Jobs at Djinni

Please note this is a project based engagement, not an inhouse position. The social package in this case (vacation, days off, sick leaves, public holidays, equipment, accounting support) isn’t covered by Selecto.

-----------------------------------------------------------------------------------

Project Description: We are designing a flexible, scalable ecosystem of sports broadcasting platforms. We will design a Smart TV app, mobile app and website. The goal is to ensure a consistent and high-quality user experience across all digital touchpoints. The experience must serve a global, multilingual audience and perform reliably during major traffic spikes.
Domain: Broadcasting of sports events
What is expected: Design an ecosystem of platforms from scratch.
Team composition: Senior UX Designer, Senior UI Designer, UI Designer, Design Directors from the client’s side.
Engagement Duration: 6 months with a possibility of extension
Expected Working Hours: from 9 or 10 am Madrid time with a 1-hour break. Ideally, to involve a candidate who can occasionally travel to Madrid for onsite work with the client.

-----------------------------------------------------------------------------------

Key Responsibilities

• Define and drive the design vision for a Smart TV and video broadcasting platform across various surfaces and device types.
• Lead, mentor, and grow a team of product designers, fostering a culture of craft and continuous improvement.
• Architect and own a scalable Design System built TV-first, extended to Web and Mobile.
• Partner with product and engineering to shape roadmaps and turn complex requirements into elegant solutions.
• Embed user research and insights into design decisions across the product.
• Establish design operations: contribution workflows, review processes, and documentation
• Travel periodically to Madrid to work on-site

Required Skills & Experience

• 7+ years of experience in Product, UX, or UI Design
• Proven experience designing Smart TV or large-screen interfaces
• Experience leading or mentoring a design team
• Strong expertise in building, scaling, and maintaining Design Systems
• Experience working on sports, media, or broadcasting digital products
• Strong systems thinking and component architecture skills
• Advanced proficiency in Figma (libraries, variables, components)
• Solid understanding of frontend implementation and developer collaboration
• Experience working on large-scale, multi-platform products
• Strong communication and stakeholder management skills

Description:

We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.


The future of Web3 starts with you: join us as a Financial Monitoring Specialist!

Requirements:

— At least 1 year of experience in financial monitoring or in a related field with similar responsibilities.
— Basic understanding of cryptocurrencies and blockchain technology, along with a strong interest in the industry and willingness to learn.

Responsibilities:

— Monitor transactions using the Transaction Monitoring System to identify any abnormal or suspicious patterns.
— Conduct transaction checks using blockchain analytics tools such as Chainalysis, Crystal, Elliptic, etc.
— Process incoming transactions in accordance with established procedures and compliance requirements.
— Process outgoing transactions, ensuring full adherence to internal rules and operational protocols.
— Perform regular balance monitoring to maintain adequate liquidity levels.
— Analyze trading activity to detect anomalies or potentially suspicious behavior.
— Review accounts and transactions for compliance with applicable regulations and internal AML/CFT policies.
— Handle and execute requests from other departments to ensure timely operational support and coordination.

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.
— 30 calendar days of paid leave.
— Additional days off for national holidays.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
Let’s Build the Future Together!

WHO WE ARE?

We are Edge Solutions Lab, a team of engineers with a strong background in product development of edge solutions and data platforms.

We have a long-term partnership with a customer in the US who is looking to expand their onsite team with talented engineers like you. This is an exciting opportunity to collaborate with industry leaders, work on impactful projects, and contribute to the development of next-generation data analysis technologies for healthcare, biotechnology, and research domains.
 

WHO WE ARE LOOKING FOR?

We are seeking a highly skilled Full Stack Developer to join our team, working on an innovative bioinformatics platform focused on simplifying the analysis and interpretation of RNA-sequencing data through intuitive web applications and cloud-backed services. In this role, as part of a team, you will be building, modifying, and improving user-facing web applications, implementing REST APIs and back-end business logic, and building and maintaining DAG pipelines in Airflow using Python to support data processing and analysis workflows that help researchers and scientists explore data, visualize results, and derive actionable insights.
 

IN THIS ROLE YOU WILL:

• Design customer-facing Web UI, RESTful services, and APIs for a modern bioinformatics analysis platform.
• Design and maintain DAG pipelines in Airflow using Python to support data processing and analysis workflows.
• Design user interactions on web pages.
• Develop high-performance applications by writing testable, reusable, and efficient code.
• Develop effective SQL and NoSQL data layers by utilizing various databases.
• Develop integrations with third-party services using external APIs.
• Implement effective security protocols, data protection measures, and storage solutions.
• Collaborate with team members and stakeholders on the integration of various parts of the platform.
• Ensure that non-functional requirements such as security, performance, maintainability, scalability, usability, and reliability are considered when architecting solutions.
• Document processes, including database schemas, as well as prepare reports.

WHAT YOU BRING ALONG:

• At least 4 or more years of working experience in a Full Stack position.
• Strong proficiency in TypeScript, JavaScript ES6+, HTML5, and CSS3.
• Extensive knowledge of ReactJS and Next.js, along with their ecosystem and common frontend development patterns.
• Solid hands-on experience with Node.js and building applications in TypeScript.
• Experience with Airflow and DAG pipeline development using Python.
• Experience with RESTful architecture.
• Experience with OAuth2-based authentication and authorization flows.
• Proficiency in database design and hands-on experience with SQL, including PostgreSQL.
• Experience with event-driven architecture and messaging middleware (MQTT).
• Familiarity with common software development and management tools such as GitLab CI, Jira, and Confluence.
• Good understanding of common programming paradigms and architectural design patterns.
• Strong interpersonal, analytical, and organizational skills.
• Bachelor’s degree in Computer Science, Software Engineering, Information Science, or other related fields.

WILL BE A PLUS:

• Hands-on experience with containerization tools (Docker) and orchestration platforms (Kubernetes).
• Hands-on experience with development of cloud-native applications and utilizing AWS services (S3, ECS/EKS, RDS).
• Hands-on experience with Auth0.
• Experience working with billing providers, preferably Chargebee.
• Familiarity with R and experience working with data-processing or analysis pipelines written in R.
• Development of IoT applications.
• Experience with testing frameworks.

Dynamica Labs invites a Junior Project Manager /Customer Success Specialist for the implementation of Microsoft Dynamics 365 CRM system to our clients. This position is ideal for those looking to switch to IT, or those currently working in client-facing roles such as QA, BA, PM, Technical Support Specialist or similar. We also consider candidates without commercial experience in an IT company. We provide comprehensive training for transitioning into this role. 
 
Successful candidates can advance to positions such as Customer Success Manager (CSM), Senior Customer Success Manager, Solution Architect, or Senior Functional Consultant. 

 FUNCTIONAL RESPONSIBILITIES: 

• Participation in projects for the implementation of Microsoft Dynamics 365 CRM system. 
• Interaction with the development department in terms of writing tasks for system customization, controlling deadlines and quality of execution. 
• Configuring the Microsoft Dynamics 365 CRM system to fit the client's business processes. 
• Building strong relationships with clients to ensure excellent service levels. 
• Meeting deadlines and reporting on completed work.
   

    WHAT WE EXPECT FROM YOU: 

• Higher education 
• Desire to continuously learn new things 
• Technically savvy 
• English language proficiency at the upper-intermediate level or higher 

 
    WOULD BE A PLUS: 

• Higher education in technical or economic fields 
• Experience working in an IT company 
• Experience as a PM or project management courses 
  
   BENEFITS:  
• A London based company, Microsoft Gold Partner - Business system integrator 
• UK and US based clients only 
• Opportunities for self-realization, professional and career growth 
• Skilled management and mature processes 
• Interesting and diverse projects 
• Friendly team 
• Transparent payment system 
• Flexible work schedule, remote work 
• Paid public holidays, annual leave, sick days 
• Guidance, mentoring and training for Dynamics Sales and Marketing, HubSpot, ClickDimensions, MS PowerApps 
   
  Check out this video to learn more about the position:
  https://www.youtube.com/watch?v=gsM6z-38daI
   

If you have a desire to work in a dynamic team and develop in the field of Microsoft Dynamics 365, we look forward to seeing your CV! 

About the company:

Reyo Media Cyprus is a team passionate about technology, innovation, and research. We aim to offer full-cycle IT solutions for companies all over the globe. Our mission is to help people integrate technology into everyday life and to enable innovation through technology, offering SAAS product development and infrastructure solutions.

About the Job:

We’re looking for a motivated professional System Administrator/DevOps who is responsible for the maintenance of workstations remotely, CI/CD, and other automated processes that have been established by the current team if you love to bring standardization and scalability to the next level.

Your Main Responsibilities:

• Deploy, manage, and optimize cloud infrastructure for global web projects.
• Implement robust application security, performance optimization, and load balancing.
• Provide remote technical support and troubleshooting assistance via HelpDesk for distributed team members.
• Monitor information security and ensure compliance with best practices.
• Manage and enhance continuous integration and continuous deployment (CI/CD) processes.

Our Requirements:

• Minimum of 3-5 years experience as a System Administrator or DevOps Engineer.
• Strong hands-on experience with Terraform and Docker.
• Proficiency in administering web servers (Nginx, Apache, PHP, Selenium).
• Extensive experience with cloud platforms (AWS, DigitalOcean, GCP).
• Solid understanding of databases and caching systems (PostgreSQL, MySQL, Redis).
• Familiarity with monitoring tools (Zabbix,etc.).
• Proven expertise in managing CI/CD pipelines.
• Experience with log management solutions (Grafana, ELK stack, etc.).
• Experience with VPN protocols (OpenVPN, WireGuard).
• Experience with data warehousing solutions such as Snowflake is a plus.

Skills:

• Excellent organizational skills, attention to detail, and ability to multitask.
• Strong problem-solving abilities and teamwork orientation.

Why do we enjoy working here?

• A young and driven team of professionals who are willing to grow and bring value.
• People-centric culture.
• L&D - support your need to replenish your knowledge and acquire new skills to do your job better via paid Professional training & e-learning courses.
• Flexible working schedule. We don’t use any time-tracker. We opt for performance.

We’re rapidly growing and inviting a Payments Tech Support Specialist to our Paycord team.
If you’re ready for new challenges in a dynamic and fast-paced environment, this could be the perfect role for you.
You’ll be the bridge between merchants, the operations team, and the technical team, solving problems so that payments stay on track.

Requirements
 

• 2+ years of background as a technical support manager in PSP/Billing Support Team;
• Understanding of API documentation;
• Ability to communicate with merchants and payment providers;
• Experience in interactions with development and QA teams;
• English level – Upper-Intermediate;
• Sharp attention to detail, and a proactive approach to problem-solving;
• Stress resistance and the ability to work in a dynamic environment.

Responsibilities
 

• Communication with merchants and payment providers about technical aspects;
• Provide technical support to internal teams and merchants, and troubleshoot complex technical issues;
• Address issues and suggest potential solutions;
• Logs analysis, integration code review;
• Collaborate closely with Integration managers, QA, and Development teams.

Nice to have
 

• Experience with Postman (for API testing), Kibana (for log monitoring);
• Familiarity with Jira and Confluence for creating and tracking technical tasks;
• Understanding of SDLC and agile development processes.

Working conditions
 

• Fast-paced and dynamic environment. The fintech sector evolves weekly, so adaptability is key;
• You’ll have a direct line to developers and QA to get answers quickly;
• Expect a high-volume environment where prioritizing is key;
• You’ll see your fixes keep everything running well and help things move to the next stage;
• Every integration is a little different, so you’re always learning something new.
  
  
  Candidate journey:
  HR Interview -> Tech Interview -> Final Interview -> Reference check - > Job Offer

Our Mission and Vision

At Solidgate, our mission is clear: to empower outstanding entrepreneurs to build exceptional internet companies. We exist to fuel the builders — the ones shaping the digital economy — with the financial infrastructure they deserve. To achieve that, we’re on a bold path: to become the #1 payments orchestration platform in the world.

About the Team and Role

You’ll join the Billing team and take ownership of the Taxes module — a core part of our billing system responsible for tax calculation and reporting across multiple locations.

The product has already moved beyond MVP and is actively used by customers. The foundational logic is in place, demand is high, and the next step is scaling functionality and reliability.

This role is exciting because you’re not maintaining legacy code — you’re building and shaping a critical system almost from scratch. 
You will have a clear path to Lead: full ownership of the Taxes direction, architectural decisions, and growing a team around it.

Your team — Product Owner, 1 Senior Engineer, Automation QA, and Tax Manager.

What you’ll own

• building tax calculation and reporting logic
• integrating third-party tax providers
• improving system resilience and uptime
• making architectural decisions and setting technical direction
• mentoring engineers as the team grows

In the first months, you’ll deliver key tax functionality and lay a solid foundation for future product and team growth.

We rely on automated testing over manual QA — unit, integration, functional, and e2e tests are a core part of how we ship and scale safely.

You’re a great fit if you have

• 4+ years of backend engineering experience
• 1.5+ years of commercial Go development
• Strong understanding of high-load system design
• Solid experience with PostgreSQL
• Experience with queues or streams
• Strong testing culture: unit, integration, functional, e2e

• Proactive, independent, result-oriented mindset

   

Nice to have

• Kafka
• AWS services
• CI/CD pipelines
• Fintech / payments / financial domain experience

• Understanding of VAT, GST, Sales Tax

   

Why Solidgate?

High-impact role. You’re not inheriting a perfect system — you’re building one.

Great product. We’ve built a fintech powerhouse that scales fast. Solidgate isn’t just an orchestration player — it’s the financial infrastructure for modern Internet businesses. From subscriptions to chargeback management, fraud prevention, and indirect tax — we’ve got it covered. We hold financial licenses in key regions and are a direct Visa & Mastercard partner and sub-reseller (top 5 globally).

Massive growth opportunity. Solidgate is scaling rapidly — this role will be a career-defining move.

Top-tier tech team. Work alongside our driving force — a proven, results-driven engineering team that delivers.

Modern engineering culture. TBDs, code reviews, solid testing practices, metrics, alerts, and fully automated CI/CD.
 

💌 The Extras: 30+ days off, unlimited sick leave, free office meals, health coverage, and Apple gear to keep you productive. Courses, conferences, sports and wellness benefits — all designed for ideas, focus, and fun.

We are the creators of a new fintech era!
Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,200 professionals united by a shared vision of shaping the Web3 future.
We are building our own blockchain ecosystem, ensuring maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.
Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT, and VISA.

The future of Web3 starts with you — join us as Risk Manager!

 

Requirements:

- 4+ years of experience in risk management, including 2+ years in crypto or digital assets;
- Bachelor’s or Master’s degree in Finance, Economics, Risk Management, Engineering, IT, or a related field;
- Strong understanding of market, technology, and operational risks within digital platforms;
- Experience in designing and implementing risk frameworks, including stress testing and scenario analysis;
- Proficiency in working with data (SQL), BI tools (Tableau/Grafana), and automating KRIs/reporting;
- Knowledge of risk identification methodologies and practical application (SWOT, checklists, environmental analysis, expert assessment);
- Hands-on experience with crypto platforms and DeFi protocols;
- FRM, CFA, PRMIA, or similar certifications are a plus.

Mindset & Soft Skills:
- Proactive and initiative-driven, able to independently identify issues and propose solutions;
- Highly organized with strong attention to detail;
- Comfortable working in a fast-paced environment, capable of multitasking and prioritizing;
- Excellent communication and negotiation skills;
- Able to make balanced and pragmatic decisions;
- Resilient under pressure and during crisis situations;
- Strong mentoring and knowledge-sharing mindset.

Responsibilities:

- Develop and implement risk policies for products and processes;
- Monitor and analyze key risk types, including market, liquidity, and operational risks;
- Conduct stress testing and scenario analysis to evaluate resilience to market shocks;
- Define and implement Key Risk Indicators (KRIs) and early warning systems;
- Prepare regular risk reports for senior management;
- Coordinate the work of risk analysts and provide mentorship;
- Support incident response procedures and crisis management;
- Collaborate with Strategy, Ops, and Engineering teams to ensure comprehensive risk identification and mitigation planning.

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.
— 22 business days of paid leave.
— Additional days off for national holidays.
— Health insurance.

About the Project
We are building a system that integrates multiple databases and external APIs, aggregates information from various sources, and builds a real-time knowledge graph to track complex relationships between entities.

Key Requirement
‼️ Hands-on experience with graph databases (minimum 6 months) is mandatory.
We will only consider candidates with practical experience in data modeling and writing queries for graph databases.

Tech stack: Python, FastAPI, SQL, NoSQL, graph, Docker, Docker Compose.

Required Skills
— 3+ years of commercial experience as a Backend Python Developer
— Hands-on experience with graph-structured data (minimum 6 months)
— Strong knowledge of SQL and NoSQL databases
— Good understanding of AWS and cloud-based architectures
— Fluent English
— Degree in Computer Science, Mathematics, or related field

Responsibilities
— Design, develop, and maintain backend services in Python
— Build, optimize, and scale cloud-based graph databases
— Model complex relationships using graph data structures (nodes, edges, properties)
— Integrate graph databases with other data storage solutions (SQL / NoSQL)
— Design, plan, and implement proof-of-concept solutions involving graph technology
— Optimize and troubleshoot graph queries
— Provide best practice recommendations for graph database design and integration
— Collaborate with cross-functional teams and present technical solutions to stakeholders

We are starting a new team focused on lead generation and user acquisition for external B2B clients via Telecom-based and Digital marketing channels. To strengthen this direction, we are looking for a skilled User Acquisition Manager to lead campaign strategy and execution, ensuring performance-driven growth for our clients.

Responsibilities:

•Create, implement, monitor, and manage messaging campaigns for user acquisition (SMS/Viber/Google Messages with our proprietary Big Data tools and services).

•Independently manage full-cycle campaigns: from strategy to execution and continuous optimization

•Analyze performance data to ensure strong ROI and effective budget allocation

•Optimize existing creative strategies, funnels, channels and test new ones to improve acquisition metrics

•Conduct market and competitor research to identify emerging trends and growth opportunities

•Deliver consistent, positive results while maintaining cost-efficiency

Requirements:

•Proven track record in managing retention or performance-based user acquisition campaigns (CPA model), particularly in e-commerce, banking or insurance verticals

•Solid understanding of conversion tracking, analytics, and campaign optimization techniques

•Experience with email marketing tools or Telecom-based channels (SMS/Viber) driving traffic to digital destinations is a plus

•Hands-on expertise with Google Ads, Facebook Ads, and performance marketing tools is a plus

•Proficiency with BI tools such as Power BI, Tableau or Google Data Studio

•SQL knowledge is a plus

•Analytical mindset, self-starter attitude, and a strong focus on delivering profitable outcomes

•Ability to work autonomously and take full ownership of campaigns

We offer: 
•A unique opportunity to build a new business direction within Ukraine’s largest and most trusted mobile operator
•Remote work format with optional office visits
•Competitive salary and quarterly performance bonus
•Paid sick leave and vacation
•Flexible working hours
•Comprehensive medical and life insurance
•Opportunities for professional growth and career development
•Friendly, supportive, and collaborative team environment

At Group107, we are looking for a proactive and results-driven IT Project Manager to join our Project Management team in Lviv. In this role, you will oversee the delivery of diverse projects, including e-commerce, SaaS, and marketing solutions. You will collaborate with cross-functional teams, ensure smooth project execution, and maintain strong communication with stakeholders to deliver high-quality results.

Requirements

• 2+ years of experience in IT project management or software development projects
• Proven track record of successfully managing end-to-end project delivery
• Experience with project management tools such as Jira, Trello, or Zoho Projects
• Solid understanding of SDLC and Agile methodologies
• Strong leadership and team coordination skills
• Problem-solving mindset with a focus on results and delivery
• Upper-intermediate level of English (both written and spoken)

Nice to have:

• Knowledge of WordPress, accessibility standards, or e-commerce platforms

Responsibilities:

• Create and manage project plans, timelines, and budgets
• Define project scope, goals, and deliverables in collaboration with stakeholders
• Allocate resources and monitor project progress against milestones
• Coordinate cross-functional teams (developers, designers, QA engineers)
• Facilitate effective communication between teams to ensure alignment
• Lead Agile ceremonies including stand-ups, sprint planning, and retrospectives
• Act as the primary point of contact for clients and internal stakeholders
• Gather, analyze, and clarify project requirements
• Manage stakeholder expectations and handle scope changes
• Identify risks and develop mitigation strategies
• Resolve project-related issues to prevent delays
• Prepare and maintain project documentation and reports
• Track and report KPIs and overall project performance
• Ensure deliverables meet quality standards and client expectations
• Collaborate with QA teams to ensure proper testing and feedback cycles

We Offer:

• 20 vacation days (workdays)
• 7 sick days
• Personalized career growth
• Internal English classes
• Education reimbursement
• Corporate events and team buildings
• Equipment provided

Responsibilities:

• Design, develop, and maintain C++ applications and services that interact with embedded systems, specifically using Ardupilot/PX4 or other similar platforms.

• Collaborate with hardware engineers to integrate C++-based software with embedded systems and sensors, enabling seamless data exchange and device control.

• Identify, troubleshoot, and resolve software and hardware integration issues, ensuring high-quality, reliable, and performant solutions.

• Utilize Python for up to 20% of development, mainly for scripting, testing, and automation tasks.
 

Required Qualifications:

• 5+ years of experience in development with a focus on embedded systems, device programming, or hardware interfacing.

• Proven experience with Ardupilot/PX4 or similar platforms (e.g., Betaflight, iNav).

• Solid understanding of embedded systems, microcontrollers, and hardware-software interaction.

• Strong expertise in C++, with experience in performance optimization,

multithreading, and I/O operations in resource-constrained environments.

• Experience with Python for development, including scripting, testing, and automation, as well as its use in embedded systems.

• Experience with serial communication protocols (e.g., UART, SPI, I2C).

• Experience in Linux/Unix environments and tools (e.g., Git, SSH, command-line utilities).
 

Will be a plus:

• Experience with single board PCs (e.g., Raspberry Pi, Arduino, etc.).

• Knowledge of cloud technologies or IoT platforms (e.g., MQTT, AWS IoT, Google Cloud IoT).

• Soldering and engineering skills.

• Experience with 3D printing.

Надаємо бронювання*

We are the creators of a new fintech era!
Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,200 professionals united by a shared vision of shaping the Web3 future.
We are building our own blockchain ecosystem, ensuring maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.
Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT, and VISA.

The future of Web3 starts with you — join us as a Senior QA Engineer!

Requirements:

Education & Experience:
- Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related STEM field
- 3+ years of experience in QA engineering or software testing
- Experience in high-throughput or low-latency environments (ideally quantitative systems, HFT, or financial applications)

Core Technical Skills:
- Strong knowledge of testing methodologies, version control, and SDLC best practices
- Strong mathematical background (probability theory, statistics, numerical methods relevant to trading strategy development)
- Experience testing REST APIs and WebSocket-based services
- Hands-on experience with monitoring and observability tools (e.g., Grafana, Prometheus, Kibana)
- Proficiency in writing SQL queries for data validation and debugging
- Familiarity with Linux command-line tools and Docker
- Confidence working with shell commands, logs, system tools, and process monitoring
- Experience with API testing tools (e.g., Postman)
- Proficiency in scripting/programming languages (Python)
- Experience with test automation frameworks (e.g., Pytest, Selenium, Pandas)
- Familiarity with version control systems and CI/CD workflows

Trading Systems Knowledge:
- Understanding of market microstructure and trading products (spot, futures, swaps)
- Ability to reason through quantitative problems and collaborate with researchers to implement models
- Familiarity with low-latency and high-frequency trading (HFT) systems

Problem-Solving & Analytical Skills:
- Strong analytical and problem-solving skills
- Commitment to testing and quality assurance
- Proven ability to independently solve complex technical challenges with real industry impact
- Experience with automated testing, continuous integration, and deployment processes

Mindset & Soft Skills:
- Passion for technology, problem-solving, and continuous learning
- Intellectual curiosity and drive to grow in the quantitative finance industry
- Team player with strong communication skills
- Reliable and predictable availability to support production trading systems.

Обов'язки

As a QA Engineer, you will be an integral part of a high-performance team focused on:
- Low-latency infrastructure
- HFT and quantitative systems
- Real-time risk management tools
- You will work closely with developers, analysts, and system engineers to ensure the profitability, scalability, and reliability of our systems.

Key Responsibilities:
- Design, develop, and execute comprehensive test plans for trading infrastructure and internal tools, ensuring low latency, high availability, and scalability
- Build and maintain automated test suites for real-time quantitative systems and APIs
- Collaborate closely with developers and analysts to clarify requirements, align on edge cases, and ensure proper test coverage
- Investigate and debug issues in complex distributed systems
- Contribute to performance testing, latency benchmarking, and system monitoring
- Support CI/CD pipelines with automated testing strategies
- Maintain high standards of test coverage and documentation

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.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
Let’s Build the Future Together!

 What you will do

• Participate in QA activities across the full product development lifecycle
• Design test strategies, test cases, and end-to-end scenarios for backend systems and REST APIs
• Execute tests, identify issues, analyze root causes, and verify fixes
• Build and improve automation infrastructure and testing utilities
• Perform API, integration, system, and performance testing
• Monitor quality and performance metrics
• Define and improve QA processes, benchmarks, and quality standards
• Create analytical reports and visualizations to support product validation
• Design KPI-based validation frameworks for optimization performance
• Validate algorithmic outputs using data analysis and quantitative methods

Requirements

• 5+ years of commercial experience as SDET or Test Automation Engineer
• Strong Python skills
• Experience with API testing and microservices
• Experience designing and implementing test strategies
• Strong understanding of functional, integration, and performance testing
• Hands-on experience with NumPy and Pandas
• Experience analyzing large datasets and interpreting results
• Ability to validate algorithmic outputs using data-driven approaches
• Strong problem-solving skills and ownership mindset
• Good communication and collaboration skills

Nice to have

• Experience with Pytest
• Experience with matplotlib, plotly, or seaborn
• Experience with Rust or willingness to learn
• Exposure to GIS projects
• Experience with large-scale datasets or big data environments
• Background in statistics, operations research, or applied mathematics
• Mentoring experience

Tech stack

Python, API Testing, Microservices, NumPy, Pandas, Rust, Kotlin, AWS, Docker, Kubernetes, Terraform

We offer

• Compensation: up to 4800 USD gross
• Salary review once a year based on performance review results
• Cooperation via Diia.City / Diia Employment
• Possibility of reservation from mobilization in accordance with current legislation and internal company policy
• Remote-first work format
• Paid vacation and sick leave (depending on cooperation format / jurisdiction)
• Medical insurance: basic coverage + mental health and vision care (depending on package)
• Well-being initiatives: online yoga / movement sessions and activities to support work-life balance
• Learning and development: courses, webinars, certification support, and internal knowledge-sharing sessions
• Community and events: internal events, meetups, and team activities
• Recognition and gifts: celebration of important milestones, gifts, and thoughtful team attention
• Autonomy and impact: no micromanagement, possibily of make influence on technical decisions and engineering practices
• Supportive professional environment, open communication, and minimum bureaucracy

We’re looking for a Full-Stack Developer with strong Python backend experience and modern React / Next.js frontend skills to help build secure, scalable AI-powered healthcare applications.

You’ll work on APIs, data-intensive systems, and intuitive UIs used for clinical insights and AI-driven workflows.

Backend Requirements (Python)

Required

• 4+ years of professional experience with Python

• Experience with PostgreSQL or other relational databases

  (schema design, indexing, query optimization)

• Experience building RESTful and async APIs

  (FastAPI, asyncio, aiohttp, or similar)

• Strong understanding of Python concurrency and parallelism
• Experience with ORMs (SQLAlchemy or similar)
• Background job systems (Celery, RQ, or similar concepts)

• Experience integrating AI / LLM services

  (OpenAI, Anthropic Claude, LlamaIndex)

• Experience with vector search / embeddings

  (pgvector, OpenSearch, Pinecone, or similar)

• Message queues: Redis, RabbitMQ, Kafka
• Familiarity with AWS: S3, EC2, RDS, CloudFront, SES, OpenSearch
• Experience writing tests with pytest (including async tests)

Nice to have

• Experience with HIPAA compliance
• Background in healthcare, medical data, or EMR systems
• Familiarity with FHIR APIs

Frontend Requirements (React)

Required

• 3+ years of experience with React 18+
• Strong TypeScript skills (strict mode)
• Experience with Next.js (App Router, SSR concepts)
• Tailwind CSS (utility-first, responsive layouts)
• Component libraries: Radix UI or similar
• State management: Zustand and/or React Context
• Data fetching: SWR or similar
• Forms: React Hook Form + validation libraries
• Data tables (TanStack Table, virtual scrolling)
• Frontend testing: Jest, React Testing Library
• Familiarity with Feature-Sliced Design (FSD)
• Strong understanding of accessibility (WCAG 2.1 AA)
• Experience with WebSockets for real-time features
• PDF rendering (PDF.js or similar)
• Comfortable with Git workflows and code reviews

Backend Responsibilities

• Design, implement, and maintain secure, well-documented APIs
• Build backend services for AI chat and clinical insights
• Parse and process data from documents, EMRs, and third-party APIs
• Design and optimize PostgreSQL data models
• Efficiently handle large datasets and historical patient records
• Integrate backend systems with LLMs and vector databases

Frontend Responsibilities

• Build and maintain responsive, accessible UI components
• Implement complex UI features: forms, tables, dashboards, real-time updates
• Follow Feature-Sliced Design principles
• Manage global and feature-level state effectively
• Integrate frontend with backend APIs
• Optimize performance for large datasets
• Build data visualizations and clinical timelines
• Monitor and improve Core Web Vitals and bundle size

Benefits

• Opportunities to work on diverse and challenging projects;
• A supportive and collaborative team environment;
• 12 vacation days per year;
• 5 sick days per year;
• English classes;
• Access to therapist and psychologist support for mental well-being.