Jobs at Djinni

We’re looking for a Senior Game Mathematician — someone who sees patterns where others see chaos, and who understands that behind every “big win” there’s elegant math. You’ll shape the core of our games: design math models, define volatility and player experience, and turn ideas into numbers that actually feel right.

We’re a team of people who left safe jobs to build something better. No bureaucracy, no pointless meetings — just sharp minds building games that stand out.

🎲 What you’ll do

• Design and develop math models for slot games — from raw concept to release;
• Prototype and simulate gameplay mechanics to test balance, volatility, hit rates, and potential;
• Reverse-engineer competitors’ math to understand and improve on the best mechanics in the market;
• Collaborate with producers and developers to bring your math to life — ensuring technical and creative integrity;
• Run simulations, build reports, and validate results in Excel or via your own scripts/tools;
• Prepare clear documentation for internal reviews, certification, and release;
• Analyze performance data of live games, providing actionable insights for tweaks and next iterations.

🧠 What you bring

• 3+ years of experience in slot game math design (or similar gambling / probability-based products);
• Advanced Excel and solid programming/scripting knowledge (Python, R, or similar);
• Deep understanding of RTP, volatility, hit frequency, max exposure, feature math, and player behavior;
• Obsessive attention to detail — and ability to explain complex systems clearly;
• Collaborative mindset: you enjoy working with creative and technical people to make something that just feels good;
• Fluent English.

💎 Nice to have

• Experience with internal math simulators or your own simulation tools;
• Familiarity with regulatory / certification requirements for game math;
• Curiosity for game design and player psychology — not just numbers.

🎁 Benefits

• 21 vacation days + 5 extra day-offs annually;
• 12 paid sick days;
• Fully remote format — work from anywhere you feel productive;
• Flexible schedule: start your day anytime between 08:00–12:00 CET;
• Fixed budget for health insurance and gym/fitness;
• Provided all required work equipment;
• Zero bureaucracy and direct communication with founders and C-level;
• Minimal meetings, async-friendly workflow;
• Startup energy: fast motion, creativity, and tight-knit communication;
• Business trips and team meetups several times per year;
• Multiple salary payout options (flexible formats);
• …And many more perks unlocked after we hit break-even.

Please note, 2+ years of experience in C++ is a mandatory for this position.

Requirements:

• 7+ years of hands-on commercial software development experience
• 3+ years of strong Scala experience
• 2+ years of solid C++ experience
• Upper-Intermediate (B2+) English with confidence in active communication (meetings, discussions)
   

Responsibilities:

• Take full ownership of SQL acceleration features — from architecture and design to implementation and measurable performance gains
• Design, build, and optimize Big Data processing algorithms using Scala, Java, and C++
• Develop high-performance, low-latency components at the intersection of Big Data and compiler technologies
• Work with custom DSLs and code generation frameworks to extend and enhance query execution capabilities
• Contribute to cross-language integrations (Java ↔ C++ via JNI) and drive system-wide performance improvements
  
   

About Fintech Farm
We are a UK fintech creating successful neobanks in emerging markets in partnerships with local traditional banks. The mission is to make banking services accessible, simple and fun to use worldwide and the goal is to launch neobanks in 50+ markets, serving 100m+ customers.
Our success builds upon a best-in-class product, customer experience, emotional engagement, viral marketing and deep credit-decisioning expertise across our product suite covering credit, payments, savings and investments. One of our founders also previously co-founded a highly successful Eastern European neobank with a multi-million customer base.
We launched our first market with Leobank in Azerbaijan in 2021, where we’ve already taken a leading market position. Our next market was Vietnam, where we launched Liobank in early 2023 and have also reached strong traction. We have several more markets on the roadmap in the next 12 months and are starting to build out teams there.

Why Fintech Farm is a great place to be
Our ambition. We are looking to become a leading consumer digital bank brand in each market we operate, making it easy for consumers to interact with their money. You could be a part of this exciting journey.
Our culture
Customers. We always go above and beyond to provide an amazing customer experience. We serve our customers the way we would want our mom to be served. And who said that banking has to be boring? We make our apps not just easy but fun to use.
People. We are all business partners in our company. Each of us thinks big, acts as if we own the place and never takes “no” for an answer. We work with strong individuals whom we empower and trust rather than micromanage. Common sense rather than formal policies prevails in all that we do. We always stay curious and open-minded.

Your Role:
As a Support Engineer (Line 3), you’ll be responsible for investigating issues deeply within logs, databases, and backend processes, providing fixes, and supporting stable product operation across multiple markets.

What You Will Be Doing:

• Analyzing issues based on logs, database data, and system processes
• Investigating complex technical incidents escalated from Line 2 support
• Providing bug fixing for production issues
• Collaborating with developers to identify root causes and implement fixes
• Writing technical documentation for known issues and their resolution paths
• Participating in post-mortem analysis to prevent recurring problems

Who You Are:

• Analytical and detail-oriented — you’re not afraid to dig deep into logs and code
• Proactive and accountable — you don’t wait to be told what to do
• A strong team player — you can explain your ideas clearly and listen to others
• Curious and open to learning — you love solving puzzles and improving things

Your Experience:

• Basic knowledge of Java or JavaScript
• Understanding of the software development life cycle
• Experience with databases (SQL knowledge required)
• English level above intermediate — you can read technical documentation and communicate with international teams

What we are offering

• Competitive salary is negotiable depending on the candidate’s level
• Share options
• We are still a start-up and more benefits are on the way

We’re looking for a Middle Full-Stack Developer with a strong backend focus to join our team.
The role is mostly backend-oriented (Django / Django REST Framework), with React on the frontend side. You’ll work on building and maintaining APIs, implementing business logic, and contributing to the frontend where needed.

Skills requirements:

• 2+ years of commercial experience as a Full-Stack or Backend Developer
• Strong experience with Django / DRF
• Hands-on experience with React
• Good understanding of REST APIs and databases

• Ability to work independently and communicate clearly within a team

   

Nice to have

• Experience with AWS in production
• Basic DevOps understanding
• Experience with async tasks (Celery or similar)

Key Responsibilities

• Develop and maintain backend services using Django / Django REST Framework
• Build and support REST APIs and core business logic
• Work with AWS infrastructure and cloud services
• Contribute to frontend development using React
• Collaborate with the team, participate in code reviews, and improve code quality

We offer:

• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Comfortable, spacious and well-equipped office in the city center;
• Team building activities, corporate events.

Dataforest is seeking a QA Engineer. If you are looking for a challenging project, and a friendly, supportive team ‒ you have found the right place to send your CV.

Professional requirements:

- 1+ year experience of testing web applications, in particular web applications developed with JavaScript on the frontend (React, Vue, Angular, pure JS) and REST API on the backend;

- Knowledge of software development life cycle;

- Experience in writing test documentation;

- Experience with teamwork tools such as JIRA, Confluence, Git/Bitbucket;

- Good communication skills and a positive mindset.

- Experience in an outsourcing company is required.

Nice to have:

- Knowledge in API testing using Postman;

- Experience with Stripe or other payment system;
- Experiance with Fintech.

We offer:

- Great networking opportunities with international clients, challenging tasks;

- Building interesting projects from scratch using new technologies;

- Personal and professional development opportunities;

- Competitive salary fixed in USD;

- Paid vacation and sick leaves;

- Flexible work schedule;

- Friendly working environment with minimal hierarchy;

- Comfortable, spacious and well-equipped office in the city center;

- Team building activities, corporate events.

Looking for a Django/DRF Developer to join the Dataforest team. If you are looking for a friendly team, a healthy working environment, and a flexible schedule ‒ you have found the right place to send your CV.

     Skills requirements:

• 2 + years of experience with Django and it's components;
• Experience with RESTful APIs, DRF and related libraries;
• Experience with Celery and async task management;
• Experience with SQL and query optimisation;
• Experience of writing tests;
• Able to work independently and excellent in communicating challenges and issues;
   

     Optional skills (as a plus):

• Experience with AWS services (EC2, API Gateways, Lambda, SQS);
• Experience with NoSQL databases (Redis, Elasticsearch, etc.);
• Experience of end-to-end implementation for new functionality;
• Experience with payment systems integrations (Stripe, Shopify, Recurly, Paypal, Braintree, etc.);
• Experience with chargeback management tools (Ethoca, RDR, CDRN, etc.);
• Understanding how to handle high load on projects;
  
  Key responsibilities:
• Design, develop and maintain payment gateway and other integrations;
• Design and develop new features and maintain existing functionality.
• Design and develop web applications using Python/Django/Celery.
• Design, develop and maintain RESTful APIs using Django Rest Framework (DRF).
• Write clean and well-structured code that is easy to read and maintain;
• Write and maintain technical documentation.
• Write and maintain unit tests to ensure code quality.
• Optimize and maintain the security, performance, and usability of the applications.
• Collaborate with the PM/Frontend/DevOps/QA and others team members.
  
  We offer:
• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Comfortable, spacious and well-equipped office in the city center;
• Team building activities, corporate events.

Looking for a Django/DRF Developer to join the Dataforest team. If you are looking for a friendly team, a healthy working environment, and a flexible schedule ‒ you have found the right place to send your CV.

     Skills requirements:

• 3 + years of experience with Django and it's components;
• Experience with RESTful APIs, DRF and related libraries;
• Experience with Celery and async task management;
• Experience with SQL and query optimisation;
• Experience of writing tests;
• Able to work independently and excellent in communicating challenges and issues;
   

     Optional skills (as a plus):

• Experience with AWS services (EC2, API Gateways, Lambda, SQS);
• Experience with NoSQL databases (Redis, Elasticsearch, etc.);
• Experience of end-to-end implementation for new functionality;
• Experience with payment systems integrations (Stripe, Shopify, Recurly, Paypal, Braintree, etc.);
• Experience with chargeback management tools (Ethoca, RDR, CDRN, etc.);
• Understanding how to handle high load on projects;
  
  Key responsibilities:
• Design, develop and maintain payment gateway and other integrations;
• Design and develop new features and maintain existing functionality.
• Design and develop web applications using Python/Django/Celery.
• Design, develop and maintain RESTful APIs using Django Rest Framework (DRF).
• Write clean and well-structured code that is easy to read and maintain;
• Write and maintain technical documentation.
• Write and maintain unit tests to ensure code quality.
• Optimize and maintain the security, performance, and usability of the applications.
• Collaborate with the PM/Frontend/DevOps/QA and others team members.
  
  We offer:
• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Comfortable, spacious and well-equipped office in the city center;
• Team building activities, corporate events.

Cosmolot is a Ukrainian product IT company that creates and develops an online digital entertainment platform. We build technology-driven solutions with a strong focus on security, transparency, and user comfort.

As a Data Analyst, you will work with data to uncover trends, monitor key metrics, and provide insights that help teams make informed business decisions.

Requirements

• 3+ years of experience as a Data/Marketing Analyst or in a similar role
• Strong practical knowledge of SQL (CTEs, window functions) and Excel
• Practical experience with BI tools (Power BI or similar)
• Ability to work with large datasets and collect, organize, and analyze large volumes of data
• Strong analytical thinking and attention to detail
• Strong communication and collaboration skills, with the ability to clearly present insights to business stakeholders

Your Responsibilities

• Analyze cross-functional data (marketing performance, player activity and behavior, conversion funnels, and cohorts) to support business decision-making
• Collect and prepare data from multiple sources for analysis and reporting
• Build and maintain reports and dashboards 
• Perform ad-hoc and exploratory analysis based on business requests
• Identify trends, patterns, and key drivers behind changes in marketing metrics
• Present analytical insights and findings to stakeholders

Nice to Have

• Experience in gaming and traffic or other product verticals
• Experience with Google Analytics

What We Offer

• Work in a strong team of professionals and genuinely supportive people
• Opportunities for professional growth and development
• Flexible working hours
• Medical insurance
• Sports expense compensation
• Psychological support
• Free language classes (English, Spanish, and German)
• 18 working days of paid vacation, paid sick leave, and sick days
• Regular team buildings and corporate events
• All necessary equipment for comfortable work

Admiral Studios is a fast-growing Ukrainian IT outsourcing company, specializing in web development, mobile development, UI/UX, and SEO.

We embrace the latest and most advanced technologies: Node.js, React, Laravel, Shopify, Python, and WordPress.

We create quality projects for clients in the US, Europe, the UK, and Canada 🌍, especially Healthcare, Real Estate, and E-commerce projects.

Currently, our team consists of more than 60+ skilled experts 👨‍💻, and we are constantly growing.

Now, we’re looking for an Outreach Specialist ⭐️ with hands-on experience who’s ready to take ownership of outbound campaigns, work with hypotheses, and contribute to measurable business results.

For a perfect match, we expect 🎯

• 1+ year of experience in marketing, growth, lead generation, or outbound campaigns
• Hands-on experience with Email marketing campaigns and basic automation tools
• Confident use of LinkedIn (Sales Navigator, filters, outreach workflows)
• Ability to launch, manage, and optimize LinkedIn and Email campaigns
• Experience collaborating with Sales teams — supporting outreach activities, validating leads, assisting across directions
• Strong hypothesis-driven mindset: ability to generate ideas, test them, analyze results, and iterate
• Understanding of B2B marketing and client acquisition logic
• English level: Intermediate+ (written communication)

Nice to have 💎

• Experience building or optimizing marketing or lead generation processes
• Familiarity with outreach or lead generation automation tools
• Experience working with additional channels or segmentation approaches
• Analytical thinking and willingness to experiment
• Understanding of IT / tech / digital environment
• Experience working with the Ukrainian B2B market

Duties & Responsibilities 💼

• Launching, configuring, and managing LinkedIn and Email outreach campaigns
• Testing new ideas, channels, segments, and messaging approaches for client acquisition
• Working closely with the Sales team:
  • supporting outreach tasks
  • validating and qualifying leads
  • maintaining campaign flow
• Researching and identifying relevant target companies and contacts
• Preparing and running targeted outbound campaigns for specific niches
• Analyzing campaign performance and key metrics
• Proposing improvements to workflows and enhancing overall campaign performance

Why Join Admiral Studios?

⭐️Growth-Oriented Environment – value efficiency, flexibility, and results

🤝Team Spirit – Regular corporate online & offline events to keep the team connected
📚Professional Development Support – we provide:

• A structured Performance Review system
• Access to an internal knowledge library
• Career growth opportunities with a clear development plan
• A budget for improving work processes and implementing new ideas

🧘Work-Life Balance – Enjoy a flexible work schedule and a fully remote work model
✅Paid Time Off – 20 vacation days + 10 sick leave days per year

Hiring steps: Screening — Tech Interview — СТО Interview — Job Offer 

If your experience and skills match our candidate scorecard, the recruiting team will contact you within 5 business days 💙

Don't forget to provide your Telegram nickname for contact

Location: Remote / Europe / CIS
Employment: Full-time

From merchant settlements to PSP integrations, from reconciliation flows to financial strategy - this is where fintech finance meets high-risk payments.

We are launching a new payment company focused on iGaming and other high-risk industries.

The company will provide payment infrastructure for merchants operating in complex markets: processing, settlements, multi-PSP routing, and global payment orchestration.

To lead the financial architecture of this business, we are looking for a Chief Financial Officer (CFO) who understands the mechanics of payment flows, reconciliation logic, and financial risk management in a high-volume fintech environment.

This role requires deep expertise in payment operations finance, settlements, reconciliation, and financial control across multiple PSPs and partners.

Your Mission

Build and lead a financial system that ensures accuracy of settlements, transparency of payment flows, and financial stability in a high-volume payment environment.

You will oversee everything from PSP settlements and merchant reconciliations to financial strategy and operational finance structure.

What You Will Do

Financial Strategy & Leadership

• Define and execute the financial strategy of the company
• Build the financial structure for a fast-growing payment business
• Support strategic decisions on markets, partners, and payment infrastructure
• Work closely with CEO and leadership on scaling the company

Payment Finance & Settlements

•  Oversee merchant settlement flows and payout structures
• Manage reconciliation of transactions across PSPs, payment gateways, and banking partners
• Ensure accuracy of processing volumes, commissions, fees, and payouts
• Monitor settlement cycles and payment provider balances
• Control financial flows between merchants, PSPs, and internal infrastructure

Reconciliation & Financial Control

• Build and oversee reconciliation processes across payment systems
• Ensure daily, weekly, and monthly reconciliation of: PSP balances, merchant settlements, payment gateway reports, internal transaction ledgers, fiat and crypto payment flows (bank accounts, wallets, and on-chain transactions)
• Identify discrepancies in payment flows and resolve them quickly
•  Implement financial controls for high-volume transaction environments

Reporting & Financial Transparency

•  Develop internal financial reporting for leadership and investors
• Track revenue streams, processing volumes, margins, and partner commission
•  Build forecasting models based on transaction flows and payment volume
•  Prepare financial reports for holding management and partners

Risk Management

• Identify operational and financial risks in payment flows
• Ensure financial stability across multiple PSPs and acquiring partners
• Monitor exposure related to chargebacks, rolling reserves, and settlements
• Work closely with compliance and operations teams

Process & Financial Infrastructure

• Build structured finance processes suitable for a payment infrastructure company
• Design reconciliation and reporting systems between PSPs, merchants, and internal platforms
• Implement financial monitoring tools and controls

• Coordinate with accounting and external finance partners where needed

   

Ideal Candidate Profile

Experience & Background

• 7+ years in finance leadership roles
• Experience as CFO / Head of Finance / Finance Director in fintech, payments, or iGaming
• Strong understanding of payment flows, PSP infrastructure, and settlement mechanics
•  Experience working with high-risk merchants (iGaming, crypto, forex, etc.) is a strong advantage
• Experience managing finance in high-volume transaction environments

Hard Skills

• Deep understanding of payment settlements and reconciliation
• Experience with PSP reporting and payment provider financial flows
• Financial modeling and forecasting in transaction-based businesses
• Strong knowledge of financial controls and operational finance
• Experience working with multi-currency payment systems

Soft Skills

• Structured and analytical mindset
• Ability to build finance systems from scratch
• Comfortable operating in a fast-moving fintech environment
• Ownership mentality - numbers must always reconcile
• Clear communicator between finance, operations, and leadership

Why Join US?

• Opportunity to build the financial architecture of a new payment company
• Direct involvement in high-risk payment infrastructure
• High-impact executive role with strategic influence
• Remote-first, performance-driven culture

If you understand how payment flows actually work - from transactions to settlements - and can bring financial clarity to high-risk fintech operations, we would love to talk.

Requirements:
— 1 year of commercial experience with Python and Django;

— 1 year of commercial experience with HTML, CSS, HTMX, JavaScript
— Ability to work with databases (not only through ORM);
— Django REST Framework & Celery knowledge;
— Understanding of REST principles;
— The knowledge of basic HTTP principles;
— Experience with git & github;
— Knowledge of the agile & scrum the basics;
— Ability to communicate in English.

Nice to Have:
— Skills in React.js / Next.js; FastAPI
— Advanced knowledge of PostgreSQL;
— Experience with Redis;
— Familiarity with MongoDB;

We are looking for a skilled Android Developer to join our FinTech team and help build secure, high-performance mobile applications used in real financial scenarios. You will work closely with product, backend, and QA teams to deliver a reliable and intuitive Android experience.

Details

Location: Sofia, Bulgaria (office in city centre)

Employment Type: Full-time, remote

Start Date: ASAP

Language Requirements: English — B2 or higher

Key Responsibilities

Design, develop, and maintain Android applications for FinTech products

Write clean, scalable, and testable code following Android best practices

Integrate mobile applications with backend services and REST APIs

Collaborate with product managers, designers, backend developers, and QA engineers

Ensure high performance, stability, and security of mobile applications

Participate in code reviews and contribute to technical decision-making

Support release cycles, bug fixing, and continuous optimization

Stay up to date with Android platform updates and emerging technologies

Requirements

4+ years of professional experience in Android development

Strong knowledge of Kotlin (Java is a plus)

Experience with Android SDK, Jetpack components, and modern Android architecture (MVVM, Clean Architecture)

Hands-on experience integrating RESTful APIs

Solid understanding of mobile security principles and best practices

Experience with Git and version control workflows

Familiarity with Agile/Scrum development environments

Strong analytical and problem-solving skills

Ability to work independently while collaborating effectively in a team

English level B2 or higher

Nice to Have

Experience in FinTech, banking, payments, or lending applications

Experience with Coroutines, Flow, or RxJava

Knowledge of CI/CD pipelines for Android applications

Experience with automated testing (JUnit, Espresso, UI tests)

Experience publishing apps to Google Play

Job Description

Qualifications
You will succeed in this role if you:
● Have at least 3 years of experience with On Prem and/or Cloud Providers (AWS, Azure, or GCP), with Azure being a must.
● Have worked with Azure cloud environments to manage and deploy Java applications built on Spring Boot and Spring MVC.
● Possess deep experience with Spring Batch for high-volume data processing and Spring Data (referenced as String Data) for robust RDBMS/NoSQL integration.
● Have a proven track record of setting up and configuring CI/CD pipelines using tools such as Jenkins or GitHub Actions to enforce the 80% unit test coverage requirement.
● Understand container technology, such as Docker and its ecosystem, for packaging Spring-based microservices.
● Have experience with build and delivery processes for enterprise web applications and complex backend systems.
● 5+ years of experience working on large development projects using TypeScript and modern frontend ecosystem tools.
● 3+ years of experience building high-performance web applications using Next.js, including deep knowledge of App Router, Server Components, and SSR/SSG patterns.
● 3+ years of experience implementing enterprise-grade UI components using the Hitachi Design System (or similar enterprise design systems) to ensure visual and functional consistency.
● 3+ years of experience building robust unit and component tests using tools like Jest, Vitest, or React Testing Library to meet the 80% line coverage mandate.
● Are always looking for ways to automate testing, deployment, and regression suites.
● Can explain the advantages and disadvantages of containerization in a microservices architecture.
● Are interested in improving the software delivery lifecycle using frameworks like Kubernetes and Terraform.
● Are comfortable working in polyglot environments (debugging code in Java, Node.js, Python, Groovy, or Golang).
● Understand the benefits of static code analysis, open-source scanning, and mandatory peer reviews by at least two engineers.
● Are ready to help inform “build vs. buy” decisions and participate in Change Control Board (CCB) reviews for scope or schedule shifts.
● Could field questions on topics like “DevOps,” “Microservices,” “Continuous Delivery,“ or “Batch Processing.”
● Understand RBAC, the principles of least privilege, and AI data security protocols to ensure client data is not used for model training.
● Are familiar with both NoSQL (Mongo, Redis) and RDBMS (Postgres, MySQL, SQL Server) systems, specifically utilizing Spring Data for abstraction.
● Understand SLIs, SLOs, and Error Budgets and how to apply the four golden signals to backend services.
● Are comfortable challenging the status quo, thinking outside the box, and adhering to a formal Definition of Done.

● Have experience with or the desire to lead others, including managing technical expectations with the Program and Product Manager.
● Work well with others and enjoy the journey of delivering high-quality products.
● Enjoy working in and learning to use a wide variety of technologies and languages.

Nice to have
● Experience building and managing scaled architectures like Microfrontends, Monorepos (Turbo/Nx), and shared internal component libraries.
● Experience managing and evolving CI/CD pipelines (Jenkins, GitHub Actions) and related DevOps tools.
● Experience building QA test automation (Cypress, Playwright) and ensuring software conforms to designs verified by the UX Lead.
● Experience building and maintaining application analytics, real-user monitoring (RUM), and securing frontend applications.
● Experience building Authentication and Authorization (NextAuth, OAuth) for protected enterprise applications.

Job Responsibilities

• Design and develop enterprise applications using Java (Spring Boot, Spring MVC, Spring Batch) and modern frontend technologies (TypeScript, React, Next.js).
• Deploy and manage applications in Azure cloud environments and support containerized microservices using Docker.

• Build and maintain CI/CD pipelines (Jenkins, GitHub Actions) and ensure high code quality and testing standards.

   

• Integrate backend services with RDBMS and NoSQL databases using Spring Data.

   

• Support microservices architecture, container orchestration, and infrastructure automation using tools like Kubernetes and Terraform.

   

• Collaborate with stakeholders and engineering teams to deliver scalable solutions and participate in architecture and technical decision-making.

   

• Contribute to DevOps practices, monitoring, and reliability using concepts such as SLIs, SLOs, and error budgets.

   

• Mentor engineers and support delivery planning in collaboration with Product and Program Managers.

Department/Project Description

The client is one of the largest energy providers in the United States, operating across power generation, transmission, and distribution, and driving innovation in grid modernization, digitalization, and AI-enabled energy infrastructure. They play a critical role in supporting large-scale data centers and future AI factories with reliable, secure, and efficient energy solutions.

We are currently looking for POLISH SPEAKING AQA Engineer (JS) to join a fintech project in a fast-paced startup environment. The role is focused on JavaScript-based automation with strong emphasis on fintech domain experience. An automation expert is not strictly required. Strong QA engineers with some exposure to automation and willingness to work on automated testing will also be considered.

Project Details

Start: Immediate

Duration: 3–6 months (approximately 4 months initially)

Workload: Full-time (160 hours/month)

Work Model: Hourly wage

Locations: Ukraine or Europe

English – Fluent 

Polish Language: Mandatory

Role Overview

This is a short-term engagement (3–6 months) with immediate start. The client operates in a startup atmosphere and expects proactive, independent professionals who can quickly gather requirements and take ownership of quality processes. While automation experience is required, the main priority is fintech background and strong JavaScript expertise. Experience with Jest and Maestro is relevant but has lower priority compared to domain knowledge and JS proficiency.

Key Requirements

5+ years of experience in QA / QA Automation

Strong JavaScript knowledge (Middle+ / Senior level)

Experience in fintech projects (high priority)

Experience with REST APIs

Experience with Jest – MUST 

Experience with Maestro - MUST

Very good English (Upper-Intermediate)

Upper-Intermediate Polish (mandatory – candidate must speak Polish fluently)

Ability to work independently in a startup environment

Proactive mindset and strong communication skills

Technology Stack

JavaScript

Jest

Maestro

REST API

Important Note

After initial interviews, expectations shifted — the client’s current top priority is:

Strong fintech background

Strong JavaScript expertise

Experience with Jest and Maestro is beneficial but secondary compared to fintech + JS proficiency.

About Us:

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Senior Backend Develope to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.

Key Responsibilities:

• Architect and develop robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• Design, implement, and manage highly scalable database solutions using PostgreSQL (AWS RDS) and caching strategies with Redis.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Manage and optimize containerization and deployment processes with Docker, including building and pushing to registries, and implementing CI/CD pipelines using GitLab runners.
• Implement monitoring and observability using Prometheus and Grafana to ensure system reliability and performance.
• Collaborate with stakeholders to gather business requirements and translate them into technical solutions, driving discussions at the architecture and implementation levels.
• Lead troubleshooting and debugging efforts to resolve complex backend issues and optimize system performance.
• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• Development and maintenance of a high-level engineering culture within the team.

Qualifications:

• Minimum of 5 years of experience in backend development with strong proficiency in Node.js, NestJS, and related technologies.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• Expertise in building and managing microservices architectures and a monorepo setup.
• Extensive experience with PostgreSQL (AWS RDS), Redis, and other backend data storage and caching technologies.
• Strong proficiency in AWS cloud services including but not limited to SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Solid understanding of Docker, CI/CD pipelines, and experience with GitLab runners.
• Experience with monitoring tools such as Prometheus and Grafana.
• Proven ability to document backend architectures, designs, and processes clearly and comprehensively.
• Excellent problem-solving skills and attention to detail, with a passion for creating high-quality, performant code.
• Ability to work effectively both independently and as part of a team in an agile environment.
• Strong communication skills with the ability to interact professionally with stakeholders at all levels.
• English at Upper-Intermediate level and above.

What We Offer:

• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.