Jobs at Djinni

We are creating the future of software development: a system that generates and executes applications from natural language in real-time.
 

Backed by a team of ex-FAANG engineers, we are moving fast. Our MVP is nearly ready, and we need a Senior Node.js Engineer to speed up and cross the finish line and scale.
 

The Mission We need clean, rapid execution. We're build ingthe engine that powers real-time AI generation.
 

The Tech Stack & Challenge

• Core: Node.js + TypeScript (Production grade).
• Streaming: Building robust streaming APIs (handling real-time token generation).
• Resilience: Managing concurrency, client disconnects, and heavy background workflows (analytics/billing).
• Database: PostgreSQL.
   

Who You Are

• You have deep experience with Async/Streaming systems (Web Streams API is a plus).
• You understand the difference between a request lifecycle and a background process.
• You write code that handles memory leaks and abort signals gracefully.
• You are a "doer", you want to translate diagrams into working code, fast.
   

If you are a senior dev who loves correctness, performance, and shipping fast, you’ll feel at home here.
 

Interested? Please send a short note with:

1. Your experience with Node.js streaming.
2. An example of how you’ve handled complex concurrency or background jobs.

Format: Full-time
Compensation: Fixed salary + %
Work format: Remote

Responsibilities:

• Working with the automated lead generation system Convertix.io (must-have)
• Adjusting and fine-tuning job application criteria (niche, budget, keywords, filters)
• Handling incoming responses from clients
• Communicating with clients and guiding them to:
  • a call, or
  • a direct deal
• Client handover after agreements are reached

Requirements:

• Mandatory experience with Convertix.io
• Hands-on experience with Upwork (practical, not theoretical)
• Understanding of the funnel: proposal → reply → call → deal
• Confident written English (B2+)
• Ability to lead clients to a decision, not just reply to messages

📩 How to apply

In your application, please include:

1. Your experience with Convertix.io (what exactly you configured)
2. Your experience with Upwork

3. Your average reply / interview rate

Format: Full-time
Compensation: Fixed salary + % per closed deal
Work format: Remote

Responsibilities:

• Working with the automated lead generation system Convertix.io (must-have)
• Monitoring and fine-tuning lead generation criteria (niche, budget, keywords, filters)
• Leading sales conversations with clients (chat-first)
• Qualifying leads and identifying real buying intent
• Negotiating pricing, scope, and timelines

Requirements:

• Proven experience with Convertix.io
• Strong hands-on experience with Upwork sales (not theory)
• Clear understanding of the sales funnel: proposal → reply → negotiation → deal
• Confident written English (B2+ / C1 preferred)
• Strong negotiation and closing skills
• Ability to push deals forward and drive clients to a decision

How to apply:

In your application, please include:

1. Your experience with Convertix.io (what you managed or configured)

2. Your Upwork sales experience

3. Your average reply rate / close rate

Overview:
We are looking for a Senior Backend Engineer to lead the development of core backend services within a modern microservice infrastructure that powers mobile and embedded clients. This is a senior, hands-on role with architectural ownership, ideal for an engineer who enjoys building scalable distributed systems, designing secure and reliable APIs, and mentoring other developers. You will drive technical decisions and collaborate closely with architects, frontend engineers, and product teams to deliver future-proof backend solutions.

Responsibilities:

• Lead the design and development of backend services using Java in a Docker/Kubernetes-based environment;
• Drive architectural improvements and establish backend best practices across the platform;
• Design, implement, and optimize event-driven systems based on Kafka;
• Build secure, scalable RESTful APIs for internal and external consumers;
• Design and query complex data models using PostgreSQL, with strong focus on performance and reliability;
• Collaborate closely with frontend and product teams to deliver features end-to-end, from concept to production;
• Ensure system reliability and observability through logging, tracing, and monitoring;
• Enable integrations with data pipelines and ML-powered services as part of data-driven and AI initiatives;
• Mentor junior engineers, conduct code reviews, and support team-wide technical growth.

Requirements:

• 5+ years of professional experience in backend development within microservice and cloud-native environments;
• Strong production experience with Java (e.g., Spring Boot or similar frameworks);
• Python experience is a plus, especially for data pipelines, ML integration, or scripting tasks;
• Deep understanding of:
  • Kafka and event-driven architectures;
  • PostgreSQL, including advanced schema design and query optimization;
  • Secure API design and implementation (OAuth2, HTTPS, mTLS).
• Hands-on experience with Docker, Kubernetes, and CI/CD pipelines in production;
• Proven ability to lead cross-functional technical initiatives and make architectural decisions;
• Demonstrated experience mentoring or guiding less experienced engineers;
• Exposure to video streaming backends or media platforms is a plus;
• Strong interest or background in ML- or data-driven applications;
• Bonus: Experience with observability stacks (e.g., Prometheus, Grafana) or real-time analytics systems.

S-PRO, a top-tier Digital Innovation and Software Engineering company. We specialize in providing cutting-edge services for fast-growing businesses and enterprises, with a strong focus on Finance, Renewable Energy and Healthcare domains and expertise in AI, Blockchain and Data Science. Our team of over 200 dedicated professionals works tirelessly across our global offices to develop innovative digital solutions that drive sustainable business value and increase our client’s competitiveness in a dynamic digital landscape.

Project description: The product is one of the first licensed digital asset banks powered by Blockchain. Our team is covering the delivery part of one of the core company’s services. It allows in a very simplified manner, process of capital raising for companies and investors providing the creation of new assets, manage offerings, buy, trade and earn crypto to future-proof your investment strategy.

 

Responsibilities:

• Collaborate with the team to build a mobile application 
• Write a new mobile app using React Native and Expo, ensuring smooth performance and maintainable architecture
• Improve and extend the app’s functionality, including optimization of payment processing
• Ensure high-quality, pixel-perfect UI implementation based on provided designs
• Participate in planning, discovery, and implementation of new features
• Take ownership of feature development end-to-end, including testing and documentation

Requirements:

• 5+ years of hands-on experience with React Native and TypeScript;
• Familiarity with modern React patterns and state management (e.g., Zustand or Jotai Toolkit);
• Experience with React Query (or similar server-state libraries);
• Experience with React Navigation or Expo Router;
• Experience with secure storage solutions and basic mobile security concepts;
• Familiarity with Expo modules and config plugins (optional but appreciated);
• Ability to work with native modules and basic Xcode/Android Studio configuration;
• Good understanding of testing (unit & integration) for React Native applications;
• Strong sense of ownership and high-degree of quality in delivered working results.
  
  Nice to have:
• Experience working with banking/financial applications;
• Experience with enterprise-grade CI/CD for mobile;
• Proactive communication and creative in designing new solutions.

What we offer:

• Long team focus: we create an environment of transparent communication, and minimal bureaucracy, which leads to long-term relationships.
• Development of niche expertise: we are working in several niches, such as FinTech, healthcare, and logistics. Therefore, our employees can develop their own expertise in these domains.
• Continuous learning: we create employee development plans / personal roadmaps /quick promotion processes.
• Internal career development: 80% of our current executives were promoted to those positions within S-PRO. We encourage initiative. If a person wants to set new challenges and grow, we will definitely support them.

Benefits and perks:

• Flexible schedule.
• Remote work model.
• Medical insurance
• Paid vacations
• Paid Sick-leaves.
• Paid State holidays.

We are looking for a AQA Tech Lead who is hands-on with automation and testing, while also taking responsibility for technical leadership and mentoring within the QA team. This role combines deep technical expertise with ownership of automation quality, testing frameworks, testing strategy, and people management responsibilities.
Responsibilities:

Technical Leadership & Management

• Lead and manage a team of QA professionals, providing guidance, mentorship, and support.
• Conduct regular performance evaluations, provide feedback, and identify opportunities for professional growth and development.
• Mentor QA engineers on test design, automation best practices, and framework usage.
• Support the team in technical decision-making, debugging, and problem-solving.

Quality Assurance & Testing Strategy

• Define and evolve test strategies across multiple layers: component, integration, API, and UI.
• Ensure proper test coverage for functional and non-functional requirements.
• Review and improve existing test cases and automation for maintainability and stability.
• Identify quality risks early and propose pragmatic solutions.

Test Automation & Framework Ownership

Design, implement, and maintain scalable automation frameworks.

• Drive test automation across Web, Backend, and Mobile layers.
• Reduce flakiness, improve execution speed, and optimize CI/CD integration.
• Own automation standards, structure, and long-term sustainability.
• Strong understanding of test pyramid and framework layering.

Hands-On Test Execution

• Participate in complex feature testing, integrations, and critical releases.
• Lead full or targeted regressions for major technical changes.
• Analyze test results, identify root causes, and collaborate with developers on fixes.
• Validate production-critical flows and high-risk changes.

Stakeholder Collaboration

• Collaborate with Engineering, Product, and DevOps on quality expectations and delivery.
• Provide technical QA input during planning, grooming, and release discussions.
• Communicate testing risks, tradeoffs, and recommendations clearly and constructively.

Requirements: 

• Strong hands-on experience in QA Automation with an automation-first mindset.
• Proven ability to act as a QA Tech Lead, owning automation quality, technical decisions, and mentoring.
• Deep understanding of test strategy, risk-based testing, and quality trade-offs.
• Practical experience using AI tools to speed up test case creation, automation development, and test data generation.
• Ability to integrate AI-assisted workflows while maintaining high-quality standards.
• Strong ownership mindset with end-to-end responsibility.
• Excellent communication skills and ability to influence engineering decisions.
• At least Upper-Intermediate English.

Technical Skills:

Web Automation:

• Playwright, JavaScript / TypeScript
• Strong understanding of modern frontend architectures and browser automation

Backend / API Testing:

• Kotlin, JUnit 5, Gradle, MySQL, BigQuery
• Strong experience with API, integration, and data-driven testing

Mobile Automation (Will be a plus)

• Kotlin / Swift
• Deep understanding of Android and iOS testing layers and tooling

Infrastructure & Tooling

• Docker and Kubernetes
• CI/CD pipelines and test execution optimization

AI-Driven QA & Automation (Strong Plus)

• Practical experience using AI tools to accelerate QA activities
• Ability to integrate AI-assisted workflows into daily QA activities while maintaining high quality and correctness.

Nice to Have

• Experience scaling automation in large or distributed systems.
• ISTQB or similar certifications.
• Experience working closely with DevOps and platform teams.

Location: Remote
Client: USA (Texas)
Domain: AI-driven SaaS for Healthcare & Life Sciences
Industry: Healthcare, Pharmaceuticals, Compliance Automation
 

About the project

We are building an AI-driven SaaS platform that automates regulatory compliance and software revisions for highly regulated industries such as healthcare, life sciences, and pharmaceuticals.

The product helps companies stay compliant with industry regulations by combining AI automation, backend services, and modern web interfaces. You will work on real production features with a strong focus on reliability, performance, and clean architecture.
 

Role overview

We are looking for a Full Stack Software Engineer with 5 years of commercial experience to join the team and work across backend and frontend parts of the platform.

You will design and develop scalable web applications, build robust APIs, and create intuitive user interfaces while collaborating closely with product managers, designers, and other engineers.

A strong Python background is essential, especially for building APIs with FastAPI. Solid experience with React and modern JavaScript/TypeScript is also required.
 

Responsibilities

• Design, develop, and maintain web applications using Python, Node.js, React, and TypeScript
• Build and maintain RESTful APIs using FastAPI, ensuring scalability, security, and performance
• Develop responsive and user-friendly interfaces with React
• Collaborate closely with backend and frontend engineers to deliver cohesive solutions
• Implement best practices such as code reviews, automated testing, and CI/CD
• Troubleshoot, debug, and optimize application performance and reliability
• Contribute to architectural decisions and the evolution of the technology stack
• Work with product managers and designers to deliver high-quality features
   

Requirements

• 3–5 years of hands-on commercial experience with Python, Node.js, and React
• Strong experience building APIs with FastAPI (or similar Python frameworks)
• Proficiency in JavaScript / TypeScript and object-oriented programming
• Experience with RESTful API design and third-party service integrations
• Familiarity with Git, npm, and modern development workflows
• Strong problem-solving skills and attention to detail
• Good communication skills and ability to work in a team
   

Nice to have

• Experience with cloud platforms (AWS preferred, Azure or GCP are also fine)
• Experience with databases: PostgreSQL (preferred), MongoDB, or MySQL
• Understanding of automated testing (Playwright, Selenium) and TDD
• Experience with Docker and containerized environments
   

What we offer

• Fully remote collaboration
• Work with a US-based client on a meaningful healthcare-focused product
• Opportunity to work on AI-driven SaaS in a regulated industry
• Stable project with real production impact
• Professional, engineering-driven team and clear technical goals

We’re looking for Community & Event Manager who loves building meaningful communities and connecting people through impactful events!

    We offer:

• Flexible working hours;
• Paid vacation and sick days;
• Health insurance;
• Professional growth;
• Internal English classes and compensation for educational courses;

• Professional accountant and lawyer.

   

  Requirements:

• Proven experience in organizing and executing events, community activations, or conference presence;
• Commercial experience in communications, PR, or related fields;
• Experience working with social media platforms: Facebook, Instagram, LinkedIn;
• Experience managing professional communities;
• English: Upper-Intermediate (B2) level or higher;

• Strong organizational skills and the ability to manage multiple tasks and meet deadlines.

  Nice to have:

• Experience in HealthTech, IT, or startup environments;
• Experience with international communication and stakeholders.
  
  Responsibilities:
• End-to-end organization of Health2Tech events, including venue sourcing and coordination with vendors, partners, and stakeholders;
• Creating and maintaining event pages, managing registrations, and communicating with participants (LinkedIn invites, groups, and communities);
• Sourcing and supporting speakers;
• Managing event-related and community content: posts, presentations, interviews, and newsletters;
• Moderating internal community channels and maintaining engagement;
• Collecting, analyzing, and summarizing feedback from events and community members to improve future initiatives.

We are looking for a Senior DevOps Engineer to own the infrastructure for our new Medallion Lakehouse and AI-powered applications. You will not be maintaining legacy on-prem servers; you will be building the cloud-native foundation that drives our growth.

Tech Stack

• Cloud: Azure PaaS (AKS, Container Apps, Functions, Key Vault, ADLS Gen2, Azure SQL).

• IaC: Terraform (Module design, state management).

• CI/CD: GitHub Actions (Automated pipelines, quality gates).

• Orchestration: Kubernetes (AKS), Docker.

• Observability: Prometheus, Grafana, Azure Monitor.

• Scripting: Python, Bash.
 

Responsibilities

• Infrastructure as Code: Design and maintain scalable Azure infrastructure using Terraform. Implement module-based architectures for our Data Lakehouse (Bronze/Silver/Gold layers) and AI microservices.

• CI/CD Mastery: Build bulletproof GitHub Actions pipelines for Python applications and data workflows. Implement automated testing, security scanning, and seamless deployment strategies.

• Reliability & Observability: Implement monitoring dashboards (Grafana/Azure Monitor) and alerting strategies. Define and track SLIs/SLOs to distinguish between application and infrastructure noise.

• Security & Compliance: Enforce "Zero Trust" and "Least Privilege" principles. Manage identity (Azure AD/Entra ID), secrets (Key Vault), and network security (VNet, Private Endpoints).

• Disaster Recovery: Design and test backup/recovery strategies for databases and data lakes to ensure business continuity.

• Collaboration: Act as a bridge between Data Engineering and Backend teams, helping optimize Docker containers and troubleshoot production issues.
 

Requirements

• 5+ years of DevOps/Platform Engineering experience.

• Deep expertise in Azure ecosystems (proven track record of delivering Azure-based systems).

• Strong proficiency with Terraform in a production environment.

• Experience managing Kubernetes (AKS) and containerized workloads.

• Solid understanding of networking (VNets, DNS, Firewalls) and security (RBAC, IAM).

• English B2 – We communicate daily with the US team.
 

Nice to Have

• Experience supporting Data Engineering teams (Data Factory, Databricks, Spark).

• Background in Python development or complex scripting.

• Experience with GitOps workflows (ArgoCD).
 

What We Offer

• Greenfield Project: No legacy code or technical debt. You choose the right tools for the job.

• High Autonomy: You are the infrastructure owner. Your architecture decisions matter.

• Remote-First: Flexible schedule

• Stability: Long-term role with a stable US company

• Direct Impact: Your work directly powers AI models predicting roof damage and optimizing multimillion-dollar construction projects.

 

About the Project

TeamCraft is a large U.S. commercial roofing company undergoing an ambitious AI transformation. We’re building a centralized data platform from scratch - a unified Azure Lakehouse that integrates multiple operational systems into a single source of truth.
 

This is greenfield development with real business outcomes - not legacy maintenance.

     We are a fast-growing product-based company currently scaling our business.
     We work with our own product  — this is not an affiliate network.

     We are looking for an Affiliate Manager who can not only manage partnerships but also deeply understands the technical side of affiliate integrations and launches.
 

🔹 Responsibilities:

• Find, onboard, and develop affiliate partners
• Handle technical partner integrations:
  postbacks, tracking, links, testing, and data validation
• Work closely with tech, analytics, product, and CRM teams
• Monitor traffic quality, conversion rates, and KPIs
• Optimize partner performance and scale effective traffic sources
• Analyze results and contribute to the affiliate growth strategy
   

🔹 Requirements:

• Proven experience as an Affiliate Manager in iGaming / betting / digital / crypto / product-based projects
• Strong technical skills are mandatory:
  • understanding tracking systems and postback logic
  • ability to independently launch and test partner integrations
• Experience with analytics and performance metrics (CR, ROI, LTV, payback, etc.)
• Self-driven, responsible, and results-oriented mindset
• Ability to build long-term partnerships
• English — working proficiency (Spanish is a strong plus)
   

🔹 What we offer:

• Work in a product company, not an affiliate network
• Competitive salary + performance-based bonuses
• Real influence on processes and strategic decisions
• Fast decision-making with minimal bureaucracy
• Professional team and comfortable work environment
• Growth opportunities together with the product
   

🔹 Work format:

• Remote
• Full-time
• Flexible and results-focused environment

Remote | Full-time 

Own growth for subscription mobile apps from first tests to scale.
You are responsible for turning traffic, funnels, and creatives into revenue and for making clear decisions on what to test, scale, or stop across W2W and W2A funnels.

Responsibilities:

• Own one or more app growth streams (W2W / W2A) from strategy to results
• Design and run go-to-market: ICPs, offers, messaging, funnels, paywalls, onboarding
• Partner with UA on media plans, testing roadmap, and targets (CAC, ROAS, LTV, payback)
• Drive creative strategy with Creative team: angles, concepts, scripts
• Work with Product, Tech, and Data on tracking, dashboards, and automation

• Turn data into clear priorities: scale / kill / test next

   

Main responsibilities:

• Take ownership of one core app / funnel / region
• Launch and review multiple creative + funnel experiments
• Hit agreed ROI and revenue targets

• Improve speed and clarity of the growth feedback loop

   

Requirements:

• 3+ years in performance marketing or growth for mobile apps / subscriptions
• Strong in funnels and creative strategy (web and/or app)
• Confident with metrics: CAC, ROAS, LTV, cohorts
• Comfortable in fast-paced, test-heavy environments
• Strong cross-functional communication skills
• English: B2+

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

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

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

   

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

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

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

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

Requirements:

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

Responsibilities:

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

We Offer:

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

An international product-driven company operating in the performance marketing and B2B partnerships space. The core focus is on traffic acquisition and monetization through CPA-based models, working closely with providers and scaling across multiple international markets. The company develops its own products, builds long-term partnerships, and prioritizes revenue growth and profitability.

Responsibilities:
- Conducting and controlling daily financial transactions: payments to suppliers, partners, freelancers, and employees;

- Managing payment systems, banks, e-wallets, and corporate cards;

- Consolidation and control of expenses by projects and departments;

- Monitoring compliance with limits and budgets;

- Preparing weekly and monthly reports on expenses, income, profit, and liabilities;

- Working with internal spreadsheets and BI systems to automate reporting;

- Maintaining registers of contracts, payments, statements, and invoices;

- Reconciling data with accounting, the bank, and partners;

- Monitoring budget execution and forecasting cash gaps;

- Participating in budget planning and fund allocation;

- Optimizing payment processes and searching for more favorable conditions;

- Analyzing the financial efficiency of campaigns and projects.

Requirements:
- At least 2 years of experience with financial operations, accounting, or payments;

- Understanding of the fundamentals of financial management, budgeting, and reporting;

- Advanced knowledge of Excel / Google Sheets and experience working with CRM / ERP / BI systems;

- Attention to detail, strong organizational skills, and responsibility;

- Ability to work in a multitasking environment and meet deadlines;

- Will be a plus: Experience in IT, Digital, Affiliate Marketing, or traffic arbitrage;

- Will be a plus: Knowledge of tax legislation in Ukraine / the EU / Poland.

An international product-driven company operating in the performance marketing and B2B partnerships space. The core focus is on traffic acquisition and monetization through CPA-based models, working closely with providers and scaling across multiple international markets. The company develops its own products, builds long-term partnerships, and prioritizes revenue growth and profitability.

Responsibilities:

- Communication and collaboration with account providers (Facebook, Google);

- Acquisition of necessary resources at the request of media buyers;

- Maintaining financial records and reporting;

- Recording all purchases and expenses;

- Interaction with the financial manager for report reconciliation;

- Participation in building and improving the financial accounting system;

- Completing daily and monthly reports;

- Supporting the buying team and assisting in resolving operational issues;

- Participating in process optimization — searching for ways to speed up and simplify tasks;

- Adjusting processes and spreadsheets when errors occur or data is missing.

Requirements:
- System thinking — ability to maintain order in numbers and documents;

- Attention to detail — ability to spot errors and discrepancies before they become a problem;

- Reliability and confidentiality — working with sensitive data;

- Experience in traffic arbitrage, affiliate marketing, or financial management;

- Confident use of Google Sheets / Excel, ability to structure and visualize data;

- Understanding of basic arbitrage metrics (spend, profit, ROI, hold, payout);

- Accuracy, punctuality, and ability to work under deadlines;

- Responsibility and readiness to keep the financial system in perfect order;

- Experience with cryptocurrency transactions and multi-currency systems.

We’re hiring a Senior React Native Developer to help us build and scale a subscription-based mobile app.

This role is for a strong senior IC who owns complex features end-to-end, writes high-quality code, improves architecture, and thinks systematically. We value people who think through problems before implementation and communicate clearly.

Tech Stack

• React Native
• Expo (bare workflow)
• TypeScript (strict, production-grade)
• RevenueCat (subscriptions & entitlements)
• Superwall (paywalls & experimentation)

• iOS & Android (App Store & Google Play)

   

Responsibilities

• Own complex features from problem definition to production release.
• Write high-quality, maintainable React Native code.
• Improve existing architecture and reduce tech debt without slowing product velocity.
• Review PRs with a focus on correctness, readability, and long-term maintainability.
• Collaborate closely with product and design to turn goals into clear technical plans.

• Take senior-level ownership: identify risks early, think through solutions, and ship reliably.

   

What We’re Looking For

• Strong experience shipping production React Native apps.
• Hands-on experience with subscription-based products, including:
  • Paywalls and onboarding → subscription flows
  • Entitlements and access control
  • Handling edge cases (upgrades, downgrades, refunds, restore purchases)
• Experience with RevenueCat and/or Superwall.
• Excellent written and verbal communication.
• Systematic, linear thinker who plans before coding.
• Comfortable working independently and making sound technical decisions.

Nice to Have

• Experience using AI tools or APIs to automate workflows, improve developer productivity, or enhance user experience.
• Experience with mobile analytics, experimentation, or A/B testing.
• Familiarity with performance optimization and debugging on mobile.
• Startup or product-driven team experience.

How We Work

• We prioritize clarity, thoughtful planning, and high-quality execution.
• We favor systematic thinking over rigid methodology.
• Decisions are documented and tradeoffs are explicit.

What Success Looks Like

• Subscription flows are reliable, measurable, and optimized.
• Complex features ship with confidence and minimal regressions.
• Architecture steadily improves, making the codebase easier to extend.
• Engineering work stays aligned with product goals.