Jobs at Djinni

We are looking for an experienced Sales Manager to lead and grow our cybersecurity services direction. This role requires a strong combination of sales expertise and solid cybersecurity domain knowledge to effectively position, sell, and expand our security offerings across target markets.

You will be responsible for driving new business, shaping go-to-market strategy, and working closely with delivery and technical teams to convert complex opportunities into long-term client partnerships.

Key Responsibilities

• Own the final sales cycle for cybersecurity services - closing and account expansion
• Drive new business development across target industries (e.g., SaaS, FinTech, HealthTech, Enterprise)
• Identify, qualify, and pursue high-value opportunities in cybersecurity (application security, cloud security, DevSecOps, compliance, etc.)
• Lead client conversations at C-level (CISO, CTO, CIO) and position strategic value beyond pure delivery
• Build and manage a strong pipeline of qualified opportunities with predictable revenue outcomes
• Contribute to cybersecurity go-to-market strategy, messaging, and offerings development
• Support RFP/RFI responses, proposals, and commercial negotiations
• Collaborate with delivery, pre-sales, and marketing teams to ensure alignment and successful deal execution
• Track market trends, competitor positioning, and emerging cybersecurity demands

RequirementsSales & Commercial Experience

• 2+ years in B2B sales within IT services, consulting, or cybersecurity
• Proven track record of closing mid-to-large deals
• Experience managing complex, multi-stakeholder sales cycles
• Strong negotiation and commercial structuring skills (T&M, fixed price, retainers, etc.)

Cybersecurity Domain Knowledge (Critical)

• Solid understanding of cybersecurity domains such as:
  • Application Security (SAST, DAST, secure SDLC)
  • Cloud Security (AWS/Azure/GCP security, IAM, posture management)
  • DevSecOps practices
  • Security assessments, audits, and compliance (SOC 2, ISO 27001, GDPR, HIPAA)
• Ability to confidently communicate with technical and security stakeholders
• Experience selling cybersecurity services or solutions is strongly preferred

Other

• Strong business acumen and ability to connect technical solutions with business outcomes
• Excellent communication and presentation skills
• Self-driven, proactive, and comfortable operating in a fast-paced environment

Nice to Have

• Existing network of security leaders (CISOs, Heads of Security)
• Experience in regulated industries (FinTech, HealthTech, Enterprise SaaS)
• Familiarity with security tools/vendors ecosystem
• Background in technical roles (e.g., engineering, security, DevOps)

What Success Looks Like

• Consistent pipeline of qualified cybersecurity opportunities
• Closed deals with strong margins and long-term growth potential
• Expansion of the cybersecurity service line within existing and new accounts
• Strong positioning of the company as a trusted cybersecurity partner

Why Join Us

• Opportunity to shape and scale a cybersecurity direction within a growing company
• Work with experienced delivery and consulting teams
• Direct impact on strategy, offerings, and revenue growth
• Flexible, fast-moving environment with high ownership

Admiral Studios is an IT outsourcing company specializing in product development, MVPs, AI solutions, and web app development, as well as mobile development, UI/UX, and SEO. We use the latest and most advanced technologies: Node.js, React, Laravel, Shopify, Python, and WordPress. We work with clients in Europe, the US, the UK, and Canada 🌍.

Currently, our team consists of more than 60+ skilled experts 👨‍💻, and we are constantly growing.

Now, we’re looking for an Account Manager ⭐️ to strengthen our team and ensure long-term success with our growing number of clients. If you’re passionate about building relationships, proactive in solving challenges, and eager to deliver high-level client service — this is your opportunity.
As a part of our client success team, you’ll get support in your professional development and the chance to work with international projects.

For a perfect match, we expect 🎯

• 1+ years of experience as an Account Manager in an IT outsourcing company
• Strong communication and negotiation skills
• Experience working with US/European clients
• Experience in contract management, pricing, and invoicing
• Understanding of web development, SEO, and UI/UX design processes
• Proficiency in CRM tools (HubSpot, Asana, or similar)
• Project management and coordination skills
• High level of responsibility and organizational skills
• English level: B2 or higher

Nice to have 💎

• Basic technical knowledge
• Experience working in startups or digital agencies

Duties & Responsibilities 💼

• Build and maintain strong relationships with clients (startups, SMBs)
• Work closely with Sales and Delivery teams
• Negotiate contracts, rate increases, and pricing to maximize revenue and client retention
• Participate in client meetings, provide project updates, and resolve issues proactively
• Upsell / cross-sell by identifying client needs and offering additional services
• Prepare invoices, reports, and financial performance tracking
• Ensure smooth communication between clients and internal teams

Why Join Admiral Studios?

⭐️Growth-Oriented Environment — value efficiency, flexibility, and results.

🤝Team Spirit — Regular corporate online & offline events to keep the team connected
📚Professional Development Support — we provide:

• A structured Performance Review system.
• Access to an internal knowledge library.
• Career growth opportunities with a clear development plan.
• A budget for improving work processes and implementing new ideas.

🧘Work-Life Balance — Enjoy a flexible work schedule and a fully remote work model.
✅Paid Time Off — 20 vacation days + 10 sick leave days per year.

Hiring steps:
Screening — Test Task — Tech Interview — СEО Interview — Job Offer

If your experience and skills match our candidate scorecard, the recruiting team will contact you within 5 business days 💙
 

Don’t forget to provide your Telegram nickname for contact!

We’re looking for a Marketing Manager with hands-on experience in managing performance campaigns and direct communication with clients.

Requirements:

• 1,5-3 years of proven experience in digital marketing, preferably in performance or growth-oriented roles.
• Strong hands-on experience with Google Ads (Search, Display, Remarketing) and Meta Ads (Facebook, Instagram).
• Solid understanding of conversion tracking, event setup, and analytics via GA4 + Google Tag Manager.
• Knowledge of SEO fundamentals (technical and content-related).
• Experience with CRM systems (Active Collab, HubSpot, or similar).
• Strong analytical and problem-solving skills.
• Excellent English communication skills (B2 level or higher).
• Ability to manage multiple campaigns simultaneously and meet deadlines.
• Proactive, data-driven, and results-oriented approach.

Responsibilities:

• Plan and execute digital marketing campaigns across Google Ads, Meta Ads, SEO, and email marketing.
• Launch, monitor, and optimize paid advertising campaigns with a focus on performance, ROI, and conversions.
• Manage multiple campaigns simultaneously, ensuring timely delivery and quality execution.
• Serve as the main point of contact for clients: handle communication, approvals, reporting, and feedback.
• Set up and maintain tracking in Google Tag Manager, including event tracking and GA4 integration.
• Analyze campaign and website performance data and turn insights into optimization actions.
• Collaborate with designers, copywriters, SEO specialists, and developers to produce effective marketing assets and campaigns.
• Ensure smooth cross-functional execution of marketing projects from planning to delivery.

What We Offer:

- A work culture built on mutual success, trust, and continuous growth;

- Competitive compensation with clearly scheduled salary reviews and raises;

- A high-performing project management team and an inspiring atmosphere of camaraderie;

- The opportunity to lead a talented team of top-tier developers and designers;

- Sports compensation to help you stay active and energized;

- Paid vacation and sick leave — because your well-being matters;

- Comprehensive health insurance coverage;

- A modern, comfortable office in the center of Lviv;

- An amazing team, warm atmosphere, and engaging 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.

Who We Are

At Bennett Data Science, we've been pioneering the use of predictive analytics and data science for over a decade for some of the biggest brands and retailers. We're at the top of our field because we focus on delivering actionable AI for our clients. Our deep experience and product-first attitude set us apart from other groups and gets us the business results our clients want.

Why You Should Work With Us

You'll be exposed to a wide range of clients who are at the cutting edge of innovation in their field and get to work on fascinating problems, supporting real products, with real data. We help lots of companies, from some of the largest companies in the world to small startups in Silicon Valley who are building the next big thing.

Expert Mentorship: Direct guidance from senior staff with 20+ years of applied ML experience

Competitive Compensation: Market-rate pay with performance upside

Fully Remote: Work from any location of your choice, on a flexible schedule

Real Impact: Your models go into production and serve real users

The Role:

As a Senior Data Scientist, you will design, build, and deploy RAG systems and other AI solutions that help teams manage land, infrastructure, and stakeholder relationships more effectively. You'll work with large volumes of documents, permits, geospatial records, and stakeholder communications, turning unstructured and semi-structured data into reliable, queryable intelligence.

You'll own projects end-to-end: scoping the problem with internal and client-facing stakeholders, selecting retrieval and generation strategies, building and evaluating pipelines, and iterating on production systems alongside senior data engineers. You'll also contribute to the team's broader ML work: classification, extraction, geospatial modeling, and mentor junior team members as the practice grows.

This is a hands-on, senior individual contributor role. You'll need to be as comfortable explaining tradeoffs to a non-technical project manager as you are tuning a reranker or debugging retrieval recall. Client-facing communication is part of the job.

Requirements

A successful candidate has 5+ years of experience in applied data science and machine learning, with deep hands-on expertise in retrieval-augmented generation and a strong statistical foundation. They demonstrate the following:

RAG & Generative AI (Core Focus)

• Proven experience designing, building, and deploying RAG-based systems in production, including chunking strategies, embedding model selection, retrieval tuning, and reranking
• Strong understanding of hallucination mitigation techniques (grounding, citation enforcement, context window management, guardrails) and the ability to articulate tradeoffs across architectures
• Experience evaluating RAG pipeline quality end-to-end: retrieval recall, answer faithfulness, latency, and cost
• Familiarity with vector databases and hybrid search (e.g., Databricks, Pinecone, pgvector, or OpenSearch)

Applied ML & Engineering

• Production ML experience: building, deploying, and maintaining models that serve real users at scale
• Strong Python skills including scikit-learn, pandas, NumPy, and at least one deep learning framework (PyTorch or TensorFlow)
• Solid statistical foundation: hypothesis testing, distributions, probability, experimental design

Communication & Working Style

• Experience translating model behavior, recommendations, and limitations for non-technical stakeholders, particularly in domains where trust and accuracy are critical
• Comfort working independently across multiple projects simultaneously
• English proficiency at B2 or above (written and spoken)

Nice to Have

• Experience applying LLMs or transformer-based NLP for structured text classification, information extraction, or embedding-based retrieval
• Geospatial feature engineering, location-based statistics, spatial indexing, or proximity scoring, particularly in land, infrastructure, or utility corridor contexts
• Experience with Vision-Language Models (VLMs) or satellite/aerial imagery analysis for document or land parcel interpretation
• Experience with cloud ML platforms (AWS SageMaker, GCP Vertex AI)
• Exposure to utilities, energy, infrastructure, land management, or enterprise SaaS domains
• Experience fine-tuning or adapting pre-trained models (LoRA, PEFT, or full fine-tune)
• Experience with agentic architectures and deployments

Responsibilities

• Design, develop, and maintain modern web applications using Node.js and Angular.
• Build robust RESTful APIs and backend services.
• Develop responsive, high-performance frontend interfaces.
• Participate in architecture and technical design discussions.
• Integrate third-party APIs and external systems.
• Write clean, maintainable, and well-tested code.
• Conduct code reviews and mentor other team members.
• Collaborate with Product Managers, QA engineers, and DevOps specialists.
• Troubleshoot and resolve performance and production issues.
   

Requirements

• 5+ years of commercial software development experience.
• Strong expertise with Node.js and Angular.
• Proficiency in TypeScript and JavaScript.
• Experience with Express.js or NestJS.
• Strong understanding of REST APIs and microservices architecture.
• Experience with state management in Angular (NgRx is a plus).
• Knowledge of HTML5, CSS3, SCSS, and responsive design principles.
• Experience with relational and/or NoSQL databases such as PostgreSQL, MongoDB, or MySQL.
• Familiarity with Docker.
• Experience with CI/CD pipelines.
• Proficiency with Git.
• Upper-Intermediate English level or higher.

Product Engineer

AI-Enabled Products · Full-Stack · End-to-End Ownership
 Fully Remote (Europe preferred)
 Independent Contractor · 50–70% initially (ramping to full-time within 6–12 months)
 Reports to Founder & CEO

You’re Not a Cog. You’re the Engine.

Most engineering roles give you a ticket queue. This one gives you a product.

At Informed Decisions, you’ll take real ownership over how a meaningful B2B SaaS platform gets built- from architectural decisions to AI integrations to what ships on Friday. You’ll work directly with the founder, with real influence over technical direction, and you’ll see the impact of your work in how organizations hire and how people’s careers unfold.

If you’ve been waiting for a role where your judgment actually matters, this is it.

What We’re Building

Hiring is broken in ways most companies don’t even measure. Informed Decisions addresses this by combining IO psychology with data-driven product design- including statistical models, analytics, and AI-enabled capabilities- to make interviews fairer, more consistent, and truly predictive of on-the-job success.

We help organizations improve interviewer skills, reduce bias, and connect hiring decisions to real post-hire outcomes. The product is live, the problem is real, and the work is technically interesting.

What You’ll Own

This is a full-stack product engineering role. You’ll work across the system with .NET and Python on the backend, APIs and integrations, AWS infrastructure, and AI-enabled workflows embedded into real product features.

Your first major responsibility is taking full ownership of a live, production product- from database and backend services through APIs and application layers- currently developed with an external vendor. This includes deeply understanding what’s been built, identifying what needs to evolve, and establishing the engineering practices and standards that will carry the platform forward.

This is an active system with real users, real data, and real consequences. We’re looking for someone who can navigate this transition with technical rigor, sound judgment, and a strong sense of ownership.

On the product side, you’ll design and ship features end to end. That means writing the code, making architectural calls, defining what “done” looks like, and owning production quality.

On the AI side, you’ll build workflows that integrate LLMs and AI services into the product in ways that are reliable, observable, and grounded in measurable hiring outcomes.

Beyond the core platform, you’ll make judgment calls about when a customer need belongs inside the platform and when a standalone tool or application is the right answer- and then you’ll build it.

Engagement Model

This role starts as an independent contractor engagement, scoped at approximately 50–70% capacity.

The intent is to increase scope and ownership over time, with a planned ramp toward full-time (100%) involvement within 6–12 months, based on mutual fit, impact, and company needs.

You’ll Thrive Here If…

• You’ve shipped production systems and can show your work through code, products, or a real portfolio
  
   
• You’re comfortable owning decisions when there’s no one to escalate to
  
   
• You’ve worked with .NET and Python in real production environments
  
   
• You’ve integrated AI or LLM services into live products, not just prototypes
  
   
• Remote-first work suits how you operate- you create structure rather than relying on it
  
   
• Your English is fluent (spoken, written, and reading), strong enough to communicate technical decisions clearly across time zones
  
   

Experience with early-stage SaaS, third-party integrations, and complex systems is a strong advantage. The tradeoffs are real, and the work reflects that.

Why This Role, Why Now

• Direct line to the founder, with real influence on product direction
  
   
• Work tied to measurable outcomes: fairer hiring and better decisions
  
   
• A remote environment built on trust, not surveillance
  
   
• High ownership from day one across a technically deep and socially meaningful problem
  
   

How We Evaluate

We don’t screen on credentials. We evaluate based on what you’ve built and how you think. Come ready to show your work.

Informed Decisions is fully remote and welcomes contractor applications from across Europe.

Who We Are

PAR Retail, with its Open Commerce® product suite and patent pending Wallet Steering® System, empowers Convenience & Fuel Retailers to gain more share of wallet and customer lifetime value than possible with any other solution provider. PAR Retail’s unified Open Commerce product suite consists of: Activate for Intelligent 1:1 Loyalty, Transact for Contactless Commerce, and Experience for Cross-Channel Customer Experiences. PAR Retail’s solutions are supported by a set of subscription-based program management services and are contractually backed by its 1.5X Performance Guarantee.

Technology stack:

OS and Android apps, React native, Node.js, TypeScript, Playwright, Charles, Fiddler, TestRail, Jira.

Requirements:

- 5+ years of experience in web and mobile apps testing;

- Backend testing experience: API, Database (SQL), 3rd party services integration, analytics;

- Experience in automation or desire to evolve as general QA;

- Solid understanding of client-server architecture;

- Test documentation creation: сheck lists, test cases, test-reports, etc;

- Experience with bug-tracking systems like Jira;

- Knowledge of QA tools: Chrome Developer Tools, Charles, Postman etc.;

- English — upper-intermediate level;

- Experience with Scrum processes.

Responsibilities:

- Requirements analysis and testing;

- BE and mobile clients testing;

- Bug-reporting and working with bug-tracking systems;

- Communication with development and project management teams;

- Prepare and support internal documentation for project.

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Health insurance program;

- Flexible working hours;

- Sponsored company educational program, corporate library;

- Funny celebrations, team outings, and company events;

- A unique and friendly environment where everyone can explore and learn new technologies.

About the Role

We are a fast-growing, internationally-focused fintech company delivering cutting-edge crypto processing and payment solutions. As we expand our global footprint, we are looking for a driven, results-oriented B2B Sales Manager to join our team.

In this role, you will drive the entire sales cycle—from sourcing high-value outbound leads to closing deals with international B2B clients. You will act as the face of our product, helping businesses seamlessly integrate modern payment infrastructure.

Your Key Responsibilities

• Pipeline Management: Source and qualify inbound (warm/hot) leads, while aggressively driving outbound lead generation via LinkedIn, email, and direct outreach.
• Product Demonstrations: Conduct high-impact product presentations and live demos for prospective B2B clients.
• Deal Closing: Prepare tailored commercial proposals, handle objections, and navigate deals through to closing and client onboarding.
• Cross-Functional Collaboration: Partner closely with internal Legal, Compliance, and Tech teams to ensure smooth onboarding and compliance with industry standards.
• CRM & Reporting: Maintain flawless data hygiene in our CRM, tracking sales metrics and forecasting pipeline growth.

What We Are Looking For

• Experience: 2–3 years or more of proven success in B2B sales, specifically in the FinTech sector—MANDATORY—as well as in cryptocurrencies, payment processing, SaaS, or high-risk sectors.
• Sales Acumen: A deep understanding of sales funnels, modern closing techniques, and a proven track record of handling complex objections.
• Communication: Exceptional verbal and written communication skills with the ability to build rapport quickly.
• Language Skills: English proficiency at an Upper-Intermediate (B2) level or higher (comfortable conducting business correspondence and basic negotiations).
• Soft Skills: High self-organization, accountability, resilience, and a sharp focus on hitting KPIs.

Great-to-Haves (Bonus Points)

• Direct experience selling in crypto/payment processing or working with high-risk verticals (iGaming, Forex, Web3).
• Experience managing international clients across various jurisdictions.
• Strong negotiation skills at the C-level (negotiating with CEOs, COOs, and Heads of Payments).

What We Offer

• Uncapped Earning Potential: A solid base salary coupled with a transparent, performance-driven bonus structure with no ceiling.
• Flexibility: hybrid or in-office work arrangement at the office in Kyiv or Warsaw.
• Global Impact: The opportunity to work with international markets and cutting-edge Web3/FinTech products.
• Career Growth: A clear pathway to advance into a Senior Sales or Head of Sales role as the company scales.

Summary
We’re looking for a hands-on Lead Developer to help build and evolve our next-generation website builder and CMS platform. This role is ideal for someone who enjoys owning complex systems, writing production code, and helping shape technical direction alongside Product and TPM partners.

This is a 60/40 hands-on leadership role — you’ll be building critical features while also guiding design decisions and reviewing work across the team.

This role requires at least 10 years of hands-on experience as a developer, writing code in PHP & Laravel, as well as Team/Tech Lead experience. 

Responsibilities

• Lead development of core platform features across backend and frontend
• Write and review production code (Laravel, PostgreSQL, Angular/TS)
• Own database design and data integrity in a multi-tenant SaaS
• Partner with Product and TPMs to translate requirements into technical solutions
• Debug complex, cross-system issues involving editor state, persistence, and rendering
• Establish and maintain coding standards and architectural patterns
   

Requirements

• Strong backend development experience
• Deep understanding of database design (PostgreSQL preferred)
• Experience working on multi-tenant SaaS systems
• Comfortable working across the stack
• Solid debugging and problem-solving skills
   

Nice to Have

• Experience with CMSs or visual editors
• Familiarity with Angular, React, or similar frameworks
• Experience modernizing or replacing legacy systems

Other

• Fully remote, contract position (full-time, long-term)
• Adequate management, flexible schedule (4 hours overlap with EST time zone required, other hours at your convenience). 
• Steps in the hiring process:

1. Resume review + Intro call;
2. CodeSignal test;
3. Three tech interviews before an offer is extended

This is a 0→1 product role where you combine architecture, hands-on

development, and technical leadership.

You will take an early-stage concept and turn it into a working, scalable system — defining architecture, making key technical decisions, and driving delivery.
We’re looking for someone who can own the system end-to-end, operate in ambiguity, and build solutions that work in production, not just on paper.

Responsibilities
• Design and own system architecture for a new product.
• Build and structure backend services using Golang.
• Define APIs, integrations, and event-driven workflows.
• Break down architecture into delivery roadmap (phases, risks, dependencies).
• Make decisions on scalability, performance, and reliability.
• Stay hands-on in development when needed.
• Collaborate with product and stakeholders on technical execution.
• Participate in hiring and mentoring engineers.

Requirements
• 7+ years in backend engineering / technical leadership.
• Strong hands-on experience with Golang.
• Experience as Technical Lead / Principal Engineer.
• Strong background in distributed systems and microservices.
• Experience with APIs, queues, and event-driven architecture.
• Experience building B2B SaaS or platform products.
• Strong understanding of scalability, observability, and system reliability.
• Ability to drive delivery in fast-moving, ambiguous environments.

Would Be a Plus
• Experience in gambling, sportsbook, or retention systems.
• Experience with real-time systems and event processing.
• Experience working with data-heavy or ML-related products.
• Experience building systems from scratch (0→1).
• Experience designing internal tools, admin panels, or control systems.

What We Offer
• Full ownership of a new product’s technical direction.
• High impact on architecture, product, and engineering decisions.
• Opportunity to build systems from the ground up.
• Flexible remote work format.
• Competitive compensation aligned with seniority and impact.

Position Overview

As a Game Mathematician, you will own the mathematical design of our gaming systems — from core probability models to long-term behavioral dynamics of the game.

You will shape RTP, volatility curves, hit frequency, payout distributions, risk balance, and overall economic sustainability of each title.

This role requires deep theoretical knowledge, practical simulation skills, and the ability to collaborate closely with producers, designers, engineers, and compliance teams.

Responsibilities

• Develop and maintain detailed mathematical models for Slots, Crash Games, and Fast Games.

• Design and balance RTP, volatility, hit frequency, paytables, game curves.

• Model stochastic processes and RNG logic, ensuring correctness and predictability.

• Calculate probabilities and payout distributions across long-run simulations.

• Conduct large-scale simulations and statistical analysis of game behavior.

• Balance risk, retention, and economic KPIs of the product.

• Collaborate with producers to create optimal player experience.

• Work closely with engineers to validate correct technical implementation.

• Contribute to game logic design and innovative mechanics.

• Conduct competitive analysis of game mathematics and market trends.

• Participate in playtests and analyze real in-game behavior post-launch.

• Prepare complete mathematical documentation for certification and regulators.

Requirements

• Strong knowledge of probability theory, combinatorics, and mathematical statistics.

• Experience in slot or gambling game mathematics (3+ years).

• Practical experience designing and balancing RTP, volatility, and payout structures.

• Experience with stochastic modeling and simulations.

• Programming skills (Python, R, C++, MATLAB, or similar).

• Ability to clearly communicate mathematical decisions to cross-functional teams.

• English — Intermediate or higher.

Would Be a Plus

• Experience with crash or fast game mechanics.

• Experience with competitive math research.

• Understanding of player behavior and retention impact.

• Experience interacting with certification bodies and regulators.

What We Offer

• Direct influence on product economics and player experience.

• Real ownership of game mathematics and long-term performance.

• Competitive compensation.

• Professional growth inside a product-driven gambling studio.

• Flexible working format.

• Strong, collaborative team environment.

Required:

Senior Java Backend Engineer, English B2+

Full-time, EU working hours

Location: EU / Ukraine

Duration: Long-term (9+ month)

Responsibilities

Design and develop scalable backend services and microservices in Java/Spring Boot

Build and maintain blockchain integrations across multiple networks (Bitcoin, Ethereum, Solana, TRON)

Develop and support custodial wallet systems

Ensure reliability, security, and performance of blockchain-related infrastructure

Collaborate with cross-functional teams on architecture and technical decisions

Participate in code reviews and knowledge sharing

Requirements (Must-have)

Strong hands-on experience with Java and Spring Boot

Proven experience building microservices architectures

Hands-on experience with blockchain integrations (Bitcoin, Ethereum, Solana, TRON)

Experience with custodial wallet systems

English B2+

Nice to Have

Experience with additional blockchain protocols or Web3 ecosystems

Familiarity with security best practices in crypto/fintech environments

Tech Stack

Java, Spring Boot, Microservices, Bitcoin, Ethereum, Solana, TRON, Custodial Wallet Systems

Hiring Process

Intro call

Technical discussion

Offer

Start: ASAP

Overview 

Come join us as we scale our retail and commerce loyalty platform! PAR Retail is looking for a Senior NodeJS engineer on its expanding product engineering team as we build and grow our Open Commerce enterprise software-as-a-service platform. 

Open Commerce is a technology suite that enables marketing professionals in the fuel & convenience industry to create real-time, hyper-personalized offers and customer interactions across a variety of channels (mobile, web, SMS, and in-person) to drive customer behavior toward a desired goal. 

Our technology bridges financial payment providers, retail fuel pump technology, and customer experience by wrapping low-level standards-compliant integrations with powerful software abstractions on an ultra-modern software platform. Our platform services and applications are built using a broad swath of technologies (Typescript, NodeJS, Ruby, React, and others), interconnected via GraphQL and RabbitMQ, and run in AWS using Terraform, Helm and Kubernetes (via EKS). 

PAR Retail has its headquarters in Philadelphia, Pennsylvania (USA) and leverages a diverse distributed product engineering and operations team across the United States and Ukraine. PAR Retail offers highly competitive compensation and benefits, as well as an engineering-friendly and product-centric culture. On PAR Retail’s Open Commerce team, we embrace a deeply collaborative software product development process where engineering, design, and product collaborate to shape and ship new functionality. 

Successful candidates will enjoy PAR Retail’s friendly and flexible culture, and embrace our relentless drive to excellence and goal of providing the #1 retail marketing platform in the fuel & convenience industry and beyond. 

Responsibilities 

• Working with the team, design and implement new functionality based on product objectives and requirements. 
• Work with the broader product engineering team to plan and coordinate feature and functionality improvements, as well as resolve bugs and execute technical enhancements, that cross-cut large parts of our platform. 
• Work to continually learn, improve technology skills, expand knowledge of the Open Commerce platform technologies, and gain increasing versatility across the breadth of our platform systems. 
• Expand APIs and business logic, and as needed write or revise customer-facing API documentation. 
• Work with our infrastructure team to enable and enhance highly-available, performant, and well-instrumented backend applications and services that run in our customer environments at substantial scale. 

• Support operations and infrastructure teams for issue resolution on relevant Open Commerce applications or services running in production environments. 

   

Qualifications 

• Practical experience building systems in Node.js 
• At least 5 years industry experience or equivalent 
• Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance 
• Familiarity with TypeScript, or similar modern strongly-typed language 
• Proficiency using both relational and non-relational database technologies 
• Strong understanding and familiarity with CI/CD pipelines and automated testing 
• Basic knowledge Docker and Kubernetes 
• Familiarity with OAuth and JWT 
• Some experience with front-end JS technologies, esp. React or Angular 
• An ability to work in service-based architectures 
• Highly independent and able to effectively self-organize and prioritize work 
• The ability to write clean code, and the discipline to write effective automated unit tests in order to deliver high-quality system improvements 
• An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system 
• Excellent spoken and written communication skills 

• BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience 

   

Bonus Points 

• Experience with Nest.js and/or GraphQL 
• Experience with Ruby on Rails 
• Experience with AWS 
• Experience working in distributed teams 

• Experience in the retail and/or fuel & convenience industries 

   

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Health insurance program;

- Flexible working hours;

- Sponsored company educational program, corporate library;

- Funny celebrations, team outings, and company events;

- A unique and friendly environment where everyone can explore and learn new technologies.

We are looking for CMO for our new client in iGaming domain to drive sustainable business growth in the region through a strong marketing strategy, scalable user acquisition, increased brand awareness, and optimized unit economics, taking into account local market specifics.

Company: Under NDA
Location: Remote

Schedule: Fulltime

Domain: iGaming 

Start: ASAP 

English: Fluent 

Key Responsibilities:

Develop and execute a regional marketing strategy focused on revenue growth and market share expansion.

Own and manage all acquisition channels: performance, affiliate, influencer, CRM, brand, and others.

Optimize the full marketing funnel: awareness → acquisition → onboarding → retention → LTV.

Analyze channel performance (ROI, CAC, LTV, NGR, GGR) and reallocate budgets accordingly.

Launch and scale marketing campaigns adapted to local market specifics (creatives, offers, channels).

Build and manage partnerships with affiliates, influencers, media buying teams, and vendors.

Lead and develop the regional marketing team.

Balance growth initiatives with strong unit economics to ensure sustainable profitability.

You have: 

Proven experience as CMO or Regional Marketing Lead in digital, tech, fintech, or similar industries.

Strong expertise in performance marketing and user acquisition at scale.

Hands-on experience managing marketing budgets and P&L responsibility.

Deep analytical mindset with practical experience working with ROI, CAC, LTV, NGR, and GGR.

Experience scaling marketing across multiple regions with local adaptation strategies.

Strong leadership and team management skills.

Strategic thinker with a hands-on, execution-driven approach.