Jobs at Djinni

Description

The project team is part of a commercial software delivery organization focused on building and maintaining customer-facing applications. The department works in an agile environment, collaborating closely with developers, product owners, and stakeholders to deliver high-quality, reliable solutions. The team is expanding and is looking for an expirience Senior QA Automation Test Engineer to join the project.

#LI-MP2
#LI-Remote

Requirements

• 5+ years of hands-on experience in test automation using Java.
• Strong experience with Playwright(Selenium, Java binding) for UI test automation.
• Solid knowledge of JUnit 5, test design principles, and the test lifecycle.
• Proficient in testing REST APIs using tools like Retrofit, Postman, or similar.
• Experience validating data at the database level using SQL or frameworks like MyBatis.
• Comfortable working in Agile/Scrum environments, participating in daily standups, reviews, and retrospectives.
• Hands-on experience with CI/CD tools (e.g., Jenkins, GitLab CI).
• Knowledge of test reporting tools (e.g., Allure).
• Ability to troubleshoot and debug automation failures across multiple layers (UI, API, DB).
• Ability to create a functional test plan and test cases.
• Strong communication skills and a proactive attitude.
• Strong understanding of AI and Generative AI technologies, including LLM-based applications.

Nice to Have:

• Experience with Manifold for Java (plugin and usage).
• Exposure to test planning and requirement traceability.

Job responsibilities

• Collaborate closely with developers and other QA engineers during sprint planning and refinement.
• Design, implement, and maintain E2E and integration tests for web applications and RESTful APIs.
• Build and enhance automated test suites using Java 11, Playwright, and JUnit 5.
• Perform API-level testing using Retrofit, and validate business logic and database operations with MyBatis.
• Configure and manage test environments and property files using the owner library.
• Participate in code reviews and contribute to test framework improvements and standards.
• Analyze test results, investigate issues, and log defects with clear documentation.
• Work with Jenkins or similar CI/CD tools to monitor and troubleshoot test pipeline runs.
• Leveraging AI tools to accelerate test automation, optimize QA workflows, and validate AI-enabled products and features.

Description

We are looking for a hands-on Senior Python Engineer who can take an AI use case from technical design through implementation and integration into a production environment.

The ideal candidate combines strong Python/software engineering skills with practical experience building LLM and GenAI solutions, and is comfortable working in an enterprise environment with complex business and technical requirements.

Requirements

• 5+ years of software engineering experience (including backend/distributed systems), with 2+ years designing and running LLM/agentic systems in production.
• Expert Python engineering for long-running services: concurrency, resource management, performance profiling, API client resilience (retries, timeouts, backoff).
• Deep working knowledge of model capabilities/limits across tiers, model selection and pinning strategy, cross-region inference profiles, quota and throughput planning.
• Expert-level use of Strands Agents/LangGraph in production, including custom tool adapters, memory/session management, and framework-internals debugging.
• Proven ability to select and implement the right pattern per problem, decompose oversized tasks (map-reduce with checkpointing), and escalate autonomy only on eval evidence.
• Experience owning tool contracts as versioned integration surfaces: schema design, least-privilege scoping, read/write separation, contract testing with API-owning teams.
• Advanced context engineering: prompt layout for cache hit rate, stable-prefix design, per-step context allocation, measured (not guessed) representation choices.
• Experience designing versioned output contracts consumed by downstream systems, including evidence/citation fields and compatibility management.
• Experience designing evaluation methodology end-to-end: statistical treatment of nondeterminism, grader mix and judge calibration, eval-gated CI for prompt/model/config changes, growing eval sets from production failures.
• Experience designing defense-in-depth for production agents: prompt-injection resistance, tenant isolation, PII redaction handling, least-privilege tool access, degradation ladders and failure policies.
• Experience operating agents in production: end-to-end run reconstruction, per-tenant cost attribution, drift monitoring, incident response for AI-specific failures, capacity and quota management.
• Strong AWS experience including Amazon Bedrock (and ideally Bedrock AgentCore: Runtime, Gateway, Memory, Identity), infrastructure as code (CloudFormation/Terraform), and event-driven pipeline design (queues, DLQs, idempotency, checkpointing).
• Experience designing derived-data stores for agent pipelines (run state, checkpoints, memoized intermediate results) with clear source-of-truth boundaries.
• Ability to lead technical discussions, mentor engineers, and align integration contracts with application teams and architects.

Job responsibilities

• Own the design and delivery of production agent pipelines end-to-end, from trigger to published output, including decomposition for oversized inputs.
• Own tool contracts as versioned integration surfaces jointly with API-owning teams; drive contract-first development and contract testing.
• Design the release-bundle process (prompt + model + tools + config versioned and deployed as one unit, stamped on every output).
• Define the evaluation methodology and quality gates; calibrate judges against human experts; grow eval sets from production failures.
• Design the failure and degradation policy (retry, resume, degrade, honest absence), pathological-input handling, and prompt-injection defense-in-depth.
• Own production operations: dashboards, alerts, drift monitoring, incident response, quota/capacity planning, cost optimization.
• Lead code and design reviews; enforce testing standards across agent, tools, and infrastructure code.
• Design and operate shadow/champion-challenger rollout mechanisms; manage pinned-model upgrades with mandatory eval reruns.
• Partner with product and domain experts to define output contracts, quality rubrics, and feedback loops; challenge requirements that harm quality or cost.
• Mentor junior and middle engineers; develop the team’s agent-engineering playbook.

TenThousand is a Ukrainian engineering company that has been developing solutions for Fintech and Retail clients in the US, Israel, and Europe since 2021. Our client base includes banks, fintech companies, and logistics services. We tackle complex technical challenges—such as high-risk projects or those involving legacy architecture—and transform them into reliable, scalable, and stable systems. We work on real commercial projects, applying a product-oriented approach and adhering to high standards of quality and security.

We run our own free 3-month academy and are currently looking to add 5 developers to our team for a remote role.

What you’ll be doing:
• Developing features for real commercial projects for clients in the US, Israel, and Europe
• Working in a team under the guidance of a lead from day one
• Developing your technical skills in an environment that upholds real product standards

Requirements:
• Solid knowledge of React, JavaScript, and TypeScript
• Willingness to learn quickly and adopt new approaches
• Responsibility, initiative, and self-organization
• English proficiency at B1+ level (for working with documentation and basic communication)

What we offer:
• Involvement in real projects from the very first weeks
• Free 3-month internal academy and mentorship
• Systematic professional development and career growth within the company
• Remote work format | Office-based work

Selection stages:
1 HR interview — introduction, motivation, soft skills (20–30 min)
2 Technical assignment or interview with the lead
3 Discussion with the project lead → job offer

About the Role

We are building next-generation Generative AI technology for the gaming industry, changing the way video advertising content is produced and scaled. Our technology can recreate and emulate game development environments, helping gaming companies generate video ads, new game levels, and game mechanics significantly faster and more efficiently.

By combining Generative AI with genetic machine learning models, the technology has already demonstrated strong results in collaboration with major gaming companies, including improvements of up to 10x in key performance metrics.

We are now looking for a Motion Designer to join the team and contribute to creating high-quality, engaging advertising content for mobile games.

Your Responsibilities

As a Motion Designer, you will:

• Work within Unity to create and optimize dynamic, engaging ads for mobile games.
• Utilize After Effects to enhance video ads, ensuring they are visually compelling and aligned with the marketing strategy.
• Collaborate closely with game developers and marketing teams to design high-quality assets for ad campaigns.
• Apply your artistic skills to elevate the aesthetic quality of the ads, balancing creativity with performance optimization.

Key Requirements

We are seeking candidates with the following qualifications:

• Proficiency in Unity: You should feel confident working within the Unity environment to create and modify assets for video ads.
• Experience with After Effects: Strong knowledge and usage of After Effects to create polished video content.
• Background in mobile game ads: At least 1 year of professional experience in producing ads for games, ideally mobile games.
• A creative mindset with artistic inclinations, bringing unique visual perspectives to the table.
• Bonus: You are an avid mobile gamer yourself, with a deep understanding of game mechanics and audiences.

Hiring Process

We value a streamlined and transparent hiring process:

1. Home Task (Optional): You may be asked to complete a task to demonstrate your skills. This will be discussed during the technical interview.
2. Technical Interview: A comprehensive discussion with the Hiring Manager, including a review of your portfolio and the optional test task.

3. HR Interview: A final conversation with the HR team to align expectations, culture, and values.

    

Benefits

We offer:

• 20 days of vacation annually, plus all national holidays.
• 10 days of sick leave per calendar year.
• Paid software licenses and tools necessary for your work.
• A dynamic, remote-friendly work environment with the flexibility to work from anywhere.

We are seeking a highly skilled and experienced Senior DevOps Engineer to join our dynamic team. The ideal candidate will have a strong background in Kubernetes, Terraform, ArgoCD, Continuous Integration (CI), Continuous Deployment (CD), developer toolsets, and Software Development Life Cycle (SDLC) best practices. This role requires a deep understanding of modern DevOps tools and practices, as well as a commitment to fostering a responsive, communicative, and collaborative environment. This role requires on-call duties.

Key Responsibilities:

• Develop and manage large scale production Kubernetes clusters in a cloud environment (AWS preferred).
• Deploy, manage, and monitor containerized applications using Kubernetes.
• Develop and manage infrastructure as code using Terraform.
• Design, implement, and maintain CI/CD pipelines to ensure efficient and reliable software delivery.
• Manage and optimize cloud infrastructure in AWS to support scalable and secure applications.
• Administer and optimize source code repositories and workflows in GitHub.
• Collaborate with development teams to enhance developer toolsets and streamline SDLC processes.
• Troubleshoot and resolve infrastructure and application issues.
• Implement best practices for security, reliability, and performance.
• Provide mentorship and technical guidance to junior engineers.
• Communicate effectively with cross-functional teams to understand requirements and deliver solutions.

Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent experience.
• 5+ years of experience in a platform engineering, DevOps or similar role.
• Extensive experience with Terraform for infrastructure as code.
• Experience with self-hosted Kubernetes clusters for container orchestration and ArgoCD.
• Proficiency in Golang or Python(or any other languages) for scripting and automation.
• Hands-on experience with GitHub for version control and collaboration. 
• In-depth experience with AWS cloud services.
• Excellent problem-solving skills and the ability to work under pressure.
• Exceptional communication skills, both verbal and written.
• Proven ability to work collaboratively in a team environment.
• Strong organizational skills and attention to detail.
• In depth networking knowledge.
• Hands-on experience with AI-assisted development tools, such as GitHub Copilot and Claude Code.

Preferred Qualifications:

• Experience with Github runners and other CI/CD tools and platforms.
• Knowledge of security best practices in cloud environments.
• Experience with observability tools such as Prometheus, and ELK and Grafana stacks- nice to have .
• Certification in AWS or Kubernetes and experience with Backstage is a plus.
• Experience with kOps is a plus.
• Knowledge of Cilium CNI is a plus.
• Experience with Jenkins is a plus.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Join our Revenue Management engineering team and take ownership of the software that powers pricing decisions for every SIXT vehicle, worldwide. Our back office platform enables Pricing Managers to configure rates for both B2C and B2B customers and serves as a critical backbone for a range of internal business operations. The current system is built on a legacy codebase and your primary mission will be to reimagine and rebuild it from the ground up. This is a rare greenfield opportunity to architect a replacement for a core, mission-critical platform that directly shapes the prices millions of customers see across the globe.

What You’ll Do:

• Build and maintain scalable services and integrations
• Design solutions to solve complex problems in legacy and data-intensive systems
• Write clean, tested code and perform code reviews
• Own your services: “You build it, you run it.”
• Collaborate with Product Owners and stakeholders

Must-Have Skills:

• 4-5 years experience with Go, PHP.
• Strong OOP, design patterns, and experience with working with legacy code
• Strong SQL skills (with PostgreSQL, Oracle)
• Unit & integration testing, familiarity with XML, JSON, YAML
• Version control: Git.
• Agentic coding experience
• Upper-Intermediate English.
 

Nice-to-Have:

• Symfony, frontend frameworks (React, ExtJS, jQuery)
• Microservices, goMicro, REST/gRPC APIs, message brokers (Kafka, RabbitMQ)
• Cloud Experience, Docker, Kubernetes, observability tools (Prometheus, Grafana, Instana)
• Exposure to AI/ML tools and frameworks for data-intensive applications.
• Performance optimization and load testing.
• Security/authentication: OAuth2, JWT, Keycloak
 

What we offer:

• Competitive high salary (pegged to EUR)
• Full-time employment as an internal employee of SIXT TECH Ukraine
• Relocation compensation
• People-oriented management with minimal bureaucracy
• A challenging role where you can learn, grow, and influence architecture and processes
• 25 calendar days of paid vacation
• Educational budget for courses, conferences, and certifications
Medical insurance
• Co-funding (50%) for gym and foreign language classes

If you want to work with modern data tech, real business impact, and a global product at scale — we’d love to hear from you.

Affiliate Manager (Crypto Casino)

We are looking for an experienced Affiliate Manager to join our growing iGaming team and help scale our affiliate program for a new Crypto Casino project.

Responsibilities

• Search for and onboard new SEO affiliate partners.
• Build and maintain long-term relationships with SEO webmasters and affiliate teams.
• Negotiate and manage RevShare (RS) partnership agreements.
• Monitor traffic quality, player value, and long-term partner performance.
• Analyze FTDs, NGR, LTV, retention, and overall affiliate profitability.
• Scale existing SEO partnerships and identify new growth opportunities.
• Work closely with CRM, Product, and BI teams to maximize affiliate performance.

• Monitor the competitive landscape and identify high-potential SEO partners.

   

Requirements

• Experience as an Affiliate Manager in Crypto Casino.
• Mandatory experience working specifically with SEO traffic.
• Strong understanding of RevShare (RS) business model.
• Existing network of SEO affiliates and webmasters.
• Experience negotiating and managing long-term RS partnerships.
• Understanding of SEO affiliate economics, player quality, and lifetime value.
• Strong analytical and communication skills.

• English — Upper-Intermediate or higher.

   

We Offer

• Fully remote work.
• Competitive fixed salary.
• Attractive performance-based bonus system.
• Long-term cooperation.
• Opportunity to grow with a new international product.
• Fast decision-making and minimal bureaucracy.
• Supportive team and transparent processes.

If you're passionate about affiliate marketing and have experience in the iGaming industry, we'd love to hear from you.

Description

We are looking for a mature and proactive Scrum Master who can operate independently, rather than someone focused only on facilitating Scrum ceremonies.

The person should be comfortable taking ownership of delivery-related topics, proactively addressing blockers and dependencies, challenging inefficient processes, and helping the team improve its delivery predictability.

Requirements

• 3+ years of experience as a Scrum Master in software development.
• Strong practical knowledge of Scrum and Agile methodologies.
• Proven experience working with software engineering teams.
• Strong experience with Jira and Confluence or similar tools.
• Hands-on experience with delivery planning, tracking, and reporting.
• Experience managing impediments, risks, and dependencies.
• Experience working closely with Product Owners and technical teams.
• Strong facilitation and stakeholder management skills.
• Ability to work proactively and independently.
• Strong communication and conflict-resolution skills.
• Upper-Intermediate or higher English.
• Experience working with distributed international teams.
• Experience coordinating dependencies across multiple teams.

• Experience in scaled Agile environments.

   

Job responsibilities

• Facilitate Scrum ceremonies, including Sprint Planning, Daily Scrum, Sprint Review, Retrospectives, and Backlog Refinement.
• Support the team in planning and delivering Sprint and release commitments.
• Track delivery progress, risks, blockers, and dependencies.
• Proactively identify and remove or escalate impediments.
• Work closely with the Product Owner to maintain a healthy and well-refined backlog.
• Ensure effective communication and collaboration between Product, Engineering, QA, and other stakeholders.
• Support estimation, planning, and delivery tracking.
• Monitor Agile metrics and use them to improve team transparency and delivery predictability.
• Facilitate continuous improvement and help the team identify and implement practical process improvements.
• Support effective management of cross-team dependencies.
• Facilitate resolution of team conflicts and help maintain a collaborative team environment.
• Provide clear and timely updates on delivery status, risks, and dependencies.

We are looking for a hands-on QA Automation & AI Lead to build the next generation of AI-driven quality engineering for our web applications.

This is not a traditional QA Lead role. We are looking for an engineer who deeply understands QA, is strong in automation, and has practical experience building and testing LLM-powered products.

What You’ll Do

• Build AI-driven frontend test automation, primarily using Playwright + LLMs, to test real user journeys.
• Design frameworks where AI can help generate test cases, execute tests, validate outcomes, and analyze failures.
• Build evaluation frameworks for LLM products, including prompt evaluation, hallucination testing, regression testing, and output quality.
• Make intelligent decisions about which model to use where, balancing accuracy, latency, context size, and cost.
• Optimize token consumption for frontend automation instead of sending entire pages/context to expensive models unnecessarily.
• Identify where to use deterministic automation vs. LLM-based automation.
• Explore AI-assisted approaches to make manual and exploratory testing faster and more effective.
• Remain highly hands-on while providing technical direction and guiding engineers implementing the automation platform.

What We’re Looking For

• Strong software engineering and test automation experience.
• Hands-on experience with LLMs and AI-powered applications.
• Strong experience with Playwright or similar browser automation frameworks.
• Experience with prompt/LLM evaluation, hallucination testing, and non-deterministic systems.
• Good understanding of token optimization, context management, model selection, latency, and LLM costs.
• Strong understanding of QA principles, test strategy, regression testing, and edge cases.
• Ability to prototype quickly and turn experiments into scalable automation frameworks.
• Strong technical leadership skills while remaining an individual contributor.

What Success Looks Like

You will help us move from traditional QA toward AI-native quality engineering—where AI assists in creating and validating test scenarios, frontend journeys are intelligently automated, LLM products are continuously evaluated, and model/token usage is optimized for both quality and cost.

We’re looking for someone who thinks beyond “How do I automate this test?” and asks “What is the smartest combination of deterministic automation and AI to test this product?”

Gross salary 14,000 - 21,000 PLN 

We are looking for a highly skilled Senior Data Scientist to join our team.  As a Senior Data Scientist, you will be responsible for designing and implementing advanced data models, analyzing complex business problems, and developing solutions that help optimize sales, marketing, pricing, and overall commercial performance in a leading American publishing house.

The role will contribute to the transition from primarily descriptive analytics toward more advanced, data-driven decision making.

Skills & Experience

• Bachelor’s or Master’s degree in Data Science, Computer Science, Engineering, Statistics, Mathematics, or a related field;
• 5+ years of experience in data science roles;
• Strong experience applying data science and machine learning to business problems, ideally in areas such as sales, marketing, customer behavior, demand forecasting, or pricing optimization;
• Proficient in Python and SQL for data analysis, scripting, and machine learning;
• Proficient in using agentic coding tools like Claude Code, Codex, Cursor
• Experience with SciKit-learn, Pytorch, and similar machine learning frameworks for building and deploying machine learning models;
• Experience working with modern data warehouses/lakehouses like Snowflake, Databricks, BigQuery, Redshift
• Strong analytical and problem-solving skills, with the ability to translate ambiguous business problems into data-driven solutions;
• Ability to work independently and collaborate with business and technical stakeholders;
• Fluent in English and excellent communication skills.

Nice to have: 

• Strong background in data science, with extensive experience in leveraging advanced analytics and machine learning to drive data-driven business decisions.

Responsibilities

• Design, develop, and implement advanced data models and machine learning algorithms to solve complex problems in the publishing domain, like author discovery;
• Analyze sales, marketing, customer, product, and pricing data to identify opportunities and support business decisions;
• Develop data-driven approaches to areas such as demand forecasting, customer behavior, sales optimization, marketing effectiveness, and pricing;
• Work with business stakeholders to understand broad or ambiguous business challenges and translate them into analytical and machine learning solutions;
• Collaborate with cross-functional teams to understand data requirements and deliver actionable insights and recommendations;
• Build and maintain scalable data pipelines using technologies such as Snowflake, and DBT;
• Leverage Python and SQL for data analysis, model development, experimentation, and automation;
• Utilize SciKit-learn, Pytorch and similar frameworks for developing and deploying machine learning models;
• Help evolve the organization from descriptive analytics toward predictive and prescriptive analytics and data-driven decision making;
• Stay current with emerging trends and technologies in data science and machine learning.

CodeGeeks Solutions is a software company led by top-notch experts with over 10 years of experience in product design & software development. We are able to comprehensively cover the needs of our clients and focus on the full cycle of development.

Now we are looking for an ambitious Junior Strong Full Stack JS Developer in Lviv to join our team!
 

Why us?

• We trust our team and care deeply that everyone feels comfortable and supported in their work and our positive atmosphere
• This work will be fulfilling! You’ll develop and acquire new skills, and we’ll support you every step of the way
• Here you will find like-minded people and true friends
• Here, you’ll even look forward to Mondays!
• We’re a young and successful team! :)

We Offer

• 15 days of annual time off paid + company-wide New Year holiday in the last week of the year (5 days);
• 20 days of sick leave paid (5 — 100%, 15 — 50%);
• Legal support;
• IT Cluster membership;
• Flexible work schedule and remote work options;
• Chance to make a real impact and shape the future of our company;
• Education compensation;
• Clear career map, continued professional development and growth opportunities;
• Opportunity to work with a talented and dynamic team of experts;
• Internal training and meetups;
• Access to corporate learning materials;
• High-level compensation and regular performance-based salary and career development reviews;
• PE accounting and support;
• Work in a comfortable, modern and cozy office in Lviv;
• Team buildings & corporate events;
• Referral program.
   

Requirements

• At least 2 years of commercial experience.
• English: Upper-Intermediate.
• Technical Education.
• Located in Lviv with the opportunity to visit the office.
• Strong frontend experience with React, NextJS, or similar modern frameworks.
• Backend development experience with NodeJS/NestJS, or other modern backend technologies.
• Good knowledge of relational and NoSQL databases.
• Proficient with AI and agentic coding tools such as Cursor, Claude Code, or similar.
• Strong programming fundamentals and ability to quickly work with new languages, frameworks, and existing codebases.
• Experience with TypeScript or other strongly typed languages and GIT.
• Good understanding of REST principles and how to design and develop RESTful APIs.
• Basic knowledge of Cloud technologies, such as AWS or Azure, is preferred.
• Ability to write high-quality, maintainable, and well-documented code.
• Good problem-solving skills and ability to work independently and in a team.
• Experience with agile methodologies and software development lifecycle.
   

Responsibilities

• Design, develop, and maintain modern web applications using appropriate frontend and backend technologies.
• Design and develop RESTful APIs and backend services.
• Design and maintain relational and NoSQL databases.
• Use AI coding agents as part of the development workflow for implementation, debugging, refactoring, and testing.
• Review and validate AI-generated code, maintaining responsibility for architecture, quality, security, and performance.
• Write high-quality, maintainable, and well-documented code.
• Troubleshoot and debug issues as they arise.
• Continuously improve the performance, scalability, and reliability of applications.
   

At CodeGeeks, we’re dedicated to fostering a culture of collaboration, innovation, and excellence. If you’re passionate about driving business growth and creating value for our clients, we are waiting for your resume!

Responsibilities

• Handle technical requests from clients, operators, and internal teams.
• Investigate, reproduce, and troubleshoot slot game issues.
• Analyze logs, game sessions, and technical identifiers.
• Verify game functionality on desktop and mobile.
• Create bug reports and verify fixes.
• Perform smoke/sanity testing after fixes and releases.
• Support production incident investigations and escalate critical issues.
• Track client-facing issues through resolution.
• Collaborate with QA, Development, DevOps, Account Managers, and other teams.

• Maintain troubleshooting documentation and identify recurring issues.

   

Requirements

• 2+ years of experience in QA, Technical Support, Application Support, or similar.
• Understanding of software testing and client-server architecture.
• Experience with defect investigation and bug reporting.
• Basic knowledge of HTTP/HTTPS and SQL.
• Experience with REST APIs and Postman.
• Experience with ClickUp or similar tools.
• Strong analytical and troubleshooting skills.
• Good technical communication skills.
• English sufficient for written communication.

Nice to Have

• Experience in iGaming, online casino, or slot provider products.
• Knowledge of casino/game provider or aggregator integrations.
• Experience with Kibana, Grafana, Sentry, Datadog, or similar tools.
• Understanding of microservices and production incident investigation.
  
   

Benefits:

• 21 vacation days + 2 extra day-offs annually;
• 12 paid sick days;
• Fully remote format — work from anywhere you feel productive;
• Flexible schedule: start your day anytime between 08:00–11:00 CET;
• Fixed budget for health insurance and gym/fitness;
• Provided all required work equipment;
• Zero bureaucracy and direct communication with founders and C-level;
• Minimal meetings, async-friendly workflow;
• Startup energy: fast motion, creativity, and tight-knit communication;
• Business trips and team meetups several times per year;
• Multiple salary payout options (flexible formats);
• …And many more perks unlocked after we hit break-even.

We are looking for a Head of Product with hands-on experience in blockchain, digital asset, and/or fintech products to lead product strategy, roadmap development, and delivery.

Key Responsibilities:

• Define and maintain the product vision, strategy, and roadmap.
• Research market trends, competitors, and user needs.
• Translate business goals into clear product requirements.
• Prioritize features and manage the product backlog.
• Coordinate product, design, engineering, and business teams.
• Define product metrics and evaluate feature performance.
• Manage product delivery, timelines, risks, and dependencies.
• Work with external technology and service providers.

• Improve internal product development processes.

   

Requirements:

• Experience as a Head of Product, Product Lead, or Senior Product Manager.
• Hands-on experience with blockchain, digital asset, and/or fintech products is required.
• Strong understanding of product discovery, development, and delivery.
• Experience creating product roadmaps and writing clear requirements.
• Understanding of wallets, payments, trading systems, liquidity, custody, and KYC/AML solutions.
• Strong analytical, communication, and leadership skills.
• Experience working with technical teams and external providers.

• English proficiency sufficient for working with international teams and documentation.

   

What We Offer:

• Full-time employment.
• Remote work.
• Flexible working hours.
• Competitive compensation based on interview results.
• Paid vacation and sick leave.
• Direct influence on the product strategy and development.
• Long-term cooperation.

We are looking for a CTO / Solution Architect with hands-on experience in blockchain, digital asset, and/or fintech products to define the technical strategy, design the system architecture, and manage the development team.

Key Responsibilities:

• Design the product architecture and select the technology stack.
• Develop the technical roadmap and plan resources.
• Manage the development team and participate in hiring.
• Evaluate third-party solutions, services, and technology providers.
• Oversee development quality, security, and technical documentation.
• Establish CI/CD, testing, monitoring, and incident response processes.

• Ensure system stability, scalability, and fault tolerance.

   

Requirements:

• Experience as a CTO, Tech Lead, or Solution Architect.
• Hands-on experience with blockchain, digital asset, and/or fintech products is required.
• Understanding of blockchain infrastructure, wallets, custody solutions, liquidity providers, and trading systems.
• Experience designing secure, high-load systems.
• Understanding of microservices and event-driven architecture.
• Experience with cloud infrastructure, Docker, Kubernetes, PostgreSQL, Redis, and message brokers.
• Experience managing technical teams and external contractors.

• English proficiency sufficient for working with documentation and international providers.

   

What We Offer:

• Full-time employment.
• Remote work.
• Flexible working hours.
• Competitive compensation based on interview results.
• Paid vacation and sick leave.
• Direct influence on the architecture, technologies, and team structure.
• Long-term cooperation.

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 for complex, high-stakes environments.

We are currently looking for a Cybersecurity Engineer who will help us design, implement, and maintain the security foundations of our data processing platforms and the infrastructure around them. This role combines practical security engineering with hands-on research and testing. You will help define internal security standards, protect critical infrastructure, and proactively identify weaknesses in our systems before they can be exploited.

We build complex AI systems that operate on large datasets in sensitive environments. Because of that, security is not just a compliance requirement for us - it is a core engineering discipline.

What You Will Do

• Design and implement cybersecurity policies and internal security standards.
• Help maintain visibility and control over company devices, servers, and infrastructure assets.
• Build and improve systems that help prevent data leaks and unauthorized access.
• Perform internal security assessments of our products, infrastructure, and services.
• Conduct regular internal penetration testing and security audits.
• Use tools such as Nmap, Nuclei, Metasploit, and other scanning frameworks to identify vulnerabilities.
• Investigate potential attack surfaces across APIs, web applications, internal services, and infrastructure.
• Work closely with engineering teams to identify and address security issues early in the development process.
• Help implement monitoring, logging, and detection mechanisms for suspicious activity.
• Document findings, propose mitigation strategies, and support teams in implementing fixes.

What You Need to Join Us

• Strong practical understanding of cybersecurity principles and modern attack vectors.
• Hands-on experience with security testing tools such as Nmap, Nuclei, Metasploit, or similar frameworks.
• Strong understanding of network security, web application security, and infrastructure security.
• Experience conducting penetration tests or security research.
• Familiarity with Linux systems and common server environments.
• Ability to analyze systems and identify weaknesses in architecture or implementation.
• Curiosity, persistence, and a strong desire to understand how systems fail.
• Ability to configure and maintain system-level firewalls (for example, iptables, nftables, or ufw) and enforce network-level access policies.
• Experience configuring and operating Web Application Firewalls (WAFs) such as Cloudflare WAF, ModSecurity, or similar solutions to protect APIs and web services.
• Strong practical understanding of how the Internet works, including DNS, TLS, HTTP, and common attack vectors affecting networked systems.
• Solid knowledge of networking fundamentals, including TCP/IP, routing, NAT, VLANs, and the OSI model.
• Ability to analyze traffic flows, understand how packets move through networks, and diagnose connectivity or security issues across different layers of the network stack.

Relevant certifications such as OSCP, CEH, Security+, or similar are welcome, but real-world experience and demonstrated skills matter more.

Who We Are Looking For

Not looking for someone whose experience is centered primarily on managing large security teams or producing compliance documentation.

Instead, we are looking for highly motivated engineers and curious security-minded builders who enjoy exploring systems, testing assumptions, finding weaknesses in creative ways, and building stronger defenses as a result. Unusual backgrounds, unconventional experience, and self-driven experimentation can be a better fit for this role than a traditional career path.

Why Join Us

• Work on real-world systems operating in high-stakes environments.
• Help secure AI platforms and data infrastructure used in complex operational scenarios.
• Military deferment is available for full-time employees.
• Flexible work format in a results-driven environment.

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Cyber Harbor - українська компанія, заснована інженерами та дослідниками, які брали участь у захисті критичної кіберінфраструктури під час війни. Ми спираємося на реальний практичний досвід і створюємо AI-powered системи для складних середовищ, де помилка може мати високу ціну.

Зараз ми шукаємо Cybersecurity Engineer, який допоможе нам будувати, впроваджувати та підтримувати базові елементи безпеки наших платформ для обробки даних і пов’язаної з ними інфраструктури. Ця роль поєднує практичну security engineering роботу з hands-on дослідженням і тестуванням. Ви допомагатимете формувати внутрішні стандарти безпеки, захищати критичну інфраструктуру та проактивно виявляти слабкі місця в наших системах до того, як ними зможуть скористатися.

Ми створюємо складні AI systems, що працюють із великими обсягами даних у чутливих середовищах. Саме тому для нас безпека - це не просто вимога комплаєнсу, а повноцінна інженерна дисципліна.

Що ви будете робити

• Проєктувати та впроваджувати політики кібербезпеки й внутрішні стандарти безпеки.
• Допомагати підтримувати контроль і прозорість щодо корпоративних пристроїв, серверів та інфраструктурних активів.
• Будувати та вдосконалювати рішення, що знижують ризик витоку даних і несанкціонованого доступу.
• Проводити внутрішні security assessments наших продуктів, інфраструктури та сервісів.
• Регулярно проводити внутрішні penetration tests і security audits.
• Використовувати такі інструменти, як Nmap, Nuclei, Metasploit та інші scanning frameworks, для виявлення вразливостей.
• Аналізувати потенційні attack surfaces на рівні APIs, web applications, внутрішніх сервісів та інфраструктури.
• Тісно взаємодіяти з engineering teams, щоб виявляти й закривати security issues ще на ранніх етапах розробки.
• Допомагати впроваджувати механізми моніторингу, логування та виявлення підозрілої активності.
• Документувати результати, пропонувати mitigation strategies і допомагати командам впроваджувати необхідні виправлення.

Що нам важливо

• Сильне практичне розуміння принципів кібербезпеки та сучасних attack vectors.
• Hands-on досвід роботи з інструментами security testing, такими як Nmap, Nuclei, Metasploit або подібними frameworks.
• Сильне розуміння network security, web application security та infrastructure security.
• Досвід проведення penetration tests або security research.
• Знайомство з Linux-системами та типовими серверними середовищами.
• Вміння аналізувати системи та виявляти слабкі місця в архітектурі або реалізації.
• Допитливість, наполегливість і сильна внутрішня мотивація розуміти, як саме системи дають збій.
• Вміння налаштовувати та підтримувати system-level firewalls (наприклад, iptables, nftables або ufw) і забезпечувати мережеві політики доступу.
• Досвід налаштування та експлуатації Web Application Firewalls (WAFs), таких як Cloudflare WAF, ModSecurity або подібних рішень, для захисту APIs і web services.
• Сильне практичне розуміння того, як у реальності працює Інтернет, зокрема DNS, TLS, HTTP та типові attack vectors, що впливають на мережеві системи.
• Ґрунтовні знання мережевих основ, зокрема TCP/IP, routing, NAT, VLANs і моделі OSI.
• Вміння аналізувати traffic flows, розуміти, як пакети проходять через мережу, та діагностувати проблеми зі з’єднанням або безпекою на різних рівнях network stack.

Профільні сертифікації, такі як OSCP, CEH, Security+ або подібні, будуть плюсом, але для нас важливішими є реальний практичний досвід і підтверджені навички.

Кого ми шукаємо

Не шукаємо людину, чий досвід зосереджений переважно на управлінні великими security teams або підготовці compliance documentation.

Натомість ми шукаємо сильних, мотивованих інженерів і допитливих security-minded фахівців, яким цікаво досліджувати системи, перевіряти припущення, нестандартно шукати слабкі місця й на цій основі будувати сильніший захист. Незвичний бекграунд, нетиповий досвід і self-driven експерименти можуть підійти для цієї ролі краще, ніж класичний кар’єрний шлях.

Чому варто приєднатися

• Працювати з реальними системами, що функціонують у середовищах із високою ціною помилки.
• Допомагати захищати AI platforms та data infrastructure, які використовуються в складних операційних сценаріях.
• Бронювання доступне для full-time працівників.
• Гнучкий формат роботи в середовищі з фокусом на результат.