Jobs

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications, and regulatory technologies.

We are looking for a Senior Business Analyst!  

Requirements: 
- Exceptional core Business Analysis skills with a proven track record of eliciting, structuring, and writing clear, high-quality technical and functional requirements.
- Previous experience working in complicated, dynamic environments with a high level of uncertainty and complex cross-unit dependencies.
- Deep understanding of software development lifecycles (SDLC) and Agile methodologies.
- Proven experience drafting BRDs and decomposing them into backlog items — Epics, User Stories, and Acceptance Criteria.
- Solid knowledge of BPMN, UML, and system/block diagrams.
- Ability to communicate effectively with business stakeholders in terms of value and KPIs, and with tech teams on a technical level.
- Strong ability to break down complex business logic into actionable development tasks. 

Will be a plus: 
- Productive experience in the iGaming industry, specifically with casino games and slot mechanics.
- Knowledge of data analytics and familiarity with BI tools (Tableau, Power BI, Looker, etc.).
- Experience with API documentation.
- Familiarity with A/B testing and UX research principles.
- Knowledge of BABOK principles would be an advantage.

Responsibilities: 
- Drive the business analysis activities for launching a new domain, ensuring all product needs are accurately captured, structured, and documented.
- Act as the primary bridge and mediator between the Product team and the Technical team, translating product vision into detailed technical requirements.
- Translate business needs into actionable deliverables for development, including documentation, backlog items, epics, and user stories.
- Actively manage and groom the backlog, clarify complex logic for developers, and ensure the final technical delivery aligns with product expectations.
- Ensure business stakeholders have the required level of transparency on progress, priorities, and decisions throughout the product lifecycle.

Our benefits to you:

☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided

🏖Paid vacations, sick leave, personal events days, days off

💵Referral program — enjoy cooperation with your colleagues and get the bonus

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences

🎯Rewards program for mentoring and coaching colleagues

✈️In-house Travel Service

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more

🎳Other benefits could be added based on your location 
 

Is game engine logic and RTP calculation your superpower? There’s a chance to join a fresh team at a leading iGaming company as a Senior Software Engineer. TOP conditions await: above-market salary, quarterly bonuses, unlimited PTO, and a stable home for years to come!

This role sits at the intersection of engineering, game mathematics, platform, and compliance. You’ll work on the tools, frameworks, and services that enable our mathematicians and game teams to build, validate, run, and monitor game logic in production.

This position is about deep ownership of a very specific technical domain: game engines, mathematical packages, simulation data, RTP monitoring, round details, and integrations with games developed both internally and by external studios.

You’ll be part of a small, experienced team with a high level of responsibility. The impact of this work is direct: incorrect game logic, missing round details, or inaccurate RTP monitoring can affect game delivery timelines, business performance, and regulatory readiness.

If you enjoy working close to complex domain logic, reviewing technical implementations, understanding how games work under the hood, and owning systems where precision matters – this role will feel like home.

Main Responsibilities

– Own, maintain, and evolve company’s Game Engine domain

– Work on internal frameworks and libraries used by mathematicians to implement game logic and mathematical packages

– Review and validate code written by mathematicians, ensuring quality, correctness, maintainability, and proper usage of internal frameworks

– Contribute to the development and support of game engines used to run mathematical logic within our platform

– Support integrations with external game studios by helping build wrappers and bridges between third-party game implementations and Playson’s platform

– Work with data structures and protocols that connect game logic with frontend and backend systems

– Contribute to RTP monitoring processes, including validation of production transaction data against simulation data and expected mathematical behaviour

– Support and evolve tools used for mathematical review, simulations, data files, monitoring, and alerting

– Implement and maintain round details logic required for regulated markets, ensuring that detailed game round information can be correctly provided to partners and regulators

– Collaborate closely with mathematicians, backend engineers, platform teams, compliance stakeholders, and product representatives

– Participate in code reviews and technical discussions to ensure a high engineering standard across the Game Engine domain

– Investigate issues related to game logic, mathematical validation, monitoring, and engine behaviour

– Participate in minimal on-call responsibilities related to the systems owned by the team, mainly around monitoring, alerts, and domain-specific incidents

– Take ownership of a highly specialised area where quality, accuracy, and attention to detail are essential

Mandatory Requirements

– Strong software engineering experience, ideally in backend, game engine, gaming, gambling, betting, or simulation-heavy environments

– Solid experience with Node.js/TypeScript, or strong expertise in another OOP language such as C++, Java, C#, Go, or Python

– Good understanding of software architecture, code quality, testing, debugging, and maintainability

– Experience reviewing complex code and providing clear technical feedback

– Ability to understand domain-specific logic and work with technical systems where business rules, mathematics, and engineering are closely connected

– Strong problem-solving skills and ability to work with complex, non-standard technical challenges

– Experience working with production systems where reliability, accuracy, and correctness are critical

– Understanding of backend systems, APIs, data flows, and service-to-service communication

– Ability to collaborate closely with non-engineering technical experts, especially mathematicians or domain specialists

– Strong ownership mindset and willingness to become a key expert in a narrow but highly important technical domain

– Product-oriented thinking, with an understanding that games are the core product and engineering decisions directly affect delivery, quality, and compliance

– English communication skills sufficient for working in an international environment

Nice to Have

– Experience in iGaming, gambling, betting, game development, or casino games

– Experience working with game engines, mathematical engines, simulation tools, or game logic frameworks

– Background in C++ or experience working with legacy C++ systems

– Experience with mathematical models, probability-based systems, simulations, random generators, or RTP-related logic

– Understanding of regulated markets and compliance requirements in iGaming

– Experience with ClickHouse or other analytical/columnar databases

– Experience with monitoring, alerting, and production diagnostics

– Experience with AI-assisted code review or automated validation tools

– Knowledge of microservices architecture and distributed systems

– Familiarity with Kafka, gRPC, Kubernetes, or AWS

– Experience integrating third-party games, external studio products, or wrapper-based solutions

– Ukrainian language skills would be a plus

We offer

– Competitive Salary

– Quarterly Bonuses

– Unlimited Paid Time Off

– Unlimited Paid Sick Leave

– Remote & Flexible Working

– Private Medical Insurance

– Financial Support for Life Events

– Professional Development Budget

– International Exposure

– Regular Company Events

*Benefits may vary depending on location and contractual agreement

Recruitment Process

– HR interview

– Technical interview (with Live coding)

– Final interview

Devox Software is looking for a Senior QA Automation Architect to join a dedicated engagement, building an open-source test automation framework from scratch using Playwright for a Salesforce-based SaaS platform.

Project: The engagement focuses on designing and implementing a greenfield Playwright automation framework for a Salesforce-based SaaS platform, covering UI and API test layers with GitHub Actions CI/CD integration.

Responsibilities:

• Design, build, and maintain a Playwright-based test automation framework from the ground up (UI and API layers)
• Architect a scalable framework structure (page objects, fixtures, reusable utilities) suited to a Salesforce-based application
• Implement API test coverage alongside UI automation
• Integrate the framework into CI/CD pipelines using GitHub Actions
• Collaborate with cross-functional engineering and QA teams to define testing strategy and coverage priorities
• Maintain high code quality through reviews, documentation, and best practices

• Troubleshoot and resolve flaky tests, environment issues, and framework-level bugs

   

Requirements:

• 5+ years of experience in QA automation, with a strong track record as an automation architect or SDET
• Proven hands-on expertise with Playwright (TypeScript/JavaScript)
• Solid experience with API testing tools and methodologies
• Experience setting up and maintaining CI/CD pipelines, ideally with GitHub Actions
• Experience testing Salesforce/Lightning-based applications is a strong advantage
• Strong understanding of test architecture design and framework best practices (Page Object Model, reusable components, reporting)
• Ability to work independently and drive a greenfield project with minimal oversight
• Strong communication and collaboration skills
• Upper-Intermediate English or higher
• Available for a dedicated engagement with an August start

• Please include a GitHub repository or code sample of a Playwright framework you've built with your application (a strong plus if it includes testing of a Salesforce application)

   

What We Offer:

• 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

Hello and good vibes to everyone reading this!

We’re currently looking for a Middle+ Java Developer to join our team in a full-time collaboration format.

About us:
Mind Studios specializes in mobile and web app development, helping businesses unlock their potential and turn ideas into profitable products.
Our key domains include: Real Estate, Logistics, Healthcare, Fitness, and Mental Health.

We are looking for a person on a certain e-government project. Roughly we assume that the contract can last from September 2026 till the end of March 2027 with optional prolongation.

About the Project:
The project is a large-scale digital platform from scratch designed to support the administration of various social benefits Western European country through a modular and scalable architecture. The system is structured around two key layers:
— Horizontal functions – these are shared core services used across all benefits (e.g., application review, eligibility checks, document management, communication, payment processing, appeals).
— Vertical functions – these represent individual benefit flows, each with its own set of rules, data requirements, and validation logic.

At the heart of the project is the User Profile, which serves as a central data repository. It collects and stores key personal and household information in a reusable way, allowing different benefit applications to retrieve data without asking the user to re-enter the same information.

In this role, you will need:
— clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently;
— experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations);
— ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation;
— analytical thinking, problem-solving abilities, and strategic approach to technical challenges.

What is important to join us:
Must-have requirements
— advanced English, both spoken and written. The developer must communicate confidently with native English-speaking colleagues, participate actively in meetings, clarify requirements, explain technical decisions, and write clear PR descriptions and documentation;
— experience with Java, including modern Java features; the project currently uses Java 21;
— strong commercial experience with Spring Boot, Spring Web/MVC, Spring Data JPA, and Hibernate;
— solid understanding of:

• transactions and entity lifecycle;
• database constraints and data integrity;
• concurrency and idempotency;
• date/time handling;
• validation and error handling.

— strong SQL and relational-database skills. The candidate must be able to investigate existing data, diagnose duplicates and inconsistent states, and design safe schema or query changes;
— experience maintaining and debugging a large existing codebase or multi-module system, including tracing behaviour across services and shared libraries;
— ability to understand complicated business rules and translate incomplete or changing requirements into predictable implementation;
— strong REST API design and integration experience, including request/response contracts, backward compatibility, and OpenAPI;
— experience writing meaningful unit and integration tests with JUnit and Mockito. Regression tests should accompany bug fixes;
— good Git and pull-request practices: focused changes, readable commits, careful reviews, and constructive technical discussion;
— demonstrated ownership: independently reproducing problems, finding root causes, considering edge cases, and communicating risks before implementation;
— willingness to question ambiguous requirements instead of silently making assumptions;
— ability to work effectively in a distributed, highly communicative team.

Nice-to-have requirements:
— commercial experience with Oracle Database and Oracle-specific SQL behaviour;
— experience with Flyway database migrations;
— experience with Kafka or another event-driven messaging platform;
— knowledge of Spring Security, OAuth2/JWT, and Keycloak;
— experience with Camunda/Zeebe or BPMN-based workflows; 
— experience with caching, particularly Caffeine;
— familiarity with Azure DevOps, Maven multi-module builds, Sonar, PMD, Checkstyle, and dependency/security upgrades;
— knowledge of audit logging, personal-data protection, and security-sensitive applications.

About stages:
1st stage: pre-interview with a recruiter;
2nd stage: interview with Team Lead and People Ops;
3rd stage: english test;
4th stage: interview with customer;
5th stage: offer.

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

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets. We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Trusted by 200+ companies, managing $150M+ in ad spend.
 

Scale faster. Grow smarter.
 

We are currently looking for a Product Marketing Manager (Funnels & Email Automation) who will own the development and optimization of web funnels and lifecycle communication. This role focuses on improving conversion rates, scaling experimentation, and building high-performing growth systems for our digital products across international markets.
 

Key Responsibilities

• Own and optimize end-to-end web funnels (quiz → onboarding → paywall → activation).
• Analyze user behavior and identify conversion bottlenecks across the funnel.
• Design and run A/B tests and growth experiments to improve key funnel metrics.
• Launch and scale multiple funnel experiments weekly across different markets.
• Build and optimize lifecycle email flows including onboarding, activation, retention, and reactivation.
• Work with product analytics tools to track performance and identify growth opportunities.
• Collaborate closely with product, engineering, design, performance marketing, and creative teams.
• Ensure strong alignment between ad messaging, landing pages, and product experience.
• Conduct user and market research to better understand user motivations and behavior.
• Monitor and report on key performance metrics such as CPA, conversion rate (CR), and predicted lifetime value (pLTV).
   

Requirements

• 3+ years of experience in Product Marketing, Growth Marketing, Lifecycle Marketing, or similar B2C roles.
• Proven experience building and optimizing web funnels for digital products.
• Demonstrated success improving conversion metrics through experimentation and A/B testing.
• Strong analytical mindset and ability to work with funnel metrics and user behavior data.
• Hands-on experience with email marketing and lifecycle automation (flows, segmentation, triggers).
• Experience with product analytics tools such as Google Analytics, Looker Studio, Amplitude, PostHog, or similar platforms.
• Good understanding of payment infrastructure and web funnel setups.
• Strong collaboration skills and ability to work in cross-functional teams.
• Upper-Intermediate English or higher.
   

Nice to Have

• Experience working with international markets (US, EU, UK, LATAM).
• Background in companies with a strong performance marketing culture.
• Experience with subscription-based digital products.
• Familiarity with EdTech, AI-driven products, or lifestyle apps.
   

What We Offer

• Remote work
• Competitive compensation
• Flexible working hours (start between 9:00–11:00 CET)
• All necessary equipment
• Paid vacation and sick leave
• Educational support (certifications, courses, and training reimbursement)
• Company events and internal knowledge-sharing initiatives
• Transparent communication and an open feedback culture.

We are looking for a Senior iOS Engineer to join our team!

Our client is one of the world's largest fashion retailers selling in 215 markets through its online platform or its 6,477 stores in 95 markets. By working closely together as a single company globally focused on the key elements of fashion production – design, manufacture, distribution, and retail.

All the production is founded on three pillars – flexibility, digital integration, and sustainability.

Requirements:

• 5+ years of proven commercial experience with UIKit and Swift
• Extensive experience with SwiftUI
• Solid Object-Oriented Design and Analysis (OOD/OOA) skills and modern development practices
• Deep knowledge of Clean Architecture and Domain-Driven Design (DDD)
• Working knowledge of iOS interface guidelines and best practices
• Experience with Unit testing, snapshot testing, and automation testing
• Test-Driven Development (TDD) and Behaviour-Driven Development (BDD)
• Experience with CI/CD, code quality gates, and code coverage
• Strong experience with modular architecture
• Knowledge of UI architectural patterns: MVC, MVVM, MVP
• Deep Git version control knowledge: feature flags, branching strategies, GitFlow
• Working experience in an Agile environment with a clear understanding of Agile methodologies
• Upper-Intermediate / Advanced English level
   

Responsibilities:

• Making sure to follow and guarantee alignment with the company's global architecture
• Communicate with cross-functional teams about service integration
• Promote best practices to improve the quality of our code and processes and ensure technical excellence
• Research and evaluate technical options to implement business requirements
• Work in close contact with the Product Owner and support in the technical definition of product backlog items
• Provide system or technical development expertise to the team
• Guarantee continuous deployment, write qualitative, maintainable code with extensive test coverage in a fast-paced professional software engineering environment

• Suggest technical and functional improvements to add value to the product

   

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

We're looking for a Sr Backend Engineer with deep Django and real production experience in Celery and Redis, to take full ownership of the core web platform. Concretely: the dashboard backend, the REST API, the async job layer, and the access-control model behind them. Today the lead and the CTO carry this on top of architecture and integrations - that split does not scale, and this role ends it.

You own the application layer end to end. Day to day: you pick up a piece of the platform, design how it should behave, build it in Django/DRF, move the heavy work into Celery tasks, make sure the queue behaves under failure, wire the permission and audit layer around it, cover it with pytest, and ship it. No "someone else will handle the async part". You handle it.

One thing to be clear about: commands issued from this platform reach real industrial equipment in the field. That is why access control and audit logging are must-haves here and not a checkbox - a wrong permission or an unlogged action has consequences outside the database.

What you'll do

• Develop and own the core Django application: dashboard backend, REST API, async job layer, access-control model
• Design and optimize ORM queries - and know what SQL your querysets actually produce
• Write and deploy migrations against live schemas without downtime
• Build and maintain the Celery layer: task design, periodic jobs, retries, idempotency, queue routing
• Design and enforce the role model across API and admin - least privilege, deny by default
• Build audit logging as a tamper-evident trail: who, what, when, from where, with what result
• Write tests as part of the work, not after it

Must have

• 5+ years of production Django. This is the core of the role and the interview goes deep here:
  • ORM at a strong level: query optimization, select_related/prefetch_related, annotations, reading the generated SQL
  • Migrations on live schemas: writing, squashing, deploying without downtime
  • DRF: serializers, viewsets, permissions, versioning API contracts
  • Django internals beyond tutorials: middleware, signals (and when not to use them), custom management commands, admin as a real tool
• 3 years of Celery in production - not "used it once": task design, celery beat, retries and idempotency, queue routing, surviving worker failures without losing or duplicating work
• 3 years of Redis in production - as Celery broker/result backend and as a cache: invalidation strategies, TTLs, locks, and a clear sense of what must never live only in Redis
• RBAC at a strong level: designing role models (dispatcher vs. operator vs. admin) on least privilege, Django groups/permissions, DRF permission classes, object-level permissions, enforcement on both API and admin
• Audit logging: every privileged action and command logged as an evidence-grade trail
• Solid Python fundamentals
• PostgreSQL: indexes, transactions, reading a query plan
• Testing as the norm: pytest, testable code, tests for views/serializers/tasks
• English B1+ - spoken, on technical topics

Nice to have

• FastAPI / Pydantic v2, asyncio
• Docker / Docker Compose, CI pipelines
• TimescaleDB or another time-series store; MongoDB
• OPC UA, Modbus, or other industrial protocols
• drf-spectacular / schema-first OpenAPI workflows
• Exposure to security standards such as IEC 62443 or NIS2 - the audit and access-control requirements originate there

We are looking for a strong Senior Business Analyst / System Analyst who can structure complex business processes, translate operational and product needs into clear requirements for the development team, and act as a key link between business, product, and engineering.

This role is for someone who can deeply understand processes, identify dependencies between system modules, quickly navigate complex scenarios, and turn them into a logical, clear, and implementable structure.

Product: a ticketing / event-tech platform for the European market within the e-commerce domain, with multiple integrations, operational scenarios, automations, and AI-driven processes.

Requirements

• 5+ years of experience in IT as a Business Analyst / System Analyst / Product Owner
• Experience with complex systems, multi-module products, or enterprise solutions
• Experience with e-commerce products, marketplaces, transactional platforms, or products with multiple user and operational scenarios
• Understanding of e-commerce processes: user journey, checkout, orders, payments, refunds, availability / inventory, notifications, customer support flows
• Experience analyzing and documenting interactions between modules, services, APIs, and external integrations
• Understanding of SDLC and Agile / Scrum / Kanban principles
• Ability to quickly structure large volumes of unstructured information
• Experience documenting business processes, user flows, use cases, system logic, and interaction scenarios
• Experience creating documentation: BRD, SRS, User Stories, Use Cases, BPMN, workflow diagrams
• Ability to translate business requests into clear development tasks
• Experience with Confluence, Jira, Miro, Draw.io, Figma, or similar tools
• Experience with AI tools or AI-driven processes for analysis, information structuring, documentation automation, or workflow optimization
• Systems thinking, strong self-organization, ownership, and communication skills

Nice to Have

• Experience in ticketing / event-tech / event management / entertainment / booking systems
• Experience with products for the European market
• Experience in fintech, SaaS, or enterprise products
• Experience as an Operational BA or Enterprise Systems Analyst
• Experience launching new products, modules, or internal transformation projects
• Experience with high-load operational products or systems with a large number of transactions and integrations
• Understanding of payment flows, fraud checks, invoices, reporting, or customer support automation
• Hands-on experience with LLM tools, chatbots, scoring systems, or internal AI tools

Responsibilities

• Analyze, structure, and document business requirements and processes
• Identify weak points in current processes and suggest improvements
• Prepare technical specifications, user stories, workflow diagrams, BPMN, and other project documentation
• Describe system logic, module interactions, services, and integrations
• Decompose complex business tasks into clear stages for the development team
• Collaborate with product, operations, and engineering teams
• Participate in designing new features, modules, automations, and AI-driven solutions
• Maintain and develop the product knowledge base
• Prepare diagrams, mockups, flows, and user scenario descriptions
• Participate in discovery phases for new products and internal transformation projects
• Ensure consistency between business needs and technical implementation

Working Conditions

• Remote work format
• Paid vacation and sick leave
• Minimal bureaucracy and fast decision-making
• Direct collaboration with the product and key decision makers
• Opportunity to influence process architecture and product development
• Result-oriented and growth-focused team
• Competitive salary
• Work in a Ukrainian product company actively scaling in the European market

On behalf of our Client from France, Mobilunity is looking for a Backend Engineer – NestJS.

Our client is a table management software and CRM that enables restaurant owners to welcome their customers easily. The app is useful to manage booking requests and register new bookings. You can view all your bookings, day after day, wherever you are and optimize your restaurant’s occupation rate. Our client offers a commission-free booking solution that guarantees freedom above all. New technologies thus become the restaurateurs best allies for saving time and gaining customers while ensuring a direct relationship with them.

Their goal is to become the #1 growth platform for Restaurants. They believe that restaurants have become lifestyle brands, and with forward-thinking digital products, restauranteurs will create the same perfect experience online as they already do offline, resulting in a more valuable, loyalty-led business.

Requirements:

• 5+ years building backend applications with NestJS
• Strong product ownership with experience taking features from concept to production
• Experience designing scalable REST APIs and backend services
• Comfortable working with legacy codebases and improving existing systems
• Working knowledge of React
• Experience with AWS

• Active daily use of AI development tools (Claude Code, Cursor, Copilot)

   

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

Senior Full Stack Engineer

We’re building the Production ready system from the PoC and looking for a Senior Full Stack Engineer who enjoys creating scalable products and taking ownership of real technical decisions. You’ll work closely with product and design teams, shape parts of the architecture, and help turn ideas into a production-ready platform.

Requirements:

• 5+ years of software development experience with JavaScript, TypeScript, and modern ES6+
• Strong experience with React and Next.js
• Strong experience with backend development using Node.js / NestJS
• Hands-on experience with MongoDB and PostgreSQL
• Hands-on experience with MQTT
• Experience building applications that can be deployed on both OnPrem and Cloud platforms
• Experience building scalable applications and contributing to system architecture
• Ability to take ownership of features and technical solutions
• Comfortable working in fast-paced, product-driven environments
• Strong communication skills and ability to collaborate with both technical and non-technical stakeholders
• Upper-Intermediate English (B2+)

Nice to Have:

• Experience with React Native or WebSockets
• Experience working in startup or early-stage environments
• Experience with Azure, IoT Hub, Microsoft Entra ID
• Previous experience mentoring engineers or contributing to technical leadership

Responsibilities:

• Develop and deliver key features of a new product from concept to launch
• Contribute to the design and implementation of scalable frontend and backend architecture
• Collaborate closely with product, design, and engineering teams
• Take ownership of technical solutions and help drive implementation
• Participate in code reviews and maintain high engineering standards
• Contribute to development best practices and team workflows
• Support and mentor less experienced engineers when needed
• Continuously improve performance, reliability, and scalability of the platform.

We are looking for a senior C++ engineer to build a high-performance service for streaming large scientific and engineering datasets.

This is not a conventional CRUD backend role. You will work on asynchronous networking, HTTP/3 and QUIC, object-storage range reads, binary data transfer, native library integration, request scheduling, and bounded-memory data pipelines.

What you will do

• Design and implement the data-streaming service in modern C++.
• Build persistent HTTP/3 and QUIC-based client-server communication.
• Stream selected regions of large datasets without downloading complete files.
• Integrate with S3-compatible object storage and native data-processing libraries.
• Implement asynchronous request scheduling, prioritisation, cancellation, retries, caching, and backpressure.
• Design stable binary and JSON interfaces between independently developed components.
• Implement token-based authentication and fine-grained access control.
• Optimise memory allocation, copying, concurrency, and end-to-end throughput.
• Add metrics, tracing, load testing, and failure recovery.
• Collaborate with visualisation, machine-learning, backend, and systems engineers.

What we are looking for

• Strong production experience with modern C++17/20.
• Experience building high-throughput, low-latency, or data-intensive systems.
• Strong understanding of asynchronous and concurrent programming.
• Good knowledge of networking, HTTP, TLS, and binary protocols.
• Experience with streaming I/O, byte-range access, buffering, caching, and memory management.
• Practical knowledge of S3, MinIO, Ceph, or similar object-storage systems.
• Strong debugging, profiling, and performance-optimisation skills.
• Experience designing reliable APIs and component boundaries.
• Familiarity with Linux systems programming and production service operation.

Nice to have

• Experience with HTTP/3, QUIC, WebTransport, or high-performance RPC.
• Experience with zero-copy or low-copy data paths.
• Experience integrating C++ libraries with Python
• Familiarity with CUDA or GPU-oriented data pipelines.
• Background in distributed storage, databases, CDNs, filesystems, media streaming, HPC, or scientific visualisation.
• Experience with OAuth, OIDC, JWT, and capability-based access.
• Knowledge of Kubernetes and OpenTelemetry.

On behalf of our client, we are looking for a Senior Python Engineer

Requirements:

- 5+ years of Python development experience in enterprise or financial environments

- Strong understanding of financial instruments (equities, derivatives, fixed income) and market data

- Experience with Python libraries such as NumPy, Pandas, PySpark, Pydantic, PyTorch, or QuantLib

- Experience with trading systems, risk engines, or portfolio management platforms

- Strong knowledge of microservices architecture and API development

- Experience with cloud platforms (AWS, Azure, or GCP)

- Hands-on experience with Docker, Kubernetes, and CI/CD pipelines

- Strong analytical, communication, and stakeholder management skills

- English: Upper-Intermediate +

Nice to have:

- Experience in the UK financial sector

- Knowledge of financial compliance and regulatory frameworks (MiFID II, Basel III, SOX)

- Experience mentoring developers and leading code reviews

Location: London, UK

Company offers:

- Long-term employment with possibilities for professional growth

- Fully remote work

- Reasonably flexible schedule

- 15 days of paid vacation

- Regular performance reviews

We're looking for a Senior Kotlin Backend Developer to join an international team building scalable backend solutions. You'll take ownership of features from design to production, contribute to architectural decisions, mentor teammates, and communicate directly with the client in English.
 

Requirements

• 5+ years of backend development experience
• Strong commercial experience with Kotlin
• Solid understanding of JVM fundamentals (concurrency, memory management, garbage collection)
• Experience with Spring Boot (or Ktor / Micronaut)
• Strong knowledge of REST API design
• Experience with relational and/or NoSQL databases (PostgreSQL, MySQL, MongoDB, etc.)
• Hands-on experience with ORM frameworks such as JPA, Hibernate, or Exposed
• Experience writing unit and integration tests using JUnit and MockK
• Good understanding of Clean Architecture, SOLID principles, Git, CI/CD, and code review practices
• Experience with AI-assisted development tools such as GitHub Copilot, Cursor, Claude, or similar
• Upper-Intermediate or higher English (direct communication with clients)
   

Responsibilities

• Design, develop, and maintain backend services using Kotlin
• Own features end-to-end, from technical discussions to production deployment
• Build clean, maintainable, and well-tested code
• Participate in architecture and system design decisions
• Review code and mentor other engineers
• Collaborate directly with clients and cross-functional teams
• Continuously improve development processes and engineering quality
   

Nice to Have

• Experience with microservices architecture
• Docker and Kubernetes
• Cloud platforms (AWS, GCP, or Azure)
• Messaging systems (Kafka, RabbitMQ)
• Redis or other caching technologies

For 9 years, we have created a premium look for businesses through web design, UX/UI design, and brand identity. Our projects support the world’s most popular design awards: Webby, Red Dot, and Awwwards. Clients from over 50 countries worldwide work with us, including VISA, FIFA, UNICEF, and Mercedes-Benz. The convenience of our interfaces allows you to quickly and easily place the necessary information, and animation makes them intuitive and exciting to use. And our brand design creates the appearance of a market leader, is memorable, and motivates customers to come back again.
 

We're looking for a Senior Visual (Web or UI/UX) Designer to work with us on a project basis, helping us create visually engaging, user-friendly, and high-quality digital experiences for our clients.

Responsibilities:
- Analysis of business requirements for design;
- Communication and collaboration with project stakeholders;
- Conducting the discovery phase (competitor analysis, personas, etc.);
- Creating wireframes of varying levels of detail;
- Development of creative concepts for websites;
- Development of creative concepts for products (web and mobile);
- Creation of UI kits/design systems;
- Adaptation of design layouts for different breakpoints;
- Preparation of layouts for developers and handover to production;
- Communication and interaction with developers;
- Communication and collaboration with art director/lead and project manager;
- Processing and incorporating client feedback;
- Processing and incorporating feedback from the art director/lead.
 

Requirements:
- You have 5+ years of commercial experience;
- You are proficient in Figma at a 100% level. It is our primary working tool, and you must master and know it flawlessly;
- Working with auto layout and components is not a problem for you. You use them extensively in your work;
- You have a basic understanding of HTML and CSS syntax;
- You have a general understanding of how various web technologies work, such as JS, Three.js, WebGL, React;
- You have a high level of skill in working with composition and grids on the web;
- You have a strong ability to work with color and a fundamental understanding of color theory principles;
- You possess a solid understanding of basic UX patterns in web design and heuristics;
- Strong software skills and excellent communication abilities are developed in you. You have experience working in a team;
- You can articulate and present your solutions. It is not a problem for you to explain what you did and why;
- You can receive and process feedback from both art directors/leads and clients effectively.