Jobs at Djinni

YozmaTech isn’t just another tech company - we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family - you’ll feel right at home with us.

Our client's product enables users to build financial solutions designed for SMBs that turn manual monthly and quarterly reporting processes into automated ones.

We are looking for a highly skilled and passionate Lead Python Engineer with strong Django expertise and a passion for startups to join our team!

Key Requirements:

🔹 Bachelors degree in Computer Science or related field;
🔹 5+ years of experience in software development in a SaaS company;
🔹 Fluent in Python (Django);
🔹 Excellent knowledge and experience with building, optimizing, and maintaining large-scale production systems;
🔹 Experience with writing unit tests and integration tests;
🔹 Experience with Relational DBs (Postgres, MSSQL);
🔹 Experience and familiarity with Cloud Architecture and services;
🔹 Knowledge of REST and experience working with REST APIs;
🔹 Familiar with KISS, DRY, SOLID, OOP;
🔹 Knowledge of Celery;
🔹 English - Upper-Intermediate or higher.

Will be plus:

🔹 Familiarity with Azure;
🔹 Knowledge of RabbitMQ;
🔹 Knowledge of Redis;
🔹 Knowledge of Excel Add-Ins.

What you will do:

🔹 Take part in developing the backend of the SAAS application;
🔹 Develop and lead end-to-end development of new features and services in a multi-service environment while maintaining high quality and standards;
🔹 Develop scalable web APIs, implement sophisticated business logic, and develop asynchronous services in a data-oriented, scalable application;
🔹 Take part in a multidisciplinary team involving algorithms/frontend/UI/DevOps;
🔹 Play a significant role in the entire development life-cycle, from design to production.

Interview stages:

🔹 HR Interview;
🔹 Tech interview with Team Lead;
🔹 Interview with PM;
🔹 Interview with VP R&D (optional);
🔹 Reference check;
🔹 Offer.

iGaming Startup | LATAM | Fast Growth | Real Business Impact
 

We are a fast-growing iGaming startup that successfully launched our product in just 1.5 months and went live in Argentina.
The project is actively scaling and preparing for further expansion across the LATAM market.
 

We are now looking for a strong Senior Plus / Lead Financial Manager to become a key financial partner for the business and help build a transparent, scalable financial function from the ground up.

🔥 Why join us:

• Successful product launch in just 1.5 months
• Early-stage startup with fast decision-making and direct access to founders
• Opportunity to build the financial function from scratch
• Real influence on strategy, P&L and scaling decisions
• High-growth iGaming / LATAM market

🎯 Key responsibilities:

• Full financial management of the project
• Ownership of P&L, Cash Flow, Budgeting & Forecasting
• Control and analysis of PSPs, transactions, fees, chargebacks
• Financial analytics across product, marketing, affiliates and GEOs
• Management reporting for founders and C-level
• Cost control, expense optimization, unit economics
• Support of new GEO launches and LATAM scaling
• Collaboration with legal, accounting and payment partners

What we’re looking for:

• Senior / Lead Financial Manager experience in iGaming / Gambling / FinTech / High-Risk projects
• Strong understanding of iGaming economics, payments, PSPs and high-risk flows
• Experience in startups or fast-scaling products
• Strong analytical mindset with business orientation
• Ability to work in fast-paced, evolving environments
• Upper-Intermediate+ English
• LATAM experience is a strong plus

💎 What we offer:

• Role in a rapidly growing iGaming startup
• Opportunity to take a key leadership position at an early stage
• Direct impact on financial strategy and business growth
• Flexible remote work format
• Competitive compensation (discussed individually)
• A project that values expertise, ownership and speed

📩 If iGaming, startups and LATAM excite you — let’s connect.

Description

We are looking for a Product Manager to join a fast-scaling international team. This strategic role bridges business, technology, and product leadership.
Your mission is to proactively capture market needs and translate them into commercially viable, scalable, and competitive OOH solutions—both software and hardware. Acting as a strategic advisor and product driver, you will validate opportunities, shape solution roadmaps, and ensure excellence in execution and communication.

🚀 What you will do:

• Discover market needs: explore customer problems, industry trends, and partnership opportunities to shape product vision and strategy.
• Co-create solutions: design feasibility studies and innovative concepts that combine advanced technologies with long-term business goals.
• Lead product strategy: translate insights into product backlogs, oversee go-to-market readiness, and ensure commercial excellence.
• Manage the portfolio: apply lifecycle management (BCG matrix) to recommend upgrades, new developments, or sunsetting of products.

✅ What we’re looking for:

• 3,5-5+ years of experience in product management, pre-sales, or solution architecture (ideally within tech, logistics, or e-commerce).
• Strong ability to act as a translator between business and technology.
• Experience with Agile/Scrum, Jira/Confluence, design thinking, BCG matrix, PLM.
• Education: Bachelor’s or Master’s degree in Business, Computer Science, Engineering, or a related field.
• Fluent English (other European languages are a plus).
• Proactive mindset, strategic thinking, and confidence in making decisions with incomplete data.
• Willingness to travel across Europe.

🎯 What we offer:

• Official employment in Ukraine with a full social package and the possibility of deferment from military service (for male employees).
• Relocation support with covered housing expenses.
• Comfortable office in Lutsk with a hybrid work format.
• Provision of equipment and coverage of business travel expenses.

🚀 Professional Growth & Impact

• A leadership role in shaping a global product portfolio.
• Career growth in a high-performing unit with 20–50% YoY growth.
• Collaboration with global experts and participation in C-level discussions.
• Direct access to top-tier international clients.
• Freedom to innovate, test, and launch bold product initiatives in the parcel logistics space.
• Training budget for internationally recognized certifications (Agile, Scrum, UX).

Interview stages:
1 - HR + Head of Business Unit
2 - Operational Technical Manager
3 - Final Interview

    We are looking for an experienced Head of Analytics / Analytics Manager to lead the development and maintenance of company-wide reporting, manage core data sources, and drive the implementation of modern analytics and AI-enabled solutions. 
    This role combines hands-on expertise in Power BI, SQL, and Python with ownership of analytics processes, data quality, and a small analytics team. You will play a key role in ensuring reliable management reporting, supporting business growth, and evolving our analytics ecosystem.


Key Responsibilities

• Design, build, and maintain Power BI dashboards and reports for company management and business stakeholders ;
• Own and manage global data sources, including:
 - HRM system ;
 - Time tracking system ;
 - Agent schedules and workforce data ;

• Fully build and support reporting and data logic for the company’s main project, ensuring data accuracy and consistency ;

• Implement reporting for new projects, including: 
- Connecting to new data sources o Integrating data via APIs ;
- Creating new dashboards and data models; 

• Develop and improve data models and DAX calculations in Power BI ;

• Write and optimize SQL queries and data transformations; 

• Participate in the development of Microsoft Fabric capabilities within existing processes; 

• Coordinate implementation of ML / forecasting solutions together with external vendors; 

• Lead and manage a small team: Reporting & Data Analyst and Operational Analyst;
• Define priorities, distribute tasks, and review results;

• Ensure documentation, stability, and reliability of reporting solutions;

Required Qualifications
 

• Higher education in IT, Computer Science, Mathematics, Finance, or related field;
• 3+ years of hands-on experience with Power BI;
• Strong and practical knowledge of DAX;
• 3+ years of experience with SQL and building complex queries;
• 1+ year of experience with Python (for data processing / automation / ETL tasks);
• Experience connecting to external systems via APIs;
• Solid understanding of data modeling and BI best practices;
• Experience working with large datasets;
• English level: B1 or higher;

Nice to Have
 

• Experience with Microsoft Fabric (Dataflows Gen2, Lakehouse/Warehouse, Notebooks, Pipelines);
• Exposure to forecasting or machine learning concepts;
• Experience in BPO / Contact Center / Operations analytics;

What We Offer

• Opportunity to build and shape the analytics function
• Direct impact on management decision-making
• Participation in AI-driven analytics transformation
• Professional growth in a fast-scaling company

We are looking for a Customer Support Specialist with technical skills to provide excellent service within our project. The project involves providing continuous support for three platforms:

➖Help desk system

➖ A tool that helps sellers remain competitive across various marketplaces

➖ A tool that enables users to obtain positive feedback

As the first line of support, agents should possess a deep understanding of troubleshooting processes and methodologies, as well as the ability to address a range of issues effectively. Mastery of the escalation process is equally important, making proficiency in both areas essential.
 

Requirements:

• Excellent English, written and spoken (B2)
• Outstanding written and verbal communication prowess
• Background in customer support or experience in a SaaS project
• Ability to act in non-standard situations
• Ability to explain the complex in simple words
• Professional attitude
• Strong technical mindset is mandatory: ability to investigate systems, identify issues, and learn independently through hands-on exploration.
   

Responsibilities:

• Provide telephone support, answering questions about products (calls, tickets, and chats);
• Manage upgrades through proper escalation channels;
• Process or escalate cancellations based on the client tier;
• Explain the technical details of the projects to customers;
• Address and resolve customer complaints effectively;
• Manage refund processes after obtaining approval from the internal team;
• Operate live chat support for pre-sales inquiries;
• Offer post-sales support via live chat;
• Answer technical questions through a live chat interface;
• Provide billing support to customers across all communication channels;
• Participate in training sessions and ongoing development to stay updated on product; knowledge, company policies, and customer service best practices
   

Work conditions:

• Remote work;
• The probation period is 2 months;
• Flexible days off (2 per week);
• 2 types of work shifts: 14:30—23:00, Day 12:00—20:30 with floating 1-hour lunch break

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is an early-stage US health & longevity startup building an iOS-first medical platform for clinicians and clinics. The product focuses on creating a holistic, data-driven view of patient health by integrating Apple HealthKit, wearable devices, and medical sensors, with AI used to turn this data into meaningful clinical insights. The team is small and senior, combining engineering expertise with real medical background. This is a true early-stage environment where engineers have ownership, influence architectural decisions, and work closely with product, AI, and medical experts. The culture is technically strong, open, and pragmatic — focused on building quality solutions while moving fast. We are looking for an iOS Developer to work on core product development, HealthKit integrations, and scalable iOS architecture. This role offers real impact, autonomy, and the opportunity to help shape a medical product from the ground up.

Key Requirements:

🔹 5+ years of experience in iOS development, primarily with Swift;
🔹 Strong hands-on experience with SwiftUI;
🔹 Good eye for UI/UX and attention to detail in mobile interfaces;
🔹Solid understanding of iOS architecture patterns (e.g. MVVM) and clean code principles;
🔹 Strong knowledge of memory management and concurrency in iOS;
🔹 Experience with CI/CD pipelines and the App Store release process;
🔹 Experience integrating Apple HealthKit and working with health-related iOS APIs;
🔹 Ability to work with data-heavy mobile applications, including syncing large datasets with backend services;
🔹 Understanding of offline-first mobile architecture and background data processing;
🔹 Familiarity with cloud-based systems (AWS) and backend communication;
🔹 Basic understanding of machine learning / AI concepts and how mobile apps interact with ML-driven systems;
🔹 Experience collaborating with backend services (Python / Node.js) is a strong plus;
🔹 Familiarity with DevOps practices (e.g. CI/CD, infrastructure basics; Terraform is a plus);
🔹 English – Upper-Intermediate or higher.

What you will do:

🔹 Design and develop the core iOS application for a health and longevity medical platform used by clinicians and patients; 🔹 Build and maintain deep integrations with Apple HealthKit, wearable devices, and medical sensors (including smartwatches and glucose monitors);
🔹 Work with complex, data-heavy health datasets, ensuring accurate collection, processing, synchronization, and offline availability;
🔹 Collaborate closely with backend, AI/ML engineers, and medical experts to transform raw health data into meaningful insights and recommendations;
🔹 Take ownership of iOS architecture, performance, and scalability, contributing to technical decisions from early stages;
🔹 Implement and improve offline-first and background data processing scenarios;
🔹 Ensure data security, privacy, and reliability in a regulated medical environment;
🔹 Troubleshoot complex technical issues related to data integrity, performance, and device integrations;
🔹 Actively participate in product discussions, proposing technical solutions and improvements rather than just executing tasks;
🔹 Contribute to testing, stability, and continuous improvement of the mobile application;

Interview stages:

🔹 HR Interview;
🔹 Combined Initial Conversation and Design Interview: A 1-1.5 hour session that combines the initial conversation and design interview;
🔹 Coding Exercise: A coding exercise to evaluate the candidate's coding skills and ability to write clean, efficient code;
🔹 Reference Check;
🔹 Offer.

Project Overview:

We are seeking a Senior Backend Engineer with deep expertise in PHP and strong proficiency in Node.js to help modernize and scale our backend systems. This role is central to evolving a large PHP monolith into modular, service-oriented components while maintaining high standards for code quality, testing, and reliability.

You’ll work in a remote-first, globally distributed environment, collaborating closely with product, platform, and engineering teams. Strong technical ownership, communication, and architectural thinking are essential.
 

Customer Overview:

USA influencer marketing platform for organizations looking to advance their creator marketing. Its enterprise-grade technology and industry-leading intelligence facilitate scaled creator discovery, streamlined workflows, and robust reporting, while ensuring compliance and brand safety.
 

Responsibilities:

• Develop a deep understanding of an existing PHP monolithic codebase and progressively extract modular services
• Design and implement scalable, testable, and reusable backend services
• Write clean, maintainable PHP and Node.js server-side code
• Design and maintain robust RESTful and GraphQL APIs
• Lead refactoring efforts to improve performance, readability, and long-term maintainability
• Build, deploy, and operate services on AWS (Lambda, API Gateway, and related services)
• Write and maintain unit and integration tests
• Review, validate, and improve code generated with AI tools—never blindly accept AI output
• Identify technical risks, bottlenecks, and opportunities for improvement
• Clearly communicate technical decisions, trade-offs, and solutions in written and spoken English
• Create short video walkthroughs or demos explaining architecture changes or completed work
• Collaborate effectively in a remote, async-first cross-timezone team with flexible working hours

Skills/Requirements:

• Expert-level PHP (Laravel) experience (non-negotiable)
• Strong backend experience with Node.js
• Proven experience working on enterprise-grade, production systems
• Hands-on experience refactoring or decomposing monolithic architectures
• Strong background in API design and backend architecture
• Experience with AWS, especially Lambda and serverless patterns
• Solid understanding of software design principles, patterns, and clean code practices
• Experience writing testable code and maintaining automated test suites
• Fluency in English (written and spoken)
• Excellent problem-solving, debugging, and communication skills
• Highly proactive and self-directed; able to unblock yourself without waiting for instructions

AI & Developer Tooling Expectations

• You are expected to use AI as a productivity multiplier, not a replacement for engineering judgment.
• Experience with AI coding tools (e.g., GitHub Copilot, ChatGPT, Claude Code, Cursor)
• Using AI within IDEs such as VS Code or PhpStorm
• Critically reviewing, testing, and refining AI-generated code
• Understanding risks, edge cases, and limitations of AI-assisted development

As a Customer Care Representative, you’ll be the friendly first point of contact for users of SmartyMe — our inspiring mobile EdTech app. You’ll help users navigate the product, answer questions, and resolve issues to ensure a positive and motivating learning experience.

You’ll work with our in-house automation system, which minimizes routine tasks and lets you focus on meaningful support and user communication. You’ll also collaborate with the Tech Support team to report issues and suggest improvements that help make SmartyMe even better

Responsibilities:

• Managing web and app user requests in Zendesk;
• Escalating user issues to the technical team;
• Tagging user requests to gather analytics;
• Ensuring response times are within our SLA;
• Processing PayPal/Stripe disputes;

Requirements:

• Proficiency in English;
• Previous experience in customer support and familiarity with Zendesk are a plus but not required.

Schedule:

- Work hours: 8 hours a day, 40 working hours a week
- Work days: on a rotational basis
- Shifts: 24/7 operation; available shift options (Cyprus time): 16:00–00:00 and 00:00–08:00
- Breaks: 1 hour per shift

Start date: asap
Cooperation type: freelance

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

Why is it yours?

PwC SDC Lviv is not just a job. This is an opportunity:

• To really feel what it is like to work in an international company.
• Learn practical skills that will be relevant in a constantly changing world.
• To be part of a team that values your ideas and supports your growth.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv - you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

What awaits you?

Your role will vary by position, but one thing remains the same: you will work with professionals who will help you learn, grow, and achieve results. We will provide all the tools you need to reach your full potential.

Main responsibilities:

• creating invoices, adjusting and verifying invoices;
• working with requests from clients;
• preparing and analyzing statistical data;
• advising clients on general invoicing requirements;
• interacting and providing feedback to team members and clients.

Requirements:

• economic education or experience in accounting is appreciated;
• strong analytical, mathematical and problem-solving skills;
• confident user of MS Office, in particular Excel;
• English language skills at B2 level;
• ability to learn quickly, be self-motivated, and show initiative.

Ready for the challenge? Send your resume and join the team that shapes the future!

Privacy and personal data policy:
https://www.pwc.com/ua/uk/about/privacy.html

Project Overview
The project is online platform that helps people book desks, meeting rooms, schedule meetings, coordinate teams and manage visitors. 
 

Responsibilities:
- Build highly performant, scalable PHP based SaaS applications.
- Craft beautiful frontend applications using Angular 20 and Typescript.
- Develop solutions to deliver new innovative products for web and mobile platforms using the project RESTful APIs running in AWS.
- Work closely with the wider engineering team (full-stack, backend), designers, and product.
- Be included in decisions and challenge our technical direction.
- Design and develop code with performance, usability, maintainability, and security in mind.
- Resolve technical issues through debugging, research, and investigation.
- Write and maintain automated tests to ensure we deliver quality work for our customers.
- Create and maintain internal technical documentation for deliverables.
 

Requirements (Must-have):
- 5+ years relevant experience in a software engineering role.
- Experience building large-scale consumer web/mobile applications and distributed systems.
- Knowledge of PHP + Symfony framework. 
- Knowledge of TypeScript (Angular preferred) to create interactive user interfaces.
- Up to date with the latest frontend libraries, frameworks, and practices.
- Passionate about writing clean code.
- You must be a quick learner and be flexible about what technologies you use. 
- Good understanding of MVC and SOLID principles.
- Experience with multi-tenancy would be a plus.
- Experience in implementing web services with a REST and Web API architecture
- You must be comfortable with rapid development in a Scrum / Agile environment and iterating based on market and customer feedback.
- Knowledge of Unit testing
- English level: upper-intermediate and higher
- Excellent collaborator and communicator within your team and the wider company.
- BSc in a related field such as Computer Science, Computer Engineering, or other software/design discipline.

Hiring Process:
- Intro call
- Technical discussion (focused on real experience)
- Offer

About the client:

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities:

• Developing fast, high-traffic public-facing websites
• Explore new technologies and help the team to use them
• Work using AI tools and apply them to the SDLC
• Following software development best practices while delivering the work
• Following testing principles while testing your own code to ensure production readiness
• Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) 

Requirements: 

• 5+ years developing reliable, highly available, and scalable software systems
• Strong understanding of software architecture and design patterns
• Firm grasp of clean code principles and coding standards
• Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development
• Experience integrating AI tooling into your development environment for streamlined usage
• Experience with AI Frameworks like Vercel AI SDK, LangChain, etc.
• Strong proficiency with backend development with either of the following technologies Typescript +Node.js or C#+Typescript
• Strong proficiency with SQL & NoSQL datastores (GraphQL, Redis)
• Strong proficiency with frontend development (HTML, CSS, JavaScript)
• Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js.
• Hands-on experience developing and maintaining 3rd party content management systems
• Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker
• Experience with APIs and developing in a service-based application environment
• Experience building optimized UIs for performance
• Proficiency with version control systems such as Git
• Experience working within a formal CI/CD pipeline
• Experience with logging, monitoring, and alerting services like Datadog, Newrelic
• Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend
• At least Upper-intermediate English level
• This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

🚀AIMPROSOFT - Middle+ / Senior Back-End Developer (Java) Opportunity! 

Aimprosoft is looking for a Middle+ / Senior Back-End Developer (Java + AWS) to join a long-term (6–12 months, with a strong likelihood of extension depending on project progress and business needs) international project in the Payments Infrastructure & Integrations domain. 

The project focuses on building and maintaining backend services that integrate external providers (banks, acquirers, and alternative payment methods) into a unified payment platform used by global merchants. The system operates at scale and requires high reliability, security, and clear integration contracts. 

🎯About the project & role: 

You will work on Java-based backend services responsible for provider integrations and internal service communication. 
The role focuses on microservices development, API integrations, and stable backend evolution within an established engineering environment. 

Your contribution will help ensure consistent provider connectivity, system stability, and smooth rollout of new integrations. 

 
🔥What We Need From You: 

• 3+ years of experience in Java SE  (17/21) development 
• Strong experience with microservices architecture 
• Solid knowledge of: Spring framework, Maven 
• Experience with relational databases (MySQL, PostgreSQL) 
• Experience with NoSQL technologies (Redis, MongoDB) 
• Familiarity with AWS (EC2/SQS/SNS/ECS/EKS/S3) 
• Hands-on experience with (CI/CD pipelines, Docker) 
• Ability to translate user requirements into technical solutions 
• Experience using AI tools (ChatGPT, Claude, Cursor) for: Research, Drafting documentation 
• Fast learner and strong team player 
• English: Upper-Intermediate (B2) or higher for communication with international teams. 

📌Nice to have: 

• DynamoDB experience 
• Kubernetes experience 
• Experience with GCP 
• To be available from 5pm to 9pm Kyiv time (4–5 hours overlap with Central Time (CT))  
• Experience in Payments Infrastructure domain project 

• Bachelor’s or Master’s degree in Computer Science or related field. 

   

💼What We Offer: 

• Official military deferment (reservation) 
• A competitive salary that appreciates your skills and experience 
• Cozy atmosphere and modern approaches. We have neither bureaucracy nor strict management nor “working under pressure” conditions 
• Opportunity to implement your ideas, tools, and approaches. We are open to changes and suggestions aimed at improvement 
• Work on a strategic, large-scale international project with high visibility. 
• Remote-friendly culture with strong team collaboration. 

We are looking for a Trainee .NET / React Engineer to join a growing engineering team working on a complex, data-driven web platform in the commodity trading domain. 
This is a great opportunity to start your career on a real production system, learn from experienced engineers, and gain hands-on experience with modern backend and frontend technologies. 

The product is a multi-tenant web application used by professional traders and brokers to view, manage, and analyze trading activity, risks, and real-time data. The system also includes an Excel Add-In that integrates directly with the platform and external trading services. 

What you’ll do 

• Learn and work with .NET on backend services under the guidance of senior developers 
• Contribute to frontend development using React and TypeScript 
• Assist in implementing new features and improving existing functionality 
• Work with databases and understand how data is stored and processed in real systems 
• Participate in code reviews and team discussions to grow your engineering skills 
• Collaborate with QA, PM, and other developers in a cross-functional team 
• Gain exposure to real-time systems, background jobs, and integrations with external platforms 

What we’re looking for 

• Basic knowledge of C# / .NET fundamentals 
• Basic understanding of JavaScript and React (or strong motivation to learn) 
• Familiarity with HTML, CSS, and general web development principles 
• Understanding of how REST APIs work 
• Willingness to learn, ask questions, and grow as an engineer 
• Attention to detail and a responsible attitude to assigned tasks 
• English level sufficient to read technical documentation and communicate with the team 

Nice to have 

• Experience with TypeScript 
• Basic knowledge of SQL and relational databases 
• Familiarity with Git and version control workflows 
• Understanding of client–server architecture 
• Interest in fintech, trading systems, or data-intensive applications 

Why you’ll enjoy working with us 

• A supportive team that is open to mentoring junior engineers 
• Real-world project experience from day one 
• Clear learning path and professional growth opportunities 
• Exposure to modern technologies and enterprise-level architecture 
• Friendly team culture with transparent communication 
• Opportunity to grow into a Middle .NET / Frontend / Full-Stack Engineer 

If you’re at the beginning of your engineering journey and want to grow your skills on a real, challenging product — we’d be happy to meet you!

Note: Please apply for this position only if you have proven experience working with crypto, blockchain, or wallet development.

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a Middleware Engineer to work across the JavaScript/TypeScript layer, connecting modern applications with local AI inference engines and distributed systems. This role sits between product development and platform engineering, focusing on middleware, SDKs, and application layers that make local AI usable, secure, and scalable.

Responsibilities:

• Design, build, and maintain React-based applications (Expo / React Native / Electron)
• Develop clean, modular architectures using TypeScript across the stack
• Implement local-first / offline-first application logic and secure local data storage
• Integrate applications with local AI inference engines, SDKs, and real-time systems
• Work with REST APIs, WebSockets, RPC, and streaming data flows
• Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
• Build or extend native mobile modules (iOS / Android) when required
• Optimize performance for resource-constrained devices
• Write production-quality code with unit and end-to-end tests
• Collaborate in a fully remote, cross-time-zone team

Requirements:

Must have

• 5+ years of experience in fullstack software development
• Expert-level proficiency in JavaScript and TypeScript
• Strong experience with React (web, mobile, or desktop)
• Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
• Proven experience with distributed systems or event-driven architectures
• Strong understanding of real-time communication (WebSockets, streaming, RPC)
• Solid knowledge of networking, security, and production best practices
• Experience with databases, data modeling, and performance optimization
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Ability to work independently and communicate effectively in a remote environment

Nice to Have

• Experience with peer-to-peer technologies (libp2p, Hyperswarm, WebRTC)
• Familiarity with AI/ML inference APIs or OpenAI-compatible endpoints
• Experience integrating crypto or payment SDKs
• Background in AI platforms, SaaS, or developer tooling
• Knowledge of GPU resource management, ML infrastructure, or WebAssembly
• Contributions to open-source projects

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

We’re looking for a Back-End focused engineer to join a product team building scalable, event-driven services on AWS. You’ll work primarily on backend systems and microservices, with occasional frontend tasks as a nice bonus.

What you’ll do

• Design, build, and maintain backend services using Node.js and TypeScript
• Develop event-driven workflows with AWS Lambda, SNS, SQS, EventBridge
• Build and evolve microservices with a focus on scalability, reliability, and clean APIs
• Own infrastructure changes using Terraform / Infrastructure as Code
• Work with PostgreSQL (schemas, queries, performance considerations)
• Contribute to deployments and delivery pipelines (CI/CD), and collaborate on Kubernetes-based environments

• Partner with the team to troubleshoot production issues and improve observability and stability

   

Tech stack

• Backend: Node.js, TypeScript, AWS (Lambda, SNS, SQS, EventBridge), microservices
• Infrastructure: Terraform (IaC), Kubernetes, CI/CD
• Database: PostgreSQL
• Frontend (plus): React, Material UI, Redux, TypeScript

What we’re looking for

• Strong commercial experience building backend systems with Node.js + TypeScript
• Hands-on experience with AWS serverless and event-driven architecture
• Solid understanding of microservices (integration patterns, resilience, performance)
• Practical experience with Terraform (or another IaC approach) and modern delivery practices
• Confidence working with PostgreSQL
• Ownership mindset: you can take a feature from design to production and support it after release

Nice to have

• Frontend experience with React / Redux / Material UI
• Experience running workloads on Kubernetes
• Familiarity with improving CI/CD pipelines and developer experience

Working hours

• 09:00–18:00 UK time (11:00–20:00 Kyiv time)