Jobs at Djinni

On behalf of our Client, Mobilunity is looking for a Ruby on Rails engineer to join our client’s distributed engineering team.
You will work on scalable cloud-native services, modern frontend applications, and a data-driven analytics platform supporting a global product used across multiple regions.

This is a hands-on role for an engineer who enjoys building microservices, designing reliable cloud infrastructure, and working across the full stack.

Must have skills:

- 4+ years of experience
- Ruby on Rails monolith on Heroku,
- Heroku
- jQuery frontend

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Summary

We are looking for a Lead Generation Manager to join our team for a long-term freelance role. You will be responsible for identifying and qualifying potential clients, initiating first contact, and nurturing leads to support our sales pipeline.

Responsibilities:
Research and identify potential clients across various channels (LinkedIn, Upwork, etc.)
Create and manage outreach campaigns
Qualify leads and maintain CRM record
Work closely with the sales team to hand off warm leads
Analyze and optimize lead generation strategies

Requirements:
Proven experience in lead generation or sales outreach
Familiarity with freelancing platforms, especially Upwork, is a big plus
Strong communication skills in English (B2–C1)
Located in LATAM time zones
Self-driven, proactive, and detail-oriented

What We Offer:
Long-term collaboration (6+ months)
Flexible working hours
Remote work
Friendly and supportive team

Who we are:
Selesa offers IT outsourcing, specialist out-staffing, and project management services to enhance business operations. We focus on providing skilled professionals for IT needs, including development, security consulting, and business development. Selesa also manages sales, account management, and human resources to support company growth. Our services are known for efficiency, quality, and strong communication, making us a trusted partner for businesses looking to streamline and secure their IT infrastructure. Originated in Vilnius, Lithuania, we cater to global clients.

Who we are looking for:

We’re looking for a Junior Security Operations Assistant, working alongside experienced professionals to protect our clients from cyber threats. In this role, you’ll be at the forefront of defending our clients’ networks, gaining hands-on experience, and contributing to a safer digital landscape. 

Responsibilities

• Assist with daily security monitoring and SOC activities
• Review security alerts and escalate issues when required
• Help with log collection and analysis
• Support incident documentation and reporting
• Assist with vulnerability tracking and follow-ups
• Help maintain security and ISO 27001 documentation
• Support internal audits, evidence collection, and basic security tests
• Follow security policies and procedures

Requirements

• Proficiency in English 
• Basic knowledge of Linux (command line, logs, permissions)
• Basic understanding of cybersecurity concepts (phishing, malware, attacks)
• Awareness of SOC operations and incident escalation
• Basic understanding of networking concepts (ports, protocols, firewalls)
• Willingness to learn security tools and processes
• Good attention to detail and documentation skills
• Junior / Entry-level
• 0–2 years of experience in IT, SOC, or cybersecurity-related roles
• Education, training, or internships in IT/security are acceptable
• Strong attention to detail and teamwork skills.

• Ability to meet deadlines in a fast-paced environment

   

Nice to Have 

• Basic scripting (Bash or Python)
• Exposure to SIEM or endpoint security tools
• Familiarity with security frameworks
• Entry-level security certifications (e.g., Security+)

What we offer:

• Fully remote position with a flexible schedule
• Long-term opportunity with potential for financial and career advancement

• Supportive and positive work culture, collaborating with like-minded teammates

   

When submitting your application, please make sure to include your responses to the following screening questions in your COVER LETTER:

1. Please explain to us your level of spoken/written English. Just rank it from 1 to 10, where 10 means a Native Speaker; 8-9 means a Near Native Speaker; 6-7 means Fluent Speaker; under 6 any further levels.
2. How would you approach assessing and mitigating the risks associated with a new software or system implementation?
3. What methods or tools do you use to stay updated with the latest cybersecurity threats and trends?
4. What are your Monthly salary expectations for a long-term, full-time position (if we consider 40 hours a week)?

Mobilunity is looking for a Node.js/Express Engineer to join our client’s distributed engineering team.
In this role, you will contribute to the development of scalable cloud-native services, modern web applications, and data-driven solutions used by customers across multiple regions.

This position is ideal for an engineer who enjoys building reliable backend systems, working with AWS-native architectures, and collaborating across the full product stack.

Must have skills:

4+ years of experience
- Node.js/Express
- Vue
- MongoDB Atlas
- Redis
- Stripe
- Intercom

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
  
   

About Us
At Huuray, we make gifting smarter — helping companies and individuals send digital gift cards and rewards across the world. We’re growing fast and are now looking for an experienced .NET Developer to join our team and help us build secure, scalable, and
high-performance backend solutions that power our platforms. We already have talented team members based in Kyiv, and we’re excited to expand our presence by adding another skilled backend developer to collaborate closely with them. 

What You’ll Do
• Design, develop, and maintain backend services and APIs for our gifting and rewards
platforms.
• Collaborate closely with the frontend and design teams to deliver complete, high-quality
solutions.
• Write clean, efficient, and testable code following best practices and coding standards.
• Integrate with third-party APIs, databases, and external systems.
• Help perform QA testing of final product releases to maintain quality and reliability.
• Optimize system performance, scalability, and security.
• Participate in code reviews and contribute to continuous improvement processes.

Your Tech Toolbox
• .NET / .NET Core
• C#
• RESTful APIs
• Entity Framework
• SQL Server or similar relational databases
• Version control (Git)
What We’re Looking For
• 3+ years of professional experience as a .NET Developer.
• English Speaking/Writing.
• Strong skills in C#, .NET Core, and API development.
• Solid understanding of relational databases (SQL Server, PostgreSQL, or similar).
• Experience building and consuming REST APIs.
• Knowledge of authentication, authorization, and security best practices.
• Comfortable working in Git-based environments and agile teams.
• Strong problem-solving skills and attention to detail.

Nice to Have
• Familiarity with JavaScript/Next.js for full-stack collaboration.
• AI experience on coding level.
• Understanding of Microservices architecture.
• Experience with Azure Functions.
• CI/CD pipelines and automated deployment tools.

Why Join Us
• Work remotely with flexibility, preferably based around Kyiv.
• Join a company that already has team members in Kyiv, making collaboration seamless.
• Be part of a dynamic, fast-growing international company.
• Help build a product that brings joy to people around the world.
• Competitive compensation and a collaborative, idea-driven environment.

About Us
At Huuray, we make gifting smarter — helping companies and individuals send digital gift cards and rewards across the world. We’re growing fast and are now looking for an experienced Frontend Developer to join our team and help us craft beautiful, scalable, and
high-performance user interfaces across our platforms. We already have talented team members based in Kyiv, and we’re excited to expand our presence by adding another skilled developer to collaborate closely with them.

What You’ll Do
• Develop and maintain responsive, high-quality web applications for our gift and reward
platforms.
• Work closely with our design team and backend developers to build seamless, user-focused
solutions.
• Collaborate with product managers to create exceptional user experiences.
• Implement reusable, testable components with modern frontend frameworks and libraries.
• Perform cross-browser and cross-device testing to ensure consistency and reliability.
• Help perform QA testing of final product releases to maintain quality and stability.
• Optimize performance and ensure accessibility compliance.
• Participate in code reviews, and help define best practices and UI standards.

Your Tech Toolbox
• Next.js
• JavaScript (ES6+)
• HTML5 & CSS3
• jQuery / jQuery UI
• Version control (Git)
• Frontend frameworks/libraries
• Cross-browser and cross-device testing tools
What We’re Looking For
• 3+ years of experience as a Frontend Developer.
• English Speaking/Writing.
• Solid understanding of JavaScript and modern frameworks (ex. React, Next.js, Vue).
• Strong experience with responsive design and modern web standards (HTML5, CSS3, JS).
• Knowledge of performance optimization and accessibility best practices.
• Comfortable working with APIs and integrating data from backend systems.
• Proficient in Git-based workflows (branches, pull requests, code reviews).
• Passion for clean, maintainable code and user-friendly design.

Nice to Have
• Knowledge of Bootstrap and familiarity with .NET environments.
• Basic knowledge of Adobe packages (e.g., Photoshop, Illustrator, XD).
• Experience with TypeScript, GraphQL, or headless CMSs.
• Familiarity with analytics, SEO, and conversion optimization.
• Knowledge of AI solutions aimed for helping frontend work.

Why Join Us
• Work remotely with flexibility, preferably based around Kyiv.
• Join a company that already has team members in Kyiv, making collaboration seamless.
• Be part of a dynamic, fast-growing international company.
• Help build a product that brings joy to people around the world.
• Competitive compensation and a collaborative, idea-driven environment.

Mobilunity is looking for a Senior Java Developer to join our client’s distributed engineering team.
In this role, you will contribute to the development of scalable cloud-native services, modern web applications, and data-driven solutions used by customers across multiple regions.

Must have skills:

• 4+ years of professional software development experience
• Strong backend expertise in Java and Spring Boot
• Experience integrating streaming/event platforms such as Kafka or Kinesis
• Familiarity working alongside modern frontend frameworks (Vue, Angular, or React)
• Solid understanding of microservices, REST APIs, and distributed systems
• Experience working in cloud environments (preferably AWS)
• Strong problem-solving skills and ability to collaborate in remote teams
• Upper-intermediate English level or higher

Nice to have skills:

• Experience with CI/CD pipelines and infrastructure as code
• Knowledge of Docker and Kubernetes
• Background in high-load, real-time, or data-intensive systems
• Experience working in international product environments

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

We’re looking for an Applied AI Engineer who combines strong ML fundamentals with the discipline of improving production AI systems through metrics, evaluation, and iteration.

Details:
Senior AI/ML Engineer, ideally 5 years of experience. Ready to consider candidates starting with 3 years of experience, but they must be very strong in AI/ML.
Strong proficiency in English (Upper-intermediate level or Advanced)
Full-time
Location: any
Start: ASAP!

The role in a nutshell
You’ll work on improving production AI systems through evaluation, experimentation, and system design.

A large part of the role involves:

diagnosing failures in agent workflows
designing evaluation metrics and KPIs
improving system prompts and agent behavior
running structured experiments and measuring impact
You won’t be working in isolation on research projects — you’ll be improving systems that real users depend on.

Rough responsibility breakdown:

AI evaluation and KPI design — ~30%
Prompt and agent system design — ~30%
ML systems (recommendation, optimization, etc.) — ~30%
Engineering integration — ~10%

What you’ll work on:

AI evaluation and system quality

Design evaluation strategies for LLM and agent workflows
Create metrics and KPIs for AI system performance
Build and maintain evaluation datasets
Debug production AI failures systematically
Compare system behavior against baselines
This is a core responsibility of the role.

Multi-agent AI systems

Improve agent orchestration and workflows
Diagnose failures across agent pipelines
Refine system prompts and agent interactions
Improve reliability, latency, and response quality of ML and AI systems

You’ll contribute to areas such as:

Recommendation systems (ranking and personalization)
Itinerary optimization and constraint-based planning
LLM-based reasoning systems
Optional: computer vision pipelines
Depth in one of these areas is more important than superficial experience in all of them.

Engineering collaboration
We use:

Golang (primary production language)
Python when necessary for ML workflows
Postgres, Redis, and internal services
You don’t need to be a Go expert on day one, but you should be comfortable reading and modifying production code.
Backend engineers handle infrastructure-heavy service development — your focus is on AI system behavior and correctness.

What we’re looking for
Must-haves
1. Strong AI/ML fundamentals
You understand the theory behind what you build and can choose appropriate methods for a problem.
Examples:

evaluation metrics (precision/recall/F1/etc.)
ranking and recommendation concepts
embeddings and similarity
experimentation methodology

Not required:
academic publications
advanced theoretical math
large-scale model training experience

2. Evaluation-driven mindset You:

think in metrics and baselines
design experiments instead of guessing
measure system improvements quantitatively
debug failures methodically
This is the most important signal for the role.

3. Experience with LLM systems you’ve worked with:

prompt design
agent workflows
evaluation of LLM outputs
production LLM integrations

4. Ability to ship production systems
You can:

turn ideas into working systems
iterate based on results
balance exploration with delivery

5. Programming ability You’re comfortable writing production code in at least one language (Python, Go, or similar) and learning others when needed.

Strong signals (nice to have)
Experience improving an AI system after deployment
Recommendation systems or ranking experience
Optimization or constraint-based systems
Computer vision experience
Experience building evaluation frameworks
Golang experience
Startup or small-team engineering experience

About Digis
Digis is a European IT company with 200+ specialists delivering complex SaaS products, enterprise solutions, and AI-powered platforms worldwide. We partner with clients from the US, UK, and EU to build long-term development teams and provide transparency, stability, and continuous professional growth for all our engineers.


About the Project
Our Client is developing a large-scale logistics SaaS platform focused on optimizing and automating logistics processes, especially in the last-mile domain. The product is already live and is currently scaling and expanding its functionality.
You’ll join a stable product environment and work on real-world high-load challenges with strong engineering ownership and meaningful influence on architecture and technical decisions.


Requirements

• 5+ years of commercial experience with Java
• Сommercial experience with MongoDB or any non-relational database
• Strong soft skills: communication, ownership, ability to work closely with product
• Upper-Intermediate+ English level
  
  
  Responsibilities
• Develop and scale backend services for the logistics SaaS platform (Java, microservices)
• Drive architectural improvements and performance optimizations
• Collaborate with product managers to translate business requirements into technical solutions
• Design and implement complex platform features end-to-end
• Participate in code reviews and architectural discussions
  
  We Offer
• 20 paid vacation days per year
• 5 paid sick leaves per year (no medical documents required)
• Personalized development plan + training compensation
• English courses compensation
• Work equipment if needed (PC/laptop/monitor)
• Flat, transparent internal communication
• Ability to switch between projects and technologies inside Digis
• Full accounting and legal support
• Free corporate psychologist sessions

Mobilunity is looking for a Senior Java Developer to join our client’s distributed engineering team.
In this role, you will contribute to the development of scalable cloud-native services, modern web applications, and data-driven solutions used by customers across multiple regions.

This position is ideal for an engineer who enjoys building reliable backend systems, working with AWS-native architectures, and collaborating across the full product stack.

Must have skills:

• 4+ years of professional software development experience
• Strong experience with Java and frameworks such as Spring or Dropwizard
• Solid frontend development skills with Angular / JavaScript
• Hands-on experience with AWS cloud services and cloud-native design
• Experience working with Redshift and PostgreSQL or similar databases
• Understanding of microservices architecture, REST APIs, and distributed systems
• Strong problem-solving skills and ability to work effectively in remote teams
• Upper-intermediate English level or higher

Nice to have skills:

• Experience with CI/CD pipelines and infrastructure as code
• Familiarity with Docker and Kubernetes
• Background in high-load or data-intensive systems

Experience collaborating with international product teams

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

On behalf of our Client, Mobilunity is looking for a Python Developer.

to join our client’s distributed engineering team.
You will work on scalable cloud-native services, modern frontend applications, and a data-driven analytics platform supporting a global product used across multiple regions.

This is a hands-on role for an engineer who enjoys building microservices, designing reliable cloud infrastructure, and working across the full stack.

Must have skills:

• 4+ years of professional software engineering experience
• Strong backend experience with Python (Flask) and Node.js microservices
• Solid frontend development skills with Vue.js / Nuxt
• Hands-on experience with AWS cloud services and multi-region deployments
• Experience working with Snowflake, dbt, and Looker or similar analytics tools
• Understanding of microservice architecture, REST APIs, and distributed systems
• Strong problem-solving skills and ability to work in a remote team environment
• Upper-intermediate English or higher

Nice to have skills:

• Experience with CI/CD pipelines and infrastructure as code
• Knowledge of Docker/Kubernetes
• Background in data platforms or analytics engineering
• Experience working in international product teams

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

📢 Hiring: Web App Designer (with coding skills in css/html/c#)

Company: Kennel Connection

Salary: $2,000–$2,800 USD/month

Job Type: Full-time, Long-term

Location: Remote (Ukraine preferred)

Timezone: 4+ hours daily overlap with EST

English: B2 or better

Direct Hire – Product Company (NOT outsourcing)

About Us:

Kennel Connection is a US-based SaaS company serving pet care businesses. We are a product company, not an agency — we own and develop our software in-house and are building a long-term team.

Role Overview:

We are looking for a UI/UX Designer who can also implement their designs using HTML, CSS, and jQuery. This is a design-first role: your ability to create clean, user-friendly layouts is more important than your ability to write complex JavaScript. We work in a classic stack — no React, no Angular.

What You’ll Do:

• Design user interfaces and flows for our web-based product
• Create wireframes, mockups, and final UI assets
• Implement your designs directly in:
  • HTML / CSS / SCSS
  • jQuery
  • Razor (.NET view engine)
• Collaborate with product and engineering teams
• Gradually help modernize and improve the overall UX

What We’re Looking For:

• 3+ years of UI/UX design experience
• A portfolio showcasing web app design work
• Ability to implement layouts in HTML/CSS/jQuery
• Comfortable working in an older codebase (no React/Angular)
• Strong attention to UX detail and usability
• English level B2 or higher
• Looking for a stable, long-term role

We Offer:

• Long-term role in a growing SaaS company
• Full ownership of UI/UX across the product
• Friendly, collaborative team
• Salary growth based on impact
• Flexibility and stable working hours

🇺🇦 Ми дуже доброзичлива компанія до України.
🇺🇦 Підтримуємо талановитих українських розробників.

We are a US-based product company (NOT outsourcing).
Long-term stable role, real feature ownership for a talented Full Stack developer

Tech stack:
Richly featured web app with varied work 
ASP.NET MVC/Core, C#
css, Razor pages, jQuery
SQL Server

💵 Salary: $2,700–$3,500 USD / month
📈 Raises for demonstrated skills and performance
🕐 4 hours daily overlap with EST (flexible)
💼 Direct hire

Requirements:
• 3+ years commercial .NET experience
• English level B2 or better
• Looking for a long-term, rewarding career — not a short project or agency work
 

🇺🇦 Ми дуже доброзичлива компанія до України.
🇺🇦 Підтримуємо талановитих українських розробників.

Clickdealer is entering the influencer marketing space and building a brand-new Influencer Department. 
We are looking for an experienced Head of Influencer Management Team to lead and scale our creator operations. This is a strategic and hands-on leadership role for a professional who understands the influencer ecosystem, builds strong partnerships, and drives measurable campaign performance.

You will oversee influencer managers, develop data-driven strategies, and ensure world-class execution across emerging and major platforms such as TikTok, Twitch, Kick, X, and Instagram.

If you are passionate about social media, love spotting trends before they go mainstream, and thrive in a dynamic, high-growth environment—this role is for you.

What You’ll Do

- Lead and manage the Influencer Management Team

- Develop and execute data-driven influencer marketing strategies

- Build long-term relationships with creators and talent managers

- Oversee multiple campaigns across different platforms and regions

- Set performance targets and KPIs for the team

- Analyze campaign results and optimize performance

- Identify trends and provide market insights

- Ensure smooth communication between influencers, managers and clients

What We’re Looking For

- 2+ years of hands-on experience in influencer marketing in a similar role

- Proven experience working with influencers in different niches

- Strong understanding of platforms: TikTok, Twitch, Kick, X, Instagram

- Experience leading and managing a team

- Ability to handle multiple projects simultaneously

- Excellent negotiation, communication, and relationship-building skills

- Data-driven mindset with strong analytical skills

- Passion for social media, creators, and emerging trends

- English: Upper-Intermediate or higher

Why Join Us?

- Work in a fast-growing, innovative influencer marketing agency

- Lead exciting global campaigns and emerging creator projects

- Career growth and leadership development opportunities

- Collaborative, creative and high-energy team culture

- Real impact on brand and creator success

We’re hiring a User Acquisition Manager who knows how to grow web-to-app subscription funnels and scale performance across global markets. You’ll own paid acquisition on Meta end-to-end: from launch and iteration to budget expansion and stable ROI/ROAS growth. We’re looking for someone who thinks in hypotheses, numbers, and funnels — and improves results through constant testing.

What you’ll do

• Build, launch, and scale performance campaigns on Meta and Google

• Continuously optimize campaigns to improve ROI/ROAS and hit efficiency targets

• Own key performance metrics (CPA, spend, conversion rates, etc.) and drive them to plan

• Manage and redistribute budgets based on results and marginal returns

• Track performance via analytics tools and use insights to improve the acquisition strategy

• Run systematic A/B tests (audiences, creatives, landing flows, bidding, funnel steps)

• Stay on top of market trends, new ad formats, and competitor activity

• Work closely with the Marketing team and the co-founder on strategy and execution

•  propose ideas for new creatives, angles, and new growth hypotheses

What we expect (must-have)

• 3+ years in user acquisition/performance marketing for mobile or web products, ideally with subscription monetization

• Hands-on experience with web-to-app acquisition (quiz → subscription conversion → instal), this is required

• Proven track record of managing large budgets in Meta Ads (from $200k+) with measurable outcomes

• Strong understanding of performance metrics and unit economics: CPM, CTR, CPC, CVR/CR, CPA, ROAS, ROI, LTV, CAC, churn, retention — and how they connect to business results

• Experience with analytics and reporting tools such as Google Analytics, Amplitude, Tableau

• English Intermediate+ (written and spoken)