Jobs at Djinni

Now we are looking for a part-time Support Office Manager to support our office in Krakow, Poland for approximately 2-3 hours per day. In this position, you will be expected to perform office duties such as organizing company events, administrative support for colleagues, and in general making sure that the office is running smoothly.

Requirements:

• Fluent and excellent communication skills in English (C1);
• Polish language at an intermediate level (B1);
• Good knowledge of MS Office packages and tools for remote work (Slack, Outlook, Excel, Jira);
• Experience working with Google Docs, Google Sheets, and other Google Workspace applications;
• Able to be present in the office as needed;
• Organizational skills, and responsibility.

Responsibilities:

• Providing administrative support (scheduling appointments, maintaining office supplies, etc);
• Oversee the day-to-day operations of the office space (coordinating repairs, managing office equipment, and overseeing office security);
• Personnel management tasks such as conducting orientation for new employees, and managing employee records;
• Monitoring and controlling office expenses, preparing financial reports, and coordinating with the finance department;
• Planning and coordinating company events (meetings, conferences, parties, etc) which includes arranging venues, managing logistics, coordinating with vendors, and ensuring the smooth execution of the events;
• Maintaining files, records, and databases, as well as ensuring compliance with data protection and privacy regulations;
• Improvement of the office efficiency and productivity;
• Support administrative staff when needed.

Nice to Have:

• Experience in working in a remote/hybrid company;
• 2+ years of experience in a similar position, preferably in an organization with international, multicultural experience and in the growth phase;
• Very good organization of your own work and space around you;
• Awareness that cordiality and the ability to build good relationships with colleagues is the key to success in this role;
• Communicative Russian language skills (B1-B2) is a plus.

Working Conditions:

•  2-3 hours per day;
• Target start date: ASAP.

Locations:Poland, Krakow

Gamzix is a high-growth international licensed iGaming provider, creating high-performing games and scalable, cutting-edge solutions for the global market.
Our team of 140+ specialists operates globally, with Warsaw as our main hub office. We are driven by continuous improvement and a people-first culture where we communicate openly, win together, and truly enjoy the game we’re building.
We operate under an MGA B2B Critical Supply License and certifications from iTechLabs and GLI, ensuring our products meet high standards of quality, compliance, and performance across markets.
 

As part of our strategic growth, we are partnering with a dedicated product team AviaJet, focused on building a new generation of instant and crash games for the iGaming market.
 

We are looking for a Product Manager who will play a key role in developing new game concepts and leading the full lifecycle of instant games — from idea and market research to launch and product performance analysis.
 

This role is part of a dedicated product initiative developed in partnership with Gamzix, and the selected candidate will work closely with the AviaJet product team.
 

Responsibilities

— Conduct competitor research and analyze the instant / crash games market
— Generate and validate product hypotheses for new game mechanics
— Design and shape game concepts and gameplay mechanics
— Identify and research new game mechanics and player engagement patterns
— Prepare detailed product specifications and technical documentation
— Work closely with designers, developers, and other specialists to bring the game concept to life
— Manage the full product lifecycle from concept and specification to release
— Ensure smooth delivery of the product to production
— Analyze product performance after release and measure the success of game mechanics
— Continuously improve product features based on data and player behavior
 

Requirements

— 3–5 years of experience as Product Manager, Game Product Manager, or similar role
— Experience in iGaming or GameDev industry
— Strong understanding of product metrics and product lifecycle
— Hands-on experience with:

• product hypotheses validation
• A/B testing
• UX optimization

— Strong product mindset and ability to take ownership of the product from idea to release
— Ability to work independently and collaborate with cross-functional teams
 

Will be a plus

— Experience working with crash or instant games
— Experience designing game mechanics
— Background in data-driven product development
 

What we offer

— Competitive market-level compensation in the iGaming industry
— Fully remote format
— Opportunity to build new game products from scratch
— Direct collaboration with product stakeholders and decision-makers
— Fast decision-making and startup-like environment
— A chance to influence the future portfolio of instant and crash games
 

Please note that feedback on your application will be provided within two weeks if a positive decision is made regarding your candidacy.
 

I give my consent in accordance with the Law on the Protection of Personal Data dated June 1, 2010, No. 2297, effective from January 1, 2011, for the processing of information classified as personal data.

Intetics Inc., a global technology company providing custom software application development, distributed professional teams, software product quality assessment, and “all-things-digital” solutions, is seeking a highly skilled and experienced Middle/Senior Embedded Engineer to join our dynamic team on a full-time basis.

Responsibilities

• Design, develop, and maintain embedded firmware according to product requirements.
• Implement new features and enhancements using C and C++.
• Contribute to firmware architecture and system-level design decisions.
• Participate in requirements analysis, feasibility studies, and technical risk assessments.
• Develop firmware for ARM Cortex-M microcontroller-based systems.
• Work with both Bare-Metal and FreeRTOS environments.
• Design and implement low-level drivers and hardware abstraction layers.
• Integrate and maintain communication interfaces and protocols, including UART, SPI, and I2C.
• Debug and validate embedded systems using development software and laboratory tools.
• Review, optimize, maintain, and extend existing firmware codebases.
• Support hardware development activities, including schematic and PCB reviews.
• Identify and define hardware requirements based on firmware and system needs.
• Prepare and maintain technical documentation using Doxygen, Confluence, or similar tools.
• Participate in code reviews and technical discussions.
• Collaborate closely with distributed firmware, hardware, architecture, and project teams.

• Deliver technical tasks and project milestones within agreed timelines.

   

Requirements

Must-haves

Embedded Firmware Development

• 3-5+ years of hands-on experience in embedded firmware development for microcontroller-based systems.
• Strong programming skills in C.
• Strong commercial experience with C++ and object-oriented programming.
• Commercial experience developing firmware for ARM Cortex-M microcontrollers, including M0, M0+, M3, M4, or M7.
• Hands-on experience with FreeRTOS or similar real-time operating systems.
• Experience with Bare-Metal embedded development.
• Experience designing and implementing low-level drivers and hardware abstraction layers.
• Ability to understand, maintain, optimize, and extend large or mature firmware codebases.

Hardware and Electronics

• Strong understanding of embedded electronic systems.
• Good understanding of electronics and hardware-software integration.
• Ability to read and analyze analog, digital, and power-electronics schematics.
• Experience identifying hardware requirements based on firmware and system needs.

Communication Interfaces

• Practical experience with UART, SPI, and I2C communication protocols.

Architecture and Debugging

• Experience debugging and troubleshooting embedded systems using development and laboratory tools.
• Understanding of embedded system architecture and system-level design principles.
• Ability to contribute to firmware architecture and technical design decisions.
• Ability to use block diagrams, conceptual designs, pseudocode, and other system-design techniques.
• Strong analytical and technical problem-solving skills.

Development Tools and Processes

• Experience with Git-based version control.
• Experience with Jira or similar issue-tracking systems.
• Experience preparing technical documentation using Doxygen, Confluence, or similar tools.
• Familiarity with code review practices and structured development workflows.

Nice-to-have

• Experience making firmware architecture and system-level design decisions.
• Experience with safety-critical, industrial, IoT, certified, or regulated electronic products.
• Good knowledge of PCB design principles for EMC compliance and EMI reduction.
• Experience with Ethernet, Wi-Fi, and network-connected embedded devices.
• Familiarity with cloud services and IoT architectures.
• Understanding of cybersecurity principles for embedded and connected products.
• Experience with Linux-based embedded systems or Linux kernel development.
• Experience with UML or other system-modelling methodologies.
• Familiarity with fire detection, emergency lighting, or central battery system applications.

Project description

Our client is a Swiss leader in online trading, serving over 500,000 clients who can trade more than 3 million products through highly performant and secure platforms. In addition to various online trading products, including stocks, bonds, funds, derivative products, and cryptocurrencies, we also offer Forex, Robo-Advisory, and Mortgage solutions.

Since 2012, we have developed innovative and cutting-edge digital solutions that help customers achieve their investment goals. Our solutions are continuously evolving, transitioning into atomic microservices and self-contained systems.

Your mission is to deliver high-quality and human-centered design concepts and collaborate with your team and other stakeholders to provide the best solutions on time.

Responsibilities

Identify and realise user personas, user flow, and user journeys

Produce complete wireframes and prototypes

Provide intuitive and modern digital interfaces

Deliver daily UI tasks respecting the timing

Use & support the current Design System

Support and propose documentation for components and design patterns

Demonstrate communication skills and articulate your design decisions to the stakeholders

Collaborate with other designers to maintain design consistency

Skills

Must have

5+ years of experience in web and UX design, with experience in the finance, banking, or insurance sectors.

Knowledge of Atomic Design

Experience with a Design System

Strong English skills are mandatory for client communication

Proficiency in Figma, including team libraries, auto layout, component properties, branching, and variables

Good understanding of user personas and user flows

Ability to demonstrate a portfolio showcasing UX and UI design work, including the process behind it

Flexible and client-oriented mindset

Continuously staying up to date with the latest UX/UI trends

A team player who enjoys working, interacting, and learning with a remote team of professionals

Highly organised, autonomous, and detail-oriented

Nice to have

Knowledge of HTML & CSS & Creative suite is a plus

UI animation is a plus

We are looking for a Technical Support Specialist (L1/L2) to join our support team and provide customer-facing technical assistance for hardware, software, and connectivity-related issues.
In this role, you will handle first- and second-level support requests, troubleshoot Windows environments and basic network problems, assist with device (IoT / data logger) configuration, and escalate complex technical cases to higher-level engineering teams when needed.

You will work closely with Team Leaders, QA, Operations, and Engineering to ensure high-quality service delivery, accurate documentation, and continuous process improvement.

This role combines technical troubleshooting with customer communication and requires a structured, solution-oriented mindset.

Requirements:

Experience in L1/L2 technical support or IT service desk roles
Basic knowledge of Windows Server environments
Basic MS SQL knowledge (user-level: queries, validation, data checks)
Fundamental understanding of network technologies and protocols
Experience configuring or supporting IoT devices or measurement data loggers (or strong willingness to learn)
Confident written and spoken English
Independent, reliable, and detail-oriented working style
Technical and solution-oriented mindset
Strong interpersonal and communication skills
 

Responsibilities:

Provide L1/L2 technical support via email, chat, and calls
Troubleshoot Windows environment issues and basic network connectivity problems
Perform basic MS SQL checks and validate measurement or system data
Support configuration and deployment of IoT devices / data loggers following documented procedures
Collect logs, reproduce issues, and prepare structured escalations for L3 / Engineering teams
Maintain accurate ticket documentation in CRM/helpdesk systems
Follow internal workflows, SLAs, and quality standards
Contribute to knowledge base creation and continuous process improvements
Collaborate with Team Leaders, QA, Operations, and Engineering
 

Would be a plus

Experience with Zendesk similar ticketing platforms
Previous BPO / outsourcing experience
Technical education or certifications
Experience supporting SaaS or hardware-enabled products
Familiarity with structured troubleshooting methodologies
 

Work conditions

24/7 schedule
M - 8:00-16:00
D - 16:00-0:00
N - 0:00-8:00

We are looking for an experienced Python Developer to contribute to the development, improvement, and maintenance of modern backend services and web applications.

We need a self-driven specialist who is confident not only in backend development but also understands application deployment and operations in AWS cloud infrastructure using Kubernetes.

Key Responsibilities

• Develop and maintain backend services using Python.
• Design and implement REST APIs.
• Work with an existing codebase, including optimisation and refactoring.
• Design the architecture of individual services and modules.
• Integrate third-party services and external APIs.
• Work with relational databases.
• Write and optimise SQL queries.
• Containerise applications using Docker.
• Deploy and support applications in Kubernetes.
• Work with AWS infrastructure and cloud services.
• Participate in setting up and improving CI/CD processes.
• Write unit and integration tests.
• Participate in code reviews.
• Troubleshoot issues and analyse system performance.
• Take part in technical discussions and task estimation.
• Collaborate with frontend developers, QA engineers, DevOps engineers, and other team members.

• Maintain technical documentation.

   

Requirements

• 5+ years of commercial experience in Python development.
• Strong knowledge of Python 3.
• Practical experience with FastAPI, Flask.
• Experience developing and maintaining REST APIs.
• Strong SQL knowledge.
• Commercial experience with PostgreSQL or another relational database.
• Practical experience with AWS.
• Practical experience with Kubernetes.
• Experience containerising applications with Docker.
• Understanding of CI/CD principles and practical experience supporting or configuring CI/CD pipelines.
• Understanding of OOP, SOLID, DRY, and KISS principles.
• Experience writing automated tests using Pytest, Unittest, or similar tools.
• Experience with Git.
• Understanding of client-server and microservices architecture.
• Understanding of basic web application security principles.
• Ability to independently analyse requirements, break down tasks, and estimate delivery timelines.
• English level sufficient for reading technical documentation and communicating within the team.

Join one of Europe’s fastest-growing certification and audit firms focused on information security, AI governance, and digital resilience.

At BALTUM Bureau, you will work with technology companies, fintechs, SaaS providers, cloud platforms, AI companies, and multinational organisations across Europe, the UK, and North America, delivering internationally recognised ISO certifications and regulatory compliance assessments.

Our organisation is built on a foundation of technical expertise, professional independence, and a commitment to delivering rigorous, high-quality audit services. 

Our areas of expertise include:

Management System Certification - ISO/IEC 27001 (Information Security), ISO 9001 (Quality Management), ISO 22301 (Business Continuity), ISO 42001 (AI Management Systems), ISO 27701 (Privacy Information Management)

Regulatory Compliance Assessments - DORA (Digital Operational Resilience Act), NIS2 Directive, GDPR, EU AI Act

Our clients include:

• SaaS companies
• Cloud service providers
• FinTech & Payment Institutions
• AI Companies
• Healthcare Technology
• Critical Infrastructure
• Enterprise organisations

Requirements:

• 0,5+ years of experience as an Affiliate Manager in iGaming;
• Working with RS, hybrid, CPA models;
• A well-established database of loyal affiliate partners;
• Proficiency in traffic analysis;
• Exceptional communication skills;
• Ability to approach tasks comprehensively and diversely;

• Upper-Intermediate level of Arabic.

   

Responsibilities:

• Actively search and negotiate with potential partners;
• Conduct competitive analysis and apply insights to optimize traffic and affiliate programs;
• Acquire, retain, and activate new affiliates and partnerships;
• Analyze partner-generated traffic for quality;
• Achievement of KPIs on a regular basis;
• Provide technical support to partners and configure all necessary segments that partners may require;
• Maintaining and cultivating strong relationships through regular contact, including meetings, phone calls, and emails, as well as representing our company effectively in professional conferences.

Benefits:

• Flexible Working Environment: Work from our modern Limassol office or remotely from any location
• Annual Loyalty Bonus: Receive a yearly bonus every February as recognition of your dedication
• Professional Growth: Attend global exhibitions and conferences, and improve your skills with company-sponsored English courses
• Performance Reviews: Regular feedback sessions to track progress and discuss career development
• Team Spirit: Participate in teambuilding activities and company-wide celebrations
• Personal Milestones: We celebrate your important life events, from birthdays to professional achievements

Join us for an innovative journey where your expertise shapes our brand’s success. In a collaborative setting with growth opportunities, you’ll lead the evolution. 

Ready to shape the future?

• Our client is a Swiss leader in online trading, serving over 500,000 clients who can trade more than 3 million products through highly performant and secure platforms. In addition to various online trading products, including stocks, bonds, funds, derivative products, and cryptocurrencies, we also offer Forex, Robo-Advisory, and Mortgage solutions.
   
  Since 2012, we have developed innovative and cutting-edge digital solutions that help customers achieve their investment goals. Our solutions are continuously evolving, transitioning into atomic microservices and self-contained systems.
  
  Your mission is to deliver high-quality and human-centered design concepts and collaborate with your team and other stakeholders to provide the best solutions on time.

   

• Responsibilities:

  ○ Identify and realise user personas, user flow, and user journeys
  ○ Produce complete wireframes and prototypes
  ○ Provide intuitive and modern digital interfaces
  ○ Deliver daily UI tasks respecting the timing
  ○ Use & support the current Design System
  ○ Support and propose documentation for components and design patterns
  ○ Demonstrate communication skills and articulate your design decisions to the stakeholders
  ○ Collaborate with other designers to maintain design consistency

   

• Mandatory Skills Description:

  ○ 5+ years of experience in web and UX design, with experience in the finance, banking, or insurance sectors.
  ○ Knowledge of Atomic Design
  ○ Experience with a Design System
  ○ Strong English skills are mandatory for client communication
  ○ Proficiency in Figma, including team libraries, auto layout, component properties, branching, and variables
  ○ Good understanding of user personas and user flows
  ○ Ability to demonstrate a portfolio showcasing UX and UI design work, including the process behind it
  ○ Flexible and client-oriented mindset
  ○ Continuously staying up to date with the latest UX/UI trends
  ○ A team player who enjoys working, interacting, and learning with a remote team of professionals
  ○ Highly organised, autonomous, and detail-oriented

   

• Nice-to-Have Skills Description:

  ○ Knowledge of HTML & CSS & Creative suite is a plus
  ○ UI animation is a plus

   

• Languages:
  • English: B2 Upper Intermediate
  • Ukrainian: C2 Proficient

Our client is a Swiss leader in online trading, serving over 500,000 clients who can trade more than 3 million products through highly performant and secure platforms. In addition to various online trading products, including stocks, bonds, funds, derivative products, and cryptocurrencies, we also offer Forex, Robo-Advisory, and Mortgage solutions.
 
Since 2012, we have developed innovative and cutting-edge digital solutions that help customers achieve their investment goals. Our solutions are continuously evolving, transitioning into atomic microservices and self-contained systems.

Your mission is to deliver high-quality and human-centered design concepts and collaborate with your team and other stakeholders to provide the best solutions on time.

• Responsibilities:

  ○ Identify and realise user personas, user flow, and user journeys
  ○ Produce complete wireframes and prototypes
  ○ Provide intuitive and modern digital interfaces
  ○ Deliver daily UI tasks respecting the timing
  ○ Use & support the current Design System
  ○ Support and propose documentation for components and design patterns
  ○ Demonstrate communication skills and articulate your design decisions to the stakeholders
  ○ Collaborate with other designers to maintain design consistency

• Mandatory Skills Description:

  ○ 5+ years of experience in web and UX design, with experience in the finance, banking, or insurance sectors.
  ○ Knowledge of Atomic Design
  ○ Experience with a Design System
  ○ Strong English skills are mandatory for client communication
  ○ Proficiency in Figma, including team libraries, auto layout, component properties, branching, and variables
  ○ Good understanding of user personas and user flows
  ○ Ability to demonstrate a portfolio showcasing UX and UI design work, including the process behind it
  ○ Flexible and client-oriented mindset
  ○ Continuously staying up to date with the latest UX/UI trends
  ○ A team player who enjoys working, interacting, and learning with a remote team of professionals
  ○ Highly organised, autonomous, and detail-oriented

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Senior Java Developer (Technical Consultant) to join our team and help build scalable, high-performance backend systems for fintech, AI, telecommunications, healthcare, and other high-load domains.

This role combines hands-on backend development with participation in architecture design, technical planning, and a consulting-driven approach to building reliable, scalable, and maintainable systems.

Responsibilities

• Design and develop scalable backend services and microservices using Java 17/21, Spring Boot, and Spring Cloud 
• Participate in architecture design, technical planning, and engineering decision-making 
• Build event-driven systems using Kafka or RabbitMQ and develop REST or GraphQL integrations 
• Improve system performance, scalability, reliability, and maintainability 
• Optimize application performance, database interactions, and backend processing flows 
• Collaborate closely with DevOps, QA, product, and engineering teams 
• Participate in code reviews and contribute to engineering best practices 
• Diagnose and resolve issues in production environments 
• Participate in technical discussions with clients and stakeholders when needed 
• Provide technical guidance, architectural recommendations, and mentorship 

Requirements

• Strong commercial experience with Java and Spring Boot/Spring Cloud 
• Strong experience designing and building microservices, REST APIs, and distributed systems 
• Strong understanding of software architecture principles and integration patterns 
• Experience with PostgreSQL or MySQL and Hibernate/JPA 
• Experience with Kafka, RabbitMQ, or other messaging systems 
• Experience optimizing application performance, scalability, and database interactions 
• Experience with Docker and CI/CD pipelines 
• Experience with at least one cloud platform such as AWS, GCP, or Azure 
• Strong debugging, troubleshooting, and problem-solving skills 
• Ownership mindset and responsibility for technical solutions and delivery quality 
• Ability to communicate technical decisions clearly to both technical and non-technical stakeholders 

Nice to Have

• Experience with Redis, Elasticsearch, or GraphQL 
• Knowledge of Kubernetes or Terraform 
• Experience working with high-load systems, caching, and observability tools such as Prometheus, Grafana, or ELK 
• Familiarity with event-driven architecture and asynchronous communication patterns 
• Experience participating in technical consulting, solution design, or system modernization initiatives  

What We Offer

• Work on real-world projects in fintech, AI, telecommunications, healthcare, and other modern domains 
• Opportunity to influence architecture and technical decisions 
• Clear growth path toward Tech Lead or Architect roles 
• Open engineering culture with transparent processes and strong technical collaboration 
• Flexible schedule and fully remote work opportunities

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Senior Fullstack Developer (Technical Consultant) to join our team and help design, build, and scale modern web products across fintech, AI, telecommunications, healthcare, automation, and other fast-growing domains.

This role is ideal for an engineer who is equally confident working across frontend and backend development, participates in hands-on implementation, and contributes to architecture, technical planning, and consulting-driven engineering decisions.

Responsibilities

• Design, develop, and maintain scalable frontend and backend solutions for modern web applications 
• Build and improve user-facing features, APIs, integrations, and business logic 
• Participate in architecture design, technical planning, and engineering decision-making 
• Develop responsive, maintainable, and scalable frontend applications using modern frameworks and reusable component architecture 
• Build reliable backend services, APIs, and integrations using scalable backend technologies and integration patterns 
• Work with databases, external services, and third-party platforms 
• Collaborate closely with product, design, QA, DevOps, and engineering teams 
• Improve system performance, maintainability, scalability, security, and user experience 
• Participate in and lead code reviews, technical discussions, and engineering best practices initiatives  
• Diagnose and resolve complex issues in products and production environments 
• Transform product requirements into practical technical solutions and architectural decisions 
• Contribute to long-term technical strategy and platform evolution 

Requirements

• Strong commercial experience as a Fullstack Developer with hands-on work across both frontend and backend systems 
• Strong knowledge of modern JavaScript and/or TypeScript 
• Experience with frontend frameworks such as React, Next.js, Vue, or similar technologies 
• Understanding of frontend architecture, state management, and scalable UI patterns 
• Experience developing backend services and APIs using Node.js/TypeScript, Java, .NET, or similar backend technologies 
• Strong understanding of REST APIs, integrations, authentication, and client-server architecture 
• Experience working with relational and/or NoSQL databases 
• Understanding of software architecture principles, component-based design, and maintainable application structure 
• Experience with cloud platforms such as AWS, GCP, or Azure 
• Experience with Docker, testing, debugging, Git, and CI/CD pipelines 
• Ability to work independently, make technical decisions, and clearly communicate trade-offs and architectural choices 
• Strong problem-solving skills with a focus on reliability, maintainability, and production quality 
• English level: B2 or higher 

Nice to Have

• Familiarity with Kubernetes and modern deployment workflows 
• Experience with GraphQL, messaging systems, or event-driven architecture 
• Understanding of frontend performance optimization and modern rendering approaches 
• Understanding of performance optimization, observability, and production support practices 
• Experience with design systems, frontend architecture, or scalable UI platforms 
• Familiarity with AI products, data-intensive systems, or third-party platform integrations 
• Experience participating in technical consulting, solution design, or tech leadership initiatives 

What We Offer

• Work on real-world products across multiple industries and domains 
• Opportunity to participate in technical discovery, architecture, and solution design 
• Collaboration with strong engineers, tech leads, architects, and product teams 
• Clear growth path toward Tech Lead, Solution Architect, or Engineering Lead roles 
• Open engineering culture focused on ownership, transparency, and continuous improvement 
• Long-term projects, flexible schedule, and fully remote work opportunities

We are looking for a Senior Data Engineer to design and build scalable data platforms that process large volumes of data for analytics, reporting, and business-critical applications.

You will work with distributed data processing systems, cloud infrastructure, streaming platforms, and modern data pipelines. We are looking for an engineer who can independently own production solutions and solve complex performance and architecture challenges.

Mandatory Skills

Programming & Data Processing

• Strong Python development skills
• Advanced SQL (complex queries, optimization, execution plans)
• Strong commercial experience with Apache Spark / PySpark
• Experience optimizing Spark jobs (partitioning, shuffle, joins, skew handling)

Data Engineering

• Experience building production-grade ETL / ELT pipelines
• Strong experience with Apache Airflow
• Strong hands-on experience with Apache Kafka
• Understanding of batch and streaming data processing architectures

Infrastructure & Storage

• Experience with relational databases (PostgreSQL, MySQL or similar)
• Data modeling and query optimization
• Hands-on experience with at least one cloud platform (AWS, Azure or GCP)
• Experience working with Docker, Linux, Git, and basic CI/CD pipelines

Desired Skills

• Databricks, Snowflake or similar cloud data platforms
• Kubernetes
• CDC pipelines (Debezium or similar)
• Modern analytical/storage systems (ClickHouse, Trino, Iceberg, Delta Lake)
• Monitoring tools (Grafana, Prometheus)

Responsibilities

• Build scalable batch and streaming data pipelines
• Develop and optimize Spark/PySpark data processing jobs
• Build Kafka-based ingestion and event-driven pipelines
• Design and maintain Airflow orchestration workflows
• Optimize SQL queries and improve pipeline performance
• Investigate production issues and improve system reliability
• Participate in architecture and technical design discussions

Senior-Level Expectations

• Independently design scalable data pipelines
• Debug and optimize distributed production systems
• Solve performance bottlenecks in Spark and SQL workloads
• Make technical decisions with minimal supervision
• Take ownership of production solutions end-to-end

Soft Skills

• Strong problem-solving skills
• Ownership and accountability
• Ability to work independently
• Good communication and collaboration skills
• Proactive engineering mindset

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Java Developer to join our backend team and contribute to building scalable, high-performance, and reliable microservices for modern products across fintech, AI, telecom, healthcare, and other high-load domains.

Responsibilities

• Design, develop, and maintain scalable backend microservices and APIs.
• Write clean, efficient, and well-tested code using Java (17/21) and Spring Boot.
• Work with event-driven architectures using tools like Kafka or RabbitMQ.
• Integrate with internal and external REST/GraphQL services.
• Collaborate closely with DevOps, QA, and product teams to deliver high-quality features.
• Participate in code reviews and help establish engineering best practices.
• Optimize backend systems for performance, reliability, and cost efficiency.

• Investigate and resolve production issues, contributing to CI/CD and observability improvements.

   

Requirements

• Strong knowledge of Java and hands-on experience with Spring Boot / Spring Cloud.
• Experience building REST APIs, microservices, and integrations.
• Solid understanding of relational databases (PostgreSQL/MySQL) and ORM frameworks (Hibernate/JPA).
• Familiarity with Docker, containerization, and CI/CD pipelines.
• Knowledge of software architecture principles: microservices, event-driven systems, clean architecture.
• Experience with Git, unit testing (JUnit), and debugging/profiling tools.

• Good problem-solving skills and ability to work in a fast-paced environment.

   

Nice to Have

• Experience with cloud platforms (AWS, GCP, Azure).
• Knowledge of Kafka, Redis, Elasticsearch, or GraphQL.
• Experience with Kubernetes, Helm, or Terraform.
• Understanding of caching strategies, messaging patterns, and high-load system design.
• Experience with performance tuning, monitoring (Prometheus/Grafana), and observability tools (ELK).

• Familiarity with ML/AI integrations or data pipelines.

   

We Offer

• Real-world projects in fintech, AI, telecom, and automation industries.
• Mentorship from senior engineers, tech leads, and architects.
• Personal development plan and a clear path toward Senior Java Engineer or Backend Architect roles.
• Access to internal workshops, best practices, and structured feedback.
• A collaborative engineering culture focused on transparency and continuous improvement.
• Long-term projects, flexible schedule, and a remote-friendly work environment.

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Java Developer to join our backend team in our Odesa office, located in the Primorskyi District.

You will contribute to building scalable, high-performance, and reliable microservices for modern products across fintech, AI, telecom, healthcare, and other high-load domains.

Responsibilities

• Design, develop, and maintain scalable backend microservices and APIs.
• Write clean, efficient, and well-tested code using Java (17/21) and Spring Boot.
• Work with event-driven architectures using tools like Kafka or RabbitMQ.
• Integrate with internal and external REST/GraphQL services.
• Collaborate closely with DevOps, QA, and product teams to deliver high-quality features.
• Participate in code reviews and help establish engineering best practices.
• Optimize backend systems for performance, reliability, and cost efficiency.

• Investigate and resolve production issues, contributing to CI/CD and observability improvements.

   

Requirements

• Strong knowledge of Java and hands-on experience with Spring Boot / Spring Cloud.
• Experience building REST APIs, microservices, and integrations.
• Solid understanding of relational databases (PostgreSQL/MySQL) and ORM frameworks (Hibernate/JPA).
• Familiarity with Docker, containerization, and CI/CD pipelines.
• Knowledge of software architecture principles: microservices, event-driven systems, clean architecture.
• Experience with Git, unit testing (JUnit), and debugging/profiling tools.

• Good problem-solving skills and ability to work in a fast-paced environment.

   

Nice to Have

• Experience with cloud platforms (AWS, GCP, Azure).
• Knowledge of Kafka, Redis, Elasticsearch, or GraphQL.
• Experience with Kubernetes, Helm, or Terraform.
• Understanding of caching strategies, messaging patterns, and high-load system design.
• Experience with performance tuning, monitoring (Prometheus/Grafana), and observability tools (ELK).

• Familiarity with ML/AI integrations or data pipelines.

   

We Offer

• Real-world projects in fintech, AI, telecom, and automation industries.
• Mentorship from senior engineers, tech leads, and architects.
• Personal development plan and a clear path toward Senior Java Engineer or Backend Architect roles.
• Access to internal workshops, best practices, and structured feedback.
• A collaborative engineering culture focused on transparency and continuous improvement.
• Long-term projects, flexible schedule, and a remote-friendly work environment.