Jobs at Djinni

We are looking for a skilled iOS Team Lead to join a high-performance engineering team building a next-generation crypto trading platform. You will work on user-facing mobile applications used for real-time trading, portfolio management, and financial operations in a fast-paced, data-driven environment. This role requires strong technical expertise, attention to performance and security, and a product mindset — as you will directly impact how users interact with trading systems, market data, and financial assets.

Details

Location: Ukraine/EU

Employment Type: Full-time, remote

Start Date: ASAP

Industry: Crypto / Trading / FinTech

Language Requirements: English — B2 or higher

Key Responsibilities

Design, develop, and maintain iOS applications for a crypto trading platform

Build responsive, high-performance UIs for real-time market data, charts, and trading flows

Integrate with backend services handling trading, order execution, and account management

Work closely with product, backend, and QA teams to deliver user-centric features

Ensure high standards of performance, stability, and security in financial applications

Implement secure authentication flows (2FA, biometrics, wallet integrations)

Participate in code reviews and contribute to architecture and technical decisions

Support release cycles, monitor app performance, and continuously optimize the product

Stay up to date with iOS ecosystem updates and mobile best practices

Requirements

4+ years of professional experience in iOS development

Strong knowledge of Swift and iOS SDK

Experience with modern iOS architectures (MVVM, Clean Architecture, or similar)

Hands-on experience integrating REST APIs and working with real-time data (WebSockets is a plus)

Solid understanding of mobile security best practices, especially in financial applications

Experience with Git-based version control systems

Familiarity with Agile/Scrum environments

Strong problem-solving skills and attention to detail

Ability to work independently in a fast-paced, product-driven environment

English level B2 or higher

Nice to Have

Experience in crypto, trading platforms, or financial applications

Experience with real-time systems, order books, or market data feeds

Knowledge of Combine, RxSwift, or SwiftUI

Experience implementing WebSockets or streaming data

Familiarity with CI/CD pipelines for mobile apps

Experience with mobile testing frameworks and automation

We’re looking for a Technical (Python) Support Engineer to keep our production applications stable and fast during weekend shifts. You’ll handle incident triage, bug fixes, and small improvements while collaborating with the core team when escalation is needed.

Shift on Weekend  13:00-19:00 (GMT +3)
 

What you’ll do

• Maintain and troubleshoot Python/Django web applications
• Debug and optimize database performance (PostgreSQL)
• Operate core AWS services (EC2, S3)
• Diagnose issues with cross-functional teams and implement quick fixes
• Keep code changes clean, documented, and secure
• Handle end-user requests and provide technical assistance

What we’re looking for:

• English: Upper-Intermediate or higher
• Experience: 6+ months with Python & Django OR no commercial experience but:
  • Completed relevant courses/bootcamps (Python, Django, Databases, AWS)
  • Strong fundamentals (data types, HTTP/REST, Git, basic Linux, debugging)
  • Hands-on projects (pet projects, labs, internships) — GitHub links welcome
• Solid knowledge of PostgreSQL (or another relational DB)
• Basic familiarity with AWS (EC2, S3)
• Strong analytical and debugging skills
• Basic understanding of REST APIs and front-end basics (HTML, CSS, JavaScript)
• Clear communicator; comfortable working independently and in a team

Nice to have

• Docker, Kubernetes, and CI/CD pipelines
• Web application security best practices
• Experience in an Agile environment
   

What we offer

• Paid part-time weekend shifts
• Flexible choice of shift blocks
• Supportive team and transparent processes
• Fast track to real production experience

ZBL is an international EdTech product company that builds, launches, and scales proprietary education brands in the Health & Fitness niche, powered by global influencers and performance marketing. We operate as a full-cycle model: from idea and product development to marketing, analytics, and operations — fully in-house.

Key Responsibilities:

• Plan, launch, and manage Meta (Facebook & Instagram) ad campaigns for multiple products and audiences.
• Conduct audience research, targeting, and segmentation to maximize ad performance.
• Monitor, analyze, and optimize campaigns to achieve KPIs (ROAS, CTR, CPA, etc.).
• Create, test, and iterate ad creatives, copy, and formats for maximum engagement.
• Manage ad budgets and bidding strategies to ensure cost-efficient campaigns.
• Prepare regular performance reports with actionable insights for the marketing team.
• Stay updated with Meta Ads Manager features, trends, and best practices.
• Collaborate with designers, copywriters, and marketing teams to ensure campaigns align with brand goals.

Requirements:

• Proven experience managing Meta Ads campaigns with measurable results.
• Strong analytical skills and experience using data to optimize campaigns.
• Knowledge of audience research, targeting, and ad segmentation.
• Experience with ad creative testing, copywriting, and A/B testing.
• Familiarity with ad budget management and bidding strategies.
• Excellent communication and collaboration skills.
• Ability to work independently and meet deadlines in a fast-paced environment.

Benefits:

• Health First: Free access to all our fitness products to stay in peak shape.
• Performance Rewards: Transparent bonus system, corporate English lessons, and rewards for outstanding achievements.
• Remote Culture: 100% remote work within a team of growth-oriented professionals.

We are looking for a Java developer with experience in building high-performing, scalable APIs and web applications.
You will be a part of a talented software development team that works on internal and external Company’s applications. You will work on new APIs as well as on supporting existing applications, refactoring, and creating new solutions, building scalable distributed systems, and integrating AI-powered capabilities into existing platforms.

Responsibilities
● Contribute in all phases of the development lifecycle including the communication with the clients and partners
● Helping Project manager to figure out the requirements and translate them to the actual tasks for the team
● Write well designed, testable and efficient code
● Ensure designs are in compliance with specifications
● Prepare and produce releases of software components
● Support continuous improvements by investigating new technologies and alternatives and presenting them for architectural review AI / Intelligent Systems Responsibilities
● Integrate AI/LLM-based capabilities into backend systems (e.g., APIs, data pipelines, internal tools)
● Design reliable orchestration flows for AI components (prompt pipelines, tool usage, fallback logic)
● Implement observability for AI systems (latency, cost, error rates, unsafe outputs)
● Ensure proper governance: validation, policy enforcement, and safe handling of AIgenerated outputs
● Work with structured and unstructured data sources to support AI-driven features
● Collaborate on designing systems where AI is a component of a larger architecture, not a standalone solution

Requirements!!!
● BS/MS degree in CS, Engineering or similar subject
● Good English
● 5+ years of proven hands-on software development experience
● Excellent knowledge of Java 17+
● Experience in Spring and Spring boot frameworks
● Experience with test-driven development
● Experience in developing web applications and REST APIs
● Good knowledge of *nix based OS
● Experience with K8s and building scalable multipod APIs
● Experience with next stack: JPA, Hibernate, AMQP(RabbitMQ/Kafka), SQL and noSQL databases, Feign, REST template, web sockets, OAuth2.0, JWT, Lombok, ElasticSearch AI / Data Experience (Preferred)
● Experience integrating external AI services (e.g., OpenAI, Anthropic, or similar) via APIs
● Understanding of prompt design and limitations of LLM-based systems
● Experience building or integrating RAG pipelines (vector search, embeddings, retrieval systems)
● Familiarity with data pipelines and preprocessing for AI-driven features
● Understanding of failure modes in AI systems and how to design around them
● Experience implementing guardrails, validation, and fallback mechanisms
Nice to Have
● Experience designing AI systems in regulated environments (compliance, auditability, traceability)
● Understanding of system-level AI architecture (separation of orchestration, business logic, and model layer)
● Experience with monitoring and cost control for AI workloads

About the role

We are a high-tech defense company at the forefront of innovation, is looking for a Data Compliance Specialist.

This role plays a key part in ensuring that sales processes are followed correctly - from lead intake to deal closure. It connects compliance, CRM governance, and operational analysis to keep sales processes clear, consistent, and efficient.

 

Key Responsibilities

• Monitor the accuracy and completeness of data processing in the CRM system and internal documents;
• Identify unclosed requests and leads and process them according to written instructions;
• Ensure adherence to SLA practices for timely lead assignment and follow-up;
• Maintain data accuracy, relevance, and cleanliness in the CRM;
• Ensure that deals, activities, agreements, notes, and statuses are properly and consistently recorded in the CRM;
• Monitor the execution of customer visits by managers.
  
   

Requirements and qualifications

• Strong attention to detail and a high level of organization;
• Analytical mindset and ability to work with large volumes of information;
• Ability to clearly formulate conclusions and recommendations;
• Strong communication skills and diplomatic approach when working with managers and leadership;
• High level of responsibility and ability to meet deadlines;
• Confident user of Microsoft tools: Excel, PowerPoint, Outlook;
• Hands-on experience working with CRM systems: Dynamics 365 Sales, HubSpot, Zoho, Salesforce, or similar;
• English level B2 or higher.
  
   

Nice to have

• Experience with Power BI;
• Experience in sales operations, compliance, CRM administration, or business analysis;
• Understanding of B2B sales processes and SLA practices.
  
   

What we offer

• Potential for career growth within the company depending on your interests;
• Competitive salary, official employment, employee reservation, social guarantees, and stable working conditions;
• 24 calendar days of paid vacation, paid sick leave, and all other benefits guaranteed by law.
• An atmosphere of trust, open communication, and leadership - initiative is welcomed, ideas are brought to life, and the team supports your progress.

We are seeking a skilled backend developer to take ownership of our trading account integrations, reporting, and subscription management systems. This role is critical to ensuring our prop firm runs reliably around account lifecycle management, end-of-day processing, subscription sync, and account integrity across multiple third-party trading platforms.
The ideal candidate has experience integrating with trading platform APIs (Tradovate, Rithmic, Ignite, cTrader, MetaTrader, CQG, or similar), strong REST API skills, and a track record of building reliable, failsafe systems in a high-volume trading environment.

Key Responsibilities 
● Own and manage all trading platform integrations — account creation, suspension, reactivation, and balance adjustments across our API (currently Ignite/Tickblaze) and any future platform integrations.
● Take full responsibility for end-of-day reporting workflows — ensure reports run reliably, process correctly, and update trader dashboards without disruption.
● Build monitoring and alerting around EOD failures, sync issues, and webhook delivery failures, so problems are caught before they impact traders or dashboards.
● Develop automatic recovery systems (retry logic with exponential backoff, token refresh, idempotent operations) to minimize downtime and manual intervention.
● Reconcile WooCommerce subscription statuses with trading accounts to ensure only paid users retain active accounts.
● Create audit tools to detect and clean up ghost accounts, orphan statistics, and balance chain inconsistencies.
● Handle webhook integrations with signature verification (Ed25519, HMAC) and replay protection.
● Collaborate with the WordPress/WooCommerce developers to ensure a smooth subscription-to-account creation flow.
● Maintain clear documentation and SOPs for all integration processes.
● Stay updated on trading platform API changes and best practices.

Qualifications Required 
● Proven experience integrating trading platform APIs in production. Rithmic (R|API+, RTrader Pro SDK), Tradovate, Ignite, cTrader, MetaTrader, or CQG all qualify — the underlying account management patterns transfer across platforms.
● Strong C# experience for backend service development.
● Experience with REST API consumption including pagination, retry logic, rate limiting, and authentication token management.
● Experience with webhook implementations including signature verification
(Ed25519, HMAC) and idempotent event processing.
● Experience building robust error handling, monitoring, and failover systems. As this system handles large amounts of money, resilient systems that notify on failures and handle them gracefully are critical.
● Strong SQL skills (PostgreSQL preferred) including debugging data integrity issues across related tables.
● Ability to work independently while coordinating with other developers on the team.

Preferred 
● Exposure to prop firm infrastructure, trader risk management, or drawdown/payout systems.
● Java / Spring Boot experience (current primary codebase; planned migration to C#).
● Docker and cloud deployment experience (AWS, DigitalOcean, Azure, or similar).
● CI/CD pipeline experience (GitHub Actions, GitLab CI, or similar).
● Exposure to compliance and audit requirements in fintech.
● Experience debugging distributed system issues — duplicate events, race conditions, cross-system timing bugs.

Work Environment & Expectations 
● Fully remote contractor engagement.
● Must maintain at least 5 hours of overlap with U.S. Eastern Time for meetings and collaboration.
● High responsiveness and accountability in a fast-moving, global team environment.
● Engagement typically requires 40+ hours per week, with flexibility to manage your own schedule while meeting deadlines.
● The system is up and running in production. You will be taking ownership of an
established integration stack and will have support during onboarding.

 

About Us

Our client is MilTech startup building an on-premises platform for automated annotation of UAV video and training computer vision models for autonomous flight.

We have a strategic partnership with one of the largest Ukrainian UAV manufacturers and access to what is likely the largest privately owned UAV video dataset in the world.

The company is at a very early stage — the funding is secured, the technical vision exists, and the data is available. Our focus now is building the core engineering team to turn this platform into reality.

The Role

We are looking for aComputer Vision / Machine Learning Engineer.

We are looking for  CV/ML Engineer to join as one of the first engineers on the team. You will work closely with the technical lead to build the ML pipeline from the ground up — implementing core components across data processing, model training, and deployment.

This is an early-stage startup, so the tech stack and processes are still being shaped. You will have real input into the tools and approaches we adopt, and your work will directly define how the platform operates. We are looking for someone who is hands-on, curious, and comfortable building things that don’t exist yet.
 

What You Will Work OnData Pipeline & Preprocessing

• Build video preprocessing pipelines: clip segmentation, frame extraction, scene detection, quality filtering
• Implement embedding extraction and data curation workflows for selecting diverse training subsets from a massive video corpus
• Prepare and export datasets in standard formats for training and annotation
   

Model Training & Experimentation

• Train and evaluate computer vision models for object detection, classification, tracking, and segmentation
• Run experiments, track results, and iterate on model architectures and hyperparameters
• Implement data augmentation strategies for robustness across weather, lighting, and occlusion conditions
• Contribute to distributed multi-GPU training pipelines
   

Active Learning & Annotation Support

• Implement auto-labeling pipelines with confidence-based routing
• Build tooling around the annotation platform (pre-annotation, format conversion, quality
• Maintain automated quality checks for label consistency
   

Edge Deployment

• Export and optimize models for inference on NVIDIA Jetson (ONNX, TensorRT, FP16/INT8quantization)
• Run accuracy and latency benchmarks on edge devices
• Help maintain the model delivery pipeline from training to deployment
   

Requirements Must Have

• 3+ years of hands-on experience in computer vision and deep learning
• Solid PyTorch skills — comfortable writing training loops, custom datasets, and model code
• Experience with at least one detection or segmentation framework (YOLO family, Detectron2, MMDetection, or similar)
• Understanding of model evaluation metrics (mAP, IoU, precision/recall)
• Familiarity with experiment tracking (MLflow, W&B, or similar)
• Python as primary language; clean, well-structured code
• Comfortable working in Linux and containerized environments (Docker)
   

Nice to Have

• Model optimization experience (ONNX export, TensorRT, quantization)
• NVIDIA Jetson or other edge/mobile deployment
• Multi-object tracking (ByteTrack, DeepSORT, or similar)
• Experience with video processing pipelines (FFmpeg, OpenCV, decord)
• Data curation or annotation tools (FiftyOne, CVAT, Label Studio)
• Distributed training (DDP, Ray Train)
• UAV / drone / robotics or MilTech domain experience
   

What We Offer

• Join an early-stage team where your contributions shape the product from day one
• Work across the full ML pipeline — not just one narrow piece
• The largest privately owned UAV video dataset in the world — petabyte-scale, impossible toreplicate
• Dedicated on-prem GPU resources — no cloud queues or budget negotiations for compute
• Open-source-first approach with no vendor lock-in
• Growfast in a small team with direct mentorship from the technical lead

GD Next is a European group of companies, specialising in KYC, Fraud prevention, financial messaging, and Open Banking solutions. We integrate innovative, modern technologies into the traditional financial sector to strengthen digital banking and enhance the customer experience. By combining proven, market-validated technologies with the expertise of our team and trusted partners across Europe, we deliver real and tangible value to our clients.

We are looking for a Junior Java Software Engineer to join our Open Finance project team. This is a great opportunity for aspiring developers who want to gain hands-on experience in financial technology and grow their expertise in Java development.
The role will also include participation in 24/7 project hotline support on a rotational basis for additional compensation.

Key Responsibilities:

• Develop and maintain backend services using Java and relevant frameworks.
• Assist in implementing solutions that align with OpenFinance and PSD2 standards.
• Support the integration of third-party financial institutions and payment service providers (ASPSPs).
• Work closely with senior developers and the customer project team to gather requirements, participate in design discussions, and contribute to the development process.
• Write and maintain clean, efficient, and well-documented code.
• Participate in code reviews to ensure adherence to best practices, security, and performance standards.
• Collaborate with front-end teams for seamless integration between backend and front-end components.
• Develop unit and integration tests to maintain code quality.

• Troubleshoot and debug issues in backend services.

   

Required Skills & Qualifications:

• Basic understanding of Java and hands-on experience in backend development.
• Familiarity with core Java concepts (OOP, multithreading, collections).
• Understanding of RESTful APIs and JSON.
• Knowledge of relational databases (PostgreSQL, MySQL, or similar).
• Experience using Git for version control.
• Basic understanding of web security concepts (OAuth 2.0, JWT, encryption techniques).
• Strong problem-solving skills and willingness to learn new technologies.
• Good communication and teamwork abilities.
• B2 English (Upper-intermediate or higher).

Desired Skills:

• Experience with Spring Framework (Spring Boot, Spring Security).
• Basic knowledge of cloud platforms (AWS, Azure) and containerization (Docker).
• Familiarity with CI/CD tools and deployment practices.
• Exposure to Agile methodologies (Scrum, Kanban).
• Interest in financial technology (FinTech) and willingness to learn OpenFinance and PSD2 regulations.

Additional Information:

• Candidates will have the opportunity to grow within the company and gain exposure to modern financial technologies.
• The role will include participation in 24/7 support on a rotational schedule (1 day on duty / 1 day off duty) for additional compensation.
• This is a great opportunity for junior developers to develop real-world experience in a fast-paced and innovative financial services environment.
• Location: Ukraine.
• The project language is Ukrainian.

About the role

We are looking for an Embedded Engineer to join a Miltech / Defence project focused on building next-generation radio communication systems for UAVs.

You will work alongside an experienced team of engineers developing high-performance embedded solutions from the ground up. The role involves designing real-time software, integrating it with hardware platforms, and ensuring reliable communication systems used in demanding environments.
 

Location: Lviv office
 

Responsibilities

• Design and develop software for high-performance, real-time embedded systems
• Implement new functionality and enhance existing system capabilities
• Optimize embedded solutions for efficiency, stability, and reliability
• Integrate embedded software with target hardware platforms
• Collaborate closely with hardware and software engineering teams to deliver complete system solutions
• Troubleshoot and debug complex technical issues
   

Requirements and qualifications

• Bachelor’s degree in Electronics, Computer Science, or a related field
• 5+ years of experience as an Application or Software Engineer (or similar role)
• Strong C/C++ programming skills
• Hands-on experience developing software for bare-metal environments
• Solid understanding of modern microcontroller architectures and peripherals
• Practical experience working with SPI, I2C, and UART interfaces
• Strong debugging and troubleshooting skills
• Basic knowledge of electronics and ability to read circuit schematics
• English level B1 or higher
   

Nice to have

• Experience with cryptography and cybersecurity concepts
• Knowledge of network communication protocols (TCP/IP, UDP, RTP)
• Basic understanding of RF circuit design principles
• Familiarity with ARM assembly programming
   

What we offer

• Official employment according to Ukrainian labor law
• Military service deferment
• Modern working equipment (MacBook or other preferred hardware)
• Regular performance reviews supporting professional growth
• 24 working days of paid vacation annually
• Paid sick leave
• English language classes
• Compensation for educational and training programs
• Team buildings and corporate events in a friendly and collaborative environment
   

Why join us

This role offers a unique opportunity to work in a high-tech defence environment and develop innovative embedded solutions that shape the future of UAV communication systems.
 

Interested in learning more? Apply now — we’d love to connect and discuss the next steps.

About project

The product is redefining post-acute care by replacing fragmented, manual workflows with intelligent AI-driven automation. We help healthcare providers manage patients, not paperwork, by delivering robust throughput and intelligence across clinical, financial, and compliance operations. We are built by experts from Stanford Medicine, UCLA Health, and Amazon.

The Role: 

We are looking for a product-focused Full-Stack Engineer to join our team. You will be a key player in building our system, which involves developing sophisticated APIs that interface with Electronic Medical Records (EMR) and building advanced web-scraping tools for healthcare referral platforms.

This isn't just a coding role; we are looking for an engineer who understands the "Why" behind the "What." You will work in a high-efficiency environment where AI tools (Cursor, Gemini, Claude Code) are part of the daily workflow to maximize output and quality.

Technical Stack

• Frontend: React (Proficient)
• Backend: Go (Primary/Preferred) or Node.js
• Languages: TypeScript (Strongly Preferred)
• Workflows & Scraping: Playwright, Temporal (Airflow experience is a plus)
• Data: EMR website scraping, PDF parsing, and data point extraction
• Architecture: System Design focus; Cloud-native development

What You’ll Do

• Automate Workflows: Design systems that remove data access bottlenecks and automate clinical data entry.
• Build the "Injection Track": Develop and maintain APIs that reliably scrape and sync data from EMRs and referral platforms in real-time.
• Collaborate via Design: Participate in "1s design discussions" to align on architecture before implementation.
• Leverage AI: Use modern AI-assisted development tools (Cursor, Claude Code, LLM wrappers) to build faster and smarter.
• Take Ownership: Move beyond task execution to ownership—meaning you don't just follow instructions; you understand the business context and ensure the solution fits the need.

What We’re Looking For

• 3+ years of experience: You have a solid foundation in full-stack development and have worked on product-level code.
• Communication & Alignment: You understand that "going away and building the wrong thing" is a failure. You prioritize constant "connect" and alignment with the team.
• Problem Solvers: You are comfortable with the "messy" side of data—parsing PDFs, scraping complex websites, and ensuring data reliability.
• AI-Forward: You are already using AI coding tools to 2x your productivity.

Our Culture & Philosophy

• Context is King: We provide clear business requirements and motivation. We expect you to understand the "Why" to build better "Whats."
• Execution Levels: We expect our engineers to operate at an "I do" level—owning the solution from design to deployment.
• Efficient Growth: We value unique perspectives and a proactive work ethic.

We Offer:

• 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.

ICONIC21 is looking for Junior System Administrator to support our IT systems and users in the Kyiv office and remote. The role focuses on daily operations support, system configuration, monitoring and maintenance.

Requirements

• Computer Science or Sysem Engineering education, or relevant professional experience.
• Confident use of Windows (Linux and MacOS is a plus).
• Good understanding of computer networking.
• Strong communication skills and sense of responsibility.
• Intermediate (B1/B2) english writing and speaking skills.

Responsibilities

• Basic operations with accounts, access, software and licenses.
• Installation, configuration and monitoring software on Windows, MacOS and Linux systems.
• Managing IT assets and inventory.
• Maintaining documentation for systems, processes, and troubleshooting.
• Participate in onboarding/offboarding processes using checklists.

Nice to have

• System automation experience and basic programming skills.
• Certifications in Networking or Security areas.
• Experience working with process and system monitoring, automation and scripting.
• Experience working with Microsoft 365, Intune, Power Shell.
• Proficiency with Linux systems configuration maintenance.

What we offer:

• Challenging and exciting tasks, and all the needed tools to achieve them.
• A real opportunity for professional growth in a team of professionals.
• 21 days of vacation, 5 flexible days for your needs, 15 sick leave days.
• National holidays according to the official calendar.
• Individual benefit limit to support your health and wellness needs.
• Work from office only.
• Annual bonus based on company and individual performance results.

Some roles let you pick one platform. This one lets you own them all.

Massive is a fast-growing proxy and AI data infrastructure company. Our Monetization SDK powers millions of users across desktop, mobile, and smart TV — and we're looking for a Senior SDK Engineer to own it.

This isn't a ticket-driven maintenance role. You'll make real architectural decisions, ship across four platforms, and directly impact how millions of users experience our core product. Small team, high ownership, no layers between you and the work that matters.

Responsibilities

✔ Maintain and enhance our existing SDKs across Android/FireOS (Kotlin), Tizen/WebOS (JavaScript), Windows (C++), and iOS (Swift).

✔ Develop new features and capabilities based on business requirements and partner feedback.

✔ Collaborate with backend, infrastructure, and product teams to improve SDK performance, reliability, and user experience.

✔ Research and implement optimizations to minimize resource consumption while maximizing efficiency.

✔ Design and implement robust testing strategies for multi-platform SDK releases.

✔ Create and maintain comprehensive documentation for internal teams and external partners.

✔ Investigate and resolve complex platform-specific issues across different operating systems and devices.

✔ Drive architectural decisions for SDK design patterns and cross-platform compatibility.

Requirements

✔ 4+ years of experience in software engineering with a focus on SDK or library development.

✔ Proficiency in at least one primary language: Kotlin (strongly preferred), JavaScript, or C++ — with willingness to learn others.

✔ Experience with mobile and/or TV platform development.

✔ Strong understanding of memory management, threading, and performance optimization across platforms.

✔ Experience with SDK distribution mechanisms (package managers, build systems, dependency management).

✔ Strong debugging and troubleshooting skills across multiple environments.

✔ Self-directed and comfortable working in a fast-paced startup environment.

Why join Massive?

Fully Remote

You work best when you work where you want. We support a fully remote team so you can live and work where is best for you.

Work from Home Stipend

Being a fully remote team, we want to ensure your home office is comfortable. We provide a $500 WFH stipend to get your space upgraded!

Unlimited Vacation

Take the time you need: relax, rest and recover! We want our team working at their best so take the days you need.

Health Insurance

Our team is our most valuable resource so we do our part in helping cover health insurance for all team members. We offer different benefits based on if you are located in the USA or International.

Health & Wellness Benefit

We care about your well-being. Every team member receives $50 per month toward health and wellness, whether it's for fitness, mindfulness, or self-care.

Continuous Learning

We believe in always growing. That's why we provide $50 per month toward education — online courses, books, or workshops to keep your skills sharp.

Access to Cutting-Edge Tools

As part of our mission, you'll have access to the latest AI and technology tools, helping you stay ahead and do your best work.

Ready to Apply?

Let’s connect and discuss the details!

Pine Software Technology Ltd is a software company specializing in trading technology solutions for regulated brokers and trading firms. We build SaaS products that support electronic trading, brokerage operations, risk management, and financial data analysis.
‍

We are looking for a Lead Data Engineer for the Market Data Platform.
‍

Responsibilities

• Lead the design and development of the Data Platform, focusing on data pipelines, storage, and processing layers.
• Own architectural decisions around data storage, data modeling, and data access patterns.
• Design and build scalable data pipelines for ingestion, processing, and transformation (batch and streaming).
• Develop and maintain high-performance Python-based data processing components and services.
• Work with PostgreSQL and other storage systems to ensure correct schema design, partitioning, and performance optimization.
• Design and maintain streaming data pipelines for real-time market data processing (Kafka or similar).
• Implement data orchestration workflows (Airflow, Dagster, or similar).
• Ensure data reliability and quality: validation, monitoring, observability, and alerting.
• Optimize data systems for high throughput and low latency.
• Establish and drive best practices in data engineering, code quality, testing, and CI/CD.
• Define and maintain data contracts, schemas, and governance practices across teams.
• Mentor engineers and drive the technical growth of the data engineering team.
• Collaborate with platform, backend, and product teams to align data domains and interfaces.
  ‍

Job requirements

• 6+ years of professional experience in Data Engineering (with Python) and 1+ year in a Lead role.
• Strong experience building data-intensive systems and data platforms.
• Advanced proficiency in Python as a primary language for data engineering (data processing, pipelines, internal tooling).
• Strong experience with ETL/ELT pipelines (batch and streaming).
• Experience with distributed data processing frameworks (Apache Spark, Flink, or similar).
• Experience with streaming platforms and event-driven data pipelines (Apache Kafka or similar).
• Hands-on experience with data orchestration tools (Airflow, Dagster, or similar).
•  Strong practical experience with PostgreSQL and other data storage systems: schema design, query optimization, indexing, partitioning
•  Experience working with analytical databases/data warehouses/data lakes.
•  Strong knowledge of data modeling (OLTP, OLAP, dimensional modeling, time-series).
•  Experience designing and building high-throughput data ingestion and processing systems.
•  Experience implementing data quality, validation, and observability practices.
•  Experience with containerization and deployment practices (Docker, CI/CD).
•  Strong engineering discipline: clean architecture, testing, maintainability.
•  English level: B1-B2
  ‍

Nice to Have

• ClickHouse or other analytical / time-series databases, NoSQL solutions
• Kubernetes
• Experience with lakehouse technologies (Delta Lake, Iceberg, Hudi)
• Experience with real-time analytics systems
• Domain experience in trading/market data systems
• Familiarity with event sourcing
• Patterns: CQRS, Materialized Views, Snapshotting (in data context)
• Experience with cloud services (AWS S3, IAM, etc.)
  ‍

What We Offer

• Care from Day One — medical insurance from your first day, including dental care, massage, and professional psychological support.
• Work-Life Balance — 25 days of paid vacation + 30 days of paid sick leave.
• Investment in Your Energy — partial reimbursement for sports and fitness activities.
• Growth & Learning — coverage for English or Ukrainian language courses and a dedicated professional development budget.
• Knowledge Library — office books and access to the Kuka online library.
• Island Relaxation — up to 14 days per year at the company villa in Cyprus.
  ‍

 Please note, that only shortlisted candidates will be contacted. Thank you for considering Pine as your next career move!

What we're looking for
We’re looking for a Full Stack Engineer who enjoys building real-time, interactive systems that
go beyond traditional web applications.
This is not a typical CRUD-focused role. You’ll be working on a product that combines rendering, input systems, video, and backend services into a single performance-sensitive
experience.

You should be comfortable operating in a fast-moving startup environment where requirements evolve quickly. We value engineers who take ownership, think creatively, and are comfortable
solving problems without fully defined specifications.

Who we are
we are venture-backed startup building patented technology that enables anyone to turn video into interactive games instantly, with no code.
We are creating a new category of interactive gaming content, combining real-time rendering, video, and game mechanics across mobile and web.

What you'll do You’ll work across the full stack, building both frontend interactive systems and backend
services that power them.
You’ll be responsible for optimizing the browser-side rendering and interaction layer, working with the DOM, Canvas 2D, WebGL, and browser APIs, and interfacing with our WebAssembly-based game engine.

On the backend and platform side:
● Design and build scalable Node.js services and APIs
● Model and manage data in MongoDB for real-time and user-generated content systems
● Develop systems that support gameplay state, media, and interactive features
● Ensure reliable communication between frontend systems and backend services
● Contribute to system architecture, performance optimization, and scalability decisions

On the frontend and rendering side:
● Collaborate with cross-platform engineers to integrate our WebAssembly-based game
engine into the browser environment
● Build video playback integrations that synchronize tightly with a real-time game loop
● Implement input handling systems such as touch, pointer events, and device orientation
with low-latency feedback
● Optimizing a high-performance rendering pipeline using Canvas 2D and WebGL to
achieve consistent performance and smooth frame rates on mobile browsers

Across the stack:
● Write unit, integration, and browser-based tests to ensure reliability
● Contribute to technical documentation and internal tooling
● Work closely with product, design, and engineering teams to ship features end-to-end

Core requirements
● Strong experience with Node.js, React, and MongoDB
● Solid JavaScript or TypeScript fundamentals
● Understanding of browser performance, including render loops, repaint behavior,
memory usage, and input latency

Nice to have
● Experience with Kotlin Multiplatform and WebAssembly
● Experience with Canvas 2D and WebGL in production or advanced projects
● Experience with game development or real-time interactive systems
● Experience with graphics, animation systems, or media-heavy applications
 

We’re looking for a Senior Java Engineer with Python&Golang skills to join our team. 

About Us:

Our client  is defining the future of cybersecurity through our XDR platform that automatically prevents, detects, and responds to threats in real time. Singularity XDR ingests data and leverages our patented AI models to deliver autonomous protection. With the Client, organizations gain full transparency into everything happening across the network at machine speed – to defeat every attack at every stage of the threat lifecycle.

We are a values-driven team where names are known, results are rewarded, and friendships are formed. Trust, accountability, relentlessness, ingenuity, and define the pillars of our collaborative and unified global culture. We're looking for people that will drive team success and collaboration across a team. If you’re enthusiastic about innovative approaches to problem-solving, we would love to speak with you about joining our team!

About the team & role:

Our team is responsible for the backend part for the main product line - securing tens of millions of devices across the globe of all kinds of OS (Windows, Linux, macOS), and processing billions of security events every day.

• We are building services (e.g. gateways, caching, threat data ingestion etc) that process traffic & serve for two-way interaction between client's Agents on the protected devices and our cloud-based Management console (a large-scale distributed system, with a client facing, data-heavy & complex web application)
• We also enable features in this console that allow tens of thousands of users on IT security teams of our clients to manage our security SW deployed on endpoints in client's environments (e.g. investigating threats & notifications from protected devices; creating blocklists, exclusions, policies etc.).

You'll be joining a team with a significant impact on how our customers' environments (incl. 4 or Fortune10 companies, hundreds of Global2000 or governments) are protected, how they interact with agents, gain visibility into their security posture, and understand the risks and act upon them. As a core team, we're heavily involved in every end-to-end effort, features development and are key contributors to the design and build of the right architecture of client's cybersecurity solution to match the scale & hyper-growth of our business.

What will you do?

• Design, develop and support backend system serving for endpoint security
• Help us with initiatives around moving our services to a new deployment model.
• Tuning and adjusting our services to work with new CPU architectures.
• Improving the observability for our services.

Responsibilities: 

• Cross-Team Collaboration: Work closely with product, validation, and front-end engineering teams to deliver and maintain high-quality features.
• Code Quality and Maintenance: Write clean, maintainable code. Stay up-to-date with the latest advancements in backend technologies and security best practices.
• Innovation and Creativity: Bring creativity to the table. Explore new solutions and technologies to improve our product continuously.

Requirements: 

• 7+ years of extensive software engineering experience, including proven expertise in developing large-scale distributed systems and microservices architecture, with a focus on performance, scalability and reliability
• Proficiency in Java and Python 
• Experience with Golang is a plus
• Experience with cloud platforms (AWS and/or GCP) and Kubernetes (must)
• Experience with Kafka or similar solutions is a plus
• Excellent problem-solving skills
• Strong communication skills and ability to articulate technical concepts and influence engineering direction across teams, departments and stakeholders

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers