Jobs at Djinni

NuxGame works with iGaming operators of all scales helping companies access new markets or enhance their existing brands. As a casino gaming software company, NuxGame provides solutions to build outstanding brands and fulfill your business goals. We are looking for a Crowd Specialist / Digital Community Manager to join our team.

Key Responsibilities:

• Develop and execute a crowd marketing strategy with a strong focus on Reddit.
• Identify and manage relevant platforms: Reddit, Quora, niche forums, review/rating platforms, industry communities, Q&A websites, and other discussion-based sources.
• Create, warm up, grow, and manage multiple accounts across platforms, building karma, trust, credibility, and natural user behavior.
• Participate in relevant discussions with natural, contextual comments, posts, answers, brand mentions, and links.
• Monitor mentions of NuxGame, competitors, and relevant industry topics across communities.
• Track performance, moderation risks, platform rules, traffic, placements, and overall impact.
• Test new platforms, approaches, automations, account setups, posting formats, and outreach angles.

Requirements:

• Hands-on experience with Reddit marketing, account growth, and community-based linkbuilding.
• Practical understanding of multi-account management across Reddit, Quora, forums, review platforms, and similar sources.
• Ability to deliver measurable results: live placements, indexed links, traffic, mentions, engagement, and visibility.
• Ability to independently find relevant communities, topics, discussions, and placement opportunities.
• Analytical mindset with experience in tracking, reporting, and optimizing results.
• Experience with automation tools, AI tools, account management tools, and tracking systems is a plus.
• English writing skills for natural and convincing posts, comments, and answers.

Nice to Have:

• Experience in iGaming, betting, casino, fintech, SaaS, or other competitive niches.
• Knowledge of relevant Reddit communities, forums, review platforms, and Q&A websites.
• Experience with reputation management, brand mentions, competitor monitoring, and SEO-driven crowd marketing.

What we offer:
We believe that a happy team builds the best products. Here is how we support you:
 

• Remote & Flexible: Work from anywhere. Our core hours are 10:00 to 18:00 (Kyiv time), Mon-Fri.
• Financial Stability: Timely payment for compensation for services
• Personal Equipment Policy: equipment are provided for use to ensure comfortable and efficient work.
• Knowledge Sharing: We regularly gather to discuss new trends, share insights, and elevate one another.
• Community: At NuxGame, you will work in a team of like-minded people who are ready to support, inspire, and tackle complex challenges together.
• Creative Freedom: We encourage initiative. With us, you have the freedom of professional expression and the space to implement your ideas.
• Time-off Policy: 24 vacation days per year + 5 sick days (without medical confirmation).
• Atmosphere: A friendly environment focused on results and mutual respect, free from unnecessary bureaucracy and pressure.

We believe in unlocking the inner potential of each team member within an open and democratic culture.

Waiting for you on our team!

Key Responsibilities
· Design, develop, maintain, and optimize backend services and API solutions
· Build and support integrations between internal systems and external platforms
· Work on ETL processes
· Analyze business requirements and translate them into scalable, reliable technical solutions
· Write automated tests and actively participate in code reviews
· Work in a containerized, cloud-native environment
· Collaborate with both technical and business stakeholders

Technical Requirements
· Strong hands-on knowledge of Python 3.12+
· Proven work with Docker in real-world environments
· Familiarity with message broker systems such as RabbitMQ
· Working knowledge of MongoDB or Amazon DocumentDB
· Basic understanding of Kubernetes and how containerized systems are orchestrated
· Building backend APIs with FastAPI (Flask is considered a plus)
· Writing automated tests using pytest
· Good understanding of REST API design principles and backend architecture

Language Requirements
· German — mandatory (minimum B2 working proficiency)
· English — professional working proficiency

Nice to Have
· Experience with ETL systems and data pipelines
· Understanding of business processes
· Experience working in cloud-native production environments

About the Role

We are seeking a highly skilled and mission-driven Data Scientist to join our customer team and lead the development of our Patient Risk Scoring machine learning initiatives. In this role, you will build predictive models that identify high-risk patients for interventions, ultimately improving patient outcomes and optimizing care delivery. You will leverage Microsoft Fabric to manage end-to-end machine learning workflows, drawing insights from Electronic Health Record (EHR) data sources. If you are passionate about the intersection of advanced artificial intelligence and healthcare innovation, we want to hear you.

Responsibilities

• Model Development & Deployment: Design, train, evaluate, and deploy machine learning models to predict patient risk scores (e.g., medication refusal, non-compliance, decompensation etc.).
• EHR Data Engineering & Processing: Extract, clean, and transform healthcare data from EHR systems (e.g., Credible) to build robust feature sets for predictive modeling.
• End-to-End Analytics with Microsoft Fabric: Utilize Microsoft Fabric’s unified analytics platform (including Data Engineering, Data Science, and Real-Time Analytics workloads) to orchestrate data pipelines, manage Lakehouse architectures, and scale ML training/inference.
• Clinical Collaboration: Partner closely with clinical stakeholders, medical officers, and care teams to define risk cohorts, ensure the clinical validity of model features, and translate model outputs into actionable clinical workflows.
• MLOps & Monitoring: Establish continuous integration, deployment, and monitoring of ML models to track data drift, model degradation, and fairness/bias over time.
• Compliance & Privacy: Ensure all data handling and modeling practices strictly adhere to healthcare regulations (e.g., HIPAA, HITRUST) and maintain the highest standards of data security and patient privacy.

Qualifications

• Education: Bachelor’s or Master’s degree in Data Science, Computer Science, Statistics, Bioinformatics, Health Informatics, or a related quantitative field.
• Professional Experience: 4+ years of experience developing and deploying machine learning solutions in production environments, preferably within healthcare or clinical data ecosystems.
• Microsoft Fabric Experience: Hands-on experience building and deploying data and ML workflows within the Microsoft Fabric ecosystem (OneLake, Notebooks, Spark, Data Factory).
• Machine Learning Proficiency: Strong grasp of classical machine learning algorithms (e.g., XGBoost, Random Forests, Logistic Regression) and modern deep learning techniques, specifically for tabular and time-series data.
• Programming Skills: Advanced proficiency in Python and SQL. Experience with data manipulation and ML libraries (Pandas, PySpark, Scikit-Learn, PyTorch, or TensorFlow).
• Communication: Excellent ability to translate complex technical and statistical concepts to non-technical clinical and business stakeholders.

Nice to Have

• Cloud Certifications: Relevant Microsoft Azure or Fabric certifications.

Work Environment & Collaboration

• Full-time: 8 hours a day.
• Schedule: Mon – Fri 9-5 (US EST) overlap with team at least 4 hours.
• Team Structure: Work independently on assigned tasks with support from experienced team members.
• Communication: Primarily asynchronous via email and MS Teams.

Responsibilities

• Design and develop full-stack web applications
• Build and maintain backend services using Java & Spring (Boot, MVC)
• Architect and optimize database solutions (PostgreSQL)
• Work with JPA / Hibernate for efficient data handling
• Implement secure authentication and authorization (Spring Security)
• Develop and maintain frontend using HTML / CSS / JavaScript / jQuery / Bootstrap
• Design and integrate REST APIs
• Improve system performance, scalability, and reliability
• Participate in architectural decisions and code reviews
• Mentor junior developers

Requirements

• 4+ years of experience in Java development
• Strong experience with Spring ecosystem
• Deep understanding of application architecture and design patterns
• Experience optimizing database performance
• Strong knowledge of security best practices
• Ability to design scalable and maintainable systems
• Experience leading features or small teams
• Strong code review and mentoring skills

Nice to Have

• Experience with Docker and containerized environments
• Familiarity with message brokers (e.g., RabbitMQ)
• Experience with microservices architecture
• CI/CD experience
• Experience working on high-load systems

For 15 years, Alty has reached the top lists of mobile and desktop application developers for fintech, retail, banking, and tourism. Our professional expertise in UI/UX design, mobile, and web development of high-load applications used by millions of users worldwide. You know us for sure if you use Monobank, Privat24 for Business, ZakazUA, EasyPay, Kashable, or Sfera Living System. We also have a partnership with Visa and Mastercard. Our clients are enterprises and corporations that recommend us to partners. We put the customer at the heart of all we do and achieve our best together. Join us!
 

About the Role:

We are looking for an AI Enablement Specialist — a highly proactive, cross-functional professional who will help us rethink how digital products are built, delivered, and scaled using AI.

This is not a traditional engineering or design role. Instead, we’re looking for someone who understands product development holistically — spanning business, design, and engineering — and can identify, test, and implement  AI-driven approaches that significantly improve speed, quality, and innovation.

You will play a key role in shaping how we adopt AI across workflows, from early prototyping to delivery and even sales enablement.
 

Key Responsibilities:

— Drive AI adoption and modernization across product development processes.

— Identify, test, and implement AI-powered tools and workflows to accelerate delivery.

— Actively participate in brainstorming, product discussions, and strategic decisions.

— Propose new approaches and ideas — including those the team hasn’t yet even considered.

— Facilitate strong cross-team communication between business, design, and engineering.

— Prototype solutions using modern AI tools instead of traditional workflows where applicable.

— Continuously explore and evaluate emerging AI tools and methodologies.

— Build and showcase real use cases demonstrating efficiency gains and improvements.

— Support client-facing activities and sales, helping articulate AI-driven value propositions.

— Educate and guide teams on how to effectively leverage AI in their daily work.
 

What We’re Looking For:
— Proven examples of process optimization or innovation using AI.
— Strong understanding of digital product development (across design, engineering, and business).
— Experience and deep interest in AI-enabled workflows and tools.
— Experience in pre-sales, consulting, or client interaction.
— A self-starter mindset — someone who brings ideas, not just executes tasks.
— Excellent communication and facilitation skills.
— Curiosity and drive to continuously explore, experiment, and improve.
— Ability to translate complex ideas into clear, actionable insights.
— Understanding of how businesses operate and how technology drives value.
— Experience with rapid prototyping and modern tools (LLMs, AI copilots, no-code/low-code platforms, etc.).
 

What Success Looks Like:
— Faster product development cycles through AI-driven improvements.
— Tangible examples of efficiency gains and innovation.
— Increased adoption of AI tools across teams.
— Increased number of new clients driven by improved delivery capabilities, visible innovation, faster execution, and AI-powered value delivery.
— New, unexpected ideas that push the company forward.
 

What we offer for you to succeed:

— Warm and friendly working environment with flexible start (from 8:00 to 11:00) based on personal preferences and team meetings.

— We put a healthy work-life balance first.

— Caring for physical and mental health.

— Speaking Club and English with a teacher.

— Volunteer projects that help the state get closer to victory.

— A space to grow both professionally and personally. A wide variety of exciting projects, the best hardware for your work, performance reviews, educational workshops, and team coaching.

— No tiresome bureaucracy. If you need something — just ask and get it.
 

Our employees describe working here as a welcoming, collaborative, and impactful experience. If you are a creative and energetic person, we cannot wait to see you on board!

We are looking for an AI/ML Engineer to build and scale AI-powered solutions for real-world use cases. This is a hands-on role focused on developing agentic systems, RAG pipelines and production-grade LLM integrations.

Requirements

• 4+ years of commercial development experience 
• Strong experience with LLM-based systems (RAG, agents, tools)
• Ability to design end-to-end AI architecture (data → retrieval → response)
• Experience with evaluation pipelines (golden datasets, metrics, LLM-as-judge)
• Solid understanding of prompt engineering and iteration
• Experience working with databases (Postgres) + vector search
• Understanding of data processing, PII detection, and safe data handling
• Familiarity with fine-tuning approaches (LoRA/QLoRA) and when to use them
• Ability to review and validate AI-generated code
• Strong engineering mindset (scalability, reliability, structured thinking)

Responsibilities

• Build AI-powered features using LLMs (Claude, OpenAI, etc.)
• Develop and optimize RAG pipelines
• Create AI agents and autonomous workflows
• Fine-tune and adapt ML/LLM models for specific use cases
• Integrate AI solutions into products via APIs
• Collaborate with the team and clients to deliver production-ready solutions

We offer

• Flexible working hours
• 20 working days paid vacation and 15 sick leaves
• Fully paid medical insurance
• English classes in the office
• No time trackers — ability to do quality work
• Friendly team and enjoyable working environment

We are looking for a proactive Middle QA / Business Analyst who can combine manual testing responsibilities with business analysis tasks and independently drive quality-related processes on the project.

Responsibilities

— Gather and document business and functional requirements
— Create clear user stories and acceptance criteria
— Prepare and maintain test cases, checklists, and related QA documentation
— Perform manual testing (functional, regression, exploratory)
— Verify implemented functionality against requirements
— Report and track defects, collaborate with developers on fixes
— Communicate with stakeholders regarding requirements and product quality
— Participate in planning and prioritization activities
— Support continuous improvement of QA and BA processes

Requirements

— 2+ years of experience in manual QA
— Experience with Business Analysis activities such as requirements gathering and documentation
— Understanding of SDLC and Agile methodologies
— Experience with Jira, TestRail, or similar tools
— Ability to write structured and testable requirements
— Strong analytical and communication skills
— Ability to work independently and take ownership of tasks
— English level: Upper-Intermediate or higher

About the role

We are sourcing a senior payments engineer for a US fintech client running a number of card tokenization deployments. The work centers on Mastercard Digital Enablement Service (MDES) and Visa Token Service (VTS) integrations — payment credential tokenization, lifecycle management, network certification, and supporting infrastructure for fintech rollouts.

This is not a generic "fintech experience" role. We are specifically looking for engineers who have shipped MDES or VTS in production, ideally at a card issuer, processor, or BaaS platform.

What you will work on

Card network tokenization flows (MDES and/or VTS) Token provisioning, lifecycle, and de-tokenization Network certification and compliance work Integration with card management systems, HSMs, and issuer/processor APIs Cross-functional work with payments product, risk, and infrastructure teams

Required

5+ years in payments engineering Production experience with MDES or VTS (not adjacent, not "exposure" — actual ship-to-prod work) Strong backend engineering (Java, Go, Python, or Node.js depending on stack) Familiarity with PCI DSS scope, HSM integration patterns, tokenization standards Comfortable working directly with a US-based product team in their working hours (some overlap required)

Nice to have

Background at Mastercard, Visa, Marqeta, Galileo, Stripe Issuing, Adyen, Thredd, GPS, Worldpay, Fiserv, or a similar issuer/processor/BaaS EMV / 3DS / ISO 8583 working knowledge Experience with Apple Pay / Google Pay / Samsung Pay provisioning flows Card issuing background (BIN sponsorship, KYC integrations, dispute flows)

Engagement details

Start: ASAP (within 2-3 weeks of selection) Duration: Multi-deployment scope, initial commitment 3-6 months with strong likelihood of extension Mode: Embedded full-time (40h/week) or senior project consulting (20-30h/week) depending on your availability Working hours: Some overlap with US Eastern timezone required (at least 3-4 hours)

How to apply

Reply with your CV and a short note covering:

1. The specific MDES or VTS production work you have shipped (network, issuer, processor, what role you played)
2. Your current availability and earliest possible start date

Thank you. 

We are looking for a Python Developer with 4+ years of commercial experience to join our engineering team and work on scalable, production-ready solutions for international projects.

You’ll collaborate with experienced developers, participate in architecture discussions, and build reliable backend services using modern technologies and best engineering practices.

Requirements

• 4+ years of commercial Python development experience
• Strong knowledge of Python and OOP principles
• Experience with FastAPI, Django, or Flask
• Experience building REST APIs and backend services
• Good understanding of SQL and relational databases (PostgreSQL/MySQL)
• Experience with Docker and containerized environments
• Familiarity with CI/CD processes
• Experience with Git
• Understanding of software architecture and clean code principles

• Upper-Intermediate English

   

Nice to Have

• Experience with AWS/GCP
• Experience with Kubernetes
• Knowledge of async programming
• Experience with Redis, Celery, RabbitMQ, or Kafka
• Understanding of microservice architecture

• Experience with automated testing

   

Responsibilities

• Develop and maintain backend services and APIs
• Design scalable and maintainable solutions
• Participate in code reviews and technical discussions
• Optimize application performance and reliability
• Collaborate with cross-functional teams
• Contribute to architecture and product improvements

We Offer

• Real production projects
• Flexible working format
• Strong engineering culture
• Professional growth opportunities
• Modern technology stack
• Opportunity to influence technical decisions

NeduAI is a Finnish GovTech startup at the intersection of education and public sector service delivery. We're building SmartProfile — a "neural hub" connecting skills, jobs, and education — replacing static resumes and outdated job boards with a data-driven, human-centered career ecosystem.

We partner with Finnish municipalities (Vantaa, Kotka), Unemployment Funds (A-kassa), Trade Unions, and educational institutions (XAMK, Laurea). You're joining at a critical scaling phase as we expand from Finland to a broader Nordic presence.

What you'll own:

• Lead the engineering team, set best practices, and own the technical roadmap
• Drive migration from AWS/Azure to EU-based sovereign infrastructure
• Manage PostgreSQL + Vector store architecture powering ML features and RAG capabilities
• Ensure GDPR & AI Act compliance, OAuth/MFA, data encryption
• Architect and scale RESTful APIs integrating SmartProfile with client systems
• Lead development of Assistant PRO — an AI agent for public sector administrators

What we're looking for:

• Proven experience leading technical teams
• Expert backend development (Python, Node.js, or Go) + distributed systems
• Kubernetes, containerization, production workloads (99.5%+ SLA)
• AI integrations, Vector Databases + PostgreSQL
• LLM fine-tuning, monitoring, and agentic workflow experience
• OAuth 2.0, encryption protocols, data privacy regulations
• Automated testing and monitoring/DevOps practices

24PLAY is a product company from Ukraine that has been developing and publishing mobile games since 2019. We are a team of professionals who have launched dozens of popular games and gained over 100 million satisfied players worldwide. Our games include Zombiepunk, Bliezkrieg Assault, Street Dude, and more.

As a Diia City resident, we offer employee reservation starting from the first day of employment.
 

We are currently looking for a Business Developer to share our core company values:

• Creativity: We actively encourage and embrace each other’s ideas, transforming them into reality through collaboration and innovative thinking.
• Integrity: We commit to providing honest feedback and realistically assessing situations, fostering a culture of trust and transparency.
• Productivity: We strive to optimize our workflows to achieve the best possible results in the shortest timeframe, ensuring efficiency and effectiveness in our operations.
• Uncompromising Quality: Our commitment to excellence drives us to prioritize the quality of our work above all else, ensuring that we consistently deliver outstanding results.

• Healthy Lifestyle: We advocate for a healthy lifestyle and stand against harmful habits, promoting well-being and balance within our team.

   

We are looking for a professional for the role that requires:

• Full-time job;
• Office-based in Kyiv. 
   

Responsibilities

• Identify and develop new business opportunities in the game development outsourcing market.
• Build and maintain strong, long-term relationships with clients and partners.
• Conduct market research to identify potential leads and industry trends.
• Present company services to prospective clients through calls, meetings, and events.
• Manage the full sales cycle - from lead generation to contract negotiation and closing deals.
• Collaborate with internal teams to prepare proposals and ensure successful project delivery.
• Represent the company at gaming conferences, exhibitions, and online communities.

Requirements

• 2+ years of experience in business development or sales specifically within the game development industry.
• Excellent written and spoken English (Upper-Intermediate or higher).
• Strong negotiation, communication, and presentation skills.
• Proven track record of generating new business opportunities and closing deals.
• Understanding of the gaming industry, production pipelines, and outsourcing models.
• Self-driven, result-oriented, and able to work independently.

Why join our team?

• Fully Legal: Official employment in full compliance with Ukrainian labor legislation, including paid vacation (24 days) and sick leave (unlimited).
• Professional Team: A high-performing group of skilled individuals committed to excellence.
• No Overtime: We prioritize a healthy work-life balance, with no overtime required.
• Stable Payments: No payment delays since the foundation of the company.
• Bonus System: A unique reward system designed to motivate employees by aligning their performance with the company’s financial goals.
• Professional Development: Access to mentorship programs and our internal library for continuous growth.
• Events: Enjoy board games, masterclasses, corporate events, sports activities, and free English classes.
• Comfortable Workspace: A modern office in Kyiv featuring a spacious lounge, fully-equipped kitchen, sports zone, cinema, and complimentary spa facilities for employees.
• 35-Hour Work Week: Reduced working hours as a benefit for experienced employees.

We are looking for a Senior .NET FullStack Engineer with React (Azure) to join our team!

Our client is a precision mental health company on a mission to make high-quality, evidence-based digital mental health support accessible at scale. Their platform transforms deep clinical expertise into trusted, personalized, and measurable digital experiences that help people improve their mental well-being. Working with digital health partner companies across the US, they combine AI, rigorous clinical science, and human-centered design to deliver meaningful real-world outcomes.

Project technical stack:

• Backend: .NET/C#, REST APIs, Auth0, third-party integrations 
• Frontend: TypeScript, React, react-query, react-hook-form, tailwind, lottie (animation), jest, testing-libraty/react
• Cloud: Azure
• Data & Storage: Azure SQL, Cosmos DB, Blob Storage, Azure Storage 
• DevOps, Infrastructure & CI/CD: GitHub, Azure Pipelines, Docker, Kubernetes, Terraform, Grafana

Responsibilities:

• Design, develop, test, document, and maintain solutions across backend and frontend
• Deliver new features end-to-end with strong ownership and accountability, while maintaining and improving existing solutions
• Build secure, scalable, reliable, high-quality, and high-performance applications
• Work effectively in a cross-functional team, collaborating closely with Product, QA, DevOps, Data, AI, and Engineering stakeholders
• Communicate confidently in a multinational environment with business, engineering, marketing, and clinical stakeholders when needed
• Actively apply AI-assisted approaches across solution design, coding, testing, debugging, and delivery workflows
• Participate fully in Agile/Scrum ceremonies
• Troubleshoot complex issues, perform root-cause analysis, and investigate new tools and approaches
• Contribute to technical decisions, architecture discussions, and engineering best practices

Requirements:

• 5+ years of professional software engineering experience
• Strong commercial experience with .NET/C#
• Strong commercial experience with React/TypeScript
• Proven full-stack delivery experience across frontend and backend systems
• Strong experience building and consuming REST APIs
• Solid production experience with Microsoft Azure
• Solid understanding of SOLID principles, design patterns, and microservices architecture
• Strong understanding of version control, security best practices, and Agile methodologies
• Strong Agile delivery experience with a focus on speed and quality
• Startup mindset: adaptable, fast-moving, pragmatic
• Result-oriented mindset with ownership mentality
• Excellent communication and collaboration skills, able to lead conversations and drive alignment
• Able to work independently and as part of a team
• Proactive, responsive, and dependable with a strong ownership mindset

Nice to have

• Experience in healthcare, mental health, or other regulated industries
• Experience building AI-powered product features
• Practical experience using Anthropic Claude Code to improve SDLC
• Testing and test automation experience
• Python experience
• Data engineering experience
• Strong DevOps & CI/CD practices

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

We are building a fully automated self-service registration system for MongoDB databases, implemented entirely in n8n. The system allows internal users to request new MongoDB databases or access to existing ones, handles an owner-based approval flow, and manages secure one-time password delivery — all without manual admin intervention.

The project is well-specified: a detailed technical concept and a phased workplan are ready. Your job is to implement it.

What You Will Build

The system consists of 7 n8n workflows:

- WF-01 – Registration form with routing logic

- WF-02a – Reusable sub-workflow: user creation via MongoDB Ops Manager API

- WF-02b – Database initialization (3 collections + vector search index)

- WF-03 – Access request flow for existing databases

- WF-04 – Owner approval form (approve / reject with permission levels)

- WF-05 – One-time password reveal form (secure, token-based)

- WF-06 – Scheduled cleanup (expired tokens, user deletion, notifications)

Supporting infrastructure: 3 n8n Data Tables, Microsoft Outlook integration, and MongoDB Ops Manager REST API integration.

The project is structured in 4 phases, each ending with a testable milestone. Phase 0 consists of PoCs to validate all external connections before any workflow is built.

## Your Responsibilities

- Implement all workflows according to the provided concept and workplan

- Conduct PoCs for MongoDB Ops Manager API, MongoDB direct connection (admin credential, dynamic database naming), vector search index creation, and Outlook integration

- Build and test token-based forms (password reveal, approval)

- Set up n8n Data Tables and credential management

- Perform end-to-end tests for both registration scenarios (new DB and access request)

- Handover with documentation of any deviations from the concept

Required Skills

- n8n – solid hands-on experience building multi-step workflows, including Webhook Triggers, Form Triggers, Execute Workflow, Code Nodes, and HTTP Request Nodes

- REST API integration – comfortable reading API docs and translating them into HTTP Request Nodes

- MongoDB – understanding of databases, collections, users, and roles; experience with the MongoDB driver or direct connections

- JavaScript – for Code Nodes (password generation, token logic, dynamic expressions)

- Microsoft Graph API / Outlook – experience sending emails from n8n or similar tools via OAuth2

Nice to Have

- Experience with MongoDB Ops Manager or MongoDB Atlas Admin API

- Familiarity with MongoDB Vector Search and index configuration

- Experience with n8n Data Tables and n8n's self-hosted setup

- Experience building secure, token-based one-time-use forms in n8n

Project Details

 Phases 0–4 as defined in the workplan 

 All 7 workflows implemented and tested in n8n, handover documentation |

Collaboration Close coordination with the project lead during PoC phase; largely autonomous implementation afterwards |

Environment n8n instance provided; MongoDB Ops Manager and Outlook credentials will be made available

How to Apply

Please send a short introduction and relevant project references, include examples of n8n workflows you have built, particularly any involving REST API integrations, dynamic data handling, or form-based user flows.

Fullstack Developer (Backend-focused) — Java / AWS / React

We are looking for an experienced Senior Fullstack Developer (Backend-focused) to join a long-term project in partnership with a global consulting company.
 

You will work on digital products for a Belgium-based telecommunications company, supporting major media and entertainment platforms across Belgium and the Netherlands.
 

💻 What you’ll do

• Develop and maintain backend APIs
• Support and improve existing backend and frontend applications
• Fix bugs and ensure system stability
• Identify opportunities for product and technical improvements
• Collaborate with stakeholders, developers, and product teams
   

🧠 About the role

You will be part of a cross-functional team working on cloud-based applications used across the organization.

This role is ideal for someone who:

• enjoys building scalable backend systems
• can balance speed and technical quality
• is comfortable working in a collaborative environment
• cares about clean architecture and long-term product health
   

✅ Requirements

Backend & Architecture

• 3+ years with microservices architecture
• Strong experience with Java 21+
• Solid knowledge of Spring Boot / Spring Framework

Cloud & Infrastructure

• 5+ years with AWS (ECS, SQS, SNS, API Gateway, CloudWatch, etc.)

Databases

• MongoDB (CRUD, 3+ years)
• SQL (PostgreSQL or SQL Server)

Frontend

• 1+ year with React / JavaScript

General

• REST APIs, HTTP, JSON
• Agile (Scrum / Kanban)

• English — Upper-Intermediate+

   

⭐ Nice to have

• Advanced Spring (AOP, OpenFeign)
• AWS Lambda, DynamoDB
• Data tools (Snowflake, DBT, Airflow)
• Quarkus, Thymeleaf
• Experience with GDPR or marketing platforms

🤝 What matters for us

• Strong communication skills
• Ability to work in a team
• Focus on quality over quantity
• Proactive mindset and ownership

⚠️ Application Policy
Please note that we expect candidates to complete all stages of the hiring process independently, without the use of AI assistance.
Our goal is to fairly assess your personal skills and experience.
 

We’re looking for a Senior Full Stack Engineer to join a Web3 project.

The project is based on ZK-proof technology (zero-knowledge proofs), enabling decentralized verification of user attributes without directly exposing personal data.

Responsibilities:

• Design, develop, and implement blockchain solutions using Node.js, JavaScript, and TypeScript, following clean code principles
• Collaborate with the team to define project requirements and architecture for blockchain-based applications
• Integrate blockchain functionality into new and existing systems and applications
• Perform code reviews and ensure the quality and security of the developed software
• Develop and maintain tests for components
• Collaborate with other developers and stakeholders to identify and implement improvements.

Professional requirements:

• Strong knowledge of JavaScript/Typescript, with a focus on writing clean, maintainable code
• 3+ years of commercial experience as a full-stack engineer with NodeJS (NestJS)
• Strong understanding of the event loop in Node.js and its implications on application performance and scalability
• 2+ years of commercial experience with ReactJS/Next.js
• Familiarity with asynchronous programming concepts, including Promises and async/await
• Experience with optimizing code performance and addressing blocking and concurrency issues in event-driven systems
• Solid understanding of blockchain technology, cryptographic principles, and decentralized systems
• Experience with viem, ethers.js or similar libraries for interacting with blockchain networks
• Strong problem-solving skills and the ability to troubleshoot complex issues;
• Proficiency in writing unit tests, integration tests, and end-to-end tests for Node.js and blockchain components
• Experience with PostgreSQL databases and query languages (e.g. SQL)
• Familiarity with database design and optimization principles

Will be a plus:

• Experience in designing and maintaining SDKs and public-facing components
• Understanding of, or hands-on experience with, decentralized or multi-party protocols
• Solid understanding of zero-knowledge proofs (ZKPs) and their applications

We offer:

• Competitive compensation
• Social package (24 working days of annual leave, 5 paid sick days)
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel teams
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility