Jobs at Djinni

Overview

We are looking for a detail-oriented and motivated  Quality Assurance Specialist to join our team. This is a great opportunity for someone who has completed a QA Academy, QA training program, or similar practical course and is ready to start their professional career.

No prior commercial experience is required, but candidates should have a basic understanding of QA processes, testing web applications, writing test cases, and documenting requirements.

This role is ideal for someone who can learn quickly, communicate clearly, organize information, and help ensure high-quality delivery of web applications.

Key Responsibilities

• Gather, analyze, and document business and functional requirements
• Collaborate with stakeholders, developers, and team members 
• Create and maintain test cases and test scenarios based on requirements
• Perform functional, regression, and exploratory testing of web applications
• Identify, document, and track defects through resolution
• Maintain clear and consistent documentation across all deliverables
• Learn and follow team processes, tools, and quality standards

Requirements

• Completed QA Academy, QA bootcamp, QA training program, or equivalent hands-on QA course
• Basic understanding of software testing concepts and QA processes
• Ability to write test cases, test scenarios, and bug reports
• Basic understanding of web applications and how users interact with them
• Strong attention to detail and ability to organize information clearly
• Analytical thinking and problem-solving mindset
• Good written and verbal communication skills
• Willingness to learn, ask questions, and improve through feedback
• Familiarity with tools such as Jira, Trello, Excel, Google Sheets, or similar tools

Nice to Have

• Practice testing web applications during QA Academy or training projects
• Experience creating documentation, user stories, or acceptance criteria
• Basic understanding of Agile/Scrum processes
• Exposure to HR, recruiting, or business operations systems
• Basic understanding of APIs, databases, or backend systems
• Portfolio, training project, or sample test documentation

Experience Level

This is an entry-level role. We welcome candidates with no prior commercial experience, provided they have completed QA Academy or similar QA training and can demonstrate basic hands-on skills in software testing, documentation, and analytical thinking.

Candidates with internship, freelance, training project, or personal project experience are also encouraged to apply.

Job Title:

Block-Builder Engineer

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

An advanced block construction platform operating on the Ethereum mainnet that processes order flow, transaction bundles, and submits finalized blocks through relay networks in real time. It addresses neutral and efficient block building to unlock new decentralized finance capabilities, including intrablock lending and execution extensions. The system handles high-throughput data pipelines and strict latency requirements, backed by comprehensive observability and analytics to drive iterative improvements based on live production metrics. Strong engineers are essential to maintain system health under real-time load, verify data-driven hypotheses, and innovate on core protocol logic.

About the Role:

The Block-Builder Engineer will join an experienced team in Kraków or Warsaw to develop and maintain a next-generation Ethereum block construction system. You will own pipeline components that ingest order flow and transaction bundles, manage relay submission paths, and ensure stable performance under real-time load. Your work will include building and refining observability platforms, conducting controlled A/B experiments, and driving reliability improvements such as panic mitigation and latency regression detection. As you ramp, you will contribute to optimization-driven block building logic, on-chain intrablock lending protocols, and an execution extension, gaining autonomy and deep technical ownership across the core stack.

Key Responsibilities:

- Integrate and process order-flow ingestion, bundle and transaction handling, back-pressure management, and reintegration of data for block inputs.

- Develop and maintain relay submission paths to ensure end-to-end block delivery under production load.

- Build and enhance telemetry and dashboards using Grafana, Prometheus, Loki and SQL to provide trusted observability.

- Diagnose and correct measurement issues—broken counters, misleading dashboards, and erroneous denominators—to maintain metric accuracy.

- Design, execute and analyze controlled A/B experiments in production, reporting findings objectively, including inconclusive results.

- Identify and resolve system panics, dropped messages, and latency regressions, with automated tests to prevent recurrence.

- Optimize data pipelines and processing systems for high-throughput, low-latency performance.

- Contribute to the development of intrablock lending protocols and associated trusted-execution components.

- Collaborate on an execution extension (BEX) and future protocol and exchange-layer enhancements.

Required Competence and Skills:

- 2–4 years of professional software engineering experience shipping and operating production systems.

- Minimum 2 years working on Ethereum or other EVM-compatible blockchains.

- Proficiency in Rust or strong systems experience in Go, C++ or Java with eagerness to adopt Rust.

- Solid understanding of concurrent and real-time code within large, existing codebases.

- Strong SQL skills and practical experience with Python for data analysis and tooling.

- Familiarity with monitoring and analytics tooling and a drive to ensure metric correctness.

- Rigorous engineering habits, including comprehensive testing and clear distinction between verified and assumed behavior.

- Data-driven mindset with a habit of querying logs and databases to validate change impact.

Nice to Have:

- Exposure to Ethereum block-building protocols (PBS/MEV), smart contract interactions, or trading systems.

- Experience with high-throughput data pipelines, time-series databases, or large-scale analytics.

- Familiarity with Ethereum client internals (reth, geth, revm) or deploying services on Kubernetes and Docker.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

We're looking for an experienced Chief Billing Officer to lead our PSP strategy.

Responsibilities

- Lead and develop the Billing/Payments function across the business group.

- Define and execute the PSP strategy across multiple markets, including provider selection, onboarding, payment method development, and integration roadmap execution.

- Build KPI, reporting, and monitoring frameworks covering PSP performance, payment conversion, availability, liquidity, and operational efficiency.

- Optimize payment flows by improving conversion, UX, payment stability, and reducing user-facing issues.

- Partner with engineering teams to define business requirements, prioritize initiatives, and ensure high-quality delivery.

- Manage relationships with PSPs and oversee payment operations, risk management, and service performance.

- Lead the Billing department (PSP, Monitoring, Business Analysis, Liquidity, Key Account), driving team performance, process improvements, and automation.

- Audit existing payment processes, identify bottlenecks, and implement scalable operational improvements.

Requirements

- Proven experience in Billing, Payments, or PSP within the iGaming industry.

- Strong understanding of payment infrastructure, including PSPs, payment methods, integrations, conversion optimization, monitoring, payment errors, balances, liquidity management, and payment method stability.

- Experience working with complex markets, preferably CIS and/or emerging markets, where rapid adaptation and continuous payment solution development are required.

- Experience leading teams and building operational processes, including KPIs, reporting, SLAs, prioritization, and performance management.

- Ability to work effectively with engineering teams by defining business requirements, managing backlogs, and overseeing implementation quality and timelines.

- Strong analytical skills with a data-driven approach to decision-making.

- Highly organized and structured, with the ability to deliver quality results in a fast-paced environment while maintaining a high level of ownership and professionalism.

- English proficiency at B2 level or higher.
 

Our benefits to you:

☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided

🏖Paid vacations, sick leave, personal events days, days off

💵Referral program — enjoy cooperation with your colleagues and get the bonus

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences

🎯Rewards program for mentoring and coaching colleagues

✈️In-house Travel Service

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more

🎳Other benefits could be added based on your location

What You'll Do

• Administer, maintain, and troubleshoot Linux servers.
• Configure, upgrade, and optimize server infrastructure.
• Monitor server performance, availability, and overall health.
• Administer and maintain Nginx and/or Apache web servers.
• Configure backup solutions and participate in disaster recovery planning and implementation.
• Automate routine administrative tasks using Bash and other automation tools.

Moodle LMS Administration

• Install, configure, upgrade, and maintain Moodle LMS.
• Manage plugins, themes, and integrations.
• Monitor performance and troubleshoot application issues.

AWS Infrastructure

Work with:

• Amazon EC2
• Amazon Aurora Serverless
• Amazon RDS Proxy
• Amazon CloudWatch
• IAM, Security Groups, and AWS Secrets Manager

Database Administration

• Administer and maintain MySQL databases.

Cloudflare Administration

Configure and maintain:

• DNS
• CDN
• SSL/TLS
• Web Application Firewall (WAF)
• DDoS Protection
• Zero Trust

WordPress Administration

• Install, maintain, secure, and optimize WordPress websites.

Linux Security

• Perform Linux server hardening.
• Configure and maintain SSH security.
• Configure and manage Fail2Ban.
• Manage firewall rules.
• Ensure timely security patching and system updates.

Documentation

• Create and maintain technical documentation, infrastructure diagrams, and operational documentation.

Requirements

• 5+ years of Linux system administration experience.
• Experience administering enterprise Linux environments.
• Hands-on experience administering Moodle LMS.
• Experience working with AWS.
• Experience administering MySQL databases.
• Experience configuring and managing Cloudflare.
• Experience administering WordPress websites.
• Experience with Nginx and/or Apache.
• Experience managing SSL certificates and DNS.
• Strong knowledge of Linux security and server hardening.
• Experience writing Bash scripts.
• Strong troubleshooting and problem-solving skills.
• English level Upper-Intermediate (B2) or higher (both written and spoken).

Nice to Have

• Bachelor's degree in Computer Science, Information Technology, or equivalent professional experience.
• Experience writing and maintaining technical documentation.
• Experience supporting high-availability or high-load production environments.

What We Offer

• Fully remote position.
• Salary: USD 2,500–3,700 DOE (Depending on Experience).
• Opportunity to work on a long-term product.
• The opportunity to help shape and improve our infrastructure while implementing new technologies.
• Small, collaborative team with a high level of ownership and autonomy.
• Working hours aligned with Pacific Time (US).
• Participation in an on-call rotation.

Important

This role requires working during US Pacific Time (PT) business hours and participating in an on-call rotation.

When applying, please include a short cover letter in English confirming:

• Your willingness to work during US Pacific Time hours.
• Your willingness to participate in the on-call rotation.
• Your English proficiency level.
• Your ability to communicate confidently in English, both verbally and in writing.

Please note: This position requires English proficiency at Upper-Intermediate (B2) level or higher, as you will regularly communicate with English-speaking colleagues, participate in meetings, and prepare technical documentation.

Codefinity is a fast-growing EdTech company on a mission to make tech education accessible, engaging and truly practical. We help people from all over the world master in-demand programming skills and build meaningful careers in tech.

Our platform has already empowered hundreds of thousands of learners globally — from complete beginners to industry professionals — through interactive, hands-on courses designed to accelerate real skill growth.

This isn’t a position where you support creatives and write briefs for designers.

This is an opportunity to become one of the first key people in the project and build the Creative Marketing function practically from scratch — from finding new creative angles and building testing processes to forming your own team. As the company grows, you’ll have the opportunity to grow into Creative Marketing Lead.

If you’re interested not just in creating creatives, but in building a system that determines the growth rate of the entire business — this role is for you.

Your responsibilities:

• Building creative strategy for scaling Meta and other advertising channels.
• Generating, testing, and scaling new creative angles, concepts, storylines, and advertising approaches.
• Building a continuous creative testing system: from insight analysis to the production pipeline.
• Managing the full creative production cycle: setting tasks for graphic and motion designers.
• Analyzing creative performance together with the UA team and making data-driven decisions.
• Ongoing analysis of competitors, ad libraries, trends, and best practices in mobile subscription products.
• Working with the product team to find new advertising hooks and improve conversion.

• Building and developing your own Creative Marketing team.

   

Who we’re looking for:

• 2–5+ years of experience in Creative Marketing, Creative Strategy, or User Acquisition.
• Experience creating and scaling advertising creatives for Meta.
• Deep understanding of why advertising creatives work or don’t work.
• Experience building hypothesis testing processes and fast iteration.
• Ability to work with creative analytics and make data-driven decisions.
• Strong sense of marketing, storytelling, and user psychology.

• Entrepreneurial mindset and a desire to build a function, not just execute tasks.

   

Nice to have:

• Experience working in subscription products.
• Understanding of how different product monetization models work and how content affects engagement and retention.

• Experience working with AI tools for photo/video generation and creative production automation.

   

Benefits

• Work on a high-impact EdTech product within an ambitious global team
• 20 working days of paid vacation per year, plus public holidays.
• An office with a reliable shelter, generators, satellite internet, and other amenities.
• Access to our corporate knowledge base and professional communities.
• Compensation for English language learning, external training, and courses.
• Medical insurance and full sick leave compensation.
• In-office medical support and professional massage services
• Sports activities: running, yoga, boxing, and more.

We’re looking for a Senior Full-Stack Engineer / System Architect for a Vienna-based SaaS company on a mission to help organizations unleash their leadership potential — through digital feedback workflows, OKRs, mentoring, and people analytics that support managers at every level. 

The Role

We're hiring a hands-on Full Stack System Architect to lead architecture for our enterprise AI SaaS platform — spanning Angular, TypeScript, Python, Node.js, cloud infrastructure, and AI/LLM integration. The product combines agentic AI workflows with precision AI tools for people analytics, leadership development, and performance management.

This is not a management role. Our six-person remote team (four full-time, spanning Austria and India) is close-knit, well-organized, and doesn't need another layer of hierarchy. We need a technical peer — a "shark in the pond" — senior enough to challenge, mentor, and upskill the team through hands-on delivery, not authority.

What You'll Do

• Own system architecture for a scalable, enterprise-grade AI SaaS platform
• Architect across the stack: Angular/TypeScript frontend, Python/Node.js backend
• Design and ship AI/LLM integrations in production, including agentic workflows
• Take direct ownership of project streams and sprints
• Expand the team's use of AI-assisted tooling (we currently use Claude for coding and design)
• Mentor and gently challenge the team, raising standards without disrupting trust
• Manage infrastructure: cloud, CI/CD, Docker, Kubernetes, Terraform

What We're Looking For

• Proven scalable SaaS system architecture experience
• Strong Angular + TypeScript and Python + Node.js expertise
• Track record integrating AI/LLMs into production
• Solid cloud, CI/CD, Docker, Kubernetes, Terraform skills
• Strong technical leadership with genuine hands-on delivery — a senior IC, not a manager
• A collaborator who values cultural fit and trust, and can integrate into an established remote team rather than restructure it
• Nice-to-have: HR-tech / people-analytics domain experience; experience mentoring engineers remotely

Practical Details

• Full-time, flexible start 7:00–10:00 AM Vienna time
• Fully remote — anywhere in Europe or safe zones in Ukraine
• Full GDPR compliance, VPN and two-factor authentication required
• Joining a 6-person engineering team led by a strong 26-year-old lead engineer

Equal opportunity — we welcome applicants of all genders and backgrounds; our engineering team is currently male-dominated and we're working to change that.

We are looking for an experienced and data-driven Product Manager to join our team and lead the development and optimization of our website growth strategy. In this role, you will drive conversion, improve user journeys, lead data-driven experiments, and identify high-impact opportunities across the funnel. Working closely with marketing, product, design, SEO, and engineering teams, you will help turn user insights into measurable business growth while building a culture of continuous experimentation and performance improvement.

Responsibilities

• Develop and own the website growth strategy and roadmap, aligning initiatives with product and marketing goals
• Identify opportunities to increase conversion from visit to registration through analysis of user behavior and funnel performance
• Detect friction points in the registration flow and implement solutions to improve completion rates
• Plan, launch, and analyze continuous A/B tests and growth experiments to validate hypotheses and improve key metrics
• Optimize landing pages, onboarding flows, and overall user journeys to improve engagement and conversion
• Implement and monitor technical SEO improvements to increase organic visibility and site discoverability
• Improve page speed, site performance, and overall technical health of the website in collaboration with engineering teams
• Analyze behavioral data, user sessions, and funnel drop-offs to identify actionable insights
• Work closely with marketing, SEO, design, product, and engineering teams (to implement growth initiatives)
• Build a data-driven experimentation culture

Requirements

• 3+ years of experience as a Product Manager
• Experience working on web products or growth funnels
• Strong analytical and data-driven mindset
• Strong understanding of UI/UX principles and conversion-oriented design.
• Experience improving conversion funnels
• Experience running A/B tests or experimentation programs
• Understanding of SEO fundamentals
• Experience working with web analytics tools
• Ability to identify user behavior patterns and growth opportunities

• Strong ownership and ability to drive initiatives end-to-end

   

Will be a plus

• Experience in fintech, trading, or crypto
• Experience with high-traffic B2C websites
• Understanding of technical SEO
• Experience improving website performance and page speed 

We offer

• 20 paid vacation days per year
• 10 paid sick leave days per year
• Public holidays as per the company’s approved Public holiday list
• Medical insurance
• Opportunity to work remotely
• Professional education budget
• Language learning budget

• Wellness budget (gym membership, sports gear and related expenses)

   

Join our team to realize your potential and grow together with JustMarkets!

We’re looking for a Data Engineer to improve our data infrastructure and integration workflows.

This role is a great fit for someone who can quickly step into an existing environment, bring strong technical expertise, and help us build reliable, scalable solutions with a practical hands-on approach.

Responsibility:

• Design and build data templates for integration workflows
• Optimize and improve existing data pipelines
• Ensure smooth and reliable integration across SaaS systems

Requements:

• Commercial experience as a Data Engineer
• Python skills for data engineering tasks
• Understanding of building efficient, scalable, and maintainable data pipelines

Would be a plus:

• Experience with ETL / ELT

• Experience with cloud-based data platforms and modern data stack

   

Required languages

EnglishB2 - Upper Intermediate

We are looking for an IT Support Engineer!

Requirements:
- Experience in a similar position for 2 years;
- Experience with MDM solutions;
- Understanding of network technologies (TCP/IP, DHCP, DNS, VPN);
- Experience with OS (macOS, Windows at administrator level, Linux at basic level);
- Basic experience with Google Workspace or Microsoft365;
- Experience with ticket system and wiki;
- Experience with deployment tools;
- Installation, configuration, and troubleshooting software;
- Experience with modular repair;
- Experience with inventory systems;
- English B1

Responsibilities:

- Setup and support of office corporate network;
- Maintenance of office computers and office equipment;
- Asset management;
- Providing technical support to the company's employees, including remote ones;
- Managing MDM, credentials, group policies, and access rights

Our benefits to you:
🍀 An exciting and challenging job in a fast-growing business group, with the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more
🤝🏻 Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset, is guaranteed
🧑🏻‍💻 Modern corporate equipment based on macOS or Windows, and additional equipment is provided
🏖️ Paid vacations, sick leave, personal event days, days off
💵 Referral program — enjoy cooperation with your colleagues and get a bonus
📚 Educational programs: regular internal training sessions, compensation for external education, attendance at specialized global conferences
🎯 Rewards program for mentoring and coaching colleagues
✈️ In-house Travel Service
🦄 Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie/book/pets lovers, and more
🎳 Other benefits could be added based on your location

European IT recruiting company with over 8 years of experience in the market. Our clients are product IT companies (AdTech, FinTech, GameDev, etc.) in Ukraine, the EU, and the USA.

Due to growth and entry into new markets, we are building a sales department.

We are looking for Pre-Sales Managers with the potential to become Sales Managers!

🕵️‍♂️What's important to us:
- Successful experience in sales/lead generation, and experience in B2B sales is a big plus;

- Willingness to develop in the IT industry;

- Ability to work in a team and independently;

- Excellent communication skills;

- English level - Upper intermediate ;

👨🏻‍💻👩‍💻Main tasks:

- Analysis and active search for new clients, lead generation in the target markets of the IT industry (Ukraine, Europe, USA);

- Conducting primary communication with clients together with the sales manager, presentation of services, work with objections; 

- Working with CRM (HubSpot) - maintaining a client base;

- Fulfillment of KPIs for appointed meetings with clients;
- Communication with the recruiting team;

- Reporting.

💰🧁What do we offer?

- Salary + % of contracts and KPIs + social package (registration as an individual entrepreneur);

- Professional training in effective sales with a business coach provided by the company;

- You will gain experience in an international company in B2B sales in the IT industry;

- Remote work ( Full time/remote);

- Professional and cheerful team;

- No bureaucracy.

The mission:

• Execute domain research. Market demand, search and prompt volume, competitive density. Present it as a defensible case.
• Build domain authority. Pillar-and-cluster architecture, a publishing cadence we can sustain, and pages that reach top 1–3 for the queries that matter.
• Get ranked by Google/bing. Push pages to top 1-3.
• Get cited by AI. Show up in AI Overviews, ChatGPT, Claude, Gemini, and Perplexity answers for our target topics.
  
  What you’ll do:
• Run market, competitor, and trend research; identify rising and exploding topics before they’re saturated
• Own keyword and prompt strategy
• Prepare and post content that actually gets traffic
• Design and maintain site architecture, internal linking, and crawl health
• Turn engineer-written technical material into clear, publishable, SEO/GEO-optimized content – and publish it yourself in WordPress and LinkedIn
• Produce and edit visuals (Canva, AI image tools) with proper alt text and on-page hygiene
• Build backlinks and off-site presence
• Instrument and report: Search Console, Analytics, rank tracking, AI-visibility monitoring — with a clear read on what’s working and what to kill
• Automate your own repetitive work with scripts

Requirements:

1. Search – expert level: technical SEO, on-page, off-page, and AI/answer-engine optimization. Topical authority through pillars and clusters. Demonstrated history of taking pages to top 1–3 and lifting a domain’s authority.
2. Tools: WordPress admin, Ahrefs (or equivalent), Screaming Frog or similar crawler, Google Search Console, Analytics, News, SERP APIs, Canva and AI image generation. Working fluency with ChatGPT, Claude, Gemini as both research tools and ranking surfaces.
3. Writing: scientific and technical clarity – clutter cut, active voice, verb-driven sentences, paragraphs that hold a single idea. You’ll be editing PhD-level engineers; you need to be credible to them and readable to their buyers.
4. Technical background: AI/ML, data science, or computer science – enough to understand AI agents, model architectures, and data visualization without hand-holding. Python at a working level: scripting, basic OOP, API calls, automating your own routines.
5. Research instinct: you can size a market, read a competitive landscape, and spot a trend early enough to matter.
6. Ownership of the business process – SEO/AIO. The outcome is the number of organic leads with commercial intent.

To apply send:

1) two pages you took to page one, with before/after data;

2) two examples of published technical content;

3) a paragraph on a domain you think we should own and why.

WebLab Technology is a distributed software development team that adheres to the principles of remote work. We accompany stable medium and large businesses. The products developed by the team are used by corporations such as AstraZeneca, Emaar Properties, Novartis, Pfizer, ING, Philips and other clients from Europe and the USA.

We work with: JavaScript, React.js, Node.js, TypeScript, React Native, Redux, GraphQL, Storybook, CSS.

About project:

A stable product (enterprise) for creating marketing presentations, preparing accompanying presentation materials, developing sales cycle business assistants for global pharmaceutical AstraZeneca, Novartis, Pfizer, Veeva, ..) and financial (ING, Van Lanschot, ..) companies. Completely our code base, we have been developing it since 2015.

Services operate in multiple Availability Zones. The main APIs (GraphQL and REST) ​​with business logic are mainly implemented in PHP (Laravel, Yii2), but there is also code in Node.js (JavaScript/TypeScript), Python, C#. Basic infrastructure on AWS, several services from GCP. Integration with API partners (Veeva, Salesforce).

High security requirements with regular penetration testing from auditors and client companies. OWASP, SOC, ISO..

Skills we are looking for?

1. 5+ years of experience as a Software Engineer

2. Strong expertise in JavaScript, with hands-on experience in React/Redux

4. Solid understanding of algorithms and data structures — you know which solution is more efficient and why, ideally with the ability to quantify it

5. Architectural mindset — you see the big picture, work across the stack, learn new technologies quickly, and can read a UML diagram without breaking a sweat

6. Confident English skills (B1–B2 level) — you are able to read technical documentation, write clearly, and communicate verbally with the team when needed

Nice-to-haves:

1.  Experience with TypeScript

2. Familiarity with GraphQL

3. Solid algorithmic background

4. Strong CSS skills

5. Knowledge of additional programming languages beyond JavaScript

6. Degree in Computer Science or a related field

Bonuses

In addition to salary, we offer:

1. Payment for conference expenses, co-working space, software licenses, and any other work-related expenses.

2. Macbook if you need one.

3. Mobile devices, if you are involved with mobile development projects.

4. Flexible working hours and remote work, no micromanagement.

5. Modern technology stack.

6. Time for open-source development.

7. Bonus at the end of the year.

8. Paid study time.

9. Paid English courses.

10. 36 company-paid holidays per year.

11. Access to educational streaming services like Pluralsight.

12. Influence on the development of the company.

Про проєкт

Шукаємо спеціаліста, який розуміється на browser security, fingerprinting, anti-fraud та аналізі browser environment.

Основний напрямок роботи — дослідження технічних параметрів браузера, мережевого оточення та сигналів, які використовуються сучасними системами для аналізу та класифікації веб-сесій.

Основні задачі

• Аналіз browser environment та browser fingerprint.
• Дослідження параметрів, які доступні веб-сайтам та anti-fraud системам.
• Аналіз browser detection та bot detection mechanisms.
• Робота з JavaScript Browser APIs.
• Дослідження та runtime instrumentation JavaScript у тестовому середовищі.
• Аналіз User-Agent, Client Hints, Referer, Headers та Cookies.
• Аналіз WebGL, Canvas, WebRTC, WebGPU та інших browser signals.
• Аналіз IP, Geo, ASN, Proxy та network characteristics.
• Робота з HTTP/HTTPS та TLS.
• Аналіз результатів anti-fraud та fingerprinting систем.
• Пошук невідповідностей між browser, device та network parameters.
• Тестування різних browser environments.
• Взаємодія з C++ / Chromium developer для аналізу та вирішення browser-level задач.
• Інтеграція та тестування зовнішніх diagnostic / anti-fraud systems.

Вимоги

• Від 2 років практичного досвіду роботи з anti-detect browsers.
• Від 2 років практичного досвіду роботи з browser fingerprinting / browser detection.
• Від 2 років досвіду роботи з browser automation.
• Впевнене знання JavaScript.
• Глибоке розуміння Browser APIs.
• Практичний досвід роботи з browser environment та fingerprinting.
• Розуміння User-Agent, Client Hints, Referer, Headers, Cookies.
• Розуміння WebGL, Canvas, WebRTC, WebGPU.
• Розуміння HTTP/HTTPS, TLS та browser networking.
• Досвід роботи з Proxy, SOCKS5 / HTTP Proxy.
• Розуміння IP / Geo / ASN та network characteristics.

• Здатність аналізувати складні browser/network signals та знаходити невідповідності.
   

  Ми пропонуємо

• Віддалена робота.
• Довгостроковий проєкт з цікавими технічними задачами.
• Конкурентна заробітна плата.
• Оплачувана відпустка та лікарняні.
• Мінімум бюрократії та максимум технічної свободи.

Please note that this is a temporary role by end of 2026

How you’ll be impactful:

We are looking for an experienced QA engineer with a passion for quality and perfection in mind with can do attitude to join our team and take part in delivering products that will impact the lives of millions of people.

What you’ll be doing:

• Responsibility for quality aspects of the company’s products. 
• Ensure proper test coverage based on requirements, user stories, and design specifications.
• Effectively collaborate with the Dev team and Product Team.
• Deliver progress of all test activities against the plan.
• Follow testing entrance and exit criteria. Identify and manage the critical path of testing.
• Perform manual QA tests.
   

What you’ll need to be successful:

• 2+ years of hands-on Manual QA experience
• Solid understanding of QA methodologies, testing processes, and the software development lifecycle
• Experience testing web, server-side, and database-driven applications
• Familiarity with backend infrastructure and cloud platforms (AWS, Heroku)
• Comfortable managing workload across multiple concurrent projects
• At least Intermediate English (written and verbal)

Nice to Have

• QA certification (ISTQB or equivalent)
• Experience with test automation frameworks (Selenium, Appium, Cucumber)

What We Offer:

• Friendly, talented, collaborative, and entrepreneurial team 
• Work in the international company
• Competitive compensation in USD
• Fun and inclusive digital, and in-person events
• Office (hybrid working model, two days from the office), we have offices in Uzhhorod, Kosice, and Budapest

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications, and regulatory technologies.

We are looking for a Product Manager!
 

Requirements:

- 3+ years of Product Management experience in native mobile applications (iOS/Android);

- Strong understanding of product metrics, user funnels, and data-driven product decision-making;

- Hands-on experience with product prioritization frameworks and the ability to apply them in day-to-day product management;

- Experience conducting competitor research, market analysis, and identifying product growth opportunities;

- Intermediate (B1) or higher level of English.

Responsibilities:

- Own and drive the product roadmap for native iOS and Android applications;

- Lead the launch of native applications for new markets;

- Own, prioritize, and manage the native applications backlog in line with business objectives and product strategy;

- Work closely with a dedicated tech and product team to deliver high-quality product initiatives;

- Research competitors and market trends to identify opportunities for improving the native product experience and increasing competitiveness;

- Analyze key product metrics, user behavior, retention, and engagement to identify growth opportunities and drive data-informed decisions;

- Define and prioritize features that improve user experience and deliver measurable business value across different GEOs;

- Collaborate with Marketing, Traffic, Country Managers, and other stakeholders to support product growth and successful launches;

- Maintain transparent communication with stakeholders, providing regular updates on product progress, priorities, and roadmap execution.

Our benefits to you:

☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more.

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed.

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided.

🏖Paid vacations, sick leave, personal events days, days off.

💵Referral program — enjoy cooperation with your colleagues and get the bonus.

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences.

🎯Rewards program for mentoring and coaching colleagues.

✈️In-house Travel Service.

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more.

🎳Other benefits could be added based on your location.