Jobs at Djinni

Hello.

We are looking for a Middle+/Senior Node.js Developer to join Ohayu (https://ohayu.com). We are building the easiest way for travelers to stay online anywhere in the world. We’re a fast-scaling B2C mobile + web app (iOS/Android/Web) that lets people buy eSIM data plans in minutes - cheaper than roaming, no SIM shops, no hassle. Thousands of travelers already use Ohayu worldwide, and we’re just getting started.
Our ambition is bigger than eSIM: we’re evolving Ohayu into a full Travel App that makes every journey smoother.

What you’ll do:

This role is for someone who wants real ownership and real product impact.

• Own integrations with third-party APIs (telco/eSIM providers, payments, analytics, etc.) - abstraction layers, reliability, observability, edge cases, scale.
• Shape backend direction: architecture decisions, technical standards, and how we build/ship safely at speed.
• Enable rapid experimentation: implement backend changes for A/B tests and product iterations that directly impact conversion and retention.
• Build and maintain production-grade services: migrations, logging, alerts, uptime, and smooth releases.

What we’re looking for:

• 5+ years of backend with OOP experience
• 5+ years with Node.js + TypeScript
• 2+ years with NestJS
• 5+ years with MySQL / MariaDB / PostgreSQL
• Hands-on production experience: migrations, monitoring/logging, alerts, process managers (pm2/supervisor), incident mindset
• You work independently, communicate clearly, and take responsibility end-to-end
• At least intermediate English level (all work communication is in English)

Nice to have:

• Experience with high-load systems
• Experience supporting A/B testing and experimentation platforms/pipelines

Why to join us:

• Direct product impact: what you ship gets used immediately by real travelers.
• Ownership: you’re not “a contributor,” you’re a builder helping set the backend direction.
• Product engineering culture: we care about UX and conversion as much as we care about clean code.
• Fast pace, real learning: constant iterations, clear feedback loops, real-world constraints.
• Genesis ecosystem: access to strong expertise, resources, and networking.
• Benefits: health insurance, 20 paid vacation days, annual performance review with clear salary progression.

Work format: Possibility to work fully remotely or from our offices in Warsaw, Kyiv or Lviv.

Join us in reshaping the future of connectivity.

Due to the launch of a new project, we are looking for a  Junior Automation QA Engineer (JS) to join our technical team and ensure stable product quality.

Responsibilities:

• Develop and maintain automated tests to ensure product stability;
• Create and execute test cases, covering critical areas with API/UI automation;
• Support and enhance the existing test automation framework based on new requirements;

• Work closely with developers and manual QA engineers to improve product quality.

   

Required Skills:

• 1+ years of experience with JavaScript/TypeScript and Playwright in test automation;
• Understanding of QA methodologies, tools, and processes;
• Basic programming skills and familiarity with OOP principles;
• Knowledge of JavaScript and experience in test automation;
• Hands-on experience with at least one test automation framework: Cypress, WebdriverIO, or Playwright;
• English (Intermediate level, written and spoken);

• Self-motivated, proactive, and result-oriented mindset.

   

Nice to Have:

• Experience with Linux, Docker;
• Knowledge of CI/CD processes;
• Experience working with SQL;

• Ability to integrate API calls with UI tests.

   

What We Offer:

• Work with experienced colleagues who are ready to share their knowledge;
• Opportunities for professional development and career growth;
• Involvement in various projects covering different areas of software development;
• Free English courses and daily language practice with colleagues;
• Paid vacation and sick leave.

We are looking for a Mobile QA Automation Engineer to join our team and strengthen our mobile test automation efforts. You will focus on designing, building, and maintaining automated tests for native iOS and Android applications using Appium, WebdriverIO, and JavaScript/TypeScript. Practical experience in coverage of native mobile apps with automated tests is essential.

 Responsibilities

• Design, develop, and maintain mobile test automation using Appium and WebdriverIO.
• Collaborate with developers and QA team to ensure high test coverage and product quality.
• Build and support automation frameworks, standards, and reusable components from scratch.
• Integrate tests into CI/CD pipelines (e.g., GitHub Actions, GitLab CI).
• Analyze test results, report defects clearly, and participate in debugging/release cycles. 
• Contribute to QA best practices, documentation, and continuous improvement.

Requirements

• At least 6 months of experience with Appium for mobile test automation.
• Practical experience writing automated tests in JavaScript/TypeScript with WebdriverIO.
• Demonstrated experience in mobile automation test coverage of native apps (not just scripting).
• Ability to build or extend automation framework from scratch
• English communication at B1 (Intermediate) level or higher.

We are looking for a Junior Full-Stack Developer (Nest.js + React.js).

Required Skills & Qualifications:

Experience:

• Over 2 years of hands-on experience in designing and developing scalable applications, encompassing both frontend and backend technologies.

Backend:

• Node.js (2+ years of commercial experience);
• API & Integration Skills: Strong knowledge of RESTful API development, third-party integrations, and various communication protocols.
• TypeScript;
• NestJS;
• MySQL/PgSQL;
• RMQ, Redis.

Frontend:

• React.js (1+ years of commercial experience);
• TypeScript;
• Redux/RTK/Mobx;
• SWR/RTK-Query;
• Hooks;
• SASS, Bootstrap, or something similar.

Language Proficiency:

• Upper-Intermediate+ English level, with the capability to discuss and collaborate effectively with global teams.

Nice to Have:

• Version Control & CI/CD: Extensive experience with version control systems (e.g., Git) and the setup and management of CI/CD pipelines.

We offer:

• Maximum flexibility;
• Professional trainings, conferences, and certifications;
• Corporate events and benefits;
• Professional literature;
• English courses.

We are looking a highly skilled Senior DevOps Engineer to join our team. In this role, you will help optimize our infrastructure, improve deployment and delivery processes, and ensure the reliability, scalability, and security of our services.

Responsibilities

• Build, operate, and continuously improve production infrastructure and deployment pipelines
• Manage and scale Kubernetes environments and associated cloud services
• Improve platform reliability through monitoring, alerting, and incident response practices
• Automate infrastructure provisioning and configuration using Infrastructure-as-Code tools
• Partner with engineering teams to streamline build/release processes and optimize developer experience
• Implement and promote security best practices across infrastructure and CI/CD workflows

• Troubleshoot complex system issues across cloud, networking, and container orchestration layers

   

Requirements

• 5+ years of experience in a DevOps/SRE/Platform Engineering role
• Strong knowledge of cloud platforms: AWS, Azure, or Google Cloud Platform
• Deep hands-on Kubernetes expertise, including managed platforms (EKS, AKS, GKE) and internals
• Experience with monitoring, logging, and alerting tools such as Prometheus, Grafana, Datadog, Coralogix, Logz.io
• Strong experience with containerization technologies (Docker, containers/CRI) and Kubernetes tooling (kubeadm, Minikube)
• Hands-on experience with infrastructure automation tools such as Terraform, Helm, ArgoCD, Terragrunt
• Strong scripting skills in Python, Bash, or similar languages
• Solid understanding of security concepts, principles, and best practices
• Excellent problem-solving abilities, attention to detail, and communication skills

This is a fantastic opportunity to join a fast-growing company at the heart of the digital revolution. Our software product is revolutionising manufacturing through automation. We are trusted by global brands and work across sectors (mobility, consumer goods, machinery etc).

We have a talented and ambitious team. We value integrity and are passionate about our mission to revolutionise advanced manufacturing.

This is your opportunity to:

• Be part of a fast-growing software product company in advanced manufacturing.
• Learn and fulfil your potential in an open, knowledge-driven culture.
• Share in our ambitious vision and make a meaningful difference towards autonomous manufacturing.

Responsibilities: 

• Development of new features and new parts of the app.
• Work in a cross-functional Scrum team alongside Frontend and QA Engineers.
• Maintaining, improving and extending existing functionality.
• Сonstantly improving code organization and evolving application design.

You will be joining a well-versed team if you have:

• Bachelor’s Degree or Master’s Degree in Computer Science.
• Minimum of two years of experience in Node.JS development.
• Minimum of one year of experience in React.JS development.
• Experience with Sequelize, PostgreSQL, database design, microservices.
• Test automation coverage.
• Understanding of CI/CD.
• Git branching strategies.
• Scrum Agile principles and processes.
• English level - Intermediate and higher.

Our tech stack: microservices, Node.JS, React.JS, PostgreSQL, Kubernetes, AWS.

Required Technologies:

Node.js, Express.js / Nest.js
JavaScript (ES6+) / TypeScript
SQL (PostgreSQL, MySQL), NoSQL (MongoDB, Redis)
REST API, GraphQL, WebSockets
Git (GitHub/GitLab), Docker (preferred)
Postman for API testing
 

Nice to Have:

Understanding of OOP, SOLID principles, and design patterns
Experience with testing frameworks (Jest, Mocha, Chai)
 

Requirements:

English level: B1 or higher
Strong motivation to learn and develop in backend engineering
 

We Offer:

Interesting and challenging projects
Vast opportunities for professional development
Competitive salary
Friendly team of professionals
Comfortable working environment

We’re a development studio that ships digital products fast.

We build MVPs in 3 to 6 weeks, and deliver services, web and mobile apps, and internal systems for clients across Europe, the US, and Asia.

We work remotely, stay flexible, and focus on outcomes.

We launch products and keep improving them together with the client after release.

If you’re in IT and want to build real products and see fast releases, you’ll fit in.
 

Who we’re looking for

Product Manager (Middle)

Focus on building successful digital products by aligning business goals, user needs, and development execution. Our typical workflow and tools:

• Product discovery, market and user research
• User interviews, JTBD, problem validation
• Roadmaps, OKRs, prioritization frameworks
• MVP definition and scope management
• Backlog management (Jira, Linear, ClickUp, Notion)
• Collaboration with design, frontend, backend, and mobile teams
• Product analytics (GA4, Amplitude, Mixpanel — when needed)
• A/B testing and hypothesis validation
• Stakeholder communication and reporting
• Documentation: PRD, specs, user stories

What you’ll do

• Define product vision, strategy, and roadmap
• Validate ideas through research and rapid MVPs
• Translate business goals into clear product requirements
• Manage backlog, priorities, and sprint planning
• Work closely with designers and engineers
• Launch products and iterate based on user feedback and data
• Monitor key metrics: activation, retention, conversion, revenue
• Align internal teams and external stakeholders
• Improve product-market fit and scalability

Skills we’re looking for

• Experience working with digital products (web/mobile/SaaS)
• Strong analytical and problem-solving skills
• Ability to write clear PRDs and specifications
• Understanding of agile/scrum processes
• Experience with product analytics and metrics
• Basic technical understanding (APIs, architecture, development process)
• Ability to use AI tools for faster workflows: research, analysis, documentation, ideation (with mandatory quality checks)
• Strong communication and leadership skills
• Ownership mindset and responsibility for results

We’re a development studio that ships digital products fast.

We build MVPs in 3 to 6 weeks, and deliver services, web and mobile apps, and internal systems for clients across Europe, the US, and Asia.

We work remotely, stay flexible, and focus on outcomes.

We launch products and keep improving them together with the client after release.

If you’re in IT and want to build real products and see fast releases, you’ll fit in.
 

Who we’re looking for
 

UI/UX Designer (Middle)

Focus on designing user-friendly, scalable, and business-oriented digital products. Our typical workflow and tools:

• User research, interviews, usability testing

• User flows, customer journeys, wireframes

• UI design for web and mobile applications

• Interactive prototypes and design validation

• Design systems, component libraries, style guides

• Figma (Auto Layout, Variants, Prototyping)

• Collaboration with developers and product managers

• Accessibility (WCAG), responsive and adaptive design

• Analytics-based improvements (Hotjar, GA, Amplitude — when needed)

• Design handoff and documentation for development teams

What you’ll do

• Design interfaces for MVPs and production products

• Create user flows, wireframes, and interactive prototypes

• Build UI for dashboards, onboarding, forms, and complex systems

• Develop and maintain design systems

• Work closely with frontend and mobile developers

• Participate in product discovery and UX research

• Improve usability, conversion, and retention after launch

• Iterate quickly based on feedback, analytics, and testing

Skills we’re looking for

• 2+ years of experience in UI/UX or product design

• Strong portfolio with web and/or mobile projects

• Confident work in Figma

• Understanding of UX principles and user-centered design

• Experience working with development and product teams

• Knowledge of responsive and adaptive design

• Basic HTML/CSS knowledge is a plus

• Ability to use AI tools for faster workflows: ideation, wireframes, content, research (with mandatory quality checks)

• Ability to present and defend design decisions

• Responsibility, clear communication, and teamwork

What we value

• Working fast while keeping quality high
• Independence and responsibility
• Product mindset
• Experience shipping MVPs and working in short iterations

We value people who take tasks all the way to production and can support a product after release.

What you get
 

• Remote work
• Flexible schedule
• International projects
• Fast MVP launches
• Post launch support and product development
• Long term project work, not one off tasks
• Small, strong team with minimal bureaucracy
• Growth in skills and compensation

If you like fast launches and improving products after release, message us.

AI Business Analyst

We invite you to join our product team developing a B2B SaaS platform specializing in Unreal Engine and next generation 3D visualization platforms for e-commerce.

Responsibilities:

1. Analyze existing business processes and workflows to identify where AI/ML solutions can drive efficiency or create value
2. Monitor the AI landscape and keep the product team and business stakeholders informed on emerging tools, particularly for 3D modeling, image generation, video generation, and editing
3. Design and execute experiments to evaluate AI products, writing test scenarios aligned with existing product workflows
4. Engineer and refine prompts for various AI systems
5. Research technical requirements for integrating AI tools with our Angular front-end, back-end services, and Unreal Engine applications to inform integration decisions

6. Conduct cost-benefit analyses and develop business cases for proposed AI investments

    

Requirements:

1. Hands-on experience with AI image generation models
2. Understanding of image generation control techniques such as ControlNet, IP-Adapter, or similar approaches
3. Familiarity with fine-tuning methods including LoRA (Low-Rank Adaptation) or equivalent techniques
4. Experience building or configuring AI agents, workflows, or automated pipelines using available platforms or frameworks
5. Written and spoken English sufficient for direct communication with US-based stakeholders
6. Ukrainian/russian language is needed to communicate with the team.
    

Nice to Have:

1. Familiarity with 3D modeling workflows and asset pipelines
2. Understanding of marketing image and video production processes
3. Ability to assess visual quality of AI-generated images and videos against production standards
4. Experience with AI-assisted development or coding tools

We invite an experienced sales manager to join a team working on exciting products for our customers. 

Location: Ukraine, remote, full-time.

Remuneration: Salary+bonus 

Requirements:

- Experience in IT sales (3+ years), specifically in outsourcing and outstaffing services

- Hands-on experience with Upwork, LinkedIn, and other sales channels

- Strong understanding of and hands-on experience working with European and US markets

Responsibilities: 
• Build and maintain a structured sales process (funnel creation, lead nurturing, regular follow-ups).
• Manage communication with potential and existing clients through  messages, calls, and online meetings.
• Work with existing clients to ensure satisfaction, upselling, and long-term cooperation.
• Conduct discovery calls with potential clients to understand needs and propose suitable outsourcing/outstaffing solutions.
• Collaborate closely with the delivery team to prepare tailored offers and proposals.
• Keep sales pipeline updated in the CRM system and provide regular sales reports.
• Stay up to date with IT outsourcing/outstaffing trends and competitor activities.
 

We are a development studio that launches digital products fast.

We build MVPs in 3–6 weeks and create services, web and mobile applications, and internal systems for clients from Europe, the USA, and Asia.

We work remotely, stay flexible, and focus on results.
 

We launch products and continue developing them together with our clients.

If you work in IT and want to build real products and see fast releases, you’ll fit right in.

Who we’re looking for

Mobile Developer (Middle+)

Focus on building mobile applications for iOS and Android. Our typical tech stack:

• Native iOS (Swift, SwiftUI, UIKit)
• Native Android (Kotlin, Jetpack, Compose, XML)
• React Native (TypeScript)
• State management: Redux, Zustand, MobX (depending on the task)
• API: REST, sometimes GraphQL
• Auth: JWT, OAuth, biometrics
• Payments: Apple Pay, Google Pay, Stripe SDK
• Realtime: WebSockets, Firebase / Pusher (when needed)
• Storage: SQLite, Room, Core Data, AsyncStorage
• Tooling: Xcode, Android Studio, Fastlane, ESLint, Prettier
• CI/CD: GitHub Actions, Bitrise, TestFlight, Play Console
• Analytics: Firebase Analytics, Amplitude, GA4, AppsFlyer
• Crash reporting: Firebase Crashlytics, Sentry
• Performance: profiling, memory leaks, startup time

What you’ll do

• Develop mobile applications from MVP to production
• Build user dashboards, onboarding flows, forms, and payment features
• Integrate mobile apps with backend APIs
• Implement offline mode and data synchronization
• Integrate payments, subscriptions, and in-app purchases
• Optimize app performance and stability
• Publish and maintain apps in the App Store and Google Play
• Work iteratively after release to improve UX, conversion, and retention

Skills we’re looking for

• Experience developing for iOS (Swift) and/or Android (Kotlin)
• Experience with React Native is a strong plus
• Understanding of mobile app architecture (MVVM, Clean, Redux)
• Experience with APIs, authentication, and security
• Experience publishing and updating apps in app stores
• Experience with push notifications and deep links
• Ability to write clean, maintainable code
• Ability to use AI tools to speed up development: code generation, refactoring, testing, and research (with mandatory quality checks before production)
• Git, pull requests, responsibility, and strong communication skills

What you get

• Fully remote work
• Flexible schedule
• International projects
• Fast MVP launches
• Ongoing product support and development after release
• Long-term projects instead of one-time tasks
• Small, strong team with minimal bureaucracy
• Professional and income growth

If you like fast launches and improving products after release, message us.

We are a development studio that launches digital products fast.

We build MVPs in 3–6 weeks and create services, web and mobile applications, and internal systems for clients from Europe, the USA, and Asia.

We work remotely, stay flexible, and focus on results.
We launch products and continue developing them together with our clients.

If you work in IT and want to build real products and see fast releases — you’re welcome to join us.

Who we’re looking for

 
Backend Developer (Middle+)

Focus on backend development and system architecture. Our typical tech stack:

• Node.js, NestJS, Express
• PostgreSQL, MongoDB
• ORM/ODM: Prisma, Mongoose
• API: REST, sometimes GraphQL
• Auth: JWT, OAuth, RBAC
• Payments: Stripe, PayPal, and similar solutions
• Realtime: WebSockets, Redis Pub/Sub (when needed)
• Caching: Redis
• Tooling: ESLint, Prettier, Swagger / OpenAPI
• CI/CD: GitHub Actions, Docker, basic DevOps
• Cloud/Hosting: AWS / GCP / Vercel / Railway (depending on the project)
• Monitoring: Sentry, LogRocket, Prometheus (when needed)
• Security: rate limiting, validation, API protection
 

What you’ll do

• Design and implement backend systems for MVPs and production
• Develop APIs for web and mobile clients
• Design database schemas and optimize queries
• Integrate payments, authentication, roles, and subscriptions
• Ensure system stability, security, and scalability
• Work with queues, caching, and background jobs
• Maintain API documentation
• Improve performance and reliability after launch

Skills we’re looking for

• Strong experience with Node.js, NestJS, and/or Express
• Experience with PostgreSQL and MongoDB
• Solid knowledge of Prisma and ORM concepts
• REST API design and understanding of backend architecture
• Experience with authentication, roles, tokens, and security
• Query optimization, indexing, and transactions
• Understanding when to use monoliths vs microservices
• Ability to use AI tools to speed up development: code generation, refactoring, testing, research (with mandatory quality checks before production)
• Git, pull requests, code reviews, and responsibility for results

What you get

• Fully remote work
• Flexible schedule
• International projects
• Fast MVP launches
• Long-term product development after release
• Ongoing projects instead of one-time tasks
• Small, strong team with minimal bureaucracy
• Professional and income growth

If you like fast launches and improving products after release, message us.

Community Manager (iGaming Affiliate Network)

We are looking for a proactive Community Manager to help build, grow and scale our iGaming affiliate network and technology product through dedicated communities.

This role is about communication, networking and community development: representing the brand, increasing platform awareness, attracting affiliate partners and supporting community activity.

The position is ideal for those who want to develop in the iGaming and affiliate industry and see the direct result of their work. Strong performance = rapid career and financial growth.

🔥 Main tasks

• Promoting the affiliate network and technology product in industry communities

• Building and maintaining a community in Telegram, Discord, forums, LinkedIn and profile chats

• Active interaction with affiliate partners and potential customers: answering requests, supporting discussions, updates

• Creating and publishing community content: announcements, product updates, educational posts, promos

• Supporting onboarding and activating new affiliates from community channels

• Representing the brand in external iGaming and affiliate communities, online events and discussions

• Collecting feedback from the community and transferring insights to the product, marketing and affiliate teams

• Supporting the launch of new features, tools and promotional campaigns

• Coordination with affiliate managers, marketing and product to coordinate communication

• Tracking community growth and engagement, participating in basic analytics

✅ Requirements

• Strong written and verbal communication skills

• Experience or strong interest in community management, digital marketing or affiliate marketing

• High interest in iGaming, affiliate networks and technology products

• Confident online communication and relationship building skills

• Good organizational and time management skills

• Proactivity, initiative and ability to work autonomously

• Willingness to work in a fast-paced, performance-driven environment

• English is a must; Ukrainian and/or Russian is a big plus

💼 We offer

• Work with an international iGaming affiliate network and technology product

• Direct influence on the growth of the brand and platform

• Practical experience in one of the most dynamic digital industries

• Access to global affiliate communities and markets

• Performance-driven environment with rapid career and financial growth

• A supportive team, training and real prospects for long-term development

We at Sigma Software are looking for a skilled Senior Data Engineer to join an exciting short-term project with a US-based customer. This is a remote position, offering you the flexibility to work from anywhere while contributing to a high-impact data platform.

In this role, you will take ownership of designing and optimizing the data foundation for an automated storage capacity forecasting platform. You’ll work with modern technologies, collaborate with experienced engineers, and have the opportunity to influence both technical and process decisions.

Why join us? At Sigma Software, you’ll work in a culture that values innovation, encourages knowledge sharing, and offers the chance to make a real impact on projects used by thousands of businesses worldwide.

CUSTOMER
Our customer is ConnectWise — a US-based software company providing business automation solutions for Managed Service Providers (MSPs). ConnectWise offers a suite of tools for IT service management, cybersecurity, remote monitoring, and business process automation. Their solutions are used globally by thousands of MSPs to streamline operations, improve service delivery, and enhance security for small and medium-sized businesses (SMBs).

PROJECT
The project focuses on building an automated storage capacity forecasting platform for MSPs. The platform will model historical infrastructure data, enable predictive insights, and support lifecycle planning for hardware and storage resources.
It will integrate PostgreSQL, Python-based ETL pipelines, and PowerBI analytics to deliver accurate capacity forecasts and actionable reports for an 18-month planning horizon. The work environment encourages technical ownership, process improvement, and collaborative problem-solving with the customer’s engineering team.

Project duration is 3-4 months

RESPONSIBILITIES

• Design and optimize PostgreSQL data models for historical capacity and lifecycle tracking
• Build and maintain robust ETL pipelines using Python for structured and semi-structured (JSON) data
• Aggregate and structure data by Region, Node Type, and time dimensions
• Support time-series analysis and capacity forecasting use cases
• Develop and enable PowerBI datasets, models, and reports based on clean, reliable data
• Ensure data quality, performance, and scalability across the pipeline
• Translate infrastructure and business requirements into scalable data solutions

• Collaborate closely with software developers and stakeholders on end-to-end data workflows

   

REQUIREMENTS

• At least 5 years of experience as a Data Engineer or in a similar data-focused role
• Strong proficiency in SQL and relational databases, preferably PostgreSQL
• Solid experience with Python for data transformation and pipeline development
• Hands-on experience working with JSON and semi-structured data formats
• Proven track record of building and optimizing ETL processes
• Practical experience with PowerBI, including dataset modeling and report creation
• Experience working with time-series and historical datasets
• Strong understanding of data modelling principles for analytics and forecasting

• Upper-Intermediate level of English 

   

WILL BE A PLUS:

• Experience with Kibana or other BI/visualization tools
• Familiarity with monitoring, infrastructure, or capacity planning data
• Exposure to forecasting techniques or growth trend analysis
• Experience integrating data from metrics and inventory systems