asset
• Experience collaborating closely with development teams on deployment and infrastructure automation
• Understanding of cloud networking and security best practices
   

Why you should join us:

• Join a fast-growing Ukrainian-Estonian defense tech company building AI-powered geospatial intelligence tools used in real defense and security operations.
• Work on technologies that transform drone data into actionable 2D/3D terrain models for situational awareness.
• Collaborate with top engineers and researchers on cutting-edge infrastructure and mission-critical systems.
• Make a real impact on technology used in defense and tactical environments.

We are looking for an Autonomous systems engineer with a background in computer vision, control theory and mathematical modelling. The ideal candidate will have a strong math background, experience with autonomous systems, modelling and control design. 

Required Qualifications: 

• 2 years of hands-on experience with classical computer vision
• Understanding of geometrical computer vision principles 
• System identification and control
• Sensor fusion/signal processing
• Proficiency in C++ and/or experience with Python
• Experience with Linux and single-board computers
• Experience with PID controllers tuning in embedded or autonomous systems
• Ability to quickly navigate through recent research and trends in computer vision and autonomous systems
• Relevant work experience or education in STEM field

Nice to Have:

• Experience with SLAM and/or Visual-Inertial Odometry (VIO)
• Matlab
• Experience with PX4, betaflight, Ardupilot 
• Familiarity with neural networks and common CV frameworks/libraries (OpenCV, NumPy, PyTorch, ONNX, Eigen, etc.)
• Experience with simulation tools (Gazebo, AirSim)
• SITL, HITL testing
• ROS2

We are looking for a Computer Vision Engineer with a solid foundation in classical computer vision and hands-on experience implementing low-level CV algorithms. The ideal candidate will have exposure to SLAM, Visual-Inertial Odometry (VIO), and sensor fusion, with responsibilities adjusted according to experience level.

Responsibilities: 

• Implement and optimize low-level computer vision algorithms under guidance
• Contribute to modules related to feature extraction, tracking, matching, and geometric processing
• Assist in the integration and testing of SLAM/VIO components
• Perform experiments, analyze results, and help prepare reports
• Work closely with senior engineers to explore and apply recent CV research.

Required Qualifications:

• 1+ years of hands-on experience with classical computer vision
• Basic understanding of geometric computer vision principles
• Experience implementing low-level CV algorithms (e.g., filtering, feature detection, camera models)
• Familiarity with SLAM or VIO concepts
• Working knowledge of C++ and Linux
• Ability to learn quickly and navigate recent CV researc
• Degree or ongoing studies in a STEM field.

Nice to Have:

• Experience with Python
• Knowledge of neural networks and CV libraries/frameworks (OpenCV, NumPy, PyTorch, ONNX, Eigen, etc.)
• Experience with sensor fusion techniques
• Familiarity with embedded or real-time systems

We invite you to join Sherlock — a recruitment agency operating within a MilTech company structure. We build teams that develop technological solutions to strengthen the country’s defense capabilities. Our work directly impacts the speed and quality of products designed to protect the sky.

We are looking for someone who wants to build a career in recruitment through deep expertise and understanding of business processes. This role is for those who value structure, quality sourcing, and want to work in a strategically important domain.

Who we are looking for:

• A person who is curious and eager to dive deeply into role specifics and market dynamics
• Someone ready to focus on sourcing and initial screening as a key development area
• A detail-oriented and structured individual who can keep information well-organized
• Someone who sees recruitment as a long-term profession, not a temporary step
• A person driven to find strong candidates and influence hiring quality

We are open to candidates with a background in sales, customer service, coordination, or operations who want to transition into recruitment or already have initial experience.

For us, the key factor is mindset: the ability to work with information, understand process logic, and see how business results are formed.

What you will do:

At the beginning, your focus will be on building a strong foundation and supporting operational processes:

• Source candidates through multiple channels and build a high-quality pipeline for open roles
• Maintain and structure the talent database in PeopleForce
• Support candidate communication and coordinate internal hiring stages
• Manage statuses, analytics, and ensure a smooth recruitment funnel
• Gradually develop expertise in the MilTech market and grow into sourcing complex technical roles

Our expectations:

• 1–2+ years of experience in a commercial, coordination, or operational role
• Strong interest in recruitment and a structured learning approach
• Readiness to handle a high volume of sourcing at the initial stage
• High attention to detail and structured work style
• Strong discipline in meeting deadlines and commitments
• Understanding of the importance of the MilTech domain
• English level: B2

What we offer:

• Compensation: 35,000 – 50,000 UAH (depending on experience and qualifications)
• Format: Fully remote
• Expert growth: Opportunity to master recruitment using our standards and gain unique MilTech expertise
• Learning: Hands-on training, structured onboarding, and continuous feedback
• Team: A mature, professional environment that values common sense and ownership
• Meaningful work: You will help find people for projects that contribute to our victory