Jobs at Djinni

Client & Project

Our client is a global leader in corporate brand protection and domain management, serving Fortune 500 and large enterprises with domain registration, online brand monitoring, and anti-counterfeiting services. Following the integration of two business units, the client is consolidating two legacy client portals into a single modern platform - completing the target portal, bringing it to feature parity with the legacy system, and migrating clients onto it ahead of a delivery deadline.

Stack: PHP 8.x (Laravel), RabbitMQ, MySQL, Nuxt.js (Vue.js), AWS.

Profile We're Looking For

A Solutions Architect with PHP background who has carried enterprise systems through real-world consolidation - splitting monoliths, migrating off legacy platforms, and integrating disparate systems - and who brings an enterprise mindset: designing for reliability, maintainability, and scale, and making trade-offs explicit rather than quietly cutting corners.

Key Responsibilities

• Own architecture and technical direction for the portal feature-parity and consolidation workstream, designing toward a single, scalable PHP/Laravel platform on AWS.
• Lead delivery of a Scrum team (PHP developers + QA): break epics into technical tasks, drive estimation and sprint planning, and own code quality through reviews and pair programming.
• Architect and oversee data migration and cutover: client migration scripts, entity-ID mapping tables, sync services, and API shims supporting the ongoing migration (including EPP/registry messaging).
• Design event-driven flows on RabbitMQ with proper error handling and back-pressure — avoiding failure modes such as silent error-code surfacing to users or runaway ticket generation from failed background messages.
• Embed observability (Datadog, AWS monitoring) so issues can be triaged and resolved quickly in production.
• Drive test automation strategy with QA to remove regression bottlenecks, and modern CI/CD practices.
• Surface technical risks and trade-offs early; capture deferred work as tracked tech debt rather than hidden corner-cutting.
• Align with client engineering leadership across US / UK / Brazil on technical direction and governance cadence.

Required Skills

• 8+ years of commercial software engineering, with strong hands-on PHP (PHP 8.x, Laravel or comparable modern frameworks).
• Proven track record in platform migrations — legacy-to-modern transitions, monolith-to-microservices decomposition, and running old and new systems in parallel during cutover.
• Strong integration background: API and event-driven integration, middleware/BFF patterns, and data synchronization (CDC tools such as Oracle GoldenGate / Debezium, or integration platforms such as MuleSoft / Boomi).
• Solid RabbitMQ and event-driven architecture experience.
• Strong MySQL skills — schema design, query optimization, performance tuning.
• Hands-on AWS experience, including migration of workloads/accounts and modern deployment patterns.
• Demonstrated technical leadership — mentorship, code reviews, and architectural decision-making.
• Excellent English; experience in a distributed, multi-timezone Agile / Scrum / Kanban setting.

Nice to Have

• Background in Java enterprise systems (the integration/migration heritage many of our strongest candidates bring), and ERP/commerce platform experience (SAP, SAP Commerce Cloud).
• Experience with AI-assisted development tools (Claude, Copilot, Cursor).
• SaaS, multi-tenant, or large-scale B2B portal experience.

Position Name: Network Engineer
Reports to: Manager, Network Services
Location/Type: UK Remote

Atlas Technica’s mission is to shoulder IT management, user support, and cybersecurity for our clients, who are hedge funds and other investment firms. Founded in 2016, we have grown 100% year over year through our uncompromising focus on service. 

We value ownership, execution, growth, intelligence, and camaraderie. We are looking for people who share our Core Values, thrive, and contribute to this environment while putting the customer first. At Atlas Technica, we offer a competitive salary, comprehensive benefits, and great perks to our global Team. We strive to maintain a professional yet friendly environment while promoting professional and career development for our Team Members. Join Atlas Technica now!

We are looking for a skilled Network Engineer who will be responsible for designing, implementing, maintaining, and supporting the network infrastructure for our growing client base and our firm. You will work within our systems engineering team. You should have a good understanding of designing and developing scalable, maintainable, highly available network architectures. We also expect you to be a good team player and be able to meet business objectives and SLAs.

Responsibilities

• Organize network maintenance and system upgrades including service packs, patches, hot fixes, and security configurations
• Install, implement, and configure various types of network devices, solutions, and services, including routers, switches, firewalls, load balancers, VPN, QoS.
• Monitor system performance, ensure it is available and reliable
• Monitor system resource utilization, trending, and capacity planning
• Ensure compliance with policies and requirements and troubleshoot any issues
• Organize the implementation of security tools, policies, and procedures in conjunction with the company’s security team

• Work together with vendors and other IT personnel to resolve problems faster

   

Qualifications

• 4+ years’ experience as a Network Engineer
• 1+ years’ experience working in AWS or Azure
• 5+ years of IT or similar experience
• Experience with cloud-based networking (SaaS, IaaS, PaaS)
• Extensive experience with market leading vendors (Cisco, Palo Alto, HP, Ubiquiti, Aruba)
• Working knowledge implementing VPN technologies including IPsec, SSL VPN, and encryption.
• Experience working with next-generation firewalls (application filtering, IDS/IPS). Palo Alto Firewall experience is a must
• Significant experience with monitoring, network diagnostic and network analytics tools
• Excellent understanding of networking protocols (including IPSEC, HSRP, BGP, OSPF)
• Experience establishing Zero Trust model
• Experience with managing 20+ firewalls in Panorama

• CCNA/CCNP or similar certifications highly desirable

   

Desirable Qualities

• Implementing and managing Palo Alto Firewalls in AWS & Azure.
• Implementing and managing PAN OS SDWAN.
• Very organized with excellent communication skills.
• Goal-oriented individual with proven ability to solve problems creatively.
• Ability to multitask in a fast-paced environment.
• Excellent analytical skills.

We are looking for an Integration Team Lead to own the architecture and reliability of our advertising platform integrations while leading a small engineering team and driving the integration roadmap. In this role, you will design and scale data pipelines that process large volumes of advertising data, ensure stable data synchronization across external marketing platforms, and lead new integration initiatives from API evaluation to production rollout. You will play a key role in shaping the platform’s integration strategy, mentoring engineers, and building scalable, AI-enabled integration solutions that power our core data infrastructure.

Requirements
- 5+ years in backend/data engineering, including 2+ years working with advertising/marketing APIs.
- Hands-on experience with Meta Marketing API and/or LinkedIn Marketing API: real work with rate limits, async reports, breakdowns, attribution windows.
- Strong Python skills: production-grade code with error handling, logging, and tests.
- Experience leading a team (2+ people): code reviews, task planning, growing engineers.
- Solid understanding of data pipeline patterns: idempotency, backfill, incremental sync, schema evolution.
- Experience with GCP or comparable cloud (AWS/Azure) at the service design level.

- Actively use AI-assisted development tools (e.g., Copilot, Cursor, Claude Code) in daily engineering workflows for code generation, debugging, documentation, and data pipeline design, applying sound engineering judgment when validating AI-generated outputs.

Nice to Have
- Knowledge of the Programmatic ecosystem: DV360, The Trade Desk, OpenRTB.
- Experience with BigQuery and/or ClickHouse.
- Pulumi / Terraform for IaC.
- Understanding of advertising metrics: impressions, clicks, conversions, ROAS, attribution models.

Responsibilities
- Own the architecture and evolution of all platform integrations: Meta Marketing API, LinkedIn Marketing API, Programmatic channels (DV360, The Trade Desk, etc.).
- Lead a team of 2-4 engineers: code reviews, sprint planning, mentorship.
- Design and maintain data pipelines: Ad Platform APIs to BigQuery/ClickHouse via Cloud Run Jobs and n8n workflows.
- Ensure data sync reliability: monitoring, alerting, error handling, retry strategies.
- Work with API rate limits, OAuth flows, and webhooks across advertising platforms - Drive new integration projects from API evaluation through production rollout. 
- Collaborate with the product team to prioritize the integration roadmap.

What We Offer

- Fully remote with flexible hours (aligned with EU timezones for syncs).
- Influence on the quality assurance strategy across the entire engineering department.
- A cross-team role with visibility into every part of the product.
- AI-first tooling.
- Claude Code licenses and cutting-edge AI development workflows. 
- A team with no bureaucracy, decisions are made fast.

We are looking for an experienced ITSM Consultant to support a large-scale ITSM implementation programme across multiple portfolio companies.

The role will focus on assessing current IT Service Management processes, supporting CMDB implementation activities, facilitating process adoption, and helping operational teams transition to a shared-service operating model.

This position combines ITSM expertise, stakeholder engagement, process improvement, and programme coordination within a complex multi-company environment.

Responsibilities

ITSM Assessment & Process Improvement

• Conduct ITSM maturity assessments across multiple entities
• Evaluate Incident, Problem, Change, Request, and Knowledge Management processes
• Assess existing ITSM tools, service desk operations, SLA performance, and process effectiveness
• Identify process gaps, risks, and improvement opportunities
• Produce assessment reports and recommendations

ITSM Process Implementation

• Support the rollout of new ITSM processes and standards
• Facilitate workshops and process walkthrough sessions
• Translate programme-level process designs into practical operational guidance
• Support process adoption and readiness activities
• Promote ITIL best practices across participating organisations

CMDB & Configuration Management

• Support CMDB data collection, cleansing, and validation activities
• Assist with Configuration Item (CI) classification and relationship mapping
• Work with IT teams to establish CMDB ownership and governance
• Support discovery and asset management initiatives
• Help define ongoing CMDB maintenance responsibilities

Adoption & Change Management

• Deliver process awareness and knowledge-transfer sessions
• Monitor process adoption, compliance, and SLA performance
• Support hypercare and stabilisation activities after go-live
• Coach operational teams and process owners

Vendor & Programme Coordination

• Coordinate vendor onboarding and due diligence activities
• Manage documentation, approvals, and access requirements
• Support programme reporting, action tracking, and stakeholder communications
• Maintain programme repositories and implementation artefacts

Required Experience

• 3–5+ years of experience in IT Service Management
• Hands-on experience with Incident, Problem, Change, Request, and Knowledge Management processes
• Experience supporting ITSM implementations, migrations, or transformation programmes
• Experience with CMDB implementation, data governance, or Configuration Management
• Experience facilitating workshops and stakeholder discussions
• Experience working with vendors and third-party service providers

Required Knowledge

• Strong understanding of ITIL 4 principles and practices
• Knowledge of ITSM operating models and service desk environments
• Understanding of CMDB concepts, CI management, and data governance
• Ability to analyse service metrics, ticket data, and SLA performance
• Familiarity with discovery tools and asset management concepts

Preferred Skills

• ServiceNow experience
• Experience with ITSM transformation programmes
• Change management and process adoption experience
• Programme coordination or project support experience
• Experience working in multi-entity or international environments

Certifications

Required:

• ITIL 4 Foundation

Preferred:

• ITIL 4 Specialist
• ITIL Managing Professional
• PRINCE2 Foundation
• CAPM or similar project management certification

Soft Skills

• Strong communication and stakeholder management skills
• Workshop facilitation and presentation skills
• Ability to work independently and manage multiple workstreams
• Strong documentation and reporting capabilities
• Pragmatic and collaborative mindset

About Us
We are an award-winning digital studio working with global clients in real estate, architecture, and luxury sectors. We create high-end branding, websites, and digital experiences recognized by Webby Awards and Awwwards.

Role Overview
We are looking for a Frontend / Creative Developer to create visually impressive websites with 3D elements, WebGL experiences, and smooth scroll-based animations. 

Responsibilities

• Develop interactive websites with 3D visuals, scroll animations, and smooth transitions.
• Work with Three.js, WebGL, Canvas, GSAP, ScrollTrigger, or similar technologies.
• Optimize complex visual scenes for browser performance.
• Choose the best technical approach between real-time 3D, video, or image sequences.
• Ensure responsive implementation across desktop, tablet, and mobile.
• Collaborate with designers and project managers to bring creative concepts to life.

Requirements

• Relevant experience with WebGL / Three.js / Canvas.
• Strong experience with GSAP / ScrollTrigger or similar animation tools.
• Understanding of browser performance and optimization for heavy visual scenes.
• Experience with responsive development for desktop, tablet, and mobile.
• Attention to smoothness, transitions, details, and overall visual quality.
• Portfolio with relevant WebGL / Three.js cases.

What We Offer

• Opportunity to work with an award-winning international agency.
• Exciting projects for top-tier clients in real estate, architecture, and luxury sectors.
• Remote project-based collaboration.
• Clear briefs, professional communication, and timely payments.

About the Project: We are building a massive, proprietary Ticketing & Event Management Ecosystem for the US market. This is NOT a standard booking site. We are engineering a custom, high-load platform from scratch. The ecosystem includes:

• Complex Web Platform: Handling Reserved Seating schemes, Camping bookings, and deep Event Management logic.
• On-Site Operations: Gate Scanning functionality and Ticket Printer control. We develop the scanning logic and integrate it with physical hardware for printing.

• Mobile Ecosystem: A feature-rich mobile application for organizers and attendees.

   

We don't use "out-of-the-box" solutions. We build our own logic to handle heavy complexity. If you prefer solving technical puzzles rather than integrating standard plugins, this is your place.

⚠️ THE CULTURE (Read this first): We are a US-based startup in an aggressive growth phase. We are looking for a Founding Engineer mindset.

• Intensity: We work with the US market. Late evening calls (European time) are standard to sync with the founders.
• Ownership: You don't just "close tickets." You own the feature from the database architecture to the UI. If the Gate System goes down on a Saturday night during a festival, you are the one helping to fix it.
• No "Code Monkeys": We discuss business goals. You need to understand why we are building a feature. If a requirement doesn't make sense technically, we expect you to push back and propose a better solution.

Tech Stack: React, Remix, Tailwind UI, Node.js, NestJS, TypeScript, PostgreSQL (TypeORM), GCP infrastructure.

Requirements:

• 3+ years of engineering experience, with deep expertise in the Node.js/React ecosystem.
• Modern Stack Mastery: You are proficient with NestJS on the backend and React/Remix + Tailwind UI on the frontend.
• Architectural Grit: Experience building custom complex systems (booking engines, CRM, logistics). You know how to design database schemas (PostgreSQL/TypeORM) that won't break under load.
• Integrations: Experience with payment processors (Stripe, etc.) and—crucially—an interest in working with hardware integrations (printers, scanners, IoT).
• US Startup Availability: You are comfortable working late hours and staying responsive during critical festival launches.
• Mobile Awareness: Knowledge of mobile development (React Native) is a plus.
• English: Upper-Intermediate or higher. You must be able to explain complex technical trade-offs to the founders.

Responsibilities:

• Engineer the Core: Design and develop the backend and frontend for the Ticketing Platform.
• Solve Hard Problems: Implement logic for Reserved Seating, interactive maps, and complex order flows.
• Hardware & Gate Logic: Write code that interacts with the physical world (scanning tickets, printing).
• Performance: Optimize the app to handle traffic spikes during ticket sales drops.
• Quality & DevOps: Write testable code, manage CI/CD pipelines, and deploy to GCP. You break it, you fix it.

We Offer:

• High Reward for High Performance: Competitive salary + Advanced Bonus System (We reward those who build the business with us).
• Real Engineering Challenge: No CMS wrappers. Pure custom development on an actual stack.
• Direct Impact: Your code runs the show at real festivals in the US.
• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kyiv, Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement (50%).

REAL New York is hiring for several virtual roles within our marketing team, including a Web Designer/Developer, Digital Marketing Associate, Marketing Manager, and Creative Director.

The Web Designer/Developer is responsible for building and maintaining property and campaign websites using platforms like Webflow, Wix, and Squarespace, as well as custom HTML/CSS/JS. The role focuses on creating clean, responsive, and on-brand digital experiences for listings and new developments while supporting SEO and site performance.

The Digital Marketing Associate supports social media, email, and digital campaigns across REAL New York. This role helps plan and schedule content, manage day-to-day execution, and assist with reporting and analytics to drive engagement and lead generation.

The Marketing Manager oversees day-to-day marketing operations, including social media, agent marketing tools, website updates, and internal systems, ensuring consistency and efficiency across the brokerage.

The Creative Director role involves leading our creative team, overseeing branding, social media, marketing campaigns, new development launches, and implementing AI-driven marketing systems across the company.

We look forward to reviewing your resume, portfolio, and experience!

About the Company

Our client is a financial technology services provider dedicated to expanding global access to digital assets by building innovative solutions in the cryptocurrency ecosystem. Their products provide exchanges, liquidity solutions, and enterprise-grade integrations for clients worldwide. Specialized in building Crypto, Web3, and various White-Label Solutions, we are looking for a skilled QA Automation Engineer to help scale our automation infrastructure and elevate our quality assurance strategy.

In this role, you will be a core member of our engineering team, helping establish testing standards to ensure our cutting-edge crypto solutions meet enterprise-grade performance and reliability metrics. You will have an excellent opportunity to help transform our QA processes by introducing automation to a rapidly growing organization.

What You'll Do

You will act as a key driver for automation on your team, applying your technical expertise to expand robust automation frameworks while collaborating with our existing QA members. Your main responsibilities will include:

• Automation Implementation: Take hands-on responsibility for implementing, maintaining, and scaling automation practices across our core financial and crypto products.
• Framework Development: Build and extend end-to-end automation test suites using Playwright and TypeScript.
• Test Reporting & Alerts: Configure and connect external test reporters (e.g., Allure, ReportPortal, TestDino) to pipe real-time test results and alerts directly into Slack.
• Team Collaboration & Guidance: Work closely alongside a dedicated team of QA Engineers, helping them align with automation goals, share technical knowledge, and adopt automated workflows.
• Pipeline Integration: Partner with developers and DevOps engineers to integrate automated tests directly into our build pipelines (such as GitHub Actions).
• Real-Time & Data Testing: Work on stability, responsiveness, and accuracy of data-heavy and real-time interfaces (such as WebSockets) across various browsers.
• API Validation: Test and validate backend endpoints, ensuring the stability and accuracy of our financial data feeds.

Your AI & Automation Advantage

We believe AI is a powerful co-pilot for modern testing. We're looking for an engineer who actively keeps up with the evolving AI testing landscape and latest Playwright updates. Practical experience using MCP (Model Context Protocol) servers to connect AI agents with local development or browser environments is a massive advantage!

Who You Are

You are a proactive, detail-oriented, and adaptable engineer who thrives in a fast-paced environment. You are:

• A Clear Communicator: You can effectively articulate quality risks and technical testing strategies to your QA peers, developers, and stakeholders.
• A Problem-Solver: You are self-motivated, resilient, and possess strong critical thinking skills to debug complex, distributed systems.
• A Peer Mentor: You enjoy collaborating, pairing with manual testers, and contributing positively to a team culture built on continuous improvement.
• A Tech Enthusiast: You have a curious mindset with a keen interest in (or passion for) blockchain, cryptocurrency, and financial technology.

Qualifications

• English: Upper-Intermediate level of English or higher (both written and verbal).
• Experience: 2+ years of hands-on experience building and maintaining E2E test suites.
• Core Technical Skills:
  • Strong hands-on experience developing automation scripts using Playwright.
  • Proficiency in TypeScript or JavaScript.
  • Experience with API testing (RESTful APIs) and real-time data streaming technologies (WebSockets).
  • Good understanding of CI/CD concepts and automated test execution in development pipelines.
  • Proficient with Git version control and collaborative workflows.
• Education: A Bachelor's degree in Computer Science or a related field (or equivalent practical experience).

Bonus Points:

• At least a solid theoretical understanding (or practical experience) of how to test and validate GraphQL endpoints.
• Experience testing fintech applications, blockchain networks, smart contracts, or cryptocurrency exchanges.

We Offer

• Health & Wellness: Medical Insurance in Ukraine and a Multisport program in Poland.
• Flexibility & Infrastructure: Flexible working hours with access to modern offices in Ukraine and Poland (Wroclaw).
• Equipment: The company provides all necessary high-end hardware.
• Growth & Support: English classes up to three times a week, alongside corporate Mentoring and Educational Programs.
• Contractor Support: Complete tax and accounting services handled for Ukrainian contractors.
• Time Off: All official holidays alongside paid vacation and sick days.
• Culture: Regular corporate activities (incredible parties, team buildings, sports, and tech events) combined with an advanced bonus system.

About us

UITOP is a design & development team building intuitive, scalable B2B SaaS platforms across logistics, finance, construction, and more. We work with ambitious product companies that move fast and care deeply about quality.
 

Job Summary

We're looking for a Python developer who can own the data layer of a fintech product from designing the historical database to building the pipelines that feed an ML model. If Interactive Brokers Gateway or Bloomberg BQNT/BQL are part of your background, let's talk.
 

Requirements

• 3-4 years of backend development experience (any language)
• 2-4 years working with Python, ideally closer to 3–4
• Hands-on production experience with Django mandatory
• Experience with third-party API integrations (REST, webhooks)
• PostgreSQL, Pydantic, AWS
• Any data processing or ML experience
• Interactive Brokers Gateway or Bloomberg BQNT/BQL — serious bonus
• Upper-Intermediate English (B2+)
   

Key responsibilities

• Build and maintain a historical database tracking corporate spinoffs and demergers across global markets
• Apply ML models to historical findings and develop predictive signals for upcoming transactions
• Integrate data feeds from financial exchanges and third-party APIs (REST, webhooks)
• Design scalable data pipelines and backend architecture to support the aggregation platform
• Work directly with the client team to iterate on data models and product requirements
   

About the project

You'll be joining a fintech investment platform — a single hub that aggregates real-time and historical data from multiple financial exchanges. The core challenge: designing and training an ML-powered engine that tracks corporate spinoffs (demergers) historically and applies those learnings to predict and evaluate upcoming transactions.

Benefits

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• Financial compensation of coworking 100% (during blackouts).
• Flexible work schedule, remote.

Join the Fintech Core team building a white-label modular platform that powers digital banks, payment systems, and fintech products across Europe, North America, and MENA regions
 

As a System/Business Analyst on the Fintech Core project, you will define technical architecture, system specifications, and integration designs for a white-label modular fintech platform that enables rapid creation of digital banking and payment products.
 

The platform provides a complete technology stack including general ledger, middleware, mobile/web applications, and extensive third-party integrations for KYC, payments, card issuance, and compliance. You'll work closely with Business Analysts, Solution Architects, and Engineering teams to translate business requirements into detailed technical specifications, design robust system architectures, and ensure seamless integration across microservices while maintaining regulatory compliance and enterprise-grade security.

This role offers hands-on experience designing financial systems at scale, with exposure to payment processing, card networks, digital wallets, cross-border transactions, and regulatory compliance frameworks serving multiple fintech implementations globally.

Responsibilities
 

• Analyze and document system requirements for platform modules including payments, card issuance, digital wallets, accounts, ledger management, and compliance systems
• Translate business requirements into detailed technical specifications, API contracts, database schemas, and integration architectures
• Design data models, entity relationships, and data flow diagrams for transactional and financial systems with appropriate normalization and performance considerations
• Define integration patterns and technical specifications for connecting with payment processors, KYC/AML providers, card issuers, and open banking platforms
• Document system behaviors using sequence diagrams, component diagrams, deployment architectures, and API specifications (OpenAPI/Swagger)
• Collaborate with Solution Architects to ensure system designs align with microservices architecture patterns, scalability requirements, and technical best practices
• Define non-functional requirements including performance benchmarks, security controls, data retention policies, and audit trail specifications
• Facilitate technical design workshops with Engineering teams to review system specifications, validate implementation approaches, and identify technical risks
• Create comprehensive system documentation in Confluence covering technical flows, component interactions, message formats, and infrastructure requirements
• Support QA teams by defining system integration test scenarios, technical acceptance criteria, and end-to-end testing strategies
• Analyze system performance bottlenecks and propose optimization solutions for high-throughput financial transaction processing
• Ensure all technical specifications maintain regulatory compliance requirements (PCI DSS, GDPR, PSD2) and financial data security standards
• Maintain traceability between business requirements, system specifications, technical implementations, and test cases
• Participate in sprint planning, technical refinement sessions, and architecture review boards to ensure alignment between product vision and technical execution

Professional skills are required:
 

• 3+ years of experience as System Analyst, Technical Analyst, or similar role in fintech or banking domains

   

• Strong understanding of financial systems architecture including general ledgers, payment processing, and account management

   

• Experience with microservices architecture, API design, and distributed systems

   

• Proficiency in creating technical documentation: system design documents, data flow diagrams, sequence diagrams, ER diagrams

   

• Knowledge of database design and data modeling for transactional systems

   

• Understanding of integration patterns, message queues, and event-driven architectures

   

• Familiarity with payment systems standards (ISO 20022, SWIFT, SEPA, card schemes)

   

• Experience with API specifications (REST, OpenAPI/Swagger, webhooks)

   

• Understanding of cloud infrastructure and deployment architectures (AWS, Azure, GCP)

   

• Knowledge of authentication and authorization mechanisms (OAuth, JWT, API keys)

Technical Skills

• 3+ years of experience as System Analyst, Technical Analyst, or similar role in fintech or banking domains

• Strong understanding of financial systems architecture including general ledgers, payment processing, and account management

• Experience with microservices architecture, API design, and distributed systems
• Proficiency in creating technical documentation: system design documents, data flow diagrams, sequence diagrams, ER diagrams

• Knowledge of database design and data modeling for transactional systems

• Understanding of integration patterns, message queues, and event-driven architectures

• Familiarity with payment systems standards (ISO 20022, SWIFT, SEPA, card schemes)

• Experience with API specifications (REST, OpenAPI/Swagger, webhooks)

• Understanding of cloud infrastructure and deployment architectures (AWS, Azure, GCP)

• Knowledge of authentication and authorization mechanisms (OAuth, JWT, API keys)

   

Domain Knowledge

• Understanding of core banking concepts: accounts, transactions, balances, ledgers, reconciliation

   

• Knowledge of payment flows: domestic/international transfers, card payments, digital wallets

   

• Familiarity with KYC/AML processes and regulatory compliance requirements

   

• Understanding of financial data security standards (PCI DSS, GDPR)

   

• Experience with fintech product features: onboarding, card issuing, FX, acquiring

Analytical & Documentation Skills

• Excellent analytical thinking and problem-solving abilities

• Strong technical writing skills with attention to detail

• Ability to translate complex business requirements into technical specifications

• Experience with UML, BPMN, or similar modeling notations

• Proficiency with documentation tools (Confluence, Notion, or similar)

• Experience with requirements management and traceability

Skills will be a plus:
 

• Experience with white-label or multi-tenant system architectures

• Knowledge of blockchain and cryptocurrency integrations

• Familiarity with regulatory frameworks (PSD2, Open Banking, MiFID)

• Experience with performance testing and system optimization

• Understanding of DevOps practices and CI/CD pipelines

• Previous experience with modular platform architecture

• Knowledge of financial compliance and audit requirements

• Experience with data migration and system integration projects

Project description:

Fintech Core is a white-label modular fintech solution designed for rapid creation and launch of digital banking and payment products. It provides a comprehensive, turnkey platform that enables businesses to build neobanks, digital wallets, payment systems, and other fintech products within 3 months rather than years. The solution includes a complete technology stack: a robust general ledger platform, middleware layer, customizable frontend applications for iOS/Android/Web, and extensive third-party integrations for KYC, payments, card issuance, and compliance. Unlike traditional SaaS offerings, Fintech Core provides full access to source code, eliminating vendor lock-in and enabling deep customization.

The platform is built on microservices architecture with modular components that can be independently scaled and customized. It supports multi-currency operations, cross-border payments, card issuing, account management, transaction processing, compliance monitoring, and back-office orchestration. The solution is PCI & DSS compliant and designed to meet regulatory requirements across multiple jurisdictions.

Project stage: Active development and continuous enhancement. The platform is mature with multiple successful implementations but undergoes constant evolution to incorporate new regulatory requirements, payment integrations, and fintech capabilities. Quality, scalability, and compliance are paramount priorities.

The size and the structure of the PROJECT team:

Cross-functional team including Product Owners, Business Analysts, System Analysts, Frontend/Backend Developers, QA Engineers, DevOps, Security Specialists, and Compliance Consultants. The team operates in an Agile environment with close collaboration between technical and business functions.

About the Role

We are looking for an experienced Senior Full-Stack Developer to join our engineering team and help design, build, and scale modern cloud-native applications. The ideal candidate combines deep backend expertise in Python with strong frontend development skills, a solid understanding of distributed systems, and experience building highly scalable and reliable software solutions.

You will play a key role in architecture decisions, technical leadership, and the delivery of high-quality products while collaborating closely with cross-functional teams.

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications.
• Build robust backend services using Python and FastAPI.
• Develop modern frontend applications using ReactJS and TypeScript.
• Design and implement RESTful and GraphQL APIs.
• Build and maintain asynchronous processing systems using Celery or similar technologies.
• Architect and implement cloud-native solutions on AWS.
• Design scalable microservices and distributed systems.
• Participate in system architecture, code reviews, and technical decision-making.
• Implement CI/CD pipelines and DevOps best practices.
• Ensure system reliability, performance, security, and maintainability.
• Collaborate with product managers, designers, and engineering teams to deliver business value.
• Leverage AI technologies and integrate AI capabilities into products where appropriate.

Required Skills

Backend Engineering

• Strong expertise in Python development.
• Extensive experience with FastAPI.
• Strong understanding of REST API and GraphQL API design and development.
• Experience building asynchronous processing workflows using Celery or similar frameworks.

Frontend Engineering

• Strong expertise in ReactJS.
• Advanced proficiency in TypeScript.
• Experience building scalable, maintainable, and performant frontend applications.

Cloud & Infrastructure

• Strong experience with AWS cloud services.
• Hands-on experience with Docker and containerization technologies.
• Experience deploying and managing applications in Kubernetes environments.
• Understanding of cloud-native application architecture and operational best practices.

Architecture & System Design

• Strong understanding of microservices architecture.
• Experience designing distributed systems.
• Ability to make architectural decisions balancing scalability, reliability, maintainability, and performance.
• Familiarity with Domain-Driven Design (DDD) and clean architecture principles.

Databases & Data Management

• Strong understanding of SQL databases.
• Experience working with NoSQL databases.
• Ability to design efficient data models and optimize database performance.

DevOps & Reliability

• Experience designing and maintaining CI/CD pipelines.
• Knowledge of monitoring, logging, and observability frameworks.
• Experience troubleshooting production environments and ensuring system reliability.

Additional Requirements

• Experience building AI-powered applications or integrating AI capabilities into software products.
• Experience with event-driven architectures and messaging systems such as Kafka, SNS, or SQS.
• Knowledge of Infrastructure as Code (Terraform, CloudFormation, or equivalent).
• Experience with performance optimization, load testing, and scalability improvements.
• Experience managing and optimizing AWS infrastructure costs.
• Strong problem-solving and analytical skills.
• Ability to work independently and take ownership of technical initiatives.
• Excellent communication and collaboration skills.

Nice to Have

• Experience working in high-growth or startup environments.
• Experience with large-scale SaaS platforms.
• Knowledge of security best practices for cloud-native applications.
• Experience mentoring engineers and providing technical leadership.
• Experience with multi-region or globally distributed systems.

Overview
We are looking for a Machine Learning Engineer to design and implement intelligent systems that power personalized digital experiences across connected devices and mobile applications.

This is a hands-on role focused on applied machine learning and data engineering, ideal for someone who thrives at the intersection of ML models, data pipelines, and product integration. You will collaborate closely with backend engineers, data scientists, and product managers to bring ML-driven features into production and continuously optimize them based on real-world usage.

Responsibilities:

• Design, train, and deploy machine learning models for use cases such as personalization, recommendations, and visual analysis;
• Build and maintain scalable, production-grade data pipelines (batch and real-time);
• Collaborate with product and engineering teams to translate product ideas into ML-powered features;
• Implement model observability, monitoring, and retraining workflows;
• Optimize inference performance and model serving in resource-constrained environments (e.g., edge or mobile);
• Contribute to the architecture of a modern ML platform within a cloud-native microservices environment;
• Work with backend teams to expose model outputs via APIs and integrate them into customer-facing experiences;
• Stay up to date with recent ML/AI advancements and evaluate promising methods for future implementation.

Requirements:

• 3+ years of experience in applied machine learning or data science;
• Strong knowledge of:
  • Supervised learning, recommendation systems, or computer vision;
  • Python and ML libraries such as TensorFlow, PyTorch, scikit-learn;
  • Building, deploying, and maintaining ML models in production.
• Familiarity with:
  • MLOps tools (e.g., MLflow, TFX, Airflow, Vertex AI);
  • Data pipelines and messaging systems (e.g., Kafka, BigQuery, dbt);
  • Model serving frameworks (e.g., FastAPI, TensorFlow Serving, TorchServe, ONNX);
• Comfortable collaborating with product, engineering, and analytics teams;
• Experience with cloud platforms (GCP, AWS, or Azure) and container-based deployments;
• Bonus: Experience with edge AI, mobile ML, or video/image processing pipelines.

Blackthorn Vision is looking for a Middle/Middle Strong .NET Engineer. 

Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Please note: we’ll primarily consider candidates based in Lviv, as the project team is located there.

Requirements:

• 3+ years of commercial experience working on the backend as a .NET developer.
• Cloud systems development experience.
• Understanding of data access technologies, including Entity Framework and MongoDB.
• Experience with both SQL and NoSQL databases.
• Experience with microservice-oriented architecture, parallel, and asynchronous programming design patterns.
• Experience with Kubernetes, Docker, and RabbitMQ.
• Proven experience with Azure technologies: Azure Entra ID, Azure Storage accounts, Azure Service Bus, Azure Container Registry.
• Knowledge of design and architectural patterns.

• English level: Upper-Intermediate.

   

Responsibilities:

• Develop and maintain high-quality software solutions using .NET 8.0.
• Take full ownership of delivering new features to end users, including designing architecture, implementing, testing, and onboarding the customer support team with new functionality.
• Collaborate with product owners, the support team, and end users to understand project requirements and deliver solutions.
• Participate in code reviews to enhance overall code quality.
• Ensure applications are high-performing, responsive, and of excellent quality.
• Troubleshoot and resolve technical issues and defects promptly.
• Create code documentation, technical specifications, and architecture diagrams for new features.
• Follow agile methodologies and participate in regular sprint planning and review meetings.

You are compatible with us if you:

• Have a strong product mindset.
• Have a proactive approach to taking ownership of decisions/features.
• Possess a strong, curiosity-driven mindset.
• Are comfortable with challenges.
• Have the ability to collaborate and build relationships with diverse personalities.
• Demonstrate customer-focused decision-making.
• Exhibit clear and timely communication.
• Are open to giving and receiving constructive feedback.
• Value the quality of your code.
• Are able to solve the required technical tasks and communicate throughout the process (for example, asking clarifying questions promptly).

At Renaissance AI, we help organisations turn AI from “something people have access to” into something they confidently use every day. Our simulation-based platform helps enterprise teams (primarily in banking and corporate sectors) build practical AI habits within Microsoft Copilot, Claude, and Gemini based on a methodology featured in Harvard Business Review.
 

What you’ll be doing:
You’ll design interactive learning modules and practical scenarios, helping corporate users apply AI in real work tasks through practice.
 

Your responsibilities:
• Designing the structure of learning modules and matching them with corporate job profiles (Compliance, Risk, Operations, etc.).
• Conducting research on practical AI use cases, user pain points, and key limitations of LLMs.
• Creating concise, no-fluff theory blocks and setting up contextual scenarios for exercises.
• Developing step-by-step logic for practical tasks, simulations, and interactive quizzes.
• Reviewing, testing, and improving content quality to ensure high accuracy.

What we’re looking for:
• Experience creating educational, product training, or instructional design content.
• Structural thinking: ability to turn scattered information into a coherent, task-oriented learning journey.
• Confident daily use of AI tools (ChatGPT, Copilot, Gemini, Claude) and understanding of their limitations.
• Clear writing style, strong attention to detail, and ability to adapt tone for corporate clients.
• Experience in or understanding of corporate workflows (Finance, Banking, Legal, Compliance) is a major plus.

Blackthorn Vision is looking for a Middle/Middle Strong .NET Engineer. 

Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Requirements:

• 3+ years of commercial experience working on the backend as a .NET developer.
• Cloud systems development experience.
• Understanding of data access technologies, including Entity Framework and MongoDB.
• Experience with both SQL and NoSQL databases.
• Experience with microservice-oriented architecture, parallel, and asynchronous programming design patterns.
• Experience with Kubernetes, Docker, and RabbitMQ.
• Proven experience with Azure technologies: Azure Entra ID, Azure Storage accounts, Azure Service Bus, Azure Container Registry.
• Knowledge of design and architectural patterns.

• English level: Upper-Intermediate.

   

Responsibilities:

• Develop and maintain high-quality software solutions using .NET 8.0.
• Take full ownership of delivering new features to end users, including designing architecture, implementing, testing, and onboarding the customer support team with new functionality.
• Collaborate with product owners, the support team, and end users to understand project requirements and deliver solutions.
• Participate in code reviews to enhance overall code quality.
• Ensure applications are high-performing, responsive, and of excellent quality.
• Troubleshoot and resolve technical issues and defects promptly.
• Create code documentation, technical specifications, and architecture diagrams for new features.
• Follow agile methodologies and participate in regular sprint planning and review meetings.

You are compatible with us if you:

• Have a strong product mindset.
• Have a proactive approach to taking ownership of decisions/features.
• Possess a strong, curiosity-driven mindset.
• Are comfortable with challenges.
• Have the ability to collaborate and build relationships with diverse personalities.
• Demonstrate customer-focused decision-making.
• Exhibit clear and timely communication.
• Are open to giving and receiving constructive feedback.
• Value the quality of your code.
• Are able to solve the required technical tasks and communicate throughout the process (for example, asking clarifying questions promptly).