Jobs at Djinni

Requirements

Position name: Senior Node.js Developer(with AI agents experience)
Level: Senior
Hard skills:

• 6+ years of Software Engineering experience
• Strong experience with Node.js (Express.js, Koa.js, Nest.js)
• Strong Software Design knowledge: OOD, FP, Design patterns
• Practical hands-on experience with AI prompt engineering, leveraging ArgumentCode, ClaudeCode, Cursor, or equivalent developer-AI tools.
• Deep understanding of RESTful and GraphQL APIs, modern web performance, and security.
• Solid understanding of LLM context design, tool integration, and code-generation workflows.
• Excellent knowledge of modern systems architecture components including microservices, event sourcing, and distributed data processing systems
• Advanced experience with SQL databases, especially PostgreSQL
• Experience with Docker & CI/CD processes
• Experience with AWS (or similar services like GCP or Azure)
• Experience with Serverless framework, AWS Lambdas, AWS CloudFormation
• Knowledge of Agile (preferably SCRUM) development practices

Would be great 😎:

• Strong experience with TypeScript
• Experience as a Tech / Team Lead on projects
• A computer science, software engineering, or related field master’s or bachelor’s degree
• Hands-on experience with message queuing/delivery services (Amazon SQS, SNS, RabbitMQ, Kafka, etc.)

Responsibilities:

• Propose process improvements and take ownership of the full cycle of feature delivery
• Integrate and optimize AI/LLM workflows (e.g., OpenAI, Anthropic, or local models) through prompt design, argument-code, or Cursor-based pipelines.
• Actively participate in technical discussions
• Participate in architectural design sessions, overall team meetings, product meetings, and communities of practice
• Create architectural designs to illustrate high-level solutions for applications and feature requests
• Architect, design, and collaborate with the team to deliver features and services into production
• Write and implement efficient, scalable, and secure backend code
• Conduct code reviews, maintain technical documentation, and support deployed systems

English level: at least Upper Intermidiate

We are looking for a Middle Swift (iOS) Developer to join our team and contribute to building a part of digital wealth management app.

DARLY SOLUTIONS is an international IT company specializing in delivering innovative solutions across FinTech, MedTech, SaaS, etc.

With years of experience in web and mobile development, UI/UX design, Quality Assurance, AI, and machine learning, we pride ourselves on creating impactful products that drive success for our clients.

Since 2018, we have successfully completed over 250 projects.
Examples of our work across various domains can be found on our website - https://www.darly.solutions/

We leverage cutting-edge technologies to craft powerful, forward-thinking solutions tailored to our clients’ needs. Our team is proficient in a diverse range of tools, including Angular, NestJS, React, Vue, PHP, Ruby, NodeJS, and many others.

Requirements:

• Develop and maintain iOS applications using Swift;
• Collaborate with cross-functional teams to define, design, and ship new features;
• Ensure performance, quality, and responsiveness of applications;
• Debug and resolve technical issues, improve application stability;

• Integrate APIs.

   

Responsibilities:

• 2-3 years of experience in iOS development;
• Strong knowledge of Swift and iOS SDK;
• Experience with RESTful APIs and JSON;
• Understanding of mobile app architecture patterns (MVC, MVVM);
• Familiarity with version control systems (Git);
• Experience with UI frameworks (UIKit; SwiftUI is a plus);
• English level: Intermediate / Upper-Intermediate (for communication with the client);
• Publishing apps in the App store.

About TEKTELIC

TEKTELIC is a Canadian company with over 15 years of experience in building reliable LoRaWAN® Network and IoT solutions. We focus on Facility Management, Asset & People Tracking, and Digital Health.

We are now expanding our marketing team and looking for a specialist who is passionate about content, curious about AI, and wants to take an active role in shaping TEKTELIC’s global presence. At the beginning, the role will focus on driving content globally as a sole contributor, with the possibility to grow and build a team in the second year.

What you’ll do

• Create clear and engaging marketing content for:

website pages, blog posts, case studies, brochures, decks, newsletters, social media posts, PRs etc.

• Turn technical input from engineers and product managers into simple, benefit-focused stories.
• Use AI tools daily (e.g. ChatGPT and others) for ideas, drafts, repurposing content, research, and light design.
• Support product launches, surveys, events, and webinars with the right content.
• Keep our website and key channels updated and learn from basic metrics (website, email, LinkedIn).
• Support our email marketing: segment lists, prepare campaigns, analyze performance, and offer improvements.
• Work with sales teams to deliver content that helps them communicate TEKTELIC’s value clearly.

What we’re looking for

• 5+ years in marketing / content / digital marketing in IT
• Create and manage Content Plan.
• Strong English writing skills: clear, structured, easy-to-read content.
• Hands-on experience creating different formats: texts, decks, social posts, basic visuals, or videos.
• Practical experience with AI tools and a strong interest in learning and adapting quickly.
• Ability to own a topic end-to-end: from idea → draft → final asset.
• Basic experience in SEO and content performance.
   

What you’ll get

• A chance to help build TEKTELIC’s content globally.
• Competitive compensation.
• Flexible work setup (Kyiv office or remote) and a supportive, international team.
• Well-being program.
• Health insurance.
• Paid Time-off and an additional week off during the Christmas Holidays.
• Engaging Team events.

About the Role

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

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

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

Responsibilities

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

Requirements

Core Skills

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

System-Level Understanding

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

Tools

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

Who This Is For

This role is for engineers who:

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

🔑  Ideal candidate:

• 7–10 years in iOS engineering / consulting, with senior-level ownership of complex mobile products

• 5+ years of hands-on Swift experience, including production work with SwiftUI

• Experience with SQLite, GraphQL and/or REST APIs, RxSwift, and Swift Package Manager in real delivery environments

• Experience with architectural patterns such as RIBs or MVI, plus strong practical use of dependency injection

• Solid engineering fundamentals, including memory management, retain cycles, concurrency, threading, Git, and Apple design principles

• Experience publishing iOS apps to the App Store and working with CI/CD pipelines

• Ability to solve complex engineering problems, contribute to technical direction, and mentor others

• Nice to have: enterprise environment experience, strong code review culture, automated testing, cross-functional collaboration with back end and UX/UI, and experience in Scrum / SAFe or long-term consulting setups

🔹 Client - Enterprise Banking Client in the Baltics

• Format: Hybrid (onboarding and occasional in-person meetings in Tallinn, Riga, or Vilnius)

Responsibilities:

• Managing a team of Affiliate Managers and Local Managers, setting targets and monitoring performance
• Expanding the partner network across key GEOs: Egypt, Morocco and priority African markets
• Negotiating deal terms with partners (CPA / Hybrid / RevShare / Fix) and controlling deal economics
• Driving FTD, DepSum, GGR / NGR growth, traffic quality control, player retention and ROI
• Sourcing, onboarding, reactivating and retaining high-performing partners; managing inactive and top-tier partners
• Cross-functional collaboration with Product, Marketing, Support, Compliance and Payments on GEO launches and scaling
• Building reporting systems, forecasts and growth plans across teams and regions

Requirements

Experience

• 2+ years in affiliate / iGaming, including 1+ year in a management role
• Proven track record in MENA (Egypt and Morocco required) and African markets
• Hands-on experience working on an iGaming / affiliate platform is a must

• Experience managing a team of 5+ people and scaling it

   

Knowledge

• CPA, RevShare, Hybrid, unit economics, ROI / payback, GGR / NGR
• Traffic sources, local market specifics, payment methods and regional risks
• Partner analytics, antifraud practices, funnels and retention

A promising iGaming project operating for over a year is actively hiring new talent

Expanding across Asia, MENA & Africa - and we’re looking for Affiliate managers who know their local markets and can drive real affiliate growth.
If you have iGaming / betting affiliate experience and a true acquisition mindset - let’s talk.

Responsibilities:

• Active partner sourcing, negotiation, account management and scaling
• Partner performance analysis via PowerBI, tracking growth/decline trends, identifying growth opportunities and ability to recover underperforming partners
• Managing Fix/CPA deals, negotiating and securing favorable terms
• Monitoring contract compliance and traffic quality control
• Briefing content and design tasks. Managing promotional materials

• Meeting deadlines on assigned tasks

   

Requirements:

• Proactivity, ambition, and ability to work independently.
• 2+ years of experience in the affiliate industry within iGaming / Gambling.
• Active/live base of webmasters.
• English - B2

• Russian - C1

   

Conditions:

• Remote work.
• Fixed salary + bonus (discussed individually).

About Crsel

Crsel is an innovative creative product that empowers creators to produce stunning visual content effortlessly. We combine beautifully crafted templates, stickers, and advanced editing tools to help users turn ideas into eye-catching visuals in minutes. Crsel is already used by 1.5 million + creators and continues to scale rapidly. We are building the next generation of creative tools on iOS and Android, with a strong focus on performance, real-time media processing, and delightful user experience.

We’re looking for a Manual Quality Assurance Engineer who wants to have real impact on the product, work closely with the tech team, and help shape both the design direction and the future of Crsel.

Role Description

As our Manual QA Engineer, you will be the quality guardian of Crsel's iOS and Android apps - ensuring every feature we ship meets the highest standards of performance, reliability, and user experience. You'll work directly with our development and design teams to test new features, catch regressions, and help us maintain the delightful, polished feel our 1.5M+ creators expect.

This is a high-ownership role where you'll build and maintain our QA process from the ground up — writing test plans, managing bug lifecycles, and becoming the go-to expert on how our product behaves across devices and edge cases. 

You'll be deeply involved in testing our subscription and monetization flows, media processing pipelines, and cross-platform consistency, collaborating closely with founders who are hands-on, product-obsessed, and genuinely value your input.

Required Qualifications    

• 3+ years of manual testing experience with native mobile applications (iOS & Android)
• Strong understanding of functional, regression & non-functional testing (performance, usability, memory usage)
• Experience with mobile-specific testing scenarios (app lifecycle, background/foreground, interruptions, network conditions, permissions)
• Strong experience in UI/UX testing & cross-device / cross-OS behaviour validation
• Understanding of media app specifics: photo/video processing, rendering, performance across devices
• Experience with subscription monetization testing: in-app purchases, trial periods, purchase restoration, offline purchase flows
• Solid experience in writing test cases, bug reports, test plans, test strategies, and maintaining test documentation
• Understanding of App Store and Google Play release lifecycle and distribution (e.g. TestFlight, Firebase App Distribution)
• Basic understanding of REST APIs and network debugging strategies
• Experience with bug tracking systems & collaboration tools (e.g., Jira, Notion, Slack)
• Experience with analytics & subscription management tools: Amplitude (or similar), Firebase Remote Config, Adapty (or similar)
• Strong attention to detail, analytical thinking & communication skills
• Ability to build a testing process from scratch independently

What We Offer

• Fully remote work model - work from anywhere.
• No corporate BS and no meetings that could have been an email.
• Opportunity to work on a fast-growing product used by over 1.5 million creators.
• Work closely with founders: Our founders are not just experienced entrepreneurs, they are major Instagram influencers with 9M+ followers. You’ll have direct access to their vision, creativity, and insights, shaping the product from the ground up.
• Full Quality Assurance ownership
• Learning and growth opportunities: explore new tools, shape design processes, and define the visual identity of new products.
• Competitive compensation.
• Flexible schedule and a founder-led, product-focused culture.

Boosty is a company specializing in the sale of dietary supplements. Our mission is to simplify people's lives by helping them use fewer but more effective products. We strive to build a community that aspires to live long and healthy lives.

Our products contain vitamins and minerals that strengthen the immune system and improve overall health. We are actively expanding and looking for a Product Marketing Manager.

📌 Main responsibilities:
 

• Researching and analyzing references (top e-commerce players, competitors)
• Building page structures together with the team
• Coordinating content creation (copywriting, design)
• Assigning tasks for development and overseeing launch execution
• Handing over pages to the media buying team
• Tracking tests and performance results
• Initiating and launching A/B tests
• Assisting in the end-to-end preparation and delivery of new landing pages (3–4 new pages per month) 
• Participating in the creation of new pages (including B2B)

📌 Requirements:
 

• 1+ years of experience in marketing (e-commerce, content marketing, or performance marketing preferred) 
• Understanding of conversion principles and user behavior
• Experience working with landing pages and funnel-based structures
• Ability to manage multiple projects and meet deadlines
• Data-driven mindset (comfortable working with metrics and making decisions based on data)
• Basic understanding of A/B testing methodology
• Сommunication skills to effectively collaborate with designers, copywriters, and developers 
• Strong organizational and execution skills
• English at least at an intermediate level (for tools, documentation, communication)

📌 Preferred qualifications:
 

• Experience in DTC brands or fast-scaling e-commerce projects
• Familiarity with tools like Shopify, GA4, Hotjar, Triple Whale (or similar)
• Basic understanding of paid traffic (Meta Ads, Google Ads) and its impact on landing page strategy. 
• Interest in the Health & Wellness industry and dietary supplements.
• Basic UX/UI understanding

📌 Hiring roadmap:

Interview with a recruiter.

Final interview.

Receive an offer!

📌 What we offer:

Remote work with a flexible schedule.

Competitive salary with regular reviews.

Professional development and training at the company's expense.

Participation in exciting and ambitious projects.

Friendly and supportive team.

Career growth opportunities within the company.

Compensation for work equipment (if needed).

Access to modern tools and technologies.

Unifight Finance is a fintech company operating in the payments / merchant acquiring space.

We are building a regulated payments infrastructure in the UK — and key functions, including compliance, are being designed from scratch (not maintaining legacy systems).

We are looking for someone who doesn’t “maintain compliance” — but builds it properly from the ground up.

You will be:

• the owner of the regulatory compliance function
• the internal auditor who actually challenges the business
• the person who can say “this is a risk” — and fix it

What you’ll be doing

• Build and own the Safeguarding Framework (PSR 2017)
• Run real internal audits across Finance and Operations
• Ensure safeguarding accuracy (reconciliation, segregation, deadlines)
• Own the breach register and investigate root causes
• Manage regulatory reporting to the Financial Conduct Authority (FCA Connect / RegData)
• Translate regulatory changes into real business processes
• Prepare board-level reporting (Compliance MI packs)
• Own Consumer Duty and conduct risk
• Ensure compliance with Visa / Mastercard frameworks (GARS / BRAM)

Who we’re looking for

• 5+ years in payments (EMI / PI / acquiring)
• Strong, hands-on knowledge of PSR 2017 and safeguarding
• Solid understanding of settlement cycles (T+1 / T+2)
• Experience submitting FCA reports
• Ability to identify issues — and actually resolve them

Not a fit if

• AML / Financial Crime only background
• Policy-only / theoretical compliance
• Banking compliance without payments exposure
• Consulting without ownership

Why this role stands out

• Build the compliance function from scratch
• Direct reporting line to CEO
• No AML — pure regulatory focus
• High ownership and autonomy
• Real impact on business and product

Conditions

• Remote / Hybrid / London
• Full-time, 9:00–18:00 UK time
• Direct reporting to CEO
• Fast decision-making environment
• Compensation discussed individually

Your Go experience caught my eye! We’re building a team for an international CPaaS platform that powers messaging for AliExpress and 500+ global brands. And looking for a Full Stack Engineer (Go + React). 15+ years on market, flexible remote setup, strong team.

We are looking for a Senior Full Stack Engineer who is comfortable working on high-load, distributed systems and making architectural decisions, not just implementing tasks.

You will work on a CPaaS/CCaaS platform handling messaging and voice communication at scale. This is not a typical CRUD product: you’ll deal with real-time flows, external integrations, billing complexity, and systems where design mistakes surface quickly in production. You will be expected to take ownership from design to delivery and challenge assumptions when needed.

Main Responsibilities

– Design and implement new platform capabilities across backend and frontend (not just “features” but system-level improvements)

– Contribute to architecture decisions in a microservices environment (Go-based services, event-driven patterns, APIs)

– Build and evolve React-based interfaces used by enterprise customers and internal teams

– Work on integrations with external vendors (messaging providers, voice, billing systems)

– Investigate production issues in a high-scale environment and drive them to resolution—not just patch them

– Participate in technical discussions, trade-off analysis, and system design reviews

– Occasionally lead initiatives or own a domain end-to-end

Mandatory Requirements

– 4+ years of real production experience as a Full Stack Engineer

– Strong backend expertise with Go (3+ years), not just syntax, but concurrency, performance, and system design

– Solid frontend experience with React + TypeScript (2+ years)

– Experience building or maintaining distributed systems / microservices

– Good understanding of data modeling (SQL + NoSQL) and when to use each

– Ability to debug complex issues across services (not limited to your own code)

– Comfortable working in an environment where requirements evolve and not everything is predefined

Will be a plus

– Experience with real-time systems, messaging, or telecom domains

– Familiarity with event streaming (Kafka or similar)

– Experience with cloud platforms (GCP preferred)

– Exposure to billing systems or high-throughput APIs

What you get

– Work on systems that actually operate at scale and have real business impact

– A team where senior engineers are expected to influence architecture, not just execute

Remote work

We offer

– Your Wellness: Access to mental health programs, comprehensive medical insurance, and a sports card

– Your Happiness: Enjoy the company of cool teammates, a friendly atmosphere, a strong mentorship, and a variety of bonuses & corporate gifts

– Your Development: Benefit from free educational events & courses, and English classes with native speakers

– Your Career: Focus on your professional development in a supportive environment

– Work-Life Balance: Choose your working format – remote, office-based, or hybrid and engage in team-building activities

Think this role’s got your name on it? Go ahead and apply, we’d love to see what you’ve got!

*Medical Insurance and Sport Card perks are available for employees located in Bulgaria.

Your engineering maturity caught my eye! For a product company we`re seeking a Senior Full Stack to design systems with full ownership. High-load, event-driven architecture, no micromanagement. Even if you’re new to Go/React, your system thinking is key to starting this path. 

Experience with Go and/or React is an advantage but not required.

Main Responsibilities

– Design and implement features from idea to production

– Work across backend, frontend, APIs, databases, and integrations

– Participate actively in Scrum ceremonies and contribute to planning and estimation

– Take architectural decisions and improve existing system design

– Write clean, testable, maintainable code

– Perform code reviews and mentor other engineers

– Improve performance, reliability, and scalability of the system

– Work closely with Product, QA, and DevOps

Mandatory Requirements

– 7+ years of hands-on software engineering experience

– Strong understanding of system design and architecture

– Proven experience building and maintaining high-load, event-driven systems

– Ability to work across the full stack (backend + frontend)

– Experience working in Agile / Scrum teams

– Strong ownership and accountability for delivered features

– Solid understanding of APIs, databases, and modern web architectures

– Experience with Git and CI/CD workflows

– Ability to learn new technologies quickly and independently

Will be a plus

– Experience with Go

– Experience with React or modern frontend frameworks

– Experience with microservices and distributed systems

– Experience with cloud environments and containers

– Experience with observability and monitoring tools

We offer

– Your Wellness: Access to mental health programs, comprehensive medical insurance, and a sports card

– Your Happiness: Enjoy the company of cool teammates, a friendly atmosphere, a strong mentorship, and a variety of bonuses & corporate gifts

– Your Development: Benefit from free educational events & courses, and English classes with native speakers

– Your Career: Focus on your professional development in a supportive environment

– Work-Life Balance: Choose your working format – remote, office-based, or hybrid and engage in team-building activities

Think this role’s got your name on it? Go ahead and apply, we’d love to see what you’ve got!

*Medical Insurance and Sport Card perks are available for employees located in Bulgaria.

We are seeking a Senior Software Engineer with strong Java backend development experience, deep database knowledge, and hands-on experience building modern cloud-based applications.
This role is focused on new product development, backend  architecture, database performance, containerized deployments, and reliable cloud-native software engineering. The ideal candidate is a strong individual contributor with excellent analytical skills, practical experience with enterprise-grade backend systems, and the ability to work independently in a fast-moving startup environment. This person should be comfortable designing, building, testing, optimizing, and deploying backend services that are reliable, secure, scalable, and maintainable. A strong ability to use modern AI tools effectively in everyday engineering work is required.
 

Key Responsibilities
- Design, develop, test, and maintain backend software using Java.
- Build reliable and scalable backend services for a database optimization platform.
- Participate in new product development, including architecture, implementation, performance tuning, and deployment.
- Design and implement REST APIs, service-layer components, data access layers, and integration points.
- Work with relational databases, especially PostgreSQL, with a strong focus on performance, query optimization, schema design, indexing, and troubleshooting.
- Analyze execution plans, identify database bottlenecks, and recommend or implement corrective actions.
- Develop containerized applications and deployment-ready services.
- Participate in cloud-native application development and deployment, especially in Azure-based environments.
- Support and improve CI/CD pipelines, automated testing practices, deployment processes, and release reliability.
- Apply secure coding practices and follow cloud security principles.
- Perform root-cause analysis for complex technical problems across application, database, operating system, and cloud layers.

- Write clean, maintainable, well-documented code.
- Participate in code reviews and contribute to engineering standards.
- Mentor less experienced engineers when needed.
- Use AI tools effectively and responsibly for coding, debugging, analysis, documentation, test generation, and technical research.
 

Required Qualifications
- 5+ years of professional Java development experience.
- Strong experience with backend application development.
- Strong understanding of the Java ecosystem, including Spring Framework / Spring Boot, REST API development, JPA / Hibernate, JDBC and database integration, multithreading and concurrency, and Java performance tuning and memory management.
- 3+ years of experience with Azure cloud environments.
- Hands-on experience with both Windows and Linux operating systems.
- Strong PostgreSQL experience, including SQL development, query optimization, schema design, indexing strategies, execution plan analysis, performance troubleshooting, and data migration
concepts.
- Strong experience with modern cloud DevOps practices, including CI/CD, cloud deployment models, release automation, environment configuration, and deployment troubleshooting.
- Strong experience with containers, especially Docker.
- Strong understanding of software architecture and design, including scalable and maintainable system design, distributed systems concepts, service-oriented or microservices architecture,
technical tradeoff analysis, and legacy modernization.
- Strong testing and code quality practices, including unit testing, integration testing, test automation, code reviews, debugging, and root-cause analysis.
- Strong analytical and problem-solving skills.
- Ability to work independently and take ownership of complex technical problems.
- Strong communication skills and ability to clarify requirements, explain tradeoffs, and propose practical solutions.
- Demonstrated ability to use AI tools productively and responsibly in daily engineering work.
 

Highly Desired / Big Plus

- Experience with MS SQL Server.
- Experience with other database platforms.
- Experience with Infrastructure as Code tools such as Terraform, Bicep, ARM templates, Pulumi, or similar.
- Experience with observability tools and practices, including logging, metrics, tracing, monitoring, alerting, and application performance diagnostics.
- Deeper understanding of cloud security operations, including identity and access management, secrets management, role-based access control, secure network configuration, and secure
deployment practices.
- Experience with Kubernetes or other container orchestration platforms.
- Experience with enterprise-grade, data-intensive applications.
- Experience working in startup-style or fast-moving product development environments.

- Good English communication skills.
 

AI Tooling Expectations
The successful candidate should be able to use AI tools as a regular part of their engineering workflow. This includes using AI to:
- Accelerate coding and refactoring.
- Generate and improve unit and integration tests.
- Assist with debugging and root-cause analysis.
- Analyze logs, errors, SQL queries, and execution plans.
- Draft technical documentation.
- Research technical approaches and compare implementation options.
- Improve productivity without compromising code quality, security, or correctness.
The candidate must understand that AI-generated output requires careful review, validation, testing, and security awareness.
 

Ideal Candidate Profile
The ideal candidate is a senior-level backend engineer who combines strong Java development skills with practical cloud, DevOps, database, and performance engineering experience.
This person should be comfortable working across application code, database design, deployment pipelines, containers, and production troubleshooting. They should be analytical, self-directed,
technically mature, and capable of making sound engineering decisions without requiring heavy supervision.
Because we are building a state-of-the-art database optimization platform, the strongest candidates will be those who enjoy technically challenging work, understand performance-oriented
engineering, and are comfortable working in a startup environment where ownership, initiative, and practical problem-solving are highly valued.

Уявіть, ви відповідаєте за бекенд high-load розподілені, орієнтовані на гравців промо-функції в найкращому iGaming продукті. Шукаємо Tech Lead: strong backend, message brokers, повний ownership. Ви вирішуєте, створюєте, впроваджуєте. Ми надаємо ремоут і найкращі умови ринку.

Focus: High-load, distributed, player-facing promo features (network promotions)

Role type: Hands-on Tech Lead (80% delivery / 20% team leadership)

Why this role

We’re scaling Promotional Features domain and building the Boosters direction further as part of our growth. This is a hands-on leadership role where you’ll personally build and ship production-ready features and own the technical direction of the Boosters team. Performance, scalability, and reliability are non-negotiable.

Boosters is responsible for player-facing network promotional features such as:

• Tournaments
• Free Spins
• Progressive Jackpots
• Smart Prize Drop Systems

Team & Collaboration model

Tech Boosters is an end-to-end cross-functional squad including:

• Full-stack & Backend Engineers
• Automation QA & Manual QA
• SRE

Product Boosters

• Product Manager
• Product Designer
• Product Analyst

There is no classic Product Owner/PM in the squad. You’ll work with a product commercial manager who acts as the customer – defines what is needed, why and how fast it is needed on the market. Your tech team owns how it will be built and when it will be delivered.

Main Responsibilities

– Own technical decisions and technical part of the products and architecture for Boosters services (hands-on, production-grade)

– Develop and maintain backend applications for promotional features

– Drive delivery as a key contributor: tech design → implement → test → release → operate

– Optimize existing systems for performance, scalability, and reliability in a distributed environment.

– Lead the team execution with a “PoC-first” approach: fast validation → measurable outcomes → production hardening

– Conduct code and architectural reviews; set engineering standards and best practices

– Be the go-to technical owner: any tech problem in the domain is your problem to solve (with the team)

– Participate in on-call rotation and continuously improve operability (monitoring, alerting, runbooks, incident reviews)

Mandatory Requirements

– Strong proficiency in Node.js and TypeScript (our primary backend stack). We’re also open to strong backend engineers from other ecosystems (e.g., Go, Java, C#, C++) who are ready to ramp up quickly

– Strong understanding of asynchronous programming and concurrency patterns

– Experience building distributed systems and working with messaging and coordination tools (e.g., Kafka, RabbitMQ, NATS, distributed locks)

– Experience with gRPC in production environments

– Solid knowledge of databases: relational (MySQL, PostgreSQL), columnar (ClickHouse), and NoSQL (DynamoDB, MongoDB)

– Experience with cloud platforms (AWS/GCP/Azure) and Kubernetes

– Skilled in building and maintaining unit and end-to-end tests

– Proven track record of delivering production-ready solutions

– Experience working with large-scale microservices architectures

– Degree in Computer Science or a related field (or equivalent practical experience)

Preferred additional qualifications:

– Understanding of application security and industry best practices

We offer

– Remote-first with flexible working arrangements across Europe or Ukraine

– Competitive compensation package (with performance-based bonuses up to 50%)

– Unlimited paid vacation & sick leave (B2B model)

– Premium health insurance (for you + 1 family member)

– Learning & development support (courses, certifications, mentoring, conferences)

– International exposure – attend industry expos, team gatherings & global meetups