Jobs at Djinni

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets.

We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Trusted by 200+ companies, managing $150M+ in ad spend.

Scale faster. Grow smarter.

We’re looking for a Marketing Intern - someone who can turn the ordinary into something fresh, notice the little things, catch trends early, and add a personal twist where it matters.

If you feel at home in the digital space, enjoy experimenting, adapt easily to change, and want to grow in marketing - we’d love to meet you.

What You Will Do:

• Analyze the performance of advertising creatives and identify areas for improvement.
• Search for source materials (images, music, videos) to support the creation of ad content.
• Collaborate with marketers and the creative team to develop innovative advertising materials.
• Work closely with the compliance team to ensure all creatives meet the required standards.
• Set tasks in the internal company system and CRM, providing clear and detailed technical specifications.
• Stay up to date with market trends to find inspiration and bring new ideas into creative development.

Requirements:

• English level B1 or higher.
• Understanding of what makes up a creative (fonts, music, video, background, etc.).
• Willingness to learn and grow.
• Attention to detail.
• Analytical thinking skills.
• Ability to work effectively as part of a team.

We Offer:

• Remote work
• Company-provided laptop and all necessary equipment
• Paid vacation and sick leaves
• Full training from scratch and support at every stage.
• Open feedback and transparent direct communication

Required languages

English

B1 - Intermediate

Ukrainian

Native

About SBC Digital

SBC Performance is a digital marketing and ad-tech ecosystem partnering with the world’s top ad platforms to drive performance. We help brands scale globally through high-converting creative marketing solutions and smart campaign optimization. We’re proud to be elite partners with TikTok (Top 1 globally), Meta (Top 10), and Google.

With over 250+ professionals based in the US, Czech Republic, Poland, Ukraine, and other locations, we are building a fast-moving, data-driven performance culture.

Privacy Notice about your data: https://sbc-performance.com/notice-privacy-for-recruitment/

Required languages

English

B1 - Intermediate

Ukrainian

C1 - Advanced

About SBC Performance

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets.

We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Direct partnerships with Meta, TikTok, Google, Bing, and Snapchat give you priority access to premium ad infrastructure.

• As a Backend Developer for this project, you will have the opportunity to contribute to industry leading software for our global clients. You will work closely with cross-functional teams and regional experts to design, implement, and support solutions. This is your chance to work on a stable, long-term project with a global client, focusing on digital transformation and change management.
  
  We are looking for a Mid-Level Backend Developer with solid expertise in Node.js, RESTful API design, and cloud-native development. The ideal candidate will have hands-on experience building scalable, secure, and high-performance backend services deployed on AWS and Azure using Kubernetes. You will work closely with cross-functional teams to design, build, and maintain backend systems that power our applications.
  
  Why Join Us?
  - Exciting Opportunities: Work in squads under our customer's direction, utilizing Agile methodologies and Scrum.
  - Innovative Application: Contribute to an application that guides and documents the sales order process, aids in market analysis, and ensures competitive pricing.
  - Workflow Governance: Be part of a team that integrates digital and human approvals, ensuring seamless integration with a broader ecosystem of applications.
  - Global Exposure: Collaborate with reputed global clients, delivering top-notch solutions.
  - Career Growth: Join high-caliber project teams with front-end, back-end, and database developers, offering ample opportunities to learn, grow, and advance your career.
  
  If you have strong technical skills, effective communication abilities, and a commitment to quality, we want you on our team!
  
  Ready to make an impact? Apply now and be part of our journey to success!

   

• Responsibilities:

  • Design, develop, and maintain backend services and RESTful APIs using Node.js
  • Build and deploy containerized applications on Kubernetes across AWS and Azure environments
  • Collaborate with frontend, DevOps, and platform teams to define and deliver features
  • Implement and maintain CI/CD pipelines for automated build, test, and deployment
  • Ensure API performance, reliability, and security through proper design and monitoring
  • Manage and optimize cloud resources across AWS and Azure
  • Write and maintain unit, integration, and API tests to ensure code quality
  • Participate in code reviews, technical discussions, and architecture decisions
  • Troubleshoot production issues and contribute to incident resolution
  • Stay current with emerging technologies in backend development, cloud services, and container orchestration

   

• Mandatory Skills Description:

  Years of Experience:
  • 4-6 years in backend application development, with at least 1-2 years working with cloud services and container orchestration.
  
  Backend Development
  • Strong proficiency in Node.js (Express, Fastify, or NestJS)
  • Deep understanding of RESTful API design, versioning, and best practices
  • Experience with API authentication and authorization (OAuth2, JWT, API keys)
  • Proficiency in JavaScript and TypeScript
  • Understanding of event-driven architecture and message queues (e.g., RabbitMQ, Kafka, SQS)
  
  Cloud Services
  • Hands-on experience with AWS (EC2, S3, Lambda, SQS, SNS, IAM, CloudWatch)
  • Working knowledge of Azure (App Service, Azure Functions, Azure DevOps, AKS)
  • Understanding of cloud networking, security groups, IAM policies, and secret management
  
  Container Orchestration
  • Proficiency in Docker — building, optimizing, and managing container images
  • Hands-on experience with Kubernetes (K8s) — deployments, services, config maps, secrets, ingress, helm charts
  • Experience with managed Kubernetes services (EKS, AKS)
  
  DevOps
  • Experience with CI/CD pipelines using GitLab CI, GitHub Actions, Jenkins, or Azure DevOps
  • Familiarity with Infrastructure as Code (IaC) tools such as Terraform or Helm

   

• Nice-to-Have Skills Description:

  Database Management
  • Experience with SQL databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, DynamoDB, Redis)
  • Understanding of database optimization, indexing, and query performance tuning
  
  Observability and Monitoring
  • Familiarity with logging and monitoring tools (CloudWatch, Prometheus, Grafana, ELK stack)
  • Experience with distributed tracing (Jaeger, OpenTelemetry)
  
  Security
  • Understanding of API security best practices (rate limiting, input validation, CORS, HTTPS enforcement)
  • Familiarity with container security scanning and vulnerability management
  
  Testing
  • Experience with automated testing frameworks (Jest, Mocha, Supertest)
  • Understanding of integration and contract testing for APIs
  
  Soft Skills
  • Strong problem-solving abilities and attention to detail
  • Good communication and collaboration skills
  • Comfortable working in an agile development environment

   

• Languages:
  • English: C2 Proficient

We're looking for a Founding AI Full Stack Engineer to help build and scale an AI-powered legal platform. The ideal candidate has strong experience with Python, TypeScript (Next.js), and full-stack product development, and is excited about solving complex problems using modern AI technologies.

Please note: strong Python skills are required. Hands-on experience with LLMs, AI agents, workflow automation, or retrieval-based systems is highly preferred. Startup experience and ownership mindset are big pluses.

Requirements

• 7+ years of professional software engineering experience.
• Strong full-stack development skills, particularly with Next.js (2+ years ), TypeScript, and Python (5 + years).
• Solid understanding of system architecture, APIs, and data modeling.
• Experience building and maintaining cloud-based solutions (AWS preferred).
• Ability to work independently in fast-changing environments and make sound technical decisions.
• Product-oriented mindset with a focus on delivering user value.
• Active use of AI development tools such as Claude, Codex, or similar.
• Strong communication skills and ability to explain technical concepts to non-technical stakeholders.
• Interest in understanding legal processes and applying technology to improve them.

Responsibilities

Product Development

• Develop and deliver full-stack features from backend architecture to user-facing interfaces.
• Collaborate with founders and customers to translate complex requirements into practical solutions.
• Take ownership of features throughout the entire development cycle, from planning to deployment and optimization.

Platform & Infrastructure

• Design and maintain scalable backend services and APIs.
• Build document processing systems for extracting and organizing legal data.
• Develop search capabilities that provide instant access to case-related information.
• Manage cloud infrastructure and monitoring on AWS.

AI & Automation

• Create AI agents that collect and structure client information.
• Build automated document generation workflows.
• Develop systems that learn from historical legal data to improve legal processes.

Nice to Have

• Experience working at an early-stage startup.
• Familiarity with AI agent architectures, retrieval systems, and workflow orchestration.
• Background in LegalTech, FinTech, or other regulated SaaS industries.
• Understanding of legal operations such as contracts, corporate formation, employment, or IP.

Gamzix is a high-growth international licensed iGaming provider, creating high-performing games and scalable, cutting-edge solutions for the global market.

Our team of 140+ specialists operates globally, with Warsaw as our main hub office. We are driven by continuous improvement and a people-first culture where we communicate openly, win together, and truly enjoy the game we’re building.

We operate under an MGA B2B Critical Supply License and certifications from iTechLabs and GLI, ensuring our products meet high standards of quality, compliance, and performance across markets.

We are looking for an organized and proactive Travel Manager who will take full ownership of business travel operations across the company. This role is being introduced as part of the expansion of our Commercial Department and will become the central point of coordination for all employee and management travel worldwide.

If you enjoy turning complex travel logistics into seamless experiences, can juggle multiple trips simultaneously, and thrive in a fast-paced environment where no two days look the same — we’d love to meet you.

Key Responsibilities

• Organize end-to-end business trips for employees, managers, and external partners, including flights, hotels, transfers, visas, insurance, and travel allowances.
• Coordinate and maintain travel calendars, ensuring efficient scheduling and avoiding conflicts.
• Research and propose optimal travel solutions balancing comfort, timing, and cost-efficiency.
• Manage booking processes and coordinate approvals with stakeholders before finalizing arrangements.
• Monitor travel expenses and ensure compliance with company budgets and travel policies.
• Build and maintain relationships with airlines, hotels, travel agencies, and service providers.
• Prepare and manage travel-related documentation, confirmations, insurance policies, and expense information.
• Support employees during travel disruptions, cancellations, delays, and emergency situations.
• Continuously optimize travel processes and identify opportunities to improve efficiency and service quality.
• Coordinate travel arrangements for management and support high-priority business trips.

Requirements

• 2+ years of experience in Travel Management, Travel Coordination, Operations, Executive Support, Business Support, or a similar role.
• Proven experience organizing multiple business trips simultaneously.
• Experience coordinating travel for external stakeholders, partners, or clients.
• Strong understanding of travel logistics, booking processes, and international travel requirements.
• Excellent organizational and multitasking skills.
• Strong problem-solving mindset and ability to make decisions under time pressure.
• Experience managing travel budgets and maintaining accurate records.
• Excellent communication and stakeholder management skills.
• High level of ownership and responsibility.
• English level B2+ (written communication is especially important).

Tech Skills

• Flight and hotel booking systems.
• Travel planning and logistics coordination.
• Budget management.
• Excel / Google Sheets.
• Vendor and supplier communication.
• Documentation management.

Nice to Have

• Experience supporting C-level or senior management travel.
• Experience working in international companies.
• Experience with Jira.
• Experience organizing travel across multiple regions and jurisdictions.
• Experience building or improving travel processes from scratch.

Benefits

• 7-hour working day (10:00 AM — 6:00 PM with lunch break).
• A-class office in Mokotów, Warsaw.
• Competitive salary in the IT industry.
• 10 paid sick leave days.
• 28 paid vacation days.
• State holidays are paid.
• Medical insurance.
• Training and professional development reimbursement.
• Corporate English courses.
• Referral bonus program.
• Open and transparent communication.
• Friendly and supportive team.
• Corporate events and team-building activities.
• Strong work-life balance culture.

Please note that feedback on your application will be provided within two weeks if a positive decision is made regarding your candidacy.

Hi there! We’re Softsich 👋
A young, ambitious, and fast-growing company creating innovative digital products.
We’re looking for a CRM Specialist who combines analytical thinking, attention to detail, and a systematic approach to user retention and lifecycle management.

Your key responsibilities will include:
– Work with promo plans and execute campaigns across your projects.
– Manage automated CRM flows (email, SMS, push, pop-ups) and perform urgent manual sends.
– Set up and optimize communication logic based on retention and lifecycle strategies.
– Segment users (active, inactive, VIP, churn, reactivation, etc.) based on events and attributes.
– Work with Customer.io (campaigns, broadcasts, journeys, segments).
– Monitor the correctness of communications and prevent segment overlaps.
– Analyze campaign performance and prepare recommendations for optimization.
– Collaborate with product, CRM, and other teams to implement communication logic and launches.
– Conduct market and competitor analysis, including CRM best practices.
– Participate in setup and launch of new brands.

It’s a match if you have:
– Experience working with Customer.io or similar automation platforms.
– Experience working with TrueLabel.
– Understanding of email / SMS / push / pop-up automation principles.
– Knowledge of retention metrics (churn, reactivation, CTR, CR, etc.).
– Experience with user segmentation based on events and attributes.
– Understanding of how bonus mechanics impact CRM flows.
– Basic or confident knowledge of HTML/CSS for email templates.
– Strong analytical thinking and ability to work with data.
– English proficiency at the Intermediate level.

Would be an advantage:
– Experience with Tableau or similar analytics tools.

What we offer:
– Flexible schedule and the choice to work remotely or from our offices in Kyiv or Warsaw.
– 24 paid vacation days, sick leave, and medical insurance (in Ukraine; other countries in progress).
– A friendly team where it’s easy to ask questions, learn, and be yourself.
– Coverage of expenses for professional events.
– Birthday greetings, team buildings, and plenty of real teamwork.
– Zero support or cooperation with the aggressor country or any related businesses.
If this approach resonates with you — feel free to apply 🚀

Requirements

• 2+ years in GTM engineering, growth automation, RevOps, or SDR ops
• Hands-on with Clay (or similar enrichment tools) and n8n / Make / Zapier
• Experience with cold-email platforms (Instantly, Smartlead, lemlist) and deliverability basics
• Comfortable with APIs, webhooks, and data wrangling; basic Python/JS is a plus
• CRM administration experience (HubSpot or similar)

• English — Upper-Intermediate (B2+)

   

Responsibilities

• Build end-to-end outbound pipelines: sourcing → enrichment → scoring → email + LinkedIn sequences
• Set up signal-based prospecting (funding, hiring, tech-stack triggers)
• Use LLMs to personalize outreach at scale
• Own deliverability, CRM data hygiene, and reporting (reply rates, meetings, pipeline)

• Experiment with copy, targeting, and channels; iterate on results

   

Nice to Have

• Selling services for an IT outsourcing agency
• LinkedIn automation (Expandi, HeyReach), web scraping (Apify)
• LLM APIs (OpenAI, Anthropic) for enrichment

We Offer

• Fully remote, flexible schedule
• Tool budget and freedom to build the GTM engine your way
• Small senior team, no bureaucracy, fast decisions
• Competitive salary based on experience

• Design a healthcare Power BI dashboard tracking patient flow and treatment outcomes for a clinic network
• Build a sales performance report with row-level security for a 50-rep B2B sales team
• Develop a financial reporting suite with semantic model and incremental refresh for a multi-entity e-commerce group
   

These and many more are the projects we do at SpreadLogics with care and quality. Our clients love the results, and we grow steadily. Join us to make clients' businesses and lives better. 

This is part-time position.
 

What you will do:

• Build interactive Power BI reports and dashboards from real business requirements
• Design and optimize semantic models with DAX
• Set up Power BI Service: workspaces, refreshes, row-level security, incremental refresh
• Connect Power BI to SQL databases, BigQuery, Excel, SharePoint, APIs, and dataflows
• Document KPI logic clearly so clients understand the numbers
• Communicate with clients to translate business questions into reports
   

Required Skills:

• Strong Power BI Desktop experience
• Strong DAX
• Power Query / M
• Semantic model design
• Power BI Service: refresh setup, troubleshooting, deployment
• Row-level security
• Performance optimization
• Experience connecting Power BI to multiple data sources
• Ability to structure reports around business questions, not just charts
• Clear KPI documentation
• English skills (B1-B2), both written & spoken
   

Bonus Skills:

• Incremental refresh setup
• BigQuery or Azure SQL experience
• Looker Studio or Tableau exposure
• Understanding of data warehousing principles
• Light scripting (Python / DAX Studio)
   

Important! You must be able to showcase 2-4 past Power BI projects - ideally your most complex semantic models or visually impressive dashboards. Be ready to walk us through DAX decisions, performance choices, and the business impact.

Hourly rate - 25-35$.

About ChatRevenue.ai 

ChatRevenue.ai was founded by Ratmir Timashev (founder of Veeam) and Vlad Voskresensky (founder of Revenue Grid) to create the next generation of CRM systems.  

We’re building an AI-native CRM platform that completely redefines how sales automation works.  
By structuring data for intelligent automation, we enable agentic AI to design workflows, assist Sales Leaders and Reps in real time, and generate predictable sales funnels – all through a simple, chat-driven interface.  

Our mission: to build a CRM that works for User, not the other way around. 

About the role 

We are looking for a Principal Backend Engineer with strong Python experience and a proven track record of building and owning production backend systems. 

This is a hands-on engineering role focused on: 

• Python backend 
• FastAPI 
• Data-heavy systems 
• AI / LLM product features 
• System architecture and scalability 

We are looking for someone who can take ownership of a backend domain, make technical decisions, and build reliable systems from idea to production. 

What you will do 

• Design, build, deploy, and maintain core backend services using Python and FastAPI 
• Own backend architecture, data flows, and technical decisions in your domain 
  Build and scale data-intensive systems, integrations, and pipelines 
• Work on AI / LLM-driven product features together with the engineering team 
• Improve system performance, scalability, reliability, and observability 
• Contribute to engineering practices: testing, CI/CD, security, and code quality 
• Work closely with product and engineering to deliver high-impact features 

What we are looking for 

• 7+ years of hands-on backend development experience 
• Strong commercial experience with Python in production 
• Python should be your primary backend language 
• Strong experience with FastAPI, APIs, Docker, Git, and CI/CD 
• Experience owning backend systems end-to-end: architecture, performance, data, reliability 
• Strong knowledge of PostgreSQL and data-heavy systems  
• Experience building distributed, scalable, or high-load systems 
• Good understanding of system design and performance optimization 
• Ability to work with ambiguity and take ownership without micromanagement 
• High ownership, independence, and product mindset 

Nice to have 

• Experience integrating LLMs / AI into backend systems 
• Experience with RAG, embeddings, vector databases, or AI assistants 
• Experience with Kafka, Azure Event Hub, or other event-driven systems 
• Experience with Kubernetes and cloud infrastructure, especially Azure 
• Experience building ETL / ELT pipelines 
• Experience working with structured and unstructured data 
• Production observability, tracing, monitoring, and optimization experience 

This role is likely a strong match for people who 

• Enjoy owning backend systems end-to-end, not just implementing isolated tasks 
• Feel strongest in Python as their main backend language 
• Have worked on production systems where reliability, performance, and scale matter 
• Want to have direct influence on technical decisions and architecture 
• Are comfortable working in an early-stage, high-ownership environment 

What we offer 

• Remote-first setup 
• Flexible schedule aligned with European time zones 
• A core engineering role in an AI-native product 
• Direct influence on technical decisions and architecture 
• Real ownership and visible product impact 
• Opportunity to grow into technical leadership / domain ownership 

If you have strong Python backend fundamentals, experience owning production systems, and interest in AI-native products, we’d love to talk. 

We work with startups and established companies to create products in healthcare, fintech, eCommerce, and AI. This role offers real variety — new domains, evolving challenges, and steady professional growth instead of being locked into a single legacy system.

If you’re motivated by fast learning and building features that go live, this might be the right place for you.
 

What You'll Do

• Design and implement scalable backend solutions and contribute to architecture decisions
• Own features end-to-end — from technical discussion to production deployment
• Work closely with the client’s team on project tasks in English
• Optimize performance and improve existing systems
• Take responsibility for production stability and code quality

What We Work With

⚡ Python, FastAPI, Django, Pydantic, PostgreSQL, uv, Ruff

Gets You Extra Points

• Confident communication skills for requirement clarification
• Familiar with SQLModel, Alembic
• Used AI coding tools (Cursor, Claude Code) in daily workflow
• Practical experience working with AI/LLM integrations in real projects
• Experience working on production-ready applications
• Experience with full-stack development using React

What You Bring

• 1+ years of commercial backend development experience
• Strong knowledge of Python
• Solid understanding of REST APIs
• Experience working with SQL databases
• Ability to work independently and take ownership
• English: Upper-Intermediate (B2+) or higher — confident spoken and written communication with clients

What You Get

Work & Growth:

• Fully remote, flexible hours
• Structured code reviews
• Senior engineers who help you level up
• English practice sessions

Compensation:

• Salary in USD
• Performance reviews twice a year
• 15 days paid vacation + sick leave

AppsFlyer is known for its massive backend production.
At any given moment thousands of servers are consuming 150+ billion mobile app events, crunching our users’ data, serving requests and communicating on a massive scale.

To maintain the universe we call AppsFlyer, we practice modern production operations with a complete self-serve CI/CD platform, a highly integrated observability stack for our micro-services, backends, and infrastructure, a culture of ownership and eagerness for quality.

The Analytics group is responsible for showing our clients the stories their data is telling. Through complex aggregation, mission tailored analytical databases and carefully crafted APIs we are able to provide slice and dice analysis in our beautiful dashboards and through the use of external integrations.
Our group mixes disciplines from back-end, data, AI and front-end engineers and we’re looking for great Data-Oriented Backend Engineer developers that are passionate about what they do, who want to dive into the worlds of big data, microservices and production management at our scale, to help us reach our vision and goal: to be the best analytics suite in our business market.

What you’ll do

• Develop end-to-end, both client-facing and data infrastructure features, from data processing to database choice and modeling implementation
• Collaborate with product managers and software engineers to deliver complex products.
• Analyze and improve performance, scalability and stability of our systems, environments and tools.
• If you’re up to the challenge — Speak at meetups, write blog posts, speak at conferences, contribute to existing open source projects and release new open source software.

What you have

• 3+ years of development experience with a passion for excellence
• Experience in data engineering with a focus on Apache and Scala-Spark / py-spark)
• Experience with high throughput, low latency, mission-critical distributed systems
• Great communication skills in English
• B.Sc. in Computer Sciences or an equivalent.

Bonus Points

• Experience with large-scale production databases
• Experience with Airflow
• Strong server-side skills.
• Experience production grade BigQuery ETL and DBs.
• Experience with production grade GO BE services.
• Experience with production grade Clojure BE services.
• An “AI mindset”: stays up to date with the AI landscape, explores tools like Cursor or GitHub Copilot, and looks for ways to boost productivity through AI
• Recommended by an AppsFlyer employee

Benefits Package includes:

• Health Insurance
• Paid Unlimited Vacation Days + all national holidays + additional recharge days
• Meals Reimbursement
• Sport Reimbursement
• Breakfast in the office
• Mental health program
• Team building, happy hours, and other team activities
• Paid sick days
• Snacks, fruits & ice cold beer
• All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.” Oren Kaniel, CEO

Many significant top-tier customers and partners consume their AppsFlyer’s data via various interfaces on a considerable scale. One of these interfaces is our Data Warehouse, which stores colossal amounts of data produced by all our product teams. On top of that, we develop the business service layer that serves our customers. Being in the front on such a scale requires being at the top of everything the team does — from complicated business logic through interesting technical challenges that have a massive impact on the performance and cost of our data pipelines to the immediate feedback we receive from our clients when a new feature or improvement is released.

The team constantly collaborates with the Platform and Business to provide the most efficient solution for our data exposure. The collaboration includes a deep understanding of our technology, coping with the rising scale, having POCs for a never-ending effort to find the next best technology available to benefit our customers and us, and more.

Some of the technologies we currently use:

• Java
• Clojure
• GCP & AWS hosted solutions
• K8s
• Kafka
• DataDog

What you’ll do:

• Be a part of the team that owns and evolves AppsFlyer’s Data Warehouse
• Own and develop AppsFlyer products and features end-to-end — from design to production
• Work with petabytes of data flowing through AppsFlyer pipelines
• Solve diverse, complex problems at scale, with low clarity of the solution approach
• Collaborate with Product Managers and Software Engineers to deliver value to customers
• Analyze and improve the performance, scalability, and stability of AppsFlyer’s products, environments, and tools
• Continuously learn and evaluate new technologies in the everlasting effort to perfect our products and adapt to the ever-growing scale

What you have:

• 3+ years of development experience with a passion for excellence
• Experience in JVM languages
• Hands-on background with production systems
• Experience in building APIs for server-client applications
• Strong SQL knowledge
• Ability to grasp new languages, systems, and frameworks fast
• A team player with the drive to get things done and lead others along the way
• Good communication skills, spoken and written English

Bonus points:

• Experience in Clojure
• Exposure to large-scale distributed databases or enterprise data warehouses (BigQuery, Snowflake, etc.)
• Software system design experience
• Experience in building ETLs using Spark Scala
• Familiarity with the Google Cloud Platform
• B.Sc. in computer science or equivalent
• Recommended by an AppsFlyer employee

Benefits Package includes:

• Health Insurance
• Paid Unlimited Vacation Days + all national holidays + additional recharge days
• Meals Reimbursement
• Sport Reimbursement
• Breakfast in the office
• Mental health program
• Team building, happy hours, and other team activities
• Paid sick days
• Snacks, fruits & ice cold beer
• All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.” Oren Kaniel, CEO

AppsFlyer builds technology at massive scale, powering measurement, analytics, and fraud prevention across billions of mobile events every day.

Join AppsFlyer’s Security SDK Team, responsible for protecting the integrity and authenticity of our mobile SDKs across Android and iOS. The team works on securing SDK communication, improving SDK resilience, and building trusted solutions that run on billions of devices worldwide.

This is a great opportunity for engineers who are passionate about mobile development and interested in security, low-level systems, and reverse engineering.

We work with Android and iOS platforms, native components (C/C++), and cloud-based infrastructure, while encouraging continuous learning, technical growth, and hands-on research.

What you’ll do

• Develop AppsFlyer SDK features end-to-end — from design to production.
• Build and improve protection mechanisms for Android SDKs (primary focus) and iOS SDKs.
• Help improve SDK resilience against tampering and abuse.
• Collaborate with Product Managers and Engineers across mobile and backend teams.
• Participate in research, debugging, and investigation of mobile security challenges.
• Learn and work with low-level mobile technologies, native code, and reverse engineering tools.
• Work in an Agile environment with engineers across mobile, backend, and product.

What you have (Must)

• B.Sc. in Computer Science or equivalent experience.
• 1–2 years of software development experience, preferably in Android development.
• Experience developing mobile applications or SDKs.
• Good understanding of Android fundamentals and application architecture.
• Strong debugging and problem-solving skills.
• Curiosity and motivation to learn security and low-level technologies.
• Very good English communication skills.
• Strong ownership mindset and willingness to learn and grow.

Bonus Points

• Experience with Kotlin, Java, or Android SDK development.
• Familiarity with C/C++ or mobile native development.
• Interest in mobile security, reverse engineering, or runtime internals.
• Familiarity with tools such as Frida, Ghidra, or IDA.
• Experience with Gradle, CMake, or CI/CD systems.
• Familiarity with AWS or backend services.
• Exposure to LLVM/Clang or build toolchains.

Benefits Package includes:

• Health Insurance
• Paid Unlimited Vacation Days + all national holidays + additional recharge days
• Meals Reimbursement
• Sport Reimbursement
• Breakfast in the office
• Mental health program
• Team building, happy hours, and other team activities
• Paid sick days
• Snacks, fruits & ice cold beer
• All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.” Oren Kaniel, CEO

The ROI360 organization’s goal is to help user acquisition managers and monetization managers optimize the business performance of their mobile marketing campaigns. We help our customers understand the real value (value for money) of their mobile marketing efforts.

To achieve this goal, we build a distributed SaaS platform to collect, normalize, index, and serve cost and revenue data from 100+ marketing platforms such as Facebook, Google, Ironsource, and more — at scale.

What you’ll do:

• Develop and enhance our data collection platform.
• Solve diverse, complex problems at a large scale.
• Collaborate with Product Managers and Software Engineers to deliver value to customers.
• Analyze and improve the performance, scalability, and stability of AppsFlyer’s products, environments, and tools.
• Continuously learn and evaluate new technologies in the effort to perfect our products and adapt to the ever-growing scale.
• Take an active part in our on-call cycle and monitor the system.

What you have:

• 3+ years of backend engineering experience with a passion for excellence.
• Solid knowledge in: Kafka, SQS, K8S, Postgres, and event-driven systems.
• Experience with large-scale SaaS production services and databases.
• Experience with cloud platforms (e.g. AWS, GCP).
• Proficiency and ability to code well in at least one language (Java / Go / Clojure / etc.).
• Proficiency with database technologies such as SQL / Athena / BigQuery.
• A team player with a strong sense of ownership.
• Ability to grasp new languages, systems, and frameworks quickly.
• A drive to get things done, especially as part of a team.
• Ability to dive in quickly to complex systems.
• B.Sc. in Computer Science or an equivalent.

Bonus points:

• Experience in functional programming.
• Hands-on experience with Clojure.

Benefits Package includes:

• Health Insurance
• Paid Unlimited Vacation Days + all national holidays + additional recharge days
• Meals Reimbursement
• Sport Reimbursement
• Breakfast in the office
• Mental health program
• Team building, happy hours, and other team activities
• Paid sick days
• Snacks, fruits & ice cold beer
• All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

Our Culture

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all of our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.”
— Oren Kaniel, CEO

We are building a talent pool of Web3 Frontend Developers for upcoming outstaff projects with international clients 🚀.
 

This is part of our candidate pipeline — there is no specific project at the moment, but once a suitable opportunity becomes available, you'll be matched based on your skills and experience.
 

We're looking for frontend developers who can build dApp interfaces for EVM and Solana products — from wallet connections and transaction flows to DeFi dashboards and protocol UIs.

 

🛠️ Key Responsibilities
 

🔹 Build dApp interfaces using React / Next.js

🔹 Integrate wallets using wagmi, WalletConnect, and wallet adapter libraries

🔹 Work with viem / ethers.js for on-chain reads and writes (EVM)

🔹 Handle async blockchain state with React Query / TanStack Query

🔹 Manage application state using Redux or Zustand

🔹 Build intuitive, reliable UIs for DeFi, NFT, and protocol products

🔹 Collaborate closely with smart contract and backend developers

🔹 Communicate directly with international clients in English

 

📋 Requirements
 

🔹 2+ years of commercial experience with React / Next.js

🔹 Hands-on experience building dApp interfaces (wallet connect, on-chain data, transactions)

🔹 Solid knowledge of wagmi and WalletConnect integration

🔹 Proficiency with React Query / TanStack Query

🔹 Experience with Redux or Zustand

🔹 Understanding of EVM basics (transactions, gas, contract reads/writes)

🔹 Experience with real-time UI reactivity — seamless UI updates after on-chain actions (optimistic updates, event subscriptions, polling)

🔹 Basic understanding of the Solana ecosystem (accounts, transactions, wallet model)

🔹 English: B2+

🔹 Ability to work independently

✨ Nice-to-Haves

🔹 Experience building Solana dApp interfaces (wallet adapter, on-chain reads, transaction flows)

🔹 Understanding of DeFi UX patterns (slippage, gas estimation, token approval flows)

🔹 Experience with TypeScript in large-scale production React codebases

🔹 Exposure to NFT marketplace or on-chain gaming UI

🌱 Why Join Our Talent Pool?

🔹 Real dApp Engineering — interfaces for real users and real protocols

🔹 International Clients — teams across Europe and North America

🔹 Remote & Flexible — outstaff format, async-friendly

🔹 Blockchain-First Team — we speak the same language

🔹 Fast Matching — when the right project appears, we move quickly

✨ Why This Is a Great Opportunity

🔹 Real-world exposure — every project is different: different chains, different protocols, different challenges

🔹 Outstaff done right — we stay involved, support you throughout the engagement, and match you only where your stack truly fits

🔹 Keep growing — instead of running out of things to do at one company, you move to the next challenge

📬 What Happens After You Apply

🔹 Our team reviews your profile within a few business days

🔹 If there's a good fit, we'll schedule a brief intro call — to learn about your background, stack, and what you're looking for

🔹 After the call, you'll join our talent pool and we'll reach out proactively once a matching project comes up

⚠️ Important

🔹 This is a talent pool position (pipeline)

🔹 No specific project at this moment

🔹 You'll be contacted once a suitable opportunity becomes available

At FuturiX Solutions, we connect skilled blockchain engineers with international Web3 clients — matching you to projects where your expertise matters most 🌐⚙️

Requirements:

3-5 years embedded firmware development experience with C / C++, Linux / Unix platform;

Experience with ARM/MIPS processors, embedded Linux;

Wireless protocols (802.11);

Strongly need networking skill, OSI model understanding;

Ability to adapt and quickly pick up new technologies;

Ability to work productively and autonomously, whether on a small

team or solo, including the ability to give and receive constructive criticism to team members;

Experience with all phases of the software development life-cycle;

Excellent analytical and problem-solving skills;

Experience with Git, including merging and rebasing;

Experience with bash shell scripting and/or Python;

BS degree in Computer Science, or related engineering degree;

Effective written and verbal communication skills (ENGLISH MANDATORY).

Candidate needs to be in Kyiv (or consider relocation). Hybrid type of work.

Will be a plus:

Experience working with Cross Compilers;

Experience with OpenWRT;

Basic understanding of electronic circuits.

What do we offer:

International work environment and work with global development teams;

Excellent work conditions in an A-Class office (Horizon Park Business Center);

Compensation package matching global standards;

Flexible work hours (as required);

Paid parking, courses, training, conferences and business trips;

Medical insurance;

Free lunches.

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