Jobs at Djinni

About DraftKings

At DraftKings, AI is becoming an integral part of both our present and future, powering how work gets done today, guiding smarter decisions, and sparking bold ideas. It’s transforming how we enhance customer experiences, streamline operations, and unlock new possibilities. Our teams are energized by innovation and readily embrace emerging technology. We’re not waiting for the future to arrive. We’re shaping it, one bold step at a time. To those who see AI as a driver of progress, come build the future together.
 

The Crown Is Yours
As a Lead NetOps Engineer, you'll design and evolve the network infrastructure that keeps our global platform fast, resilient, and ready to scale. You'll lead complex solutions across data centers, remote sites, and hybrid cloud environments while partnering across the organization to deliver secure, reliable network systems. In this role, you'll shape the future of our infrastructure through automation, cloud networking, and technical leadership that strengthens how our teams build and operate at scale.

What You'll Do

• Design and lead complex network solutions across data centers, remote sites, and hybrid cloud environments, including AWS, GCP, advanced firewall, routing, switching, VPN, and BGP technologies.
• Implement advanced infrastructure as code patterns, including remote state, modules, and workspaces.
• Design automation and infrastructure as code solutions for multi-vendor network platforms, including FortiGate, Aruba, and Juniper.
• Triage, debug, and resolve complex production issues while driving a culture of accountability and operational excellence.
• Act as a technical mentor and coach, providing guidance and feedback that helps engineers grow and deliver their best work.
• Play a critical role in shaping the team’s technical roadmap and engineering direction while fostering a culture of ownership and continuous learning.
• Join the on-call rotation, taking ownership of incident resolution and providing senior-level escalation support for critical outages.
• Maintain the health, performance, and security of our global infrastructure across hybrid environments using observability tools such as Datadog.

What You'll Bring

• Bachelor's degree in Computer Science or any suitable combination of education, experience, and training. 
• At least 5 years of network administration experience with routers, switches, firewalls, VPNs, and routing and switching protocols, including at least 3 years of cloud networking experience across AWS, GCP, and hybrid data center connectivity.
• Proven ability to architect, build, and scale complex network infrastructure.
• A strong track record of mentoring engineers, leading change and design reviews, and driving high-impact technical decisions across cross-functional teams.
• Hands-on experience with Aruba switching and FortiGate firewalls, along with a strong understanding of BGP, routing, switching, VPNs, firewalls, and hybrid cloud connectivity.
• Proven experience with infrastructure as code, Git-based workflows (GitOps), and advanced scripting in Python and Bash.
• Experience with monitoring tools such as Datadog and hands-on familiarity with AI-assisted engineering tools, including Claude, Codex, and Gemini.
• Strong communication, collaboration, and mentoring skills, with the ability to influence technical roadmaps, align cross-functional teams, explain complex infrastructure concepts to technical and non-technical stakeholders, and develop engineering talent through coaching and technical guidance.
• Strong analytical and problem-solving skills, with the ability to remain composed while leading the resolution of critical production issues.
  
  OUR BENEFITS
• Annual PTO - 24 days.
• Paternity Leave: up to 14 weeks fully paid.
• Health Insurance.
• Mental Health Solutions (includes 16 free counseling sessions per person per year).
• Home Office Reimbursement.
• Gym Reimbursement.
• English Language Classes.

• Annual Bonuses and more.

   

  JOIN OUR TEAM

  Being part of the DraftKings team means you’re always looking for new ways to break out of the box. Whether you’re data-obsessed, tech-driven, or love working with different people each day, you’ll solve some of the most exciting challenges in our industry and be supported from your very first day.

   

  READY TO OWN WHAT’S NEXT?

  We know finding a new job can be intimidating. Don't let imposter syndrome stop you from applying! Even if you don't think you tick off every box in this job description, we'd still love for you to apply or join our Talent Community.

  DraftKings is proud to be an equal opportunity employer. We do not tolerate discrimination of any kind and are committed to providing equal employment opportunities regardless of your gender identity, race, nationality, religion, sexual orientation, status as a protected veteran, or status as an individual with a disability.

Full Remote·Countries of Europe or Ukraine·2.5 years of experience·English - B2·Fintech

We’re looking for a proactive Senior Outbound SDR Lead to support our sales team by building and managing outbound pipeline.

This role is ideal for someone who understands outreach mechanics, is comfortable with volume, and wants to grow into a sales-focused role.

What You’ll Do

• Run high-volume outbound outreach (LinkedIn, email, etc.)
• Identify and research potential leads (founders, decision-makers, heads of departments)
• Personalize outreach messages based on ICP and context
• Manage follow-ups and keep pipeline active
• Manage and update CRM records, spreadsheets, and follow-up queues
• Track outreach performance (reply rates, conversions)

• Support the team with lead research and data enrichment

   

You’re a Great Fit If

• You have experience in outreach / lead generation / SDR support
• You’re comfortable working with outreach targets and volume
• You know how to research and personalise messages
• You can balance speed and quality in execution
• You’re structured, organised, and consistent in daily work

• You work independently and proactively improve workflows

   

Required Skills

• Strong written English (Upper-Intermediate+)
• Experience with outbound outreach or lead generation
• Ability to manage pipelines, follow-ups, and structured workflows
• Confidence working with Google Sheets / CRM systems

• Attention to detail and consistency

   

Nice-to-Have

• Experience with cold email tools (Apollo, Lemlist, Instantly, etc.)
• Familiarity with LinkedIn Sales Navigator
• Basic understanding of B2B sales funnels
• Experience with automation tools (Zapier, Make)
• Experience using AI tools (ChatGPT, etc.) for outreach

• Experience working with US / EU markets

   

With Us You’ll Have

• Fully remote and flexible working schedule
• Performance-driven compensation (hourly or mission-based)
• Fast-moving, no-micromanagement startup environment

About the Role:

You will be joining a team building a secure, privacy-focused communication platform designed for organisations where data protection, control, and regulatory compliance are mission critical. The product provides encrypted messaging, voice, and video communication built on a zero-trust security architecture with strong end-to-end encryption. It supports flexible deployment models — including on-premise and controlled cloud environments — and is used by security-sensitive and regulated organisations to protect confidential communications and maintain full data sovereignty.

As a QA Automation Engineer, you will be responsible for building and maintaining automated test coverage across iOS and Android, ensuring the reliability and integrity of features where quality is not just a standard — it is a compliance requirement.

What You Will Work On:

• Designing, writing, and maintaining automated test suites for iOS and Android mobile applications using Appium and Java;
• Covering encrypted messaging, voice/video calling, file sharing, and meeting features with automated scenarios;
• Developing and maintaining test frameworks and reporting pipelines with TestNG and Allure;
• Integrating automated tests into CI/CD workflows via GitLab pipelines;
• Managing test cases and documentation in Testiny; tracking defects in Jira;
• Collaborating with developers and product managers throughout the full QA cycle;
• Leveraging Claude for AI-assisted test generation and QA workflow optimization.

Required Skills:

• At least 6 months of hands-on experience in mobile test automation for iOS and Android applications
• Hands-on experience with Appium for mobile test automation;
• Proficiency in Java for writing and maintaining automated test scripts;
• Experience with TestNG as a test framework;
• Allure for test reporting and result visualization;
• Jira for bug tracking and task management;
• Testiny for test case management;
• GitLab - CI/CD pipelines, MR workflows, test integration;
• Claude - AI-assisted tooling in QA workflows;
• English level: Intermediate+ or higher (written and spoken).

Nice to Have:

• Experience testing security-sensitive, privacy-focused, or compliance-driven products (HIPAA, GDPR, ISO 27001, etc.);
• Familiarity with zero-trust security concepts or end-to-end encryption;
• Experience testing real-time communication features: VoIP, video calls, WebRTC;
• Basic API automation skills (REST Assured or similar);
• Understanding of cross-device and cross-platform compatibility testing strategies.

Tech Stack:

Appium · Java · TestNG · Allure · Jira · Testiny · GitLab · Claude

We’re a fast-growing media buying team, backed by well-known traffic acquisition experts in the iGaming industry. Thanks to this, our team has not only cutting-edge infrastructure and budgets, but also the opportunity to work on terms that are unavailable to other teams.
 

We’re looking for a Media Buyer who can start campaigns from zero and scale them profitably.

Key Responsibilities:

• Launch and scale high-performance advertising campaigns across Facebook and/or In-App networks (Unity, AppLovin, Ironsource, etc.) and/or Google PPC
• Oversee full-cycle integrations between mobile applications, attribution platforms (AppsFlyer, Adjust), and trackers (Binom, Keitaro) to ensure flawless data flow.
• Conduct deep-dive analysis of active campaigns, optimizing for key performance indicators (ROI, CPA, LTV) to maximize profitability.
• Develop detailed briefs for the design team and motion designers; constantly test new creative angles and landing pages.
• Monitor daily expenditures and performance metrics, providing detailed daily reports to ensure budget efficiency and target alignment.
   

Requirements:

• At least 2+ years of hands-on experience in Media Buying, with a track record of managing high-volume traffic.
• Deep knowledge of the Gambling/iGaming vertical is mandatory.
• Strong experience in launching and scaling campaigns specifically for the Tier-2 and Tier-3 markets.
• Experience managing significant monthly budgets of $50,000+ with proven ROI.
• Solid experience working within professional arbitrage teams or media buying agencies.
• Expert knowledge of launching and optimizing campaigns for both iOS and Android platforms.
• A thorough understanding of the casino economy, including player lifecycle, conversion funnels, and retention metrics.
• English at a B1 (Intermediate) level or higher is required. Proficiency in Russian is a significant advantage.

• 2+ years of experience in 2D animation for slot games
• Strong proficiency in Spine (2D skeletal animation, clean hierarchy, proper timing, and easing)
• Solid understanding of animation principles, including timing, spacing, weight, and rhythm
• Understanding of slot game mechanics and win-cycle animations
• Ability to work within technical and mobile performance constraints
• Strong attention to detail and ownership of the final quality
• Ability to work independently while collaborating effectively in a remote team

• Create high-quality 2D animations for slot games, including symbols, characters, backgrounds, UI elements, and visual effects
• Build and implement animations in Spine, ensuring smooth integration and optimal performance
• Animate slot symbols (idle, win, landing, anticipation, bonus, etc.), win effects, and UI interactions
• Create visual effects and additional animation polish using Adobe After Effects for in-game assets and promotional materials
• Collaborate closely with game designers, artists, and developers to ensure animations align with the game’s visual style and mechanics
• Optimize animations for mobile devices while maintaining visual quality and performance
• Deliver clean, well-structured Spine projects and JSON exports ready for integration
• Maintain consistent animation quality and visual style across multiple slot themes and projects

• Understanding of VFX principles for slot games
• Experience using AI tools to optimize animation workflows
• Basic understanding of 3D animation pipelines

N-iX is a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in 9 countries: Poland, Ukraine, Sweden, Romania, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies.

N-iX is seeking an experienced Middle Content Marketing Specialist to join our team. You will play a key role as a member of the N-iX Marketing Team, crafting impactful content to promote N-iX and its services to global audiences. If you are proficient in English and aspire to contribute to a dynamic, multi-functional team, we invite you to explore this opportunity further.

Essential Duties and Responsibilities:

• Deliver thought-provoking content that resonates with target audiences;
• Collaborate on marketing campaigns contribute ideas to the content marketing strategy;
• Engage with colleagues across the company to create unique content that reflects our customer value proposition;
• Collaborate with domain and tech experts to produce powerful content that showcases the company’s expertise;
• Develop a broad range of high-quality marketing copies, such as blogs, landing pages, and case studies, to promote company services, increase brand awareness, attract site visitors, and generate leads;
• Continuously work on improving content on the company’s global website: n-ix.com;
• Collaborate with SEO experts to ensure all website content is optimized for search engines.
• Gather insights and conduct market research.
• Work with designers to create appealing visuals.

Qualifications:

• Passion for writing and a strong interest in marketing and tech;
• Advanced+ level of English;
• 2+ years of commercial writing experience;
• Experience in content editing, managing content writers, and the content production pipeline;
• Excellent writing skills in English;
• Experience in digital marketing, advertising, tech, or related fields;
• Strong knowledge of SEO best practices for the creation of digital content;
• Experience in prompting and navigating AI tools, such as ChatGPT;
• Experience with key marketing analytics tools and methodologies (Google Analytics, storytelling, influencer marketing, etc.).
• Experience in content promotion and distribution.
• Ability to translate complex concepts into clear and easy-to-understand content that resonates with a variety of audiences;
• People and project management skills.
• Attention to detail;
• Strong analytical skills;
• Ability to work independently, a positive team-oriented attitude; 
• Collaborative working style. 

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

About the project

US-founded media company operating email newsletters at scale – millions of subscribers across finance, health, and business verticals. Small engineering team, flat structure, direct ownership, fast iteration. No layers of approval, no large org to navigate.

You'll own the integration and infrastructure layer alongside a counterpart engineer who handles the AI and automation side. The AI systems depend on what you build staying reliable.
 

What you'll work on

• Custom CRMs and operational tools tailored to internal workflows
• Browser automation pipelines with Playwright for interacting with and validating UI workflows
• Distributed automation infrastructure: proxy management, session handling, request routing
• PostgreSQL data models and pipelines that AI systems and operational teams depend on
• Integrations with third-party APIs and platforms – including ones with inconsistent or undocumented APIs
   

Requirements

• 6+ years of backend development
• 4+ years of production Python
• Strong PostgreSQL: schema design, indexing, query optimization – not just ORM usage
• Hands-on Playwright or equivalent (Selenium, Puppeteer) for real browser automation
• Experience with proxy infrastructure: rotation, health checking, geographic routing
   

Tech stack

Python · FastAPI · PostgreSQL · Playwright · Docker · proxy infrastructure · REST APIs and webhooks · third-party platform integrations
 

Conditions

• B2B contract, full-time
• Warsaw office (onsite preferred, remote considered)
• Direct collaboration with technical PM and small senior team
• Fast-moving environment: ambiguity, shifting priorities, growing scope

We're looking for a talented Manual QA Engineer (1-2 years of experience) to join our Development team. You'll work on different web and mobile projects, helping the team deliver quality products.

Requirements:

• 1+ year of experience as a QA Engineer in an outsourcing company
• Experience testing web apps and mobile applications (iOS and Android)
• Experience working on multiple projects simultaneously
• Understanding of the software development lifecycle (SDLC)
• Knowledge of fundamental testing theory
• Skills in writing test documentation
• Experience working with Bug Tracking Systems
• English—Elementary+ (A2) or higher

Nice to have:
Experience using AI agents in testing

• Experience working with ClickUp

Responsibilities:

• Testing websites and mobile applications (iOS and Android)
• Working on multiple projects 
• Close collaboration with PM, developers, and clients
• Manage all testing activities independently for assigned projects

What we offer 

• Health Insurance.
• GYM.
• English classes.
• 22 days off and 12 sick days.
• Paid national holidays.
• Teambuilding twice per year.
• Welcome box.

Please send your CV.

Please respect your time and ours; do not apply if you don't have experience.

We're looking for a talented Manual QA Engineer (2-4 years of experience) to join our Development team. You'll work on different web and mobile projects, helping the team deliver quality products.

Requirements:

• 2+ year of experience as a QA Engineer in an outsourcing company
• Experience testing web apps and mobile applications (iOS and Android)
• Experience working on multiple projects simultaneously
• Understanding of the software development lifecycle (SDLC)
• Knowledge of fundamental testing theory
• Skills in writing test documentation
• Experience working with Bug Tracking Systems
• English—Elementary+ (A2) or higher

Nice to have:
Experience using AI agents in testing

• Experience working with ClickUp

Responsibilities:

• Testing websites and mobile applications (iOS and Android)
• Working on multiple projects 
• Close collaboration with PM, developers, and clients
• Manage all testing activities independently for assigned projects

What we offer 

• Health Insurance.
• GYM.
• English classes.
• 22 days off and 12 sick days.
• Paid national holidays.
• Teambuilding twice per year.
• Welcome box.

Please send your CV.

Please respect your time and ours; do not apply if you don't have experience.

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 Information Security Compliance Manager!

Requirements:

• 3+ years of experience in Information Security, IT Security, GRC, Compliance, Risk Management, or a similar role.
• Practical experience with implementation, maintenance, or audit support for information security standards and frameworks, including ISO 27001 and PCI DSS Level 1.
• Understanding of information security governance, risk management, policies, procedures, controls, and audit evidence collection.
• Ability to coordinate security activities across technical and business teams.
• Experience working with internal stakeholders, auditors, IT, engineering, infrastructure, product, and compliance teams.
• Strong communication skills and ability to translate security requirements into clear business and technical actions.
• English level sufficient for written communication, documentation, and audit-related activities.

Will be plus

• Experience in FinTech, iGaming, payments, or regulated environments.
• Experience with security certification projects, external audits, and regulatory inspections.
• Knowledge of cloud security, IAM, vulnerability management, incident management, and SSDLC processes.
• Experience with PCI DSS Level 1 preparation or certification.
• Experience working in a group company structure with several legal entities and distributed teams.
• Security certifications such as ISO 27001 Lead Implementer, ISO 27001 Lead Auditor, PCI DSS QSA or ISA, CISM, CRISC, CISSP, or similar.

Responsibilities:

• Act as Information Security Officer for one of the companies in the group, either Frog or FinTech.
• Support the implementation and ongoing maintenance of information security standards, including ISO 27001 and PCI DSS Level 1.
• Coordinate security activities at the company level and ensure alignment with group-level cyber security strategy.
• Serve as a link between the central Security team, company management, and local technical teams.
• Support security governance processes, including policies, procedures, risk assessments, control implementation, and audit evidence collection.
• Coordinate internal stakeholders during security audits, assessments, remediation activities, and certification projects.
• Track security risks, gaps, action items, and remediation progress within the assigned company.
• Ensure proper communication of security requirements to business, product, IT, engineering, and infrastructure teams.
• Support incident, vulnerability, access management, and compliance-related processes where company-level coordination is required.
• Prepare regular status updates, reports, and escalations for security leadership.

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

🗣Free internal English courses

✈️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 
 

Softsich is an international product tech company that develops scalable B2B digital platforms. We’re on the lookout for an experienced Payment Manager who’s ready to grow with us and shape high-load, data-driven solutions used by international partners.

If you are systematic and focused on business impact, this role is for you.

Responsibilities

• Prepare daily and weekly analytics across all brands and GEOs, segmented by payment methods, banks, payment providers, and traffic sources.
• Own and monitor key payment performance metrics, including Approval Rate (AR), FD/SD conversion, User/Transaction ratio, Number of Attempts per User, and Chargeback Rate, identifying opportunities to improve performance.
• Collaborate with B2B platform teams by creating and managing tasks related to enabling/disabling payment methods, adjusting cascading and routing weights, and optimizing payment processing.
• Automate, monitor, and optimize cashier performance across all brands, ensuring the availability, proper ordering, and efficiency of payment methods while identifying opportunities for improvement.
• Create, maintain, and update documentation for White Label (WL) brands.
• Communicate with and resolve requests from clients and partners in collaboration with the Support (B2B) and Affiliate (B2B/B2C) teams.
• Support the launch of new GEOs and projects by configuring payment method ordering and performing basic pre-launch validation.

Requirements 

• At least 1 year of experience working with payment methods, including PSPs, payment gateways, alternative payment methods (APMs), e-wallets, and card processing solutions.
• Experience working with B2B / White Label payment solutions and multi-brand, multi-GEO environments.
• Strong understanding of the payment lifecycle, decline reasons, and methods for improving Approval Rate (AR).
• Experience analyzing payment KPIs, including AR, FD/SD conversion, Chargeback Rate, and other performance metrics.
• Hands-on experience with payment dashboards, provider admin panels, and internal payment management consoles.
• Strong sense of ownership, structured thinking, and excellent attention to detail.
• Understanding of cross-functional workflows between Support, Affiliate, Technical teams, and payment providers.
• Required: Experience with Tableau and a basic understanding of different traffic sources/types.
• Nice to have: Experience working with SoftSwiss and TrueLabel platforms.

What we offer:

– Flexible schedule and remote format or offices in Warsaw/Kyiv — you choose.

– 20 paid vacation days, sick leaves, and health insurance (UA-based, other locations in progress).

– A supportive, friendly team where knowledge-sharing is part of the culture.

– Coverage for professional events and learning.

– Birthday greetings, team buildings, and warm human connection beyond work.

– Zero joules of energy to the aggressor state, its affiliated businesses, or partners.

Send over your CV now — we’d love to get to know you better!

Reverse Engineer (Android / Windows)

About the Role

We’re looking for a highly skilled Reverse Engineer to analyze, understand, and modify complex software systems across Android and Windows platforms. You will work on low-level system components, proprietary protocols, and real-world production binaries—going far beyond basic static analysis.

This role requires deep technical expertise in native code, system internals, and runtime behavior, with a strong focus on practical reverse engineering and problem-solving.

Responsibilities

• Reverse engineer Android and Windows applications (Java/Kotlin + native C/C++)
• Analyze compiled binaries, obfuscated code, and packed applications
• Perform dynamic instrumentation, tracing, and runtime analysis
• Understand and modify system-level behavior (services, drivers, IPC, networking)
• Reverse proprietary protocols and data formats
• Identify security mechanisms, protections, and bypass techniques
• Develop tooling, scripts, and automation for analysis workflows
• Collaborate with engineering teams to integrate findings into products

Requirements

Core Skills

• Strong experience with reverse engineering tools:
  • IDA Pro / Ghidra / Binary Ninja
  • Frida, LLDB, WinDbg, x64dbg
• Solid understanding of:
  • Assembly (ARM, ARM64, x86/x64)
  • Native code (C/C++)
  • Memory management, calling conventions, binaries

Android

• Deep understanding of Android internals:
  • ART / Dalvik runtime
  • Binder IPC
  • System services & HALs
• Experience reversing APKs and native libraries (.so)
• Familiarity with AOSP structure and system components

Windows

• Understanding of Windows internals:
  • User-mode & kernel-mode architecture
  • Windows APIs, services, drivers
• Experience analyzing PE binaries, DLLs, and system behavior

Nice to Have

• Experience with iOS reversing (Objective-C / Swift, Mach-O)
• Knowledge of anti-debugging / anti-tampering techniques
• Experience with emulators, virtualization, or sandboxing
• Cryptography and protocol analysis experience
• Exploit development or vulnerability research background

What We Expect

• Ability to work with incomplete information and figure things out independently
• Strong debugging mindset and curiosity
• Focus on real-world results, not just theoretical analysis
• Clean and well-documented findings

About the Role

We’re looking for an experienced AOSP Engineer to work on deep Android system-level modifications and customizations.

We’ve built a product-focused GovTech platform that removes the gap between virtual and physical phones, and this role is critical in pushing Android beyond standard device behavior.

You will work directly with AOSP internals, modifying core system components, services, and hardware abstractions to achieve production-grade behavior under non-standard environments.

Responsibilities

• Customize and extend AOSP for specific product requirements
• Modify and debug Android system services (framework + native layers)
• Work with HALs, Binder IPC, and low-level system components
• Implement and adjust behavior related to:
  • Device identity & system properties
  • Networking, telephony, sensors, and system state
  • Power, battery, and lifecycle behavior
• Integrate and adapt Android builds for virtualized / emulated environments
• Debug complex issues across Java/Kotlin and native C++ layers
• Analyze system logs, traces, and crashes (logcat, tombstones, systrace, etc.)
• Collaborate with reverse engineers and backend teams on system behavior

Requirements

Core Skills

• Strong experience with AOSP (building, modifying, debugging)
• Solid knowledge of:
  • Android architecture (Framework, System Services, HAL)
  • Binder IPC and Android service model
• Proficiency in:
  • C++ (NDK / native layer / Linux Kernel)
  • Java / Kotlin (framework layer)

System-Level Understanding

• Experience with:
  • SELinux policies and system permissions
  • Android boot process (init, Zygote, system_server)
  • System properties and device configuration
• Ability to debug across layers (kernel ↔ HAL ↔ framework)

Tools

• adb, fastboot, logcat, systrace
• Debugging tools (gdb/lldb, ndk-stack)
• Build system (Soong / Make)

Who This Is For

This role is for engineers who:

• Enjoy working below the app layer
• Are comfortable breaking and rebuilding Android internals
• Prefer solving real system problems over building UI

Description

The engagement supports a maintenance assessment and advisory for a legacy mainframe environment built primarily on COBOL, running mission-critical batch and online workloads. The objective is to establish a fact-based understanding of the current application estate and its support model, and to define a scoped, low risk maintenance pilot as the basis for a potential longer term managed services engagement. 

The initial advisory phase is an assessment structured in three stages: a scope-alignment workshop to agree services, ownership, and boundaries; a current-state assessment of the code estate, data, batch/online flows, operations, and ticket history to establish baselines and pain points; and a pilot-identification stage to prioritize candidate use cases and define objectives and success metrics. The phase is diagnostic in nature — it covers evaluation, characterization, and effort estimation only, with no code remediation or production changes performed during assessment. Success depends heavily on timely access to client subject-matter experts and to the target environment.

Requirements

• Deep mainframe experience on COBOL-based estates.
• Hands-on experience with Hitachi VOS-family mainframes and the XDM/DCCM3 and XDM/RD stack (or demonstrable deep equivalence from IBM CICS/IMS-DC and DB2, with willingness to ramp on the Hitachi dialect)
• Proven ability to characterize a multi-million-LOC estate across online, batch, data, and integration tiers and translate it into complexity and criticality assessments.
• Experience defining maintenance or support operating models (roles, SLAs, runbooks, escalation) for legacy systems.
• Able to critically validate AI-generated analysis against source code and SME input before it informs decisions.
• Able to lead technical discovery and deep-dives directly with client subject-matter experts.
• Strong stakeholder-facing communication, including presenting findings and recommendations to senior audiences.

Job responsibilities

• Own the technical discovery and characterization of the legacy mainframe COBOL estate.
• Produce complexity, criticality, and maintainability assessments of applications, batch flows, and integrations.
• Map application, data, and batch dependencies to identify risks and single points of failure.
• Oversee AI-assisted analysis and validate machine-generated findings against source and SME input before use.
• Define the proposed target maintenance operating model and support approach.
• Scope and prioritize candidate use cases for a subsequent maintenance pilot.
• Direct the work of the team and consolidate outputs into architectural findings.
• Present assessment outcomes, risks, and recommendations to client and internal stakeholders.

We are building one of the most powerful live-streaming platforms, already connecting 400K+ monthly active users through live events, interactive video chats, and real-time community experiences. Our mission is bold: bring joy, fight loneliness, and deliver safe, ad-free entertainment that keeps people coming back. This is a complex, fast-moving space, and we love it that way! So, you will join a passionate, expert team tackling everything from scaling AI-powered recommendations to launching high-impact, data-driven features that boost monetization and engagement. Every idea counts here, and every release reaches a massive global audienceWe are now expanding into Arab countries and Europe, enhancing content quality, and rolling out new features to keep users hooked. We are among the Top 5 streaming products in the US and rank in the Top 10 worldwide. Our next milestone: break into the global Top 5, and we are moving fast to make it happen
 

About your role: This is your opportunity to take full ownership of marketing strategy, budgets, and growth for a global product that already ranks among the top in its niche. You will lead the charge toward $1.2M monthly marketing spend, driving impact across acquisition, retention, and monetization in Tier-1 markets. This role is for someone who thrives in dynamic environments, builds data-driven strategies, and knows exactly how to turn great creatives and hypotheses into measurable business results

In this role, you will:

• Lead strategic product marketing: develop and execute a comprehensive growth strategy
• Scale the product to a monthly budget of $1,200,000 within defined KPIs
• Build a traffic and product-marketing hypothesis roadmap to improve marketing metrics through continuous experimentation
• Coordinate and manage a cross-functional team (UAM, Creative, ASO, PMM) to achieve KPI
• Establish testing frameworks, scaling rules, and control systems for CPA and ROI
• Lead, hire, and grow your team — hold 1:1s, performance reviews, and expand the department
  
  It’s all about you:
• 5+ years of experience in performance marketing for mobile apps (preferably in video streaming / live / social apps)
• Proven track record of managing $1M+ monthly budgets and leading teams of 5+ people
• Deep understanding of unit economics, cohort analysis, and performance marketing metrics
• Strong knowledge of advertising auctions, attribution models, and MMP tools
• Hands-on experience in traffic acquisition and scaling channels
• Expertise in marketing analytics with BI tools (Tableau, Data Studio, AppsFlyer, Firebase)
• Experience with MarTech solutions and process automation
• Understanding of ASO, SEO, marketing funnels, and influencer collaborations
• Ownership mindset and strategic thinking with a focus on measurable growth outcomes
  
  What we offer:
  Care and support: 
• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
• Comfortable working environment:
• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
• Investment in your future:
• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
  
  Hiring process:
• Intro call
• Technical interview
• Interview with Hiring Team
• Bar-rasing 
• Reference check
• Offer