Jobs at Djinni

Impulse is a brain training app that helps people keep their brains sharp with bite-sized fun games and logic puzzles. Impulse is the world’s most downloaded app in the Brain Training category with over 100 million downloads. The app is trusted by users worldwide, with a 4.7 rating on the App Store, and has been featured as App of the Day in over 50 countries, including the UK, Canada, and Australia.

Impulse is a part of Headway Inc, a global tech company that revolutionizes lifelong learning by creating digital products for over 150 million users worldwide. Our mission is to help people grow. We’re proud to be ranked 4th among the World’s Top EdTech Сompanies by TIME magazine.

The core of our achievements is our team. That’s why, together with Iryna, Creative Tech Lead at Impulse, we’re looking for a Motion Designer to join our team.

This job is perfect for you if you want to:

• Make high-impact ad creatives seen by hundreds of thousands of users daily, test hypotheses with real performance data, and impact business growth;
• Work with cutting-edge AI tools. You’ll have the resources to test bold, trend-driven creative concepts and access to the latest AI tools;
• Keep improving and growing. We’re all about evolving, rethinking, and aiming higher together. Also, you will participate in team discussions and understand all aspects of the business (e.g., marketing, building and improving business processes, etc).

What you will do:

• Produce engaging 2D animated ad creatives based on briefs from the creative team, designed to differentiate the product from competitors;
• Collaborate closely with creative marketers, actively contributing to idea generation, discussions, and brainstorming sessions;
• Enhance creatives using animation, visual and sound effects, subtitles, and a variety of AI tools to maximize emotional impact;
• Continuously iterate on video creatives using performance metrics such as CTR, CPA, and hook rate to improve results;
• Research, test, and implement new tools and automation solutions to optimize production workflows and elevate creative quality.

What do you need to join us:

• 1–2 years of commercial experience creating 2D animated videos or handling video editing tasks;
• Strong hands-on proficiency in After Effects for motion design and animation work;
• Basic working knowledge of Illustrator, Figma, Premiere Pro;
• Practical experience using AI tools in daily work, such as ElevenLabs, HeyGen, Sora, NanoBanana, Freepik, or similar solutions;
• Solid understanding of animation and editing principles with the ability to combine visuals, motion, and sound into a competitive video product;
• English proficiency at B1+ level, sufficient for research and working with content;
• Strong time management skills with the ability to plan workload effectively and consistently meet deadlines;
• Readiness to take ownership, responsibility, and make a tangible impact on the product;
• Alignment with the values of our team.

What do we offer:

• Work within an ambitious team on a socially impactful education product;
• An office with a reliable shelter, generators, satellite internet, and other amenities;
• Access to our corporate knowledge base and professional communities;
• Personal development plan;
• Compensation for English language learning, external training, and courses;
• Medical insurance and full sick leave compensation;
• Company doctor and massage in the office;
• Sports activities: running, yoga, boxing, and more;
• Corporate holidays;
• Supporting initiatives that help Ukraine.

Working schedule

This is a full-time position with a hybrid remote option. It means that you can decide for yourself: whether you want to work from the office, remotely, or combine these options.

Are you interested?

Send your CV!

Join Whitepay — Innovate the Future of Payments!

At Whitepay, we’re revolutionizing how businesses and individuals interact with crypto and fiat payments. As part of the WhiteBIT ecosystem, we provide seamless, secure, and scalable payment solutions that bridge traditional finance with blockchain-powered transactions.We’re looking for passionate innovators to help us redefine digital payments worldwide. If you’re excited about fintech, crypto, and building cutting-edge financial solutions, this is your chance to make a real impact!

Why You’ll Love Working Here:
🚀 Shape the Future — Build next-gen payment solutions at the intersection of crypto and finance.
💡 Innovate & Create — Your ideas will help businesses integrate digital assets effortlessly.
🌍 Global Impact — Be part of a team driving financial innovation worldwide, shaping the future of payments across industries and borders.
🎯 Tech-Driven Culture — Join a team of fintech and blockchain enthusiasts pushing the industry forward.

Ready to change the future of payments? Apply now and let’s build something game-changing together!

Requirements:

— 2–5 years of experience in Customer Support / Technical Support / Customer Success in crypto related IT product or SaaS company
— Experience working with B2B customers and handling complex technical or product-related issues
— Strong understanding of software products, platforms, APIs, and integrations
— Hands-on experience with ticketing systems (Zendesk, Jira Service Management, or similar)
— Ability to troubleshoot issues, analyze logs or data, and clearly document bugs and incidents
— Experience collaborating with Product, Engineering, and Operations teams
— Understanding of SLAs, support KPIs, and service-quality metrics
— Upper-intermediate written and verbal English communication skills (B2+ level)
— Ability to explain technical concepts to non-technical users
— Strong customer-oriented mindset and conflict-resolution skills
— High level of ownership, responsibility, and attention to detail
— Ability to prioritize tasks and work effectively in a fast-paced environment
— Stress-resistant and comfortable handling escalations
— Experience creating and maintaining support documentation and knowledge bases

Responsibilities:

— Assisting B2B clients with product inquiries and technical issues
— Assisting end users with troubles & payment issues
— Troubleshooting and resolving technical problems promptly.
— Creating and maintaining support documentation.
— Escalating complex issues to internal teams for resolution.
— Gathering and relaying client feedback for product improvement.
— Monitoring and managing support tickets within agreed SLAs.
— Staying updated on product.
— Collaborating with internal teams to ensure a seamless customer experience.

Would be a plus:

— Experience with compliance-driven environments (KYC/AML)
— Working with international customers

Work conditions:

Immerse yourself in Crypto & Web3:
— Master cutting-edge technologies and become an expert in the most innovative industry.
Work with the Fintech of the Future:
— Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
— Gain unique experience and be part of global transformations.
Drive Innovations:
— Influence the industry and contribute to groundbreaking solutions.
Join a Strong Team:
— Collaborate with top experts worldwide and grow alongside the best.
Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions, and an inspiring environment to help you thrive.
— 24 calendar days of paid leave.
— Additional days off for national holidays.

We provide challenging tasks that offer continuous growth opportunities for everyone. We’ve consistently embraced development and the advancement of our colleagues, ensuring work is always engaging. Our team is prepared to offer support, share expertise, and lend a helping hand when needed.

(Freelance / Part-time)

We’re looking for a Graphic Designer to create high-performing visual creatives for our global digital products.

This is a freelance, project-based role with direct impact on marketing performance — perfect for someone who works fast, follows brand guidelines precisely, and understands the difference between “beautiful” and “effective”.

🔥 What You’ll Do

• Create advertising creatives for performance campaigns (banners, carousels, covers)
• Adapt materials across multiple formats and platforms (Facebook, Instagram, etc.)
• Prepare style frames and key visuals for motion designers
• Follow brand guidelines with zero deviations
• Ensure pixel-perfect execution (sizes, formats, exports, no technical errors)
• Self-check all deliverables before submission
• Participate in brainstorming sessions for future campaigns
• Organize and maintain clean file structure according to internal standards
• Actively use AI tools to generate backgrounds, textures, references, and concepts

✅ What We’re Looking For

• Up to 1 year (or 1+ year) of commercial design experience
• Strong Figma skills (Photoshop / Illustrator as additional experience)
• Experience creating paid social creatives (Facebook, Instagram)
• Solid understanding of composition, typography, and color theory
• Ability to work strictly within brand guidelines
• High level of accuracy and attention to detail
• Experience using AI tools in the creative workflow
• Portfolio with real commercial projects

• English level A1+
• Ukrainian — Native

Nice to have:

• Experience in branding (brand identity development or support)
• Experience preparing print materials (CMYK, bleed, margins, print specs)
• Basic After Effects skills or experience preparing style frames for motion

🎯 Key Metrics (KPIs)

• Creative performance (CTR, CPC improvement)
• Speed & quality of delivery
• Accuracy and technical correctness
• Brand consistency across all materials

🌍 What We Offer

• Project-based freelance collaboration
• Remote-first with flexible schedule
• Access to paid tools (Figma, Freepik)
• Clear tasks and structured feedback for every project
• Opportunity to grow into a long-term collaboration

🌟 Our Culture & Values

• Performance matters — design must drive results
• Attention to detail — precision over rush
• Clear communication and fast feedback
• No micromanagement — responsibility for your output
• We respect deadlines and expect the same

Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are establishing an R&D centre in Kyiv, and are looking for top talents to join our team.
 

As a Senior PHP Engineer, you will dive into the complex but rewarding world of Sports and Online gaming, integrations, real-time calculation, scrapping data, and reporting, all at a massive scale.
 

TECHNOLOGY STACK: PHP 8, Symfony 6, Node.js, API REST, MongoDB, MySQL, Kafka, Docker, Kubernetes
 

RESPONSIBILITIES

• Participate in the design and decision-making of technical solution implementation
• Troubleshoot, analyze, provide workarounds and resolve various software problems
• Mentor and train new team members
   

REQUIREMENTS

• 5+ years experience in web application development
• Advanced architecture understanding both on theoretical and practical levels
• Deep knowledge of PHP programming
• Working experience with the Symfony framework
• Knowledge of the entire web stack and how each part impacts performance and reliability
• Exhaustive knowledge of database design and implementation
• Design and business insight
• Commitment to quality, performance, continuous improvement, and efficiency
• Analytical mindset and good problem-solving skills
• Experience in taking ownership
• Upper-intermediate level of English
   

NICE TO HAVE

• Gaming and sports industry experience
• NodeJS, Redis
• Experience in web application security and performance tune-up
• ELK, Kibana
   

WHAT WE CAN OFFER YOU

• Modern office in Podil with an uninterruptible power supply and the Internet
• Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
• Public holidays
• Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
• Modern technical equipment
• English courses with native speakers
• Ukraine-based educational programs
• Sports activities reimbursement
• Corporate entertainments
• Happy hours on Fridays
• Gig contract support

Welcome to ApexTech 🙌 

We are looking for 🚀 Fullstack Developer 🚀 who enjoys learning, building, and switching between projects. 

Responsibilities: 

● Advanced Backend and Frontend developments (JavaScript / NextJS / ReactJS) 

● Mentor / Coach other team members 

● Code reviews and refactoring 

● Advanced problem analysis and solving in production 

● Bug fixing, follow-up and workaround, identification of pain points in the platform 

● Responsible for the efficiency of all the components in the infrastructure 

● Write technical specifications when needed 

● Automate and Optimize repetitive tasks 

Required skills: 

● 5+ years of experience in JavaScript fullstack development (NodeJS / NextJS / ReactJS) 

● Proficient in building SSR/SSG/ISR web applications. 

● Proficient in building and consuming APIs - Rest / GraphQL 

● Strong knowledge of accessibility (a11y) 

● Strong understanding of SEO best practises, semantic HTML and metadata 

● Familiar with Cloudflare for CDN, caching, security and performance optimizations. 

● Familiar with Cloud DevOps (AWS preferred) 

● Eye for detail and sensitivity for graphics and aesthetics 

● Adaptability and responsiveness 

● Great analytical skills 

● Fluent in English 

● Team-player 

Nice-to-have: 

● Experience with Python Backend Development (Django / FastAPI) 

● Experience with a Headless CMS (like Sanity / Contentful, or Strapi) 

● Experience using Tailwind CSS or CSS-in-JS solutions. 

● Experience using UI libraries (like RadixUI / HeadlessUI / MaterialUI) 

● Exposure to internationalization (i18n) in NextJS 

Interview process: 

1. Intro-call with the Recruiter. 

2. Technical Interview. 

3. Client Interview. 

What do we offer?

 💻 Full remote work and meetings for brainstorming. 

💡Freedom and flexibility. 

🚀A team of top experts and synergy of the entire organization. 

💸Competitive salary. 

🌿 Vacation and sick leaves. 

🙏Therapy sessions with our psychologist. 

📚Budget for professional development. 

💃Corporate events and team building.

L1 Support Engineer 

Company: DASH Financial Technologies 

About Us 

DASH Financial Technologies is a leading provider of advanced trading and order routing solutions in the US capital markets. We build high-performance, low-latency systems that support mission-critical trading operations. 

Role Overview 

We are looking for an L1 Support Engineer to join our team and provide first-line technical support for our trading and order routing applications. This role requires strong analytical skills, attention to detail, and the ability to work in a fast-paced, high-availability environment. 

We have 3 shifts, and coverage will be required for all 3 if needed.

Responsibilities 

• Monitor production systems and trading applications 
• Investigate and triage incidents and alerts 
• Perform initial troubleshooting and log analysis (Linux environment) 
• Escalate issues to L2/L3 or engineering teams when necessary 
• Communicate status updates to internal stakeholders 
• Document incidents, solutions, and procedures 
• Support deployment and configuration activities when required 

we have 3 shifts, and coverage will be required for all 3 if needed.

Required Skills 

• Basic to intermediate knowledge of Linux/Unix 
  (grep, tail, logs analysis, file operations, basic commands) 
• Basic understanding of SQL (running queries, checking data/logs) 
• Understanding of networking fundamentals (TCP/IP basics) 
• Strong analytical and problem-solving skills 
• Ability to work in a shift-based environment (if applicable) 
• Good communication skills 
• Intermediate level of English 
• we have 3 shifts, and coverage will be required for all 3 if needed.

Nice to Have 

• Experience in fintech / trading systems 
• Familiarity with FIX protocol 
• Experience with monitoring tools (e.g., Zabbix, Grafana, etc.) 
• Basic scripting knowledge (bash, Python) 

What We Offer 

• Remote or office-based work (Vinnytsia) 
• Flexible working hours 
• Professional growth within L2 / DevOps / Engineering paths 
• Modern hardware and equipment
• we have 3 shifts, and coverage will be required for all 3 if needed.

We’re looking for a Product Designer to shape, improve, and scale UX across our subscription-based mobile and web products for Tier-1 markets (US, UK, EU).

This is a high-impact role with direct influence on conversion, retention, and revenue — perfect for someone who thinks in metrics, tests hypotheses fast, and scales what works.

🔥 What You’ll Do

• Design UX/UI for mobile (iOS/Android) and web products
• Analyze product tasks together with PM and developers
• Create and validate 2–3 solution concepts before final execution
• Design full user flows, all states, and edge cases
• Prepare clean and structured handoff (components, specs, design system alignment)
• Support developers during implementation and participate in design QA
• Analyze post-release metrics and iterate based on data
• Actively use AI tools to improve speed, quality, and decision-making
• Collaborate closely with product, marketing, and development teams

✅ What We’re Looking For

• 1–3 years of experience in product companies or agencies
• Strong Figma skills (components, auto-layout, prototyping, Figma Make)
• Solid understanding of the full UX process — from problem to delivery
• Experience designing mobile and web interfaces
• Ability to read and interpret product analytics
• Strong attention to detail and structured thinking
• Portfolio with real product cases (problem → solution → impact)
• English level A1–B1
• Ukrainian — Native

Nice to have:

• Experience in subscription / SaaS / mobile products
• Understanding of A/B testing and growth mechanics
• Basic user research & usability testing experience
• Experience working with design systems
• Knowledge of accessibility standards (WCAG)
• Experience using AI across the product workflow

🎯 Key Metrics (KPIs)

• Conversion Rate — improve onboarding & key funnels
• Retention — increase product stickiness
• Feature Adoption — drive meaningful usage
• Design Delivery Speed & Quality

🌍 What We Offer

• Remote-first with flexible schedule
• Direct work with Design Lead and product team
• Real ownership — your decisions impact revenue
• Clear growth path to Middle/Senior Product Designer
• Access to paid tools (Figma, analytics, AI services)

🌟 Our Culture & Values

• People first — initiative and ownership matter
• Data-driven decisions — we test and measure
• No micromanagement — full responsibility for your direction
• Attention to detail — quality over speed
• Healthy work-life balance
• We build products we’re proud of

Join Mailtrap.io as a LinkedIn Expert. Mailtrap is a B2B SaaS platform trusted by more than 1 million users worldwide. We help teams test, optimize, and deliver emails with confidence, so their work runs smoothly every day.

Here, you’ll have the freedom and resources to bring your ideas to life, experiment, test, and see real impact.

Work fully remote, with minimal bureaucracy and mostly async communication, while being part of a strong, experienced team that values clarity, ownership, and quality.

If this sounds like your kind of place, we’d love to hear from you! 

What you will do

• Own and grow our LinkedIn presence, from strategy to execution
• Plan, create, and publish high-quality B2B content that reflects our brand, product, and business goals
• Manage and optimize LinkedIn pages to drive engagement, followers, and leads
• Grow and manage other social media and community platforms (X, Reddit, Quora) to expand reach
• Analyze content performance, test new formats, and adjust strategy based on insights
• Support colleagues' advocacy, helping team members and leaders share content effectively
• Collaborate closely with marketing, product, and other teams to ensure consistent messaging and positioning
• Track trends, audience behavior, and competitors to keep social presence relevant and effective

What we’re looking for

• Senior-level experience in social media and content marketing within a B2B SaaS environment 
• Proven, hands-on expertise in LinkedIn as a strategic marketing channel (strategy, content, analytics, optimization)
• Experience working with English-speaking markets (EU, US, global)
• Fluent English, both written and spoken
• Strong content writing skills (less AI, more human-like) 
• Analytical mindset and experience using metrics to optimize performance
• High ownership, critical thinking, and the ability to work independently in a fast-moving environment
• Excellent communication, collaboration, and presentation skills

Would be a plus

• Knowledge of X (Twitter) platform ins and outs, and the ability to grow it

WHAT YOU'LL BE WORKING ON

• Design and development of the core banking system and Internet acquiring service within the financial ecosystem
• Participation in product architecture design and query optimization
• Data handling: synchronization, transmission, and processing
• Implementation of new business logic in applications
• Work with metrics: integration, optimization, and monitoring. 

WHAT YOU NEED TO SUCCEED IN THIS ROLE

• At least 4-5+ years of experience in backend development, including 2+ years of production experience with Golang
• Deep knowledge of Golang and its ecosystem
• Solid understanding of multithreaded systems and concurrent programming principles
• Strong knowledge of SQL and experience working with relational databases
• Proven experience in developing and maintaining microservice architectures
• Strong understanding and practical application of software development principles: SOA, SOLID, KISS, DRY
• Experience in architectural design and readiness to propose and implement technical solutions
• Familiarity with Clean Architecture principles and Domain-Driven Design (DDD)
• Experience in fintech is a plus, but not required 
• Good written and verbal communication skills in English

OUR TECH STACK

• Go, PostgreSQL, Redis, DynamoDB, Kafka, RabbitMQ, gRPC 

WHAT WE OFFER

• An opportunity to make something great even greater, you can be the reason why we grow, develop, and become the best fintech company on the market!
• Career prospects - we are young, we have huge ambitions, and it is important that our employees grow with us 
• Work with coworkers who are passionate about their business
• Compensation that will fully correspond to the competence and knowledge, with yearly performance reviews
• Remote type of work

• 20 days of vacation time; bank holidays; Sick leaves; Additional birthday day off

   

You can find out more about our team, our values, and the unique ways we celebrate our successes here: https://fyst.com/culture 

#Fintech #SaaS #Go #FullyRemote 

About Us
We are a fast-growing and leading company in the AI Voice space for the iGaming industry. We replace inefficient manual processes with scalable, reliable, and high-performance AI technology. Our solutions are already used by 20+ brands across 8+ geographies. We are well-funded, ambitious, and building a team of top professionals.

About the Role

We are looking for an experienced SMS & VoIP Carrier Manager with a strong background in iGaming to join us on a part-time / hourly consulting basis.

This role is focused on improving the quality, stability, and performance of our SMS and telecom transmission channels across multiple GEOs. The ideal candidate has deep knowledge of carrier infrastructure, deliverability metrics, pricing models, and maintains an active network of reliable providers.

Key Responsibilities

• Audit and optimize current SMS and VoIP routing infrastructure
• Improve SMS deliverability and voice answer rates across target GEOs
• Develop and implement processes to enhance transmission quality
• Identify filtering issues and propose routing improvements
• Manage relationships with SMS and telecom providers
• Source and introduce high-quality direct carriers and aggregators
• Optimize cost-to-quality ratio across channels
• Provide ongoing strategic consulting through regular calls and performance reviews

Requirements

• Proven experience in iGaming working with:
  • SMS channels
  • Telecom / Voice
  • Email infrastructure
• Strong understanding of:
  • A2P vs P2P routing
  • Direct routes vs aggregators
  • GEO-specific compliance and regulations
• Deep knowledge of global SMS/VoIP providers and pricing structures
• Clear understanding of key metrics:
  • SMS Deliverability Rate
  • DLR (Delivery Reports)
  • Filtering & blocking mechanisms
  • Voice Answer Rate
  • Cost per Delivered Message
  • Throughput & latency
• Established network of carrier and routing providers
• Ability to conduct audits and provide actionable optimization strategies

Engagement Format

• Hourly / part-time consultancy
• Regular strategic sync calls
• Performance-focused collaboration
• Potential performance-based incentives for bringing strong providers

Nice to Have

• Experience working with high-risk or complex GEOs
• Background as Head of CRM, Telecom Lead, or Messaging Infrastructure Manager
• Hands-on experience scaling messaging operations in fast-growing iGaming or CPA environments

What we offer 

• Fully remote work format and flexible working hours.
• Competitive salary pegged to USD.
• 24 days of paid vacation (sick leave, national, religious, and company holidays).
• A friendly communication culture and transparent processes.
• Dynamic work environment.
• Opportunities for professional development and career growth.
• No micromanagement — just trust, ownership, and freedom to experiment.

Join a fast-growing European deep-tech startup developing advanced autonomy and perception solutions for next-generation UAV systems. We’re looking for a Forward Deployed Drone/Robotics Engineer to bring cutting-edge autonomy software from the lab to the field. 

In this role, you will integrate and deploy autonomy algorithms across a wide range of UAV platforms — from agile FPV drones to large fixed-wing aircraft. Acting as the crucial link between our autonomy software and the drone systems, you’ll work hands-on to ensure seamless integration and reliable performance in real-world environments.

You’ll collaborate with an international team of engineers and researchers across Europe, as well as local partners in Ukraine. Expect a dynamic mix of field testing, system integration, and close teamwork with both hardware and software specialists.

Your responsibilities will include:

• Acting as a key member of the engineering team responsible for deploying autonomy solutions across diverse UAV platforms.
• Developing robust interfaces between autonomy algorithms and drone flight controllers.
• Integrating and testing full-stack autonomy solutions on partner platforms, often in close collaboration with partner engineering teams.
• Providing structured feedback to the autonomy development team, based on observations from field tests and operational flights.
• Traveling to partner sites to work on-site and ensure the solutions function reliably in demanding real-world conditions ("in the dirt"). You will mostly be working with our Ukrainian partners.

What we expect from you

• Strong Proficiency in working in a fully terminal-based Linux environment without reliance on GUIs, shell scripting for automation and deployment tasks, Linux file system and command-line tools, and debugging system-level issues using the Linux terminal.
• Experience working with drone flight controllers such as Ardupilot, or PX4.
• Familiar with embedded Linux devices such as Raspberry Pi’s, NVIDIA Jetsons.
• Solid understanding of UAV components and hardware, including battery management and practical electronics, with hands-on experience. Ideally you have built, flown, and debugged a drone yourself
• Practical experience building and deploying Docker containers.
• Experience of both Python and C++ is a plus.
• A willingness to pick up and learn new concepts quickly and to self-acquire missing background knowledge.
• A high degree of autonomy, determination and grit in making cool tech work.
• Being comfortable travelling often in Ukraine and for extended durations (up to 3 weeks)
• Full time availability (40 hours) and work regularly on-site in Ternopil.
• A valid driver's license.

​​​​​​​
While having the perfect background is nice, if you are able to present evidence of outstanding engineering and execution capability we are interested in talking regardless. If you are the right fit, we believe in your ability to pick up the required background knowledge on the fly.

What we offer

• Competitive salary (level to be discussed individually based on interview results).
• 25 vacation days per year.
• Reimbursed travel expenses and company laptop.
• Working in an international, world-class team of engineers and entrepreneurs solving real-life problems with amazing technology.
• Large freedom in how you work and implement solutions, project ownership is incredibly important to us.
• The opportunity to take technical risks, to implement stuff the ‘right’ way and to iterate quickly with tight feedback loops. We are innovating, learning is to be expected.
• Responsibility over the things you implement, you are the expert on what you build.

Lobby X is a socially responsible business, a unique combination of the job platform and full-cycle recruiting agency, specializing in hiring top talents for government, business, tech, miltech, and progressive non-governmental organizations in Ukraine and globally.

About us

We build AI-powered solutions that solve real business problems. You’ll work with the latest technologies and implement production-grade AI features, including RAG pipelines, agentic and multi-agent workflows, and complex LLM-driven systems.

Responsibilities

• Solve engineering problems related to process automation, knowledge systems, and agentic / multi-agent architectures.
• Design, build, and maintain AI-powered features that go beyond basic LLM API calls.
• Develop backend services using Node.js (Express, Fastify, or NestJS).
• Implement and iterate on RAG pipelines (retrieval strategies, chunking, evaluation, quality improvements).
• Work with vector databases (pgvector, Qdrant, Pinecone, Weaviate).
• Integrate external APIs, payment systems, and authentication flows.
• Design clean REST APIs and ensure reliable client–server communication.
• Work with PostgreSQL.
• Write unit tests and take ownership of debugging, performance profiling, and optimization to ensure systems are reliable and scalable.
• Follow best practices with Git, Docker, and basic CI workflows.
   

Requirements

• Strong problem-solving mindset, creativity, and ability to learn quickly.
• Solid Node.js experience in production (2+ years).
• Experience with at least one Node.js framework (Express, Fastify, or NestJS).
• Practical experience and strong interest in LLM-based systems, not just simple ChatGPT-style wrappers, including:
  • RAG
  • LangChain (bonus: LangGraph, LangSmith)
  • Prompt engineering
     
• Understanding of backend fundamentals: APIs, databases, performance, and debugging.
• Experience with JavaScript / TypeScript (1+ year).
   

What we offer

• Competitive salary and bonuses
• Remote-first culture
• Flexible schedule
• Open-minded, results-driven environment
• Product ownership and impact

We are looking for an experienced HR Business Partner to work closely with business leaders, drive performance, and support talent development. You will act as a trusted advisor, helping managers translate business goals into measurable outcomes, while fostering a high-performance culture across the organization

Responsibilities

• Develop effective HR policies and processes aligned with the company’s business goals
• Assess current HR processes, identify areas for improvement, and develop solutions to optimize processes at all stages of the employee lifecycle
• Oversee the implementation of new HR initiatives
• Ensure all HR policies are fully aligned with regulatory requirements
• Implement technological solutions to enhance efficiency and optimize HR operations
• Support the development and implementation of an HR strategy aligned with the company’s overall objectives
• Facilitate organizational transformations by adapting HR processes to new conditions
• Contribute to building an effective organizational structure, optimizing teams and roles, and developing plans to improve team collaboration and leadership
• Conduct assessments of HR process efficiency to identify potential improvements and adjust the strategy accordingly

Requirements

• At least 3 years of experience in a similar role and a minimum of 5 years in HR overall
• Track record of shaping and implementing HR policies for global teams, ensuring compliance with diverse labor laws and practices
• Proficiency in HR analytics and process automation tools
• Proven experience working with international labor laws and in global HR environments
• Strategic planning skills in the HR context

We offer

• 20 paid vacation days per year
• 10 paid sick leave days per year
• Public holidays as per the company’s approved Public holiday list
• Medical insurance
• Opportunity to work remotely
• Professional education budget
• Language learning budget
• Wellness budget (gym membership, sports gear and related expenses)

We’re looking for a hands-on Growth Marketing Manager with strong B2B SaaS experience to join the Coupler.io team.

Coupler.io is a data integration platform that helps businesses automatically collect data from multiple sources and turn it into clear, reliable reports. Our customers rely on Coupler.io to make data-driven decisions without complexity.

In this role, you’ll play a key part in driving product growth and shaping demand generation. You’ll own initiatives end-to-end — from strategy to execution — and experiment with lead generation, product-led, and community-driven growth approaches. At Railsware, we value ownership, autonomy, and proactive problem-solving. You’ll have the freedom to lead projects, test ideas, learn from data, and directly influence how Coupler.io grows.

If you enjoy turning strategy into action, working closely with product teams, and making a measurable impact, this role is for you🌟
 

Your skills

• 2+ years of experience in product marketing for B2B SaaS products
• User acquisition experience with different marketing channels
• Experience in driving growth through start-up and scale-up stages
• Proven track record in managing demand generation campaigns with measurable impact
• Hands-on experience in designing, launching, and scaling growth campaigns from 0 to 1
• Proficiency in designing and optimizing high-converting landing pages, including structure, copy, calls to action (CTAs), social proof, and A/B testing, to enhance trial starts and encourage paid upgrades
• Strong analytical skills, proficiency in data analysis, and a track record of using metrics to inform strategy and drive decisions. Experience with product analytics and tools such as Looker Studio, Posthog, Amplitude, BI tools, and GA4, etc. is a significant plus
• Familiarity with customer-insight methodologies (JTBD, interviews, surveys) 
• Strategic thinking with the ability to see the big picture, develop long-term strategies, and execute tactical plans effectively
• Fluent in English, both written and spoken
• Technical savviness, experience working with technical products, and the ability to translate complex concepts into clear benefits, as well as integrate workflows, APIs, and automation features into user value
• Excellent communication and presentation skills

Would be a plus

• Proficiency in marketing analytics, ETL, and data-integration tools
• Familiarity with PLG motions, usage-based pricing, and community-led growth
• Experience launching PPC Campaigns via Google Ads and LinkedIn Ads

Your responsibilities

• Drive growth by exploring new channels, owning product positioning and messaging, and translating complex data-integration capabilities into clear, differentiating narratives for both technical and business audiences
• Act as the key liaison between product, sales, marketing, and customer success teams, and ensure seamless communication and alignment on product roadmaps, launch plans, and feedback from the market
• Lead the communication strategy—email drips, release notes, in-app announcements, webinars—centered on crisp, benefits-led storytelling
• Analyze the full product & marketing funnel, surface insights, and generate data-driven growth hypotheses to improve acquisition, activation, adoption, and retention
• Conduct regular customer development interviews and market research to gain deep insights into customer needs, pain points, and buying journeys 
• Present our product’s vision, features, and benefits to internal stakeholders, at industry events, and to key customers
• Architect and run go-to-market (GTM) plans for new features, pricing tiers, and geographies—defining target segments, value props, routes-to-market, launch OKRs, and post-launch learnings
   

We Offer
🌎 Full-remote from any location or in one of our offices (Kyiv/Krakow/Warsaw) bit.ly/rw-remotecollab
💸 Competitive compensation, access to savings program, and deposit policy
💻 Thanks to our hardware policy, we use the best equipment and can regularly update it
🌴 34 days a year as paid time off (24 standard days + 10 more to cover public holidays)
🏋🏼 Health policy budget that will cover your private sports and healthcare expenses
🎤 Participate in local and international conferences
⌨️ Our offices are equipped with modern ergonomic chairs and standing desks
🍪 You can always find fresh food and drinks in our kitchen
🤩 More about our benefits and how we work 🔗Railsware Handbook: railsware.com/handbook

CLUST is a venture builder where successful businesses grow.
Young entrepreneurs launch and scale projects within our ecosystem, and specialised professionals realise their professional potential. We aim to work with talented entrepreneurs to learn and turn great ideas into profitable businesses.

Now we’re working with a startup in the Health & Fitness niche — and assembling a powerhouse team to drive real impact. The product’s growing fast — with proven unit economics, positive ROI on key audiences, and a marketing engine built to scale.

We’re looking for a Senior Backend Engineer — someone who will take ownership of serverless backend architecture and help us build a reliable, scalable foundation for our fast-growing product.

Why this role is worth your attention:
— Work with a modern codebase built with up-to-date technologies — no legacy constraints.
— Take part in high-level system design and architectural decisions.
— Contribute to a product that uses AI to meaningfully personalize user experience, turning data into real, tangible value for users.
— Operate in a flat structure with fast decision-making and minimal bureaucracy.
— Build a product that delivers real value and has a measurable impact on users’ lives.
— A professional growth path within backend and infrastructure engineering, with increasing ownership over system design, reliability, and platform-level decisions as the product scales.

What you will do:
— Build and maintain serverless backend services on AWS (Lambda, SQS, RDS).
— Own serverless.yml configuration: deployments, stages, environments, IAM policies.
— Design and evolve asynchronous message-driven workflows
(retries, DLQs, monitoring, failure recovery).
— Optimize PostgreSQL (Amazon RDS) performance and reliability
(indexes, migrations, scaling strategies).
— Implement monitoring and alerting, improve production stability and observability.
— Collaborate closely with frontend and product teams.
— Contribute to architecture and technical decision-making.

What we’re looking for:
— 5+ years of professional software development experience.
— Strong backend expertise with Python (3+ years).
— Hands-on experience with AWS Lambda (function design, packaging, deployment, monitoring, cold starts).
— Skills with Serverless Framework and serverless.yml (stages, variables, IAM roles, plugins, CI/CD).
— Production experience with Amazon RDS (PostgreSQL).
— Confident use of Amazon SQS: standard vs FIFO queues, retries, DLQs, idempotency, visibility timeouts and backpressure patterns.
— Strong understanding of REST API design.
— Observability experience: CloudWatch logs & metrics, alarms, structured logging, basic tracing.
— Deep understanding of security fundamentals: IAM least-privilege approach, secrets management (SSM / Secrets Manager), encryption basics, VPC fundamentals.
— Product mindset and autonomy in decision-making.
— English level: B1 and higher.

Will be a plus:
— Experience integrating payment providers.
— Experience with Google Spreadsheets integrations.

What we offer:
— Fully remote setup with flexible working hours.
— Benefits package (paid vacation, sick leave, and more).
— Support for personal and professional growth.
— Access to a curated corporate knowledge library.

We believe work should have meaning.
At CLUST, you’ll build systems that matter — with people who respect your experience and engineering ideas.

Sounds like a good match?
Send us your CV — we’d be glad to talk.