Jobs

At Mindojo, we’re developing advanced ed-tech platforms, used by market-leading test-prep courses such as Bloomberg Exam Prep as well as language learning apps for children. 

On our platform, students engage in a rich, personalized dialogue with our AI private tutor, far surpassing the efficacy of existing resources like textbooks, video or classroom lectures, and various e-learning products. 

As a Senior AI-First Full-Stack Engineer, you’ll design lean development pipelines where AI agents assist in building, testing, and releasing product features. You’ll act as both architect and quality gatekeeper—owning solutions from idea to deployment, ensuring every learner-facing feature meets Mindojo’s high bar for reliability and impact.

Note: This role is not about developing new AI models—it’s about leveraging existing AI tools (LLM frameworks, agent orchestration, AI-augmented coding workflows) to engineer better products, faster.

Our culture

We move fast, prioritising the highest-impact work and discarding anything that does not advance learner outcomes. We operate with wide autonomy and a can-do attitude: if you spot a problem, you fix it. Transparency in plans and results, coupled with personal responsibility for quality and security, underpins every decision.

Requirements:

• Demonstrable track record of applying LLM-based tools (e.g., Cursor, Copilot, Windsurf, LangGraph, AutoGen, CrewAI or equivalent) in real-world development workflows.
• Deep software architecture and development experience across the full stack, with expert knowledge in Python, JavaScript.
• Ability to audit AI-produced code for hidden dependencies, insecure patterns and concurrency edge cases.
• Cloud infrastructure management experience along with server administration skills.
• Comfortable leading features through discovery, implementation, testing, deployment and monitoring.
• Proven ability to multitask and manage multiple priorities effectively.
• Exceptional autodidacticism.
• Excellent organizational skills and a proactive attitude are essential.
• Excellent communication skills in both written and spoken English.

Bonus points for:

• Start-up experience.
• Portfolio demonstration – a brief README, blog post or video walkthrough showing an AI-agent workflow you built and the impact it delivered.

Operations expectations:

• Availability – be responsive in Slack during core hours (UTC+3 overlap)—we value fast unblockers, not constant pings, and respect deep-focus time.
• Planning transparency – publish a daily plan in the calendar and an end-of-day progress update.
• Delivery rhythm – break work into tasks that close or deploy at least weekly.
• Incident participation – collaborate in real-time when production issues affect learners.

What you will be doing:

• Architect and maintain agent pipelines (planning → coding → test/validation).
• Review AI-generated pull requests for security, performance and edge-case correctness; no tolerance for bad code or slow, error-prone deployments.
• Automate repetitive engineering and operational tasks as soon as they are recognised.
• Own solutions end-to-end—from design through deployment to monitoring—without hand-holding or bottlenecks.
• Run focused experiments to validate product ideas and workflow improvements.
• Thrive in a fast-paced environment, adapting quickly to new challenges across various tasks.

What you won’t deal with:

• Endless ticket grooming, rigid specs, or waterfall hand-offs.
• Bureaucratic status meetings or drawn-out manual deployments.

What we offer:

• Competitive compensation package.
• Stock option plan.
• Challenging and interesting projects.
• Flexible work schedule and the ability to work from anywhere.
• A real chance to play a key part in revolutionizing education worldwide.

We are building a multi-agent AI assistant platform for college admissions.
 

• The Admissions Counselor is the central orchestrator that manages the student’s master profile, application stage, deadlines, and progress. It integrates outputs from specialized agents and delivers clear “next steps” and guidance to the student.
• Specialized agents include:
  • University Search Agent (finds and ranks universities that fit a student’s profile)
  • Application Requirements Agent (pulls official deadlines, essays, and checklists)
  • Scholarship Search & Scholarship Requirements Agents (find opportunities + detail requirements)
  • Essay Agent (edits and coaches, never ghostwrites)
  • Visa Agent (provides official student visa requirements per country)
     

Key Features:

• Shared user profile/state schema (academics, preferences, deadlines, tasks).
• Agents interact via structured JSON reports; Admissions Counselor synthesizes and decides next steps.
• Clear stage machine (onboarding → list building → essays → applications → scholarships → visa).
• Safe boundaries: factual retrieval, source citations, no essay ghostwriting, privacy rules enforced.
• Student-facing dashboard shows: current stage, top 3 next steps, nearest deadline, risks/conflicts.

Core Technical Skills

• Backend Development
  • Python (preferred) or Node.js for agent orchestration and API integrations
  • REST/GraphQL API design and implementation
  • Building modular microservices or agent-based architectures
• AI / LLM Integration
  • Prompt engineering & system prompt design
  • Working with OpenAI / Anthropic / LLM APIs (chat, JSON mode, function calling)
  • Designing agent loops (plan → act → observe → update)
• Data Management
  • Designing schemas for user profiles, tasks, and deadlines (JSON/SQL/NoSQL)
  • Handling structured + unstructured data (scraped requirements, essay drafts, etc.)
  • Event-driven state updates (logs, deadlines, user actions)
• Web Scraping & Data Retrieval
  • Extracting official university/program requirements (HTML parsing, API use where available)
  • Scholarship and visa information scraping with reliability and compliance
  • Managing freshness and source validation
• Security & Privacy
  • Storing and protecting sensitive student data (academics, demographics, financial info)
  • Compliance with privacy standards (GDPR, COPPA if under 18, FERPA if US-based)

Technical Requirements:

• Modular architecture (each agent = service with defined prompt + tool contracts).
• Agents communicate through message envelopes (JSON with corr_id, from, to, intent, payload, reply_to).
• Tooling integrations: university admissions sites, scholarship databases, government visa sites.
• Supportive, non-demanding UX with nudges and reminders.

Nice-to-Haves

• Experience with workflow orchestration tools (LangChain, LlamaIndex, Haystack, CrewAI, or custom)
• Background in edtech or admissions tech
• Experience with NLP evaluation pipelines (to measure task success, hallucination rates, etc.)
• Knowledge of role-based access control (RBAC) for multi-agent systems

About the Role:

We're growing fast and are excited to expand our team! We're looking for a passionate L1 Support engineer to join our partner team and help us continue our journey of innovation and excellence.

What We’re Looking For:

• Experience in incident management or technical support roles (1+ years) (gambling domain).
• Strong knowledge of monitoring tools like Grafana.
• Good understanding of incident escalation flows and priorities
• Ability to follow runbooks and escalation playbooks
• Knowledge of software system components (frontend, backend, infrastructure).
• Excellent communication and reporting skills.
• Ability to work in shifts (8h per day).

• English - intermediate+.

   

Technical/specialized knowledge:

• Experience with incident prioritization (P1, P2, P3) and SLA tracking.
• Hands-on with Slack, Confluence, Jira for communication and reporting.
• Knowledge of release flows, rollback notifications, escalation trees.
• Basic understanding of observability concepts (what to monitor and why).
• Knowledge of gambling/gaming systems will be a plus
• Familiarity with HTTP, APIs, databases (SQL/NoSQL basics) will be a plus.

What You’ll Do:

• Monitor production systems, services, and alerts (Grafana, PagerDuty).
• Perform initial investigation and diagnosis of incidents.
• Escalate critical incidents to the appropriate development, DevOps, Backend, QA teams.
• Participate in on-call rotations (8-hour shifts, covering 24/7).
• Collaborate with product managers and client support on incident updates.
• Document incidents, actions, and resolutions in Jira and Confluence.
• Ensure SLA compliance (response and resolution time).
• Support post-incident RCA preparation with PMs and tech leads.
• Maintain accurate shift handover logs (if needed) and communicate issues to the next shift.
• Work closely with DevOps on alert fine-tuning and incident prevention improvements

What We Offer:

• Flexible remote work schedule.
• Paid sick leave and vacation days.
• Fun and creative gifts for holidays and special employee events.
• All necessary equipment provided as needed.
• Opportunities to participate in internal company events, open discussions, product meetups, and training sessions on soft skills development.
• A supportive work environment with no micromanagement or rigid hierarchy—quick decision-making is our style.
   

If you’re ready to bring your expertise to a dynamic and growing team, join us and be a part of our exciting journey.

We are currently looking for an active, innovative, experienced Facebook Media Buyer to join our team.

Our ideal candidate must be comfortable in a fast-paced environment and be excited about the opportunity to work strategically at a high-level and the opportunity to actively participate in the daily operations.

Requirements:

• At least 1 year of commercial experience with Facebook Ads (gambling);
• Expertise in Tier 1,2 markets;
• Working effectively with a high daily budget;
• Understanding of specifics of the Meta system algorithms;
• Ability to find and correctly scale working connections;
• Generate and test new hypotheses;
• Ability to provide technical specifications to creatives and technicians;
• Understanding and ability to work with basic metrics;
• English — pre-intermediate;
• Result-oriented person with high stress management skills;

• Creative and adaptive mindset.

   

Responsibilities:

• Creation and launch of Facebook advertising campaigns;
• Searching and testing new approaches and connection;
• Testing new hypotheses and displaying statistics on them;
• Creation of technical specifications for the creation of creative materials and texts;
• Analysis of the effectiveness of advertising campaigns and their optimization;

• Reporting on advertising campaigns.

   

What we offer:

• Competitive salary: rate + high % of personal profit;
• Unlimited budgets for profitable campaigns;
• Work with TOP global brands from the world of Gambling;
• Personal prospects of quickly moving to a TL position with proper results;
• A dynamic and flexible startup environment that encourages innovation;
• Rockstar professional team (mediabuyers, affiliate, tech, creative, finance);
• 100% Remote work.

ARRISE sets the benchmark for service delivery and excellence in the iGaming industry. Playing a key role in the success of its clients, which include Pragmatic Play, a brand relied upon by the world’s biggest online casinos for its cutting-edge products, ARRISE helps to deliver exceptional gaming experiences to millions of players worldwide.

Our global team of talented and driven professionals are shaping the future of iGaming. Headquartered in Gibraltar, we have offices spanning Canada, India, the Isle of Man, Latvia, Malta, Romania, Serbia, Bulgaria, and the UAE, and more exciting destinations on the horizon.

At ARRISE, we take pride in creating growth opportunities at all levels, constantly investing in our people while welcoming new colleagues and forging strategic partnerships that open new opportunities for success. To achieve this, we bet on ourselves. We know that success is a collective effort, and our team is driven by ambition, collaboration, and a shared commitment to grow and succeed—while embracing every step of the journey.

Be part of the future of iGaming with ARRISERS! See a job that excites you? Apply now, and our friendly recruitment team will connect with you soon. Your journey starts here!
 

Required Skills:

· 5+ years of hands-on experience in commercial software development using Java.

· Solid understanding of Object-Oriented Programming (OOP) concepts and proficient in applying design patterns.

· Extensive expertise in Java Core and the Spring framework (including Spring Boot, Spring Web, Spring Data).

· Proficiency in vanilla JDBC for database interactions.

· Strong understanding of RDBMS concepts and SQL, with experience working with databases such as PostgreSQL.

· Experience with distributed messaging systems, particularly RabbitMQ.

· Proven track record in the development of microsevices and distributed transactional systems.

· Knowledge of fundamental design principles for building scalable and highly available applications.

· Good foundation in algorithms, design patterns, and data structures.

· Proficiency in unit/functional testing frameworks such as JUnit 4/5, Spock, and Testcontainers.

Will be a plus:

· Familiarity with NoSQL databases like Redis.

· Experience with Kubernetes and Nomad.

· Experience with AWS services.

· Experience with Oracle databases.

· Experience in application and infrastructure monitoring.

· Proven ability to troubleshoot production problems related to software applications.

· Exposure to high-load systems.

· Good spoken and written English skills.

Responsibilities:

As a Java Software Engineer, you will play a pivotal role in engineering and implementing a high-loaded enterprise system that serves tens of thousands of users logging into our product every day. Your responsibilities will include:

· Collaborating with cross-functional teams to design, develop, and maintain robust software solutions that meet the needs of our enterprise-level system.

· Architecting scalable and efficient Java-based components to ensure optimal performance under high load.

· Implementing best practices in software engineering, including code reviews, testing methodologies, and documentation standards.

· Optimizing system performance and reliability through continuous monitoring, troubleshooting, and performance tuning.

· Participating in the entire software development lifecycle, from requirements gathering and design to deployment and support.

· Staying up-to-date with the latest technologies and industry trends to continuously improve our system architecture and development processes.

Company offers:

· Long-term employment.

· Flexible timetable.

· Comfortable working conditions.

· Paid vacation and sick leaves.

· English lessons, gym.

· Competitive salary level.

We are developing a mobile gaming app and are looking for a skilled JSON animation expert to support our team on a part-time freelance basis. Your main focus will be creating, optimizing, and integrating animations using JSON-based formats (e.g., Lottie, Spine JSON, custom JSON animation frameworks) to deliver smooth and engaging gameplay experiences.

Responsibilities:

• Create and refine high-quality 2D/3D animations in JSON format for characters, UI, and effects.
• Optimize JSON animations for mobile performance (iOS/Android).
• Collaborate with developers and designers to ensure seamless integration.
• Troubleshoot and fix animation issues related to JSON playback in the game engine.
• Maintain consistency with the app’s visual style and gameplay requirements.

Requirements:

• Proven experience working with JSON animation frameworks (Lottie, Spine, Bodymovin, or similar).
• Strong knowledge of animation principles for gaming.
• Experience with mobile game development pipelines.
• Attention to detail and ability to deliver high-quality results on time.
• Good communication skills and availability for part-time, remote collaboration.

Nice to Have:

• Experience with procedural animations or interactive animation systems.
• Knowledge of performance optimization techniques for mobile games.

Engagement Details:

• Part-time freelance role.
• Flexible working hours with milestone-based deadlines.
• Remote collaboration.
• Potential for long-term cooperation depending on project success.

About the role:
We are seeking an experienced AI Integration & Automation Engineer to assist us in designing, developing, and implementing AI-driven solutions that optimize workflows and integrate our business systems. You will be responsible for integrating AI models via APIs, automating processes, and creating custom solutions to enhance efficiency and user experience.
 

Responsibilities:

• Design and implement AI-powered workflows for business processes.
• Integrate LLMs (ChatGPT, Claude, Gemini, etc.) and other AI services via APIs.
• Build and maintain automation pipelines (Zapier, Make, n8n, LangChain, Airflow).
• Develop custom chatbots and virtual assistants.
• Connect AI solutions to CRM, ERP, project management systems, and other business tools.
• Optimize existing automation scripts and ensure system reliability.
• Collaborate with product managers and stakeholders to translate business needs into technical solutions.
   

Requirements:

• Strong knowledge of Python and/or JavaScript (Node.js).
• Hands-on experience with API integrations.
• Familiarity with automation platforms (Zapier, Make, n8n, Airflow).
• Experience with AI tools & frameworks (LangChain, LlamaIndex, RAG pipelines).
• Solid understanding of databases and cloud services (AWS, GCP, Azure).
• Problem-solving mindset and ability to work independently.
• (Nice to have) Experience in MLOps or deploying ML models.
   

What we offer:

• Opportunity to work on cutting-edge AI projects.
• Flexible remote-first environment.
• Competitive salary and growth potential.
• Chance to influence company-wide digital transformation.

We are seeking a highly skilled Node.js expert, who excels as a collaborative team member. The role goes beyond coding, encompassing responsibilities such as handling feature aspects, specifications, technical design, development, testing, documentation, and maintenance.

Customer

Our client has rapidly become one of Europe’s most swiftly expanding FinTech companies. They oversee all aspects of financial operations, from generating virtual cards to facilitating wire transfers and maintaining customer account balances. As a payment institution, our client provides a platform that integrates financial services into its product, offering features such as account management, card payments, bank transfers, and additional services.

Requirements

• Over 5 years of experience in Back-end software development
• At least 3 years of experience with TypeScript
• Over 4 years of experience working with Node.js
• Strong experience in designing distributed and secure systems
• Good Front-end development skills
• Good understanding of microservices architectures
• Experience in designing, building, and maintaining APIs
• Experience in building and consuming REST and/or GraphQL APIs
• Familiarity with DevOps practices
• Strong experience working with AWS
• Good knowledge of testing best practices
• At least an Upper-Intermediate level of English

Would be a plus

• Experience with modern JavaScript and ES6 libraries

Responsibilities

• Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS
• Maintain a consistently high level of quality throughout all stages of the development
• Communicate effectively to collaborate closely with the team and gain full context for complex tasks
• Follow the best engineering practices, as well as company and client guidelines
• Play supervisory, advisory, and coaching roles for less-experienced engineers on the team
• Promote clean code, as well as design patterns and principles

PIN-UP Global is an international holding specializing in the development and implementation of advanced technologies, B2B solutions and innovative products for the iGaming industry. We provide certification and licensing of our products, providing customers and partners of the holding with high-quality and reliable solutions.

We are looking for a Media Buyer In App to join our team!

Requirements:

- 2-plus-year of successful proven experience with In-app 
- Ability to effectively manage large advertising Budgets (from $50,000 per month)
- Availability of successful cases in the gambling niche in the CIS/Latam markets
- Deep understanding of basic metrics of the Conversion Rate and Unity Economy (ROI, NGR, GGR, LTV, CTR, CPC, CPM, CPA, CPL, etc.)
- Experience in working with Antidetect Browser and Tracking Systems;
- A high-level understanding of how the major advertising in-app platforms (Unity, Moloco, IronSource, AppLovin, etc.)
- Ability to moderate creatives and links on the previously mentioned platforms
- Ability to work independently with platforms for collecting and analyzing user activity data on websites and mobile apps (AppsFlyer, Adjust, etc.)
- Ability to collect test results (advertising), draw conclusions and suggestions for further actions
- Ability to analyze and optimize your advertising campaigns to achieve specified KPIs
- Experience in А/B testing
- Experience with a lot of traffic, ability to work with a large array of information
- English - B1 and above
 

Responsibilities:

- Creating, setting up and optimization advertising campaigns on In-app platforms to attract new players to the Product;
- Conducting regular comprehensive analysis of own advertising campaigns and making decisions on how to improve the results;
- Regularly building Marketing Hypotheses and conducting A/B tests to generate new profitable approaches to traffic generation;
- Setting the Terms of Reference for the necessary promotional materials;
- Competent budget management;
- Together with the team, the formation of media strategies, calculation of the KPI funnel;
- Monitoring the implementation of own traffic KPIs and finding ways to continuously improve them;
- Regular reporting on performance and profit;
- Market and Competitor Analysis;
- Planning and calculation of Traffic Streams.

Our benefits to you:

☘️An exciting and challenging job in a fast-growing holding, 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, PIN-UP clubs for movie / book / pets lovers and more

🎳Other benefits could be added based on your location

Main Responsibilities

– Lead, mentor, recruit and inspire a high-performing sales team setting clear goals and expectations

– Foster and ensure a dynamic and high-performing sales culture

– Own and drive the sales pipeline, by monitoring sales and lead generation managers’ KPIs and OKRs, ensuring consistent revenue growth, customer acquisition, and monthly sales targets.

– Actively engage in direct sales activities — performing cold outreach, nurturing key prospects, and driving new business opportunities yourself.

– Take ownership of the business customer lifecycle: cold outreach, negotiating, and closing

– Work with Marketing, Risk, Account Management and Product Development teams to implement initiatives

– Ensure that all sales activities comply with relevant regulatory requirements and company policies

– Ensure initiatives are reflective of the goals, and priorities of other company divisions as appropriate

– Recommend improvements to sales strategies based on data and competitor analysis

– Demonstrate ability to deliver results under pressure and adapt to changing business requirements; ability to plan, organise, and manage multiple priorities

– Maintain fluency with technology trends shaping the Fintech market

– Manage key referral partner relationships

Mandatory Requirements

– Minimum of 3 years of progressive experience in sales leadership roles, with a demonstrable track record of successfully building, mentoring, and managing high-performing sales teams

– Extensive experience in the full B2B sales lifecycle, from lead generation and negotiation to successful deal closure with business customers

– Prior experience within the FinTech industry, particularly at Electronic Money Institutions (EMI) or Payment Service Providers (PSPs), would be a plus

– Strong analytical skills with experience in conducting market landscape analysis, identifying USPs, defining target audiences, and assessing competitors to inform sales strategies

– Expertise in setting, monitoring, and achieving sales KPIs and OKRs, coupled with experience in developing effective sales motivation and compensation plans

– Excellent collaboration skills, with a proven ability to work effectively with Marketing, Risk, Account Management, and Product Development teams to drive initiatives

– An advanced (C1) level of English proficiency, Native Ukrainian or russian language

Nice to have Understanding and experience within the FinTech industry, particularly with Electronic Money Institutions (EMI) or Payment Institutions (PI)

We offer

Empowerment Through Professional Development:

Yearly allocation for advancing your professional expertise

Unlock Your Potential:

Transparent career growth with opportunities to achieve Lead roles within 1 year, Head roles in 2 years, and even C-level within 4 years, based on exceptional performance

Performance reviews are anchored in KPIs, ensuring recognition is merit-based

Make a Lasting Impact:

Work on unique projects where your contributions can reshape company-wide processes

Bring your ideas to the table and earn exceptional bonuses through our PayDo Ideas Hub

Flexible and People-Centric Culture:

Days of paid vacation annually, with the flexibility to transfer unused days or receive compensation

Days of paid sick leave annually, accommodating emergencies and medical needs

Additional holidays aligned with your local calendar

About us

We are a Shopify agency helping international eCommerce brands from the US and Europe scale their online sales.
Even though our team is still relatively small, we already work with established clients and run several projects in parallel.
Our strengths are fast decision-making, zero bureaucracy, and a high level of responsibility for the final result.
We are growing quickly and now looking for a Project Manager who will become a key part of the team and help bring our processes to the next level.

What you’ll do

• Manage several eCommerce projects in parallel (mostly Shopify, occasionally WordPress).
• Organize the full process: from kick-off to delivery (planning, deadlines, QA).
• Communicate directly with clients (Slack, Zoom, Email) and maintain transparent communication.
• Create and track tasks in ClickUp.
• Coordinate developers, VA, designers and QA.
• Keep things structured: documentation, reports, checklists.

Who we are looking for

• 2+ years of experience as a Project Manager in IT (preferably web/eCommerce).
• Experience working with US/European clients.
• Upper-Intermediate+ English (both written and spoken).
• Ability to clearly set tasks and control their execution.
• Experience with task trackers (ClickUp / Jira / Trello).
• A proactive, responsible person who doesn’t need micromanagement.

Nice to have:

• Experience with Shopify/eCommerce.
• Basic understanding of web development processes.

What we offer

• Work with established international eCommerce brands.
• A key role in the team (influence on processes and company scaling).
• Opportunity to grow into Head of Project Management and build your own PM team in the future.
• Zero bureaucracy and quick decision-making.
• Remote work.
• Payment in USD (depending on experience level).

If you want to become not just a “task manager” but a true driver of our agency’s growth — we’d love to have you on the team.

🚀 Hi! Welcome to Megafair — an international startup provider in the skill-based and slot iGaming niche, where excitement meets intellectual challenge. We create high-quality, innovative gaming products that set new industry standards and captivate players worldwide.

With a truly global team, we work across multiple markets, blending creativity, technology, and expertise to deliver exceptional gaming experiences. Our vision is bold, and our plans are big — this is your chance to join us from the ground up and grow together with a fast-scaling startup.

If you’re ready to be part of a team where every idea matters, challenges inspire, and achievements are celebrated, MegaFair is the place to make your mark.

REQUIREMENTS

• 5+ years of proven experience as an Engineer with an architectural focus;
• Solid background in designing, building, and scaling distributed production systems;
• Strong knowledge of architectural principles, high availability, scalability, and fault-tolerance best practices;
• Experience with Apache Kafka and real-time data pipelines;
• Proficiency with Spring/Spring Boot/Spring Cloud; experience with Quarkus is a plus;
• Familiarity with DevOps practices, scripting, and Docker (power-user level);
• Strong knowledge of both relational and NoSQL databases, with advanced SQL skills;
• Experience integrating B2B systems and optimizing for performance and security;
• Comfortable working under high-load, high-volume data conditions;

• English: B2 or higher.

   

WE OFFER

• Compensation: competitive salary;
• Tech tools: modern technical equipment;
• Time Off: 20 vacation days, 10 sick days annually;
• Work-Life Balance: flexible remote, options without time tracking;
• Language Learning: reimbursement for foreign language courses;
• Support network: work with a team you can learn from, and every day;
• Diversity: we pride ourselves on our international working environment;
• Power supply: compensation for electricity, power banks, generator fuel, etc.;

• Professional Growth: emphasis on internal promotions for career advancement.

   

RESPONSIBILITIES

• Lead architectural design and development of high-performance, scalable systems;
• Collaborate with cross-functional teams to define technical strategy, align on priorities, and deliver results;
• Actively code, review, and optimize existing systems for performance, security, and stability.
• Drive integrations between platforms, ensuring seamless operation and optimal partner experience.
• Maintain high coding standards, documentation, and security best practices.

• Anticipate technical challenges, propose solutions, and ensure readiness for scaling.

   

CANDIDATE JOURNEY
Interview with a Recruiter - Interview with CTO - Test Task - Job Offer

Trueplay is a Loyalty Booster Suite that enables iGaming brands to build lasting customer relationships based on trust and mutual benefit. It features three programs that ensure player interactions with gambling platforms are exciting right from the start.

We offer solutions on three epic levels:

• Acquisition and engagement — CopyStake introduces users to an iGaming website, allowing them to bet alongside their favorite streamers.
• Retention — the Play to Earn and Hold to Earn loyalty programs keep player engagement high by guaranteeing rakeback and distributing a share of the platform’s revenue.
• Brand equity — the tokenization of loyalty points helps transform users’ affinity for a brand into a personal interest in its financial success. In Trueplay’s take on Web3 loyalty, players feel like casino stakeholders.

More than 20 iGaming brands from 18 markets are fostering player loyalty with Trueplay. 

Our internal team is currently looking for a skilled Senior ML Engineer.

It is important for us that you have:

• 5+ years of professional experience in software engineering/ML engineering
• Strong programming skills in Python (pandas, NumPy, scikit-learn, PyTorch, TensorFlow)
• Solid experience with cloud platforms (AWS/GCP/Azure) and containerization (Docker, Kubernetes)
• Hands-on experience with MLOps tools (MLflow, Kubeflow, Airflow, SageMaker, Vertex AI, etc.)
• Knowledge of data engineering (ETL pipelines, streaming data, batch processing)
• Strong background in algorithms, data structures, and distributed computing
• Experience deploying and monitoring ML models at scale
• Excellent problem-solving and communication skills

You will be responsible for:

• Designing, implementing, and optimizing end-to-end ML pipelines (data preprocessing, model training, deployment, monitoring)
• Collaborating with data scientists to move ML models from research to production
• Ensuring scalability, reliability, and performance of ML services in production environments
• Developing tools for experiment tracking, model versioning, and reproducibility
• Working with big data platforms (Spark, Hadoop, Snowflake, Redshift, etc.)
• Implementing MLOps best practices (CI/CD for ML, monitoring, automated retraining)
• Conducting code reviews, mentoring junior engineers, and leading technical discussions

We offer:

• Remote work
• Two meeting hubs in Warsaw, Poland, and Kyiv, Ukraine
• Flexible working hours
• Compensation that includes coverage for 20 days to recharge and unwind
• Additional support covering 14 days for health-related matters when needed
• Support in professional growth during the initial months, with guidance from experienced team members
• Engaging corporate events and activities
• Competitive financial compensation

About the Role

We are looking for a highly skilled Senior Fullstack Engineer with strong expertise in React and Node.js to join our growing engineering team. You will be responsible for designing, developing, and maintaining scalable web applications, collaborating with cross-functional teams, and mentoring junior engineers.

Responsibilities:

• Develop and maintain high-quality web applications using React and Node.js.
• Design and implement APIs and integrate with third-party services.
• Ensure application scalability, performance, and security.
• Collaborate closely with product managers, designers, and other developers to deliver business value.
• Write clean, maintainable, and testable code following best practices.
• Participate in code reviews and contribute to architectural decisions.
• Mentor and support team members, sharing knowledge and promoting engineering excellence.

Requirements:

• 5+ years of professional experience in software development.
• Strong proficiency in JavaScript/TypeScript, React, and Node.js.
• Solid understanding of RESTful APIs, GraphQL, and microservices architecture.
• Experience with databases (SQL and NoSQL).
• Familiarity with cloud platforms (AWS, GCP, or Azure).
• Knowledge of CI/CD pipelines, testing frameworks, and DevOps practices.
• Strong problem-solving skills and ability to work in a fast-paced environment.
• Excellent communication skills and team collaboration.

Nice to Have:

• Experience with containerization (Docker, Kubernetes).
• Knowledge of Next.js or other SSR frameworks.
• Familiarity with event-driven systems.

What We Offer

• Competitive salary and performance-based bonuses.
• Flexible working hours and remote-friendly environment.
• Professional development budget (courses, conferences, certifications).

About the App:
We maintain a fully functional audio platform with audiobooks, playlists, and tracks. The app currently uses Jetpack Compose alongside  XML views, with a roadmap to fully migrate to Compose. It integrates Media3, Firebase, RevenueCat, and Google Play Billing.

Responsibilities:

• Maintain, upgrade, and refactor complex Android app architecture.
• Rewrite  XML-based UI to Jetpack Compose, ensuring modular, testable, and maintainable code.
• Implement and optimize audio playback, including Media3, MediaSession, background playback, media notifications and android auto.
• Handle networking, caching, and pagination with Retrofit, OkHttp, Room, and Paging.
• Integrate and maintain third-party SDKs like RevenueCat, Firebase, and Google Play Billing.
• Improve UI/UX using Material3, Glide, Coil, Compose animations, and custom components.
• Conduct code reviews, performance profiling, and memory optimizations.
• Enforce best practices in architecture and Kotlin coroutines.

Required Skills:

• 4+ years of Android development experience with Kotlin and Jetpack libraries.
• Strong knowledge of Jetpack Compose, including complex layouts, animations, and integration with existing XML Views.
• Deep understanding of audio playback and media session architecture.
• Experience with dependency injection (Koin, Dagger/Hilt optional).
• Advanced networking skills (Retrofit, OkHttp, REST APIs, caching, pagination).
• Proficiency with Room, Paging, WorkManager, and Lifecycle components.
• Solid understanding of in-app purchases, subscriptions, and Google Play Billing.
• Experience in profiling, memory management, and optimizing large Android apps.
• Familiarity with image/video libraries (Glide, Coil) and custom transformations.
• Comfortable refactoring legacy code and migrating apps to modern architectures.

Why Join Us:

• Work on a full-featured audio app with real content and users.
• Lead the migration from XML to Jetpack Compose.
• Use latest Android technologies and influence app architecture decisions.