Jobs Kyiv

We are looking for a senior backend engineer to build a high-performance service for streaming large datasets.

This is not a conventional CRUD backend role. You will work on persistent HTTP/3 connections, asynchronous I/O, object-storage range reads, binary data transfer, authentication, request scheduling, etc.

What you will do

• Design and build the data-streaming service in Python.
• Implement HTTP/3 and QUIC-based client-server communication.
• Integrate with S3-compatible object storage.
• Build request prioritisation, cancellation, retries, caching, and backpressure.
• Implement token-based authentication and fine-grained access control.
• Integrate Python services with native libraries and binary data formats.
• Add metrics, tracing, load testing, and failure recovery.
• Work closely with desktop visualisation and Python/ML client teams.
• Benchmark streaming performance against download-first workflows.

What we are looking for

• Strong production experience with Python.
• Experience with asynchronous Python, task scheduling, and concurrent I/O.
• Experience building high-throughput or low-latency backend systems.
• Good understanding of networking, HTTP, TLS, and binary protocols.
• Practical knowledge of S3, MinIO, Ceph, or similar object storage.
• Experience with streaming I/O, byte-range reads, caching, and memory management.
• Strong performance-profiling and debugging skills.
• Ability to design stable interfaces between independently developed systems.

Nice to have

• Production experience with C++. 
• Experience with HTTP/3, QUIC, WebTransport, or high-performance RPC.
• Background in distributed storage, CDNs, databases, filesystems, or media streaming.
• Familiarity with scientific visualisation, HPC, simulation, or large multidimensional datasets.
• Experience with CUDA or GPU data pipelines.
• Experience with OAuth, OIDC, JWT, and capability-based access.
• Knowledge of Kubernetes and OpenTelemetry.

We are looking for a senior C++ engineer to build a high-performance service for streaming large scientific and engineering datasets.

This is not a conventional CRUD backend role. You will work on asynchronous networking, HTTP/3 and QUIC, object-storage range reads, binary data transfer, native library integration, request scheduling, and bounded-memory data pipelines.

What you will do

• Design and implement the data-streaming service in modern C++.
• Build persistent HTTP/3 and QUIC-based client-server communication.
• Stream selected regions of large datasets without downloading complete files.
• Integrate with S3-compatible object storage and native data-processing libraries.
• Implement asynchronous request scheduling, prioritisation, cancellation, retries, caching, and backpressure.
• Design stable binary and JSON interfaces between independently developed components.
• Implement token-based authentication and fine-grained access control.
• Optimise memory allocation, copying, concurrency, and end-to-end throughput.
• Add metrics, tracing, load testing, and failure recovery.
• Collaborate with visualisation, machine-learning, backend, and systems engineers.

What we are looking for

• Strong production experience with modern C++17/20.
• Experience building high-throughput, low-latency, or data-intensive systems.
• Strong understanding of asynchronous and concurrent programming.
• Good knowledge of networking, HTTP, TLS, and binary protocols.
• Experience with streaming I/O, byte-range access, buffering, caching, and memory management.
• Practical knowledge of S3, MinIO, Ceph, or similar object-storage systems.
• Strong debugging, profiling, and performance-optimisation skills.
• Experience designing reliable APIs and component boundaries.
• Familiarity with Linux systems programming and production service operation.

Nice to have

• Experience with HTTP/3, QUIC, WebTransport, or high-performance RPC.
• Experience with zero-copy or low-copy data paths.
• Experience integrating C++ libraries with Python
• Familiarity with CUDA or GPU-oriented data pipelines.
• Background in distributed storage, databases, CDNs, filesystems, media streaming, HPC, or scientific visualisation.
• Experience with OAuth, OIDC, JWT, and capability-based access.
• Knowledge of Kubernetes and OpenTelemetry.

We’re a 100+ people product company looking for an experienced HR professional to take ownership of the people function and help us scale thoughtfully.

There’s already a solid foundation: an HR Operations / People Partner Manager and a Recruiter are part of the team, and HR processes are up and running. What we need now is someone to elevate the function - act as a strategic partner to leadership, sharpen our people practices, and bring both big-picture thinking and hands-on execution.

What You’ll Be Doing
▸ Partner with middle and senior managers to translate business goals into HR strategies and concrete actions
▸ Use HR metrics and analytics to support decision-making and drive data-informed conversations at all levels
▸ Support organizational design: structure, role definitions, workforce planning
▸ Contribute to job architecture - leveling, grading, and KPI frameworks
▸ Own the full employee lifecycle: onboarding, performance management, development, internal mobility, and offboarding
▸ Develop and maintain HR policies and processes that work for the business, not just for compliance
▸ Coach and guide managers on people management, employee relations, and HR processes
▸ Identify organizational challenges early, propose practical solutions, and follow through on implementation
▸ Lead and contribute to HR projects end-to-end - from design to delivery
▸ Collaborate closely with the FinOps Manager on payroll, accruals, and compensation-related matters
▸ Work in tight coordination with the HR Operations / People Partner Manager and Recruiter to keep the people function running smoothly and consistently

What We’re Looking For
▸ 5+ years in HR, with 2+ years in an HR Business Partner or HR Lead capacity
▸ Proven experience working directly with middle and senior management
▸ Background in international or multicultural environments
▸ Strong expertise in Performance Management and the full Employee Lifecycle
▸ Experience navigating complex ER situations - conflicts, retention challenges, and offboarding
▸ Confident working with HR data: metrics, reporting, analytics - you bring evidence to the table, not just instinct
▸ English B2+ (used in daily work)
▸ Kyiv-based (preferred)
▸ ✦ PLUS: Familiarity with Ukrainian employment specifics - gig contracts, PE arrangements and military registration

Who Will Thrive in This Role
You enjoy working at the intersection of business, leadership and people. You’re comfortable building and improving processes, can navigate ambiguity, and know how to move between strategic thinking and day-to-day execution without losing momentum.

Cropwise Operations is a global leader in digital agritech solutions, operating in over 50 countries and helping optimize business processes and improve the efficiency of agronomic decision-making.  

We are looking for a skilled Ruby on Rails Developer to join our team.

What we expect from a candidate:

- Preferably 3+ years of Ruby on Rails development experience.

- Strong knowledge of Rails.

- Experience with testing frameworks like RSpec and Capybara.

- Testing with RSpec/Capybara.

- Basic knowledge of ES6 + React.js.

- Experience with JavaScript.

- Standard Rails application deployment stack (Git, CI, Capistrano, *nix).

- Knowledge of HTML/CSS.

What exactly will you need to work with:

- Backend on Ruby on Rails 7.0 (Ruby 3.2).

- PostgreSQL + PostGIS database (handling large geospatial datasets).

- Job processing with Resque + Redis.

- Testing on RSpec + Capybara + CI.

- Partially frontend on React.js (ES6, JSX).

What else can you work with?

- Algorithms for processing large amounts of geodata.

- Reception and processing of binary data (Ruby eventmachine).

- Working with RabbitMQ.

- AWS, Google Cloud, Kubernetes.

- Visualization and work with geodata on the frontend (Mapbox GL JS).

Hiring process:

- Intro call;

- Test Task;

- Final Interview;

- Offer.

The company offers:

- Opportunity to be a part of a best-in-class product that is used by thousands of companies around the world.

- Participation in complex technical tasks and challenges.

- Environment where you need to seek and implement unique engineering and technical solutions.

- Trainings and development programs.

- Flexible work formats: remote, office or hybrid.

- Health and life insurance for employees and your family members.

- 32 working days of paid annual leave and sick leave.

About Cropwise Operations

Cropwise Operations is a SaaS platform for farmers, leveraging cutting-edge technologies such as computer vision, big data, and AI to deliver actionable insights and improve agricultural outcomes.

For seekers, cooperation with Cropwise Operations is an opportunity to be part of a best-in-class product used by hundreds of companies around the world, and to deal with complex technical tasks in the field of neural networks and machine learning with the need to constantly improve their knowledge and skills, to find and implement unique engineering and technical solutions.

Ajax Systems, an international tech company and the largest manufacturer of security systems in Europe.

We are looking for a DevOps Team Lead to join our Platform Team and help us scale, secure, and improve our cloud infrastructure. This role combines hands-on technical ownership with team leadership: you will guide DevOps engineers, define platform priorities, improve reliability, and collaborate closely with product and engineering teams.

The System Division develops the Ajax software ecosystem — including OS Malevich, the Video Management System, cloud infrastructure, and client applications. The team ensures the stable operation of all system components as a unified digital platform.

Requirements:

• 5+ years of experience in DevOps, Platform Engineering, SRE, or Cloud Engineering, including 2+ years in a lead or senior ownership role.
• Strong hands-on experience with Kubernetes, preferably AWS EKS, including cluster operations, networking, autoscaling, workload reliability, and security best practices.
  Solid AWS experience: VPC, IAM, EC2, RDS, ElastiCache, Route 53, Lambda, Load Balancers, CloudFront/S3 etc.
• Experience with Infrastructure as Code and configuration management tools, especially Terraform/Terragrunt.
• Experience with GitOps-based delivery using Argo CD or Flux, and Helm/Kustomize for Kubernetes application management.
• Strong Linux and TCP/IP networking knowledge, including troubleshooting production systems.
• Experience with secrets management, access control, and credential rotation practices.
• Strong observability background: metrics, logs, alerts, SLOs, incident investigation, and tools such as Datadog, Grafana, VictoriaMetrics, ELK, or Opsgenie.
• Ability to lead technical discussions, explain trade-offs, set priorities, and drive decisions across engineering teams.
  Strong communication, ownership, task management, and mentoring skills.
   

Desirable:

• Experience with advanced Kubernetes tooling: Karpenter, KEDA, Envoy, Istio/Linkerd or similar.
• Experience with streaming platforms such as NATS or Kafka.
• Operational experience with databases such as MongoDB, MySQL, PostgreSQL, or managed cloud database services.
• Experience with compliance frameworks such as SOC 2.
  Background in FinOps, cloud cost optimization, and infrastructure efficiency improvements.
• Experience with disaster recovery planning, backup strategies, incident response, or production fire drills.
   

Responsibilities:

• Lead, mentor, and grow the DevOps/Platform team: set technical priorities, support hiring, provide feedback, and foster a culture of ownership and engineering excellence.
• Own and evolve the Kubernetes platform: cluster architecture, deployment standards, autoscaling, reliability, security practices, and developer experience.
• Improve CI/CD and GitOps workflows to make deployments safer, more repeatable, and easier for engineering teams.
• Collaborate with engineering, product, security, and operations teams to align infrastructure improvements with business and product needs.
• Identify and remove bottlenecks in the software delivery lifecycle, platform operations, and production support processes.
• Strengthen platform security: access management, secrets management, network controls, compliance requirements, and secure-by-default practices.
• Build and improve proactive observability: monitoring, alerting, dashboards, incident response processes, and post-incident improvements.
• Drive cloud cost optimization initiatives and provide practical recommendations for more efficient infrastructure usage.
• Participate in production support and on-call processes for critical incidents, while continuously improving reliability and reducing operational toil.
   

We offer:

• The opportunity to suggest and implement your own ideas that directly influence the product and its mass production;
• A place in a fast-growing company with a motivated and professional team;
• Competitive salary;
• Medical insurance;
• Corporate English classes;
• The opportunity to participate in Ajax’s internal beta-testing program for security systems;
• Discounts from partner companies;

• Discounts on Ajax products.

   

Ajax Systems is a Ukrainian success story that has grown into a global product. Ajax devices are trusted by more than 4.5 million end users and 330,000 PRO users in over 180 countries. The company provides comprehensive solutions to protect residential and commercial properties of all sizes. Today, Ajax portfolio includes 280 devices for intrusion protection, video surveillance, fire safety, and comfort and automation.