Jobs at Djinni

About the role and client:
We’re looking for a talented and detail-oriented Node.js/AI engineer with strong experience in AI and Node development. You'll work with the product team to build AI assisted solutions.

Responsibilities:
- Integrate AI services (LLMs - classification systems, zero-shot, text generation, etc) into new and existing application architectures
- Adjust, refine, and version AI prompts and workflows to improve accuracy, reliability, and real-world performance in production systems
- Collaborate with designers, peers, and management to deliver consistent user flows and experiences
- Thoroughly test and debug code, participate in code reviews, provide documentation, and ensure systems meet quality standards

Requirements:
- At least 5+ years of experience as a full-stack engineer/Back-end engineer;
- Hands-on experience integrating AI or ML services into applications, including prompt design and iteration for LLM-based systems;
- A thorough understanding of how model parameters change output;
- Experience integrating third party APIs;
- Strong proficiency with Node.js, Express, etc and building RESTful and event-driven backend services;
- Comfortable working across multiple codebases and projects simultaneously;
- Experience with databases (primarily SQL) and data modeling for real-world applications;
- Attention to detail and strong testing experience.

Nice-to-Have:
- Knowledge of current AI models/services and their tradeoffs and advanced NLP techniques;
- Experience fine tuning models and building advanced chat bots;
- Familiarity with automated, testing frameworks (e.g., Jest, Cypress);
- Experience with monitoring, logging, and production debugging.

What the client offers:
- Competitive salary + performance bonuses;
- Remote‑first, outcome‑driven culture (potential for hybrid in Kyiv);
- Direct access to leadership, fast decisions, zero corporate layers;
- Opportunity to build and lead the AI function as we scale.

LOOKING FOR CANDIDATES WHO IS READY TO WORK FROM OFFICE IN LVIV!

Job Description

• 4+ years of Front End development experience
• Web UI Application Development
• Javascript / HTML5 / CSS3
• Experience with CLI tools like webpack or other build tools
• Angular 18+ is required
• RxJs, Websockets
• KonvaJS will be a plus
• Agility to adapt to technologies and processes quickly
• Upper intermediate English (written and spoken)
• Ability to work in a fast moving and multicultural environment

Job Responsibilities

• Development and integration of software changes
• Development of HMI
• Common Platform new features design and development
• Defects analysis and fixing
• Writing and performing system integration tests
• Other engineering support and maintenance activities for Common Platform software product
• Be able to work with physical HW to test UI changes
• Take part in the full software development life cycle including development, test, continuous delivery and support

Department/Project Description

Our client is a leading world international company which provides a dynamic, automated printing solution allowing users to create and monitor label printing on large manufactures. Our team is working together with the client as a single unit extending the capabilities of a Common Platform, a microservice-based system which provides a set of services to control printers, including the HMI layer. The main product features include a customizable web browser interface for operators to design labels, manage and monitor printers individually or in groups, access printer dashboards, configure and manage automated printing applications dynamically.

Motorsport Network is currently seeking a Technical Support Engineer to join our team on a full-time basis. This role will primarily involve Office 365 administration, encompassing licensing, SharePoint administration, MS Azure, and Azure Active Directory troubleshooting, as well as providing customer support related to website subscriptions, account access, and payment inquiries. 

JOB DUTIES 

• Providing technical support to internal users across Microsoft 365 applications, including Outlook, Teams, SharePoint Online, OneDrive, Azure, and Azure Active Directory.  
• Managing Microsoft 365 user accounts, licenses, permissions, and access requests.  
• Providing customer support for website subscriptions, including account access, subscription management, payment-related inquiries, and troubleshooting.  
• Managing support requests through Zendesk or a similar ticketing platform and delivering timely, accurate resolutions.  
• Maintaining the Google Workspace environment, overseeing user accounts, groups, permissions, and settings.  
• Investigating and resolving technical issues related to hardware, software, networking, and cloud-based services.  
• Working closely with internal teams to ensure effective IT support across all areas of the business. 
• Rotating shift schedule, 7 days a week (including weekends and public holidays): 10:00 AM–7:00 PM, 4:00 PM–1:00 AM, and day off. 

EXPERIENCE/QUALITIES DESIRED 

• 2 years of experience in providing technical support. 
• Familiarity with website monitoring services like Pingdom or similar platforms. 
• Proficiency in investigating and resolving technical issues, collaborating within and across teams, and utilizing troubleshooting tools and practices. 
• Team-oriented, yet able to work independently; 
• Great interpersonal skills and comfortable communicating with individuals and teams at all levels; 
• Intermediate/ Upper Intermediate level of English and excellent writing skills. 

As we continue to grow and evolve, we are expanding our team to support new initiatives and meet the increasing demand for our services. We’re currently looking for a talented and data-driven Web Analyst who can help us make smarter decisions and take our digital performance to the next level.

What We’re Looking For:

• strong hands-on experience with Google Tag Manager (GTM) and Google Analytics
• proven ability to set up, monitor, and interpret A/B tests using third-party platforms
• experience with app analytics tools like Firebase and Appsflyer
• working knowledge of BigQuery (BQ) and comfort working with large data sets
• a proactive attitude and a knack for solving problems before they impact performance

What You’ll Be Doing:

• setting up and maintaining web analytics tools, including Google Tag Manager and Google Analytics;
• planning, executing, and analyzing A/B and multivariate tests using third-party tools;
• supporting existing scripts and analytics setups, troubleshooting issues, and identifying bugs;
• creating custom dashboards and reports using BigQuery and other tools to help stakeholders make informed decisions;
• working with mobile application analytics platforms such as Firebase and Appsflyer.

What We Offer:

• paid vacations and sick leave;
• remote work — flexibility to work from wherever you’re most productive;
• challenging projects — opportunity to work on exciting and high-impact initiatives;
• employee discounts — enjoy special offers and discounts on our floral and gift products.

We are looking for an experienced Quality Control (QC) Manager to drive the quality assurance function within our Support organization. This role is focused on ensuring accuracy, consistency, and fairness across all evaluation processes, while continuously improving quality standards, reporting, and team performance.

The ideal candidate has a strong analytical mindset, hands-on QA experience, and the ability to optimize processes and elevate quality frameworks in a fast-paced environment.

HOW YOU WILL MAKE AN IMPACT

• Ensure high-quality standards across all customer support interactions
• Monitor and achieve QC KPIs (coverage, accuracy, consistency of evaluations)
• Conduct regular calibration sessions to maintain unified evaluation standards
• Review and validate evaluations, identify discrepancies and improvement areas
• Prepare regular reports (weekly/monthly) on quality performance and key metrics
• Analyze recurring issues and provide actionable recommendations
• Participate in the development and update of QC guidelines, scorecards, and internal standards
• Identify inefficiencies and drive continuous improvement of QC processes
• Collaborate with Team Leads, L&D, and cross-functional teams to enhance service quality
• Contribute to training initiatives based on QC insights
• Provide structured feedback to improve agent performance
• Handle and review disputed evaluations, ensuring fairness and transparency
• Monitor dispute trends and recommend process improvements
• Work with QC and analytics tools; support implementation of automation and AI solutions
• Ensure data accuracy and effectiveness of quality control tools

WHAT WILL HELP YOU SUCCEED IN THE ROLE

• 1+ years of experience in Quality Control, QA, or Customer Support Quality in Igaming
• Strong understanding of QA processes, scorecards, and calibration
• Experience working with analytics, reporting, and QA tools
• Excellent attention to detail and analytical thinking
• Strong communication and feedback skills
• Ability to manage multiple priorities in a fast-paced environment

WHY YOU’LL LOVE IT HERE:

• Flexible working hours and a remote work setup, so you can plan work around your life and not your life around work!
• Unlimited vacation days and paid sick leave—because your rest matters.
• A competitive compensation that truly reflects your skills and expertise.
• Employee referral bonus and gifts to celebrate your special occasions.
• 50% financial support for learning expenses to supercharge your professional growth!
• A positive atmosphere where you always feel respected and truly belong.
• Inspirational team-building activities that turn colleagues into best friends.
• Wellness benefits: We’ll support your sports passions, from yoga classes to gym memberships.
• Co-working space reimbursement to save your nerves from always working from home :)

Executive & Lifestyle Assistant (Lisbon Area)

We are looking for a highly organized and proactive Executive & Lifestyle Assistant based in the Lisbon area to provide ongoing operational, personal, and lifestyle support.

This role combines responsibilities of a Personal Assistant, Executive Assistant, and Lifestyle Manager. The assistant will help manage calendars, meetings, follow-ups, partner relations, reminders, expenses, and various day-to-day tasks in Portugal.

Key responsibilities include:

• Calendar and schedule management
• Organizing meetings, calls, reminders, and follow-ups
• Maintaining structured information about partners and contacts
• Coordinating gifts, поздравления, and personal touches
• Handling lifestyle and household-related tasks in Portugal
• Communicating with local service providers and contractors
• Researching, comparing, and organizing solutions
• Tracking expenses, receipts, and reporting

Requirements:

• Based in Lisbon area (Lisbon, Cascais, Oeiras, Estoril, Sintra, etc.)
• Russian or Ukrainian speaker
• Previous experience as Executive Assistant / Personal Assistant / Lifestyle Assistant
• Fluent conversational Portuguese
• Strong organizational and communication skills
• Ability to work independently and solve problems proactively
• Attention to detail and confidentiality
• Willingness to sign NDA

Nice to have:

• English language
• Driver’s license and own car

Format:

• Long-term cooperation
• Around 30 hours/week with potential growth to full-time
• Regular availability and fast response time required

We are seeking a Head of Payments to lead and optimize our payment operations across multiple brands. The role involves managing teams, driving KPI performance, improving payment flows, and ensuring compliance and risk control. The ideal candidate brings strong analytical skills, experience with PSPs and partners, and the ability to work cross-functionally to deliver scalable and efficient payment solutions.

How you will make an impact
 

• Manage and scale teams of Payments specialists (B2C, B2B), including building teams from scratch and driving their development
• Oversee payment operations across 10+ independent brands simultaneously
• Define, track, and optimize key KPIs (deposit decline reasons, withdrawal SLAs) using a data-driven approach
• Analyze performance and run A/B tests to improve payment flows and routing strategies
• Design, implement, and adapt payment flows and SLAs based on customer segmentation (e.g., VIP vs casual players)
• Evaluate risks related to new launches, payment methods, and product changes, ensuring compliance and best practices
• Manage high-value (big winner) cases and influence balance outcomes strategically
• Collaborate cross-functionally with Product, Affiliate, Tech, and Operations teams to resolve payment-related issues
• Own and manage relationships with third-party providers (banks, PSPs, fraud and verification partners), including negotiations

What will help you succeed in this role
 

• 3+ years of experience in a similar senior role within iGaming (Gambling)
• Strong knowledge of gambling compliance (AML, CDD, EDD, KYC)
• Deep understanding of payment systems, providers, and the overall payments ecosystem
• Experience managing high-volume transaction environments (millions €/month)
• Experience with crypto payments

Why you’ll love it here
 

• Flexible working hours and a remote setup, plan your work around your life
• Unlimited vacation days and paid sick leave
• Competitive compensation aligned with your expertise
• Employee referral bonus and gifts for special occasions
• 50% coverage of learning expenses for your professional growth
• Supportive and respectful team environment
• Team-building activities that actually bring people together
• Wellness benefits (sports, gym, yoga, etc.)
• Co-working space reimbursement if you prefer not to work from home

We’re looking for experienced an Affiliate Manager to join our team! In this role, you’ll be at the heart of our partner program, building relationships and driving success for our affiliates and the company alike.

Are you ready to elevate your career in an innovative and dynamic environment that values growth and collaboration? If you’re eager to make an impact and develop your skills alongside a passionate team, we’d love to hear you! Join us, and let’s take your career to the next level together.

HOW YOU WILL MAKE AN IMPACT

• Develop and present tailored partnership proposals, effectively negotiating terms to build mutually beneficial agreements with new and existing affiliates.
• Guide and support partners through every stage of the partnership, ensuring a seamless experience and fostering strong, long-term relationships.
• Drive retention and motivation among existing partners by creating customized offers for different partner segments, and implementing a loyalty system for high-potential affiliates.
• Monitor and ensure the quality and compliance of affiliate-posted materials, upholding brand standards and message consistency.
• Analyze partner traffic to establish a comprehensive reporting system, leveraging insights to optimize strategy and drive improvements in key performance indicators (KPIs).
• Analyze key performance metrics (ROI, LTV, NGR, GGR, ARPU, ROAS, etc.) and implement strategies to improve their efficiency and overall profitability.
• Increase customer acquisition by driving higher traffic flow from partner sites to our products. Achieve and exceed KPIs related to acquiring new clients and partners, setting the bar for growth and performance.
• Use CRM tools to accurately track, maintain, and manage all partner contacts, ensuring up-to-date records and efficient communication.

WHAT WILL HELP YOU SUCCEED IN THE ROLE

• Minimum of 1,5 years of proven experience in affiliate marketing within the iGaming and Betting industry.
• Upper-intermediate or higher proficiency in English.
• Strong analytical skills to evaluate and optimize traffic funnels, identifying the most effective paths to conversion.
• Proficiency in creating clear and detailed technical tasks for developers and designers.
• Excellent organizational and time management abilities to handle multiple partners and projects effectively.
• Your soft skills, as well as negotiation skills, should be top-notch.
• You are available to travel and attend the conferences.

HOW WE WILL KEEP YOU SMILING

• Flexible working hours and a remote work setup, so you can plan work around your life and not your life around work!
• Unlimited vacation days and paid sick leave—because your rest matters.
• A competitive compensation that truly reflects your skills and expertise.
• Employee referral bonus and gifts to celebrate your special occasions.
• 50% financial support for learning expenses to supercharge your professional growth!
• A positive atmosphere where you always feel respected and truly belong.
• Inspirational team-building activities that turn colleagues into best friends.
• Wellness benefits: We’ll support your sports passions, from yoga classes to gym memberships.
• Co-working space reimbursement to save your nerves from always working from home :)

We are looking for a Senior DevOps Engineer to design, build, and operate scalable, highly available infrastructure on AWS. This role is primarily focused on AWS-native container platforms, while also requiring hands-on Kubernetes experience for hybrid workloads, tooling, and platform support.

Experience Level

• 5+ years of professional experience in DevOps, SRE, or cloud infrastructure roles
• 3+ years of hands-on experience operating production workloads on AWS

What You’ll Do

• Design and manage AWS infrastructure using Terraform
• Build and maintain CI/CD pipelines using Jenkins and GitHub Actions
• Deploy, operate, and scale containerized applications using AWS-native container services, including: 
  • Amazon ECS and ECS on Fargate
  • Amazon ECR
  • Application and Network Load Balancers
• Configure and tune autoscaling, high availability, and fault-tolerant architectures
• Work with Kubernetes environments, including cluster-level operations and local cluster setup for development
• Support and improve local developer build environments
• Ensure production systems are reliable, secure, and observable

What We’re Looking For

• Strong hands-on experience with AWS and Infrastructure as Code (Terraform)
• Production experience running containers on ECS and/or Fargate
• Hands-on experience with Kubernetes, including working with clusters in production or development environments
• Solid understanding of autoscaling, redundancy, and resilient system design
• CI/CD expertise with Jenkins and GitHub Actions
• Strong Linux, networking, and troubleshooting skills

Nice to Have

• Experience operating EKS or hybrid ECS/Kubernetes environments
• GitOps or deployment automation experience
• Familiarity with AWS observability and cost-optimization tooling
• AWS certifications

Growth Automation is a leading Lead Generation AI Service Provider serving B2B clients worldwide. We develop our own systems that scale our clients.

We are building a team of A-players to join us on the journey to make an impact in the B2B business world.

That’s why we’re looking for an Account Manager to join our team.

The role of an Account Manager is to fulfill Outbound Marketing Services for our B2B clients to help them generate leads and grow their sales pipeline – as well as ensure seamless communication and strategic alignment between our clients and our internal team.

Account Managers act as strategic Lead Generation Specialists for our clients – creating outbound marketing campaigns across email and LinkedIn, managing client and internal communication, and delivering exceptional results that align with each client's business objectives.

We are currently in search of a proactive, results-driven individual who's looking for the opportunity to work with a range of clients and business verticals with our strong team, while utilizing the most advanced Lead Generation strategies and tech available. 

As an Account Manager, your responsibilities include:
 

• Onboarding new Clients
• Client Relationship Management & Client Communication - building a well working relationship with the client is the most important part of the work.
• Liaison with our Audience specialist to create targeted lead lists using our range of tools.
• Liaison with our LinkedIn specialist to produce strong results with LinkedIn Outreach
• Create scripts for outbound campaigns across email and LinkedIn with our proprietary tools.
• Liaison with our team to keep client projects on schedule and moving forward. 
• Tracking and monitoring outbound campaign performance and delivery.
• Internal Team Coordination with the Fulfillment Team.
• Problem Solving & Support
• Client Retention & Upsell Opportunities

In this role, you have the opportunity to make an immediate impact on the success, trajectory, and growth of the business, while simultaneously taking your own personal, professional, and financial growth to the next level.

Requirements

These are skills and experiences that would make you a strong candidate for this position:
 

• Experience in running B2B Cold Email Marketing Campaigns.
• Experience in running B2B LinkedIn Outreach Campaigns.
• Experience writing copy that converts cold traffic into warm traffic (lead generation)
• Experience in a B2B Sales / Marketing / Business Development.
• Experience using AI tools.
• Experience consulting other B2B SaaS or B2B Service businesses.
• Experience using tools like Instantly, SmartLead, and EmailBison for cold email.
• Experience using AI tools or developing AI automations

Here are Additional Attributes we are looking for:

• Proactive Attitude
• High Emotional Intelligence
• Strong Time Management
• Tech-Savvy
• Attention to Detail
• Strong Work Ethic
• Honest and Trustworthy
• Generous and Caring

Hours (flexible):

• Full-time, Monday through Friday with flexibility on working hours.
• You have the opportunity to create your own schedule with flexibility on working hours and location. 

On-Track Earnings:

• Performance-based compensation — no flat salary cap. Your earnings scale directly with the book you manage and retain.
• Management base: a fixed monthly fee per active client based on plan size — $45 (Starter), $90 (Growth), $150 (Pro).
• Renewal bonus: 4% of each client's monthly invoice, paid every month they stay active.
• Onboarding fees: one-time payment per new client you set up ($60 Starter, $100 Growth/Pro).
• On-Track Earnings of ~$1,800–$3,200+/month, with earnings continuing to climb past target as your book grows (e.g. ~$4,950/mo at 30 clients, ~$6,600/mo at 40). No cap.

Benefits

• Remote working
• Respectful work environment
• Education, training, and skill development
• The opportunity for career growth in a fast-growing business

We create solutions that put the client at the center of marketing. Marketing activities begin with an understanding of the client's needs and behavior, not with a product or campaign.

The platform brings together three key components:

rich historical, real, and forecast customer data, AI-controlled orchestration of the client's multi-channel paths, and statistically reliable assessment of the impact of each marketing action.

This allows you to create personalized, efficient, and measurable marketing that is truly customer-oriented.

Enterprise Customer Success Manager (CSM) plays a critical role in building strong, long-term relationships with our enterprise clients. As the trusted advisor and main point of contact for senior stakeholders, you’ll ensure that our customers realize maximum value from our platform while driving measurable impact for their business.
This is a highly strategic and consultative role that requires strong business acumen, excellent communication skills, and proven experience working with senior executives in large, complex organizations. 

Our Enterprise CSMs are natural leaders who combine analytical depth with customer empathy, helping clients succeed through thoughtful guidance, structured planning, and proactive engagement.

Responsibilities:

• Own the customer relationship – serve as the primary point of contact and strategic advisor for enterprise accounts.
• Drive value realization – ensure clients are maximizing adoption of our platform and achieving measurable ROI.
• Executive engagement – build trusted relationships with senior stakeholders, delivering insights and recommendations at an executive level.
• Customer advocacy – represent the voice of the customer internally, collaborating with Product, R&D, and other teams to drive improvements.
• Strategic planning – lead quarterly business reviews, success planning sessions, and ongoing enablement initiatives.
• Crisis management & resolution – anticipate risks, troubleshoot issues, and ensure timely resolution with professionalism.

• Thought leadership – educate clients on best practices, new capabilities, and industry trends to continuously elevate their marketing maturity.

   

Requirements:

• Bachelor’s degree required; advanced degree a plus.
• 2+ years of experience in customer-facing roles (Customer Success, Account Management, or Consulting) in a B2B SaaS environment.
• Proven track record of managing enterprise accounts and engaging directly with senior executives (VP, C-level).
• Exceptional presentation, facilitation, and communication skills in English.
• Strong analytical and problem-solving abilities, with the ability to translate complex data into actionable insights.
• Highly proactive, structured, and organized, with the ability to manage multiple priorities.
• Collaborative mindset and excellent interpersonal skills.
• Growth-oriented, curious, and comfortable driving change in dynamic environments.

What we offer:

• 100% remote from Ukraine;
• 20 working days’ vacation; 
• 10 paid sick leaves;
• public holidays;
• equipment;
• accountant helps with documents;
• many cool team activities.

Dataforest is looking for an experienced Delivery Manager to lead and coordinate software development projects for international clients. In this role, you will manage delivery processes, align cross-functional teams, ensure project success, and maintain strong client communication in a fast-paced outsourcing environment.

Requirements:
- 4+ years of experience as a technical leader or project manager.
- Strong leadership and organizational skills with the ability to effectively manage a team.
- Experience working with project budgets and understanding financial metrics.
- Deep understanding of the project delivery process.
- Understanding of Python, API, and SQL (optional).
- Possession of project management tools.
- Experience in account management and building long-term relationships with clients.
- English language - Advanced or Fluent level.

Responsibilities:
- Manage and coordinate project teams, including PMs, developers, and resource functions.
- Ensure timely and high-quality delivery of ІТ projects.
- Maintain and develop long-term relationships with clients, striving to increase their satisfaction.
- Manage project budgets and ensure the achievement of set financial indicators.
- Oversee all aspects of project execution—from planning to delivery.
- Participate in identifying client needs and generating additional business opportunities.

We offer:
- Working in a fast growing company;
- Great networking opportunities with international clients, challenging tasks;
- Personal and professional development opportunities;
- Competitive salary fixed in USD;
- Paid vacation and sick leaves;
- Flexible work schedule;
- Friendly working environment with minimal hierarchy;
- Team building activities, corporate events.

Dataforest is looking for a Data Scientist to join an interesting software development project in the field of Cybersecurity. Our client's platform offers Identity Insights drives real-time, multi-contextual digital forensics to protect new account opening workflows and expose fake accounts already in a customer database.

    Required Qualifications

• 2+ years of experience working with large-scale, complex datasets.
• Experience with imbalanced data.
• High proficiency in Python for data analysis, feature engineering and modeling.
• Expertise in exploratory data analysis and preparing clean, structured datasets for model development.
• Hands-on experience with AI/ML techniques:
• Supervised (eg. gradient boosting, decision trees, etc.)
• Unsupervised (eg. anomaly detection, clustering, etc.)
• Familiarity with basic statistical concepts and model evaluation metrics (eg. precision, recall, ROC-AUC).
• Upper-intermediate (B2) or higher level of English.
  
  Nice to Have
• Hands-on experience in the fraud/risk domain.
• Experience with Databricks (including Pyspark) for data processing, experimentation, and model development.
• Experience in MLflow library for experiment tracking and model lifecycle management.
• Experience working with diverse data sources (e.g., behavioral, device, or transactional data) and deriving meaningful features.
• Experience assessing data quality and validating new data sources in production environments.

     Key Responsibilities

• Analyze large-scale transaction datasets to identify fraud patterns and risk signals.
• Develop and validate ML models for risk scoring and fraud detection/classification.
• Support deployment of models into production environments by collaborating with the development team.
• Monitor model performance, conduct regular evaluations, analyze the results.
• Perform feature engineering to continuously improve model performance.
• Collaborate with the client on R&D efforts, including exploratory data analysis, feature development, and testing new approaches.

     We offer

• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Team building activities and corporate events.

Dataforest is looking for a Data Engineer to join an interesting software development project in the field of Cybersecurity. Our client’s platform offers Identity Insights drives real-time, multi-contextual digital forensics to protect new account opening workflows and expose fake accounts already in a customer database.

Requirements:
• 3+ years of hands-on experience in data engineering;
• 3+ years of commercial experience with Python;
• Advanced experience with SQL DBs (optimisations, monitoring, etc.);
• Advanced experience with PySpark;
• Solid understanding of ETL principles (architecture/ monitoring/ alerting/search and resolve bottlenecks);
• Familiar with AWS infrastructure (boto3, S3 buckets, etc);
• Experience working with large volumes of data;
• Understanding the principles of medallion architecture.

Responsibilities:
• Maintain data processing architecture using Python and PySpark that interacts with ScyllaDB & PostgreSQL.
• Work with Databricks infrastructure to ensure reliability, scalability, and cost efficiency.
• Proactively identify bottlenecks and suggest technical improvements.

Nice to have:

• Cassandra/Scylla

• PostgreSQL

• Pandas

• Experience with Kafka and Redis

We offer:

• Great networking opportunities with international clients, challenging tasks;

• Building interesting projects from scratch using new technologies;

• Personal and professional development opportunities;

• Competitive salary fixed in USD;

• Paid vacation and sick leaves;

• Flexible work schedule;

• Friendly working environment with minimal hierarchy;

• Team building activities, corporate events.

We are looking for a visionary and hands-on Senior Backend Developer / Tech Lead to drive the technical evolution of our high-performance microservices ecosystem at Dataforest. If you are passionate about building scalable, high-load systems, defining architectural patterns, and guiding a talented engineering team in a healthy, flexible working environment — we want you on board!

    Technical Requirements:

• 4+ years of commercial experience in backend development using Python;
• Proven track record of designing and scaling high-load (Highload) applications and distributed systems;
• Deep expertise in FastAPI (advanced async patterns, dependency injection, architecture optimization, Pydantic v2);
• Extensive hands-on experience with GraphQL in production (advanced schema design, federation/subgraphs, N+1 problem resolution, resolver optimization);
• Strong mastery of asynchronous programming in Python (asyncio, advanced concurrency models);
• Production experience with AWS infrastructure;
• Advanced knowledge of SQL  databases, mastering query optimization, indexing strategies, and database sharding/replication (e.g., PostgreSQL + SQLAlchemy/Tortoise);
• Deep understanding of microservices patterns (Event-Driven Architecture, CQRS, Saga pattern, API Gateways, Service Mesh).
   

     Optional skills (as a plus):

• Experience with specialized GraphQL tools like Strawberry, Ariadne, or Apollo Router/Federation;
• Advanced usage of Redis (caching strategies, pub/sub);
• Experience with message brokers and task queues (Kafka, RabbitMQ, Celery) under heavy loads.
• Experience with third party integrations (payments, iGaming platforms, CRM and similar).
   

    Key Responsibilities:

• Architecture & Leadership: Design, build, and maintain scalable backend architectures using FastAPI and GraphQL; establish best practices, code standards, and technical roadmaps;
• High-Load Optimization: Solve complex scalability challenges, optimize system performance, eliminate bottlenecks, and ensure low-latency data delivery;
• Microservices & Infrastructure: Own the integration and evolution of a highly distributed microservices mesh built on AWS;
• Mentorship & Code Quality: Lead technical discussions, conduct rigorous code reviews, and mentor Middle/Junior developers, fostering a culture of engineering excellence;

• Cross-functional Collaboration: Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders to design robust data-retrieval and processing APIs.
   

  We offer:

• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Team building activities, corporate events.