Jobs at Djinni

We’re looking for a Senior Full-Stack Developer with 5+ years of experience to build and maintain reliable web applications across both backend and frontend.
 

You’ll work end to end - from understanding requirements and designing solutions to writing code, reviewing PRs, and supporting features in production.
 

What you’ll do

• Build and maintain web applications using Node.js and React
• Design and develop REST APIs and backend services
• Build responsive, reusable frontend components
• Work with databases and optimize queries
• Integrate third-party APIs and external services
• Write clean, maintainable, and well-tested code
• Participate in code reviews and technical discussions
• Troubleshoot production issues and improve application reliability
• Work closely with designers, QA, Product Managers, and other engineers
• Contribute to technical decisions and architecture
   

What we’re looking for

• 5+ years of professional software development experience
• Strong Node.js / TypeScript skills
• Strong React experience
• Solid understanding of REST APIs and backend architecture
• Experience with SQL and/or NoSQL databases
• Good understanding of Git, testing, CI/CD, and code review practices
• Experience working with cloud platforms such as AWS, Azure, or GCP
• Ability to work independently and take ownership
• Upper-Intermediate English or higher
   

Nice to have

• Next.js
• NestJS or Express
• PostgreSQL
• Docker / Kubernetes
• AWS services
• Microservices architecture
• GraphQL
• Terraform / Infrastructure as Code
   

🎁 What we offer

• 100% remote work
• Flexible working hours
• Competitive compensation
• Paid vacation and sick leave
• Health insurance / medical support
• Professional development and learning opportunities
• Friendly, supportive team and direct communication
• Opportunity to work on challenging international projects

We’re looking for a Senior Data Engineer with 5+ years of experience to build and support reliable data pipelines and platforms.
 

You’ll own solutions end to end - from understanding requirements and designing the architecture to building pipelines, monitoring production, and improving performance.
 

What you’ll do

• Build and maintain ETL/ELT pipelines from databases, APIs, and other sources
• Design data models, analytical tables, and warehouse structures
• Write clean Python and advanced SQL
• Work with Airflow or similar orchestration tools
• Build incremental loads, deduplication, and safe reprocessing workflows
• Set up data quality checks, monitoring, and alerts
• Improve pipeline performance and cloud costs
• Troubleshoot production issues and improve reliability
• Work closely with engineers, analysts, and business stakeholders
• Document pipelines and technical processes
   

What we’re looking for

• 5+ years in Data Engineering with production pipeline experience
• Strong Python and SQL skills
• Solid ETL/ELT, data modeling, and data warehousing experience
• Hands-on experience with Airflow or a similar tool
• Experience with AWS, Azure, or GCP
• Understanding of data quality, monitoring, testing, Git, and CI/CD
• Ability to work independently and take ownership
• Upper-Intermediate English or higher
   

Nice to have

• Spark / PySpark
• Databricks / Delta Lake / lakehouse
• Kafka, CDC, or streaming
• Terraform / Infrastructure as Code

🎁 What we offer

• 100% remote work
• Flexible working hours
• Competitive compensation
• Paid vacation and sick leave
• Health insurance / medical support
• Professional development and learning opportunities
• Friendly, supportive team and direct communication
• Opportunity to work on challenging international projects

Our Customer:

A global product company in the cybersecurity domain, focused on helping organizations identify and reduce risks across modern IT environments.

Your Tasks:

• Develop and maintain production features across the full stack, from the React UI through the API to the database.
• Design, maintain and troubleshoot Node.js and TypeScript backend services and production APIs.
• Maintain and enhance the React front end, including modern React patterns, data flow and UI performance.
• Own the data access layer in Node.js/TypeScript, keeping control over generated SQL and performance-critical behavior.
• Design and evolve database schemas, relationships, constraints and data integrity rules.
• Diagnose and optimize slow queries and production bottlenecks using execution plans and index analysis.
• Plan and execute production database migrations with backward compatibility and minimal downtime.
• Trace and resolve production incidents across the UI, API, data access layer and database.
• Interface directly with the international client and engineering team in live technical discussions.
• Deliver high-quality, resilient software updates with limited supervision.

Required Experience and Skills:

• 8+ years of professional software engineering experience, including recent hands-on full-stack work in production systems.
• Strong hands-on experience with Node.js and Node.js frameworks such as NestJS or Hapi.js.
• Expert-level knowledge of TypeScript in both backend services and data access layers.
• Strong production experience with React, including modern React patterns and state and data flow.
• Hands-on experience with state management libraries (MobX or Redux).
• Strong practical SQL skills, preferably with PostgreSQL.
• Hands-on experience with complex JOINs, aggregations and filtering on large datasets.
• Proven ability to diagnose slow queries using EXPLAIN and ANALYZE, execution plans and index effectiveness validation.
• Experience designing and maintaining data access layers with query builders or ORM tools.
• Practical experience with schema design, normalization and denormalization decisions, constraints and data integrity.
• Hands-on experience with multi-step transactional operations, rollback behavior, race conditions and transaction isolation trade-offs.
• Experience with production database migrations, schema versioning, backward-compatible changes and zero-downtime deployment approaches.
• Strong REST API experience, including over-fetching, N+1 problems, latency and efficient mapping of database data into API responses.
• Demonstrated ability to trace production issues across the UI, API, data access layer and database.
• Experience in production environments with large record volumes and high load.
• Experience working in an Agile environment, maintaining code quality through peer reviews and testing.
• Proven ability to work autonomously, clarify requirements and drive tasks to completion without continuous follow-up.
• Proven ability to take ownership of outcomes across the full stack rather than a single component.
• Proven ability to raise risks, blockers and missing information early and provide clear status updates.
• Ability to enter an existing codebase and domain, absorb context quickly and adapt to established engineering practices.
• Ability to receive direct feedback, discuss disagreements professionally and adjust quickly.
• English – Upper-Intermediate

Would Be a Plus:

• Hands-on experience with GraphQL schemas, resolvers and integration
• Experience with Next.js and server-side rendering
• Experience with stored procedures and database-side performance-critical logic
• Experience with Redis and caching strategies that reduce unnecessary database load
• Experience with AWS and cloud-based production environments
• Exposure to Docker, Kubernetes and CI/CD pipelines
• Background in cybersecurity or identity management
• Experience with large-scale identity data (Active Directory or Entra ID)
• Experience with data-intensive, analytics or enterprise high-load products

About the company
Incluence is a law firm for FinTech, Crypto, and High-Risk businesses: licensing (VASP, EMI, PSP, MiCA), company formation, banking and merchant accounts. Real clients, real licenses, real money — we don't sell vapor, we solve regulatory problems clients can't solve without us.
Marketing doesn't exist yet as a proper function. We're looking for someone who will build it from zero: get the first results done by hand, then build the team that scales brand awareness and lead flow.

What will be in your zone of responsibility

Months 1-6 (operational phase):

• Full audit of the current state — website, SEO traffic, CRM, what's already converting and what isn't — documented and presented to the CEO
• Brand awareness and positioning strategy built from scratch
• Hands-on launch of targeted advertising and first performance channels — you do it yourself first
• First thought leadership pieces and media relations
• Clean handoff of leads into the CRM with no data loss — coordination with Sales
• Getting the company visible in AI search (ChatGPT, Perplexity, and similar) for relevant queries

Months 6-12 (scaling phase):

• Hiring and developing the first marketing team (1-2 people)
• A steady pipeline of PR and content, not one-off spikes
• Representing the company at industry conferences
• Predictable lead flow with regular reporting to the CEO

How we'll measure results

• The main metric is brand awareness and the volume of qualified leads in the CRM, not publications for their own sake
• Leading indicators: brand reach and mentions, traffic from performance channels, leads per week
• Lagging indicators: growth in brand awareness/share of voice, lead-to-pipeline conversion (per Sales data), PR/thought leadership placements per quarter

What we expect

• 6-10 years in marketing, 2+ years at Head/Director level with hands-on ownership, not only team management
• Experience building marketing from scratch — no existing team, no existing brand, no historical data to work from
• Full-cycle experience: brand/PR + performance advertising + lead generation, not just one of these
• Background in B2B where the sale is built on trust and expertise (legal, consulting, compliance, fintech companies)
• Fluent English (C1+) — for negotiations with international media and partners
• Self-starter — you set your own tasks, you don't wait for micromanagement

Nice to have

• Experience in crypto, fintech, or another regulated industry
• Personal contacts in industry media
• Experience speaking at industry conferences

What we offer

• Format: full-time, fully remote
• Salary and bonus — discussed individually based on experience
• Direct access to the CEO, no corporate layers or approvals

Why we are hiring

We need a full-stack developer to build and maintain our web-based brokerage platform. The person will work across the product—from customer-facing React interfaces to backend services, integrations, and cloud infrastructure.

What the person will own

• Product development

1. Build React experiences for onboarding, account management, trading, funding, and portfolio management.
2. Develop backend services and APIs supporting the platform.
3. Integrate external brokerage, payments, KYC, authentication, and other third-party services.

• Platform and infrastructure

1. Design secure and scalable services using TypeScript, Node.js, MongoDB, and AWS.
2. Deploy and operate containerized workloads using ECS and Fargate.
3. Manage cloud infrastructure using Terraform.

4. Monitor production systems and investigate performance and reliability issues.

    

Level and experience

• 5+ years of professional full-stack development experience.
• Strong production experience with TypeScript, React, and Node.js.
• Experience building and operating customer-facing web products.

• Ability to own features from product requirements through deployment and production support.

   

Must-have skills

• Strong proficiency in React, TypeScript, and Node.js.
• Experience designing REST APIs and integrating external services.
• Production experience with MongoDB, including data modelling and query optimization.
• Understanding of authentication platforms such as Clerk, Auth0, or Cognito.
• Knowledge of OAuth 2.0, OpenID Connect, JWTs, sessions, MFA, and role-based access control.

• Experience with automated testing, CI/CD, monitoring, and incident investigation.

   

Nice-to-have skills

• Strong AWS experience, particularly ECS, Fargate, IAM, CloudWatch, and networking.
• Experience managing infrastructure with Terraform.
• Experience with brokerage, trading, fintech, payments, or KYC products.
• Familiarity with WebSockets and real-time applications.

• Experience handling financial data, audit trails, and reconciliation.

   

Tech stack

• Frontend: React, TypeScript
• Backend: Node.js, TypeScript
• Database: MongoDB
• Authentication: Clerk, OAuth 2.0, OpenID Connect
• Cloud: AWS, ECS/Fargate, IAM, CloudWatch
• Infrastructure: Terraform, Docker
• Delivery: CI/CD and automated testing

Project: Software development for a Cardiovascular Ultrasound Scanner (heart and vessels).
Team: The team is a browser-based medical imaging product aimed at bringing the capabilities of the desktop application to the web. The system enables viewing, analysis, and processing of ultrasound studies and medical data. The team consists of several C++ developers, an Angular developer, a tester, a software architect, and a Scrum master.

Technologies:
- Windows OS
- TypeScript/Angular, REST API for frontend
- WebAssembly, C++ 17+ for backend
- QT, MFC for UI
- COM, ATL for interprocess communication
- SVN, Git as source control
- Visual Studio, CMake

Requirements:
- At least 4 years of professional desktop C++ experience
- Knowledge of modern C++ standards (C++ 17, 20, 23) and syntaxis
- Deep understanding of core C++ language
- Intermediate English level (written and spoken)

Will be a big plus:
- Knowledge of QT framework
- Knowledge of medical imaging concepts (e.g., DICOM, visualization)
- WebAssembly experience
- Basic C# knowledge

Responsibilities:
- Development of a new browser-based framework for the medical product
- Porting of C++ business logic via WebAssembly (WASM)
- Participation in architecture design for a greenfield product
- Collaboration with C++ and frontend devs, domain experts, and the product team
- Mandatory participation in Scrum meetings with the team

About us
Cikumas GmbH, based in Kilchberg (Canton of Zurich, Switzerland), builds ClassOwl — an all-in-one school-management platform that replaces the patchwork of disconnected tools most schools run on today. Instead of re-entering the same student data into five or six separate systems (admissions, gradebook, invoicing, timetabling, government reporting), ClassOwl combines a Student Information System (SIS), Learning Management System (LMS) and Enterprise Resource Planning (ERP) into one white-label platform, tailored to each school's own processes and branded as their own.
 

Who We're Looking For

We are hiring a Medium-Senior Technical Writer to own documentation across ClassOwl's platform — from internal technical references used by the development team to user-facing guides for schools using SIS, LMS and ERP modules. You'll work closely with developers, QA and the business analysis team to turn product knowledge into clear, structured, and accurate documentation that both technical and non-technical audiences can rely on.
 

Responsibilities

• create and maintain technical documentation for ClassOwl's platform (API references, internal specs, release notes)
• write user-facing guides and instructions for school staff (admissions, gradebook, invoicing, timetabling modules)
• work directly with developers and QA to understand new features before they ship, and translate them into documentation
• review and structure existing documentation, identify gaps, and keep materials up to date as the product evolves
• collaborate with the business analysis team to ensure documentation reflects actual user stories and requirements
• maintain consistency in terminology, tone and formatting across all documentation
   

What we expect

• 3+ years of experience as a Technical Writer (Medium-Senior level)
• English at C1 level
• German at B2 level
• an analytical mindset — comfortable working with structured systems and translating complexity into clarity
• basic understanding of code/technical logic is enough; deep development experience is not required
• QA background is considered a relevant and welcome experience
• available to start within the next week
   

Benefits

• full-time, fully remote position
• flexible schedule
• cooperation format and compensation discussed during the interview
• budget for learning/development

RONIS is a custom software development and design company located in Ukraine.

With 20 years of experience, we provide consultancy services, strategy planning, IT landscape architecture, custom software architecture, and development, as well as integrations with existing systems.

We are now focusing on deep learning, artificial intelligence, and big data, and on their importance in e-Commerce.

Responsibilities:

- Manage software development projects from planning to delivery
- Coordinate communication between clients and development teams
- Monitor project progress, timelines, and deliverables
- Create and maintain project documentation
- Organize and facilitate team meetings
- Ensure transparent communication across all stakeholders
- Support the team in resolving blockers and operational issues
- Track project statuses and report updates to stakeholders
- Ensure product quality and timely delivery

Requirements:

- 2+ years of experience as an IT Project Manager
- Strong understanding of software development processes
- Practical experience with Agile methodologies (Scrum, Kanban)
- Experience managing web and/or mobile development projects
- Ability to coordinate cross-functional teams 
- Experience with project management tools such as Jira, Confluence, ClickUp, Trello, or similar
- Strong communication and stakeholder management skills
- Ability to manage project scope, priorities, timelines, and risks
- Experience conducting Scrum ceremonies (Daily meetings, Sprint Planning, Retrospectives, Grooming)
- Understanding of estimation, workload planning, and resource management
- Experience working with clients and handling client communication
- Ability to identify blockers and proactively resolve issues
- Strong analytical and problem-solving skills
- Upper-Intermediate English or higher (written and spoken)

Nice to Have:

- Technical background or understanding of frontend/backend architecture
- Knowledge of QA processes and testing flows
- Experience working with remote teams

We offer:

- Competitive salary based on your experience and skills
- Remote work
- Paid vacation and sick leave
- Opportunity to work on interesting international projects
- Friendly and supportive team environment
- Professional growth
- Comfortable onboarding process and team assistance
- Modern tools and well-established workflows
- Opportunity to influence processes

Mantah is hiring a SMM / Content Specialist to develop social media strategies, create engaging content, and drive brand growth across digital channels.

Responsibilities:

• Developing and executing social media strategies for different brands and projects.
• Creating monthly and weekly content plans.
• Writing social media content, captions, posts, scripts, stories, and short-form video concepts.
• Adapting content and tone of voice to different brands and target audiences.
• Generating creative content ideas, formats, recurring content series, and campaigns.
• Creating briefs for designers, video editors, photographers, and other creative team members.
• Managing social media channels and ensuring consistent publishing.
• Creating content for platforms such as Instagram, Facebook, TikTok, LinkedIn, and other relevant channels.
• Developing ideas and scripts for Reels, TikToks, Shorts, and other short-form video formats.
• Monitoring social media performance and analyzing engagement, reach, audience growth, traffic, and conversions.
• Identifying high-performing content and using insights to improve future content.
• Monitoring trends, competitors, and relevant social media formats.
• Supporting community management and brand communication.
• Participating in campaign ideation and creative brainstorming.
• Working closely with performance marketing, design, and marketing teams.

Must-haves:  

• Proven SMM experience with successful case studies for 3+ years.
• Strong portfolio with examples of social media accounts, campaigns, or content created by the candidate.
• Ability to demonstrate measurable results from previous projects.
• Strong copywriting skills.
• Ability to independently write high-quality social media content.
• Experience creating content strategies and content plans.
• Strong understanding of Instagram, Facebook, TikTok, LinkedIn, and current social media formats.
• Good understanding of Reels, Stories, TikTok, Shorts, and short-form video content.
• Ability to generate creative content ideas independently.
• Understanding of social media analytics and key performance metrics.
• Ability to adapt tone of voice for different brands and audiences.
• -Strong attention to detail and good visual awareness.
• Level of English – from Intermediate+ and above.

Nice-to-haves:

• eCommerce experience.
• Experience with UGC and influencer marketing.
• Ability to shoot or edit basic short-form video content.
• Experience with CapCut, Canva, Figma, or similar tools.
• Experience working with international brands or markets.
• Experience using AI tools for content research, ideation, and production while maintaining strong editorial quality. 

We are seeking a Firmware Engineer to contribute to the design and development of embedded firmware for our advanced DC/DC power conversion ICs.
In this role, you will create control firmware for a family of MCU-based digital power
controllers for various DC/DC power supply topologies. This will enable real-time control,
configuration, and communication with external systems through serial protocols such as
I2C, PMBus and UART.
If you have a strong foundation in embedded systems programming and are eager to learn
and grow your skills, we’d love to hear from you!

Responsibilities:
As part of this role, you will:
— Write and test embedded firmware for power IC applications using C.
— Implement real-time control and configuration firmware for embedded systems.
— Interface with serial communication protocols such as I2C, PMBus, and UART.
— FW development for peripherals such as ADC, DAC, and communication interfaces.
— Assist in debugging and validating embedded firmware with mixed-signal hardware in
a lab environment.
— Collaborate with hardware and software engineers to ensure seamless functionality.
— Create and maintain documentation, including feature descriptions, user guides, and
firmware design specifications.
— Contribute new ideas for firmware improvements and participate in code reviews to
maintain quality standards.

Qualifications:

— You are a hands-on engineer with a strong interest in embedded firmware development.
You are best equipped for this role if you have:
— BS or MS in Electrical Engineering, Computer Science, or related field.
— 4+ years of experience in embedded firmware development.
— Proficiency in C programming for embedded systems.
— Familiarity with serial communication protocols such as I2C, UART, or PMBus.
— Basic understanding of mixed-signal systems (combining analog and digital
components).
— Lab experience for debugging firmware with hardware circuits.
— Familiarity with version control systems (e.g., GIT) and debugging tools like JTAG.- Strong problem-solving skills and the ability to work in a collaborative team
environment.
— Good written and verbal communication skills in English language.

Preferred Skills (Nice to Have):
— Know-how and experience in DCDC power conversion systems.
— Experience with version control systems like GIT.
— Proficiency with JTAG debuggers and debugging firmware systems.
— Familiarity with bare-metal, RTOS environments, and device drivers.
— Programming experience with Python.
— Expertise in serial communication protocols such as I2C, PMBus, and UART.
— Experience with bug tracking systems like JIRA.

Our Customer:

Our client is a global technology company developing an advanced cloud platform for AI-powered voice communication. Their product enables organizations to build, integrate, and deploy intelligent voice services by combining modern AI technologies, large language models, and enterprise-grade communication infrastructure. The engineering team focuses on creating scalable, cloud-native SaaS solutions that process real-time interactions while maintaining high performance, reliability, and security.

Your tasks:

• Design and develop new product features across both backend and frontend components.
• Build scalable backend services using modern .NET technologies.
• Develop responsive Single Page Applications using the latest React ecosystem.
• Design and integrate REST and GraphQL APIs.
• Work with relational and NoSQL databases while ensuring data consistency and performance.
• Participate in designing microservices-based architecture and distributed systems.
• Collaborate with product managers, architects, and other engineers throughout the entire development lifecycle.
• Leverage AI-assisted development tools (such as Claude, GitHub Copilot, etc.) to improve productivity while maintaining full
• ownership and understanding of the implementation.
• Write clean, maintainable, and well-tested code following modern engineering best practices.
• Contribute to architecture discussions, code reviews, and continuous product improvements.

Required experience and skills:

• 3+ years of commercial experience in Full Stack development.
• Strong experience with modern C#, .NET Core, and ASP.NET Core.
• Solid hands-on experience with the latest versions of React, including Functional Components, Hooks, and modern state management.
• Experience building Single Page Applications (SPA).
• Strong knowledge of Entity Framework.
• Experience designing and developing microservices-based applications.
• Practical experience with REST APIs and GraphQL.
• Experience with SQL and NoSQL databases (SQL Server, PostgreSQL, MongoDB, or similar).
• Good understanding of asynchronous programming, distributed systems, and cloud-native application development.
• Experience using AI-assisted development tools (Claude, GitHub Copilot, or similar) as part of the software development workflow.
• Ability to explain architectural decisions, coding approaches, and engineering best practices independently, without relying solely on AI-generated code.
• Strong analytical thinking, problem-solving skills, and ownership mindset.
• Experience working in Agile development environments.
• Upper-Intermediate (B2) or higher level of English.

Would be a plus:

• Experience with Docker and CI/CD pipelines.
• Experience with Azure and Azure Kubernetes Service (AKS).
• Knowledge of cloud-native SaaS architecture.
• Experience with high-load or real-time communication systems.
• Familiarity with modern software architecture patterns and system design.
• Experience participating in technical design discussions and architectural decision-making.

Our Customer:

Our customer is an international technology company developing a modern cloud-based SaaS platform used by businesses to automate and optimize their daily operations. The product serves enterprise customers and is built with scalability, reliability, and long-term maintainability in mind. The engineering team follows modern development practices, values clean architecture, and actively collaborates across product, design, and QA to deliver high-quality software.

Your Tasks:

• Design, develop, and maintain scalable full-stack web applications using .NET and React.
• Build reusable, maintainable, and high-quality backend and frontend components.
• Design and implement RESTful APIs and integrate backend services.
• Collaborate with Product Managers, UX/UI Designers, QA Engineers, and other developers throughout the development lifecycle.
• Participate in architecture discussions and contribute to technical decisions.
• Optimize application performance, scalability, reliability, and security.
• Troubleshoot and resolve issues across both frontend and backend systems.
• Work with Docker, CI/CD pipelines, deployment configurations, and monitoring tools to support reliable software delivery.
• Perform code reviews and share technical knowledge within the team.
• Follow Agile methodologies and software engineering best practices.

Required Experience and Skills:

• 5+ years of commercial experience in full-stack software development.
• Strong hands-on experience with .NET / C#.
• Strong experience with React and modern JavaScript/TypeScript.
• Experience designing and consuming RESTful APIs.
• Solid knowledge of SQL databases.
• Experience working with Docker, deployment pipelines, and monitoring tools.
• Experience with Git and modern CI/CD workflows.
• Strong understanding of object-oriented programming, software architecture, and design patterns.
• Experience working for a large, globally recognized product or technology company.
• Excellent analytical and problem-solving skills.
• Ability to work independently and effectively in a cross-functional Agile team.
• Upper-Intermediate English or higher.

Would Be a Plus:

• Experience with cloud platforms (AWS, Azure, or GCP).
• Experience with microservices architecture.
• Knowledge of Kubernetes or container orchestration.
• Experience with automated testing and TDD.
• Previous mentoring or technical leadership experience.

Our Customer:

Our customer develops specialized software products for professional business workflows. The engineering team works on established production applications and is looking for a full-stack engineer who can contribute across both frontend and backend development.

Your Tasks:

• Develop and maintain full-stack applications across React/TypeScript frontend and C# backend.
• Work on medium and large-scale production applications throughout the development lifecycle.
• Develop and maintain frontend functionality using React, including both Hooks and class-based components.
• Build and maintain backend functionality using ASP.NET MVC and Web API on the classic .NET Framework.
• Investigate, debug, trace, and resolve complex frontend and server-side issues.
• Apply software engineering principles, design patterns, and clean development practices.
• Quickly learn and adopt new technologies when required.
• Work independently while contributing across the full technology stack.

Required Experience and Skills:

• 3+ years of experience working with medium or large-scale React applications.
• 2+ years of experience working with medium or large ASP.NET MVC or Web API applications.
• Strong knowledge of React Hooks and classic class-based components.
• Strong TypeScript skills.
• Good understanding of core web technologies, including JavaScript, XHTML, and CSS.
• Production experience with Redux, Redux Saga, and Immutable.js.
• Strong frontend debugging and problem analysis skills.
• Hands-on experience with the classic .NET Framework; working experience with .NET Core is not required, but solid knowledge of .NET Core is required.
• Strong knowledge of C#, OOP, SOLID principles, design patterns, reflection, and algorithms.
• Strong understanding of XML and JSON serialization.
• Ability to debug, trace, and resolve complex server-side issues.
• Strong ability to learn new technologies quickly and work independently.
• University degree in Computer Science or a related field, or equivalent industry experience.
• Excellent English.

Would Be a Plus:

• Experience with AWS services such as SQS, EKS, and Fargate.
• Experience with cloud-oriented systems.
• Experience with Kubernetes.
• Experience with Node.js.
• Knowledge of nw.js or similar technologies.

We’re a fast-growing licensed online casino targeting Tier 1 and Tier 3 (LatAm) markets. We’re looking for a Facebook and/or In-App Media Buyer who can start campaigns from zero and scale them profitably.

Key Responsibilities:

• Launch and scale high-performance advertising campaigns across Facebook and/or In-App networks (Unity, AppLovin, Ironsource, etc.).
• Oversee full-cycle integrations between mobile applications, attribution platforms (AppsFlyer, Adjust), and trackers (Binom, Keitaro) to ensure flawless data flow.
• Conduct deep-dive analysis of active campaigns, optimizing for key performance indicators (ROI, CPA, LTV) to maximize profitability.
• Develop detailed briefs for the design team and motion designers; constantly test new creative angles and landing pages.
• Monitor daily expenditures and performance metrics, providing detailed daily reports to ensure budget efficiency and target alignment.
   

Requirements:

• At least 2+ years of hands-on experience in Media Buying, with a track record of managing high-volume traffic.
• Deep knowledge of the Gambling/iGaming vertical is mandatory.
• Strong experience in launching and scaling campaigns specifically for the Tier-1 market.
• Experience managing significant monthly budgets of $50,000+ with proven ROI.
• Solid experience working within professional arbitrage teams or media buying agencies.
• Expert knowledge of launching and optimizing campaigns for both iOS and Android platforms.
• A thorough understanding of the casino economy, including player lifecycle, conversion funnels, and retention metrics.
• English at a B2 (Upper-Intermediate) level or higher is required. 

Description

Our client is looking for a hands-on Principal Data Engineer & Architect to lead the design, evolution, and execution of their core data engineering ecosystem. This role is built specifically for an elite technical leader who loves mapping out highly reliable distributed architectures but is driven by a strong desire to stay close to the metal—allocating approximately 70% of their time to writing mission-critical production code, core data libraries, and internal frameworks, and 30% to high-level architectural design, data infrastructure governance, and technical mentorship.
 

About Our Client

Our client is a venture-backed, AI-powered platform built specifically for consumer brands. It connects seamlessly to fragmented external sources like banks, POS systems, and advertising platforms to deliver daily profit & loss snapshots, cash flow plans, and peer benchmarking—all in real time. With integrations stretching across finance, e-commerce, and marketing tools, the platform provides the clarity and automation brands need to grow confidently.
 

What You’ll Do

Architect Data Infrastructure (70% Focus): Maintain a heavy, hands-on presence in the codebase. Author core data processing libraries, distributed computing frameworks, and high-scale data platforms in JavaScript (Node.js/NestJS) and Python to establish gold standards for the engineering team.

Design Data Systems (30% Focus): Design and evolve a robust, multi-tenant data architecture capable of handling massive datasets and high-throughput processing across hundreds of distinct data domains concurrently.

Data Quality & Governance: Establish bulletproof data integrity and observability patterns. Focus on robust processing workflows, comprehensive data validation, automated quality checks, and end-to-end distributed tracing across the data lifecycle.

Scale Data Pipelines: Define and enforce efficient data architectures, high-throughput streaming patterns, and transaction boundaries to guarantee accurate real-time financial reporting at scale.

Technical Leadership & Mentorship: Act as an elite technical sounding board for the engineering organization. Conduct comprehensive architecture reviews, upskill senior engineers, and champion modern DevOps, testing, and deployment workflows.
 

What We’re Looking For

Deep Industry Experience: 8+ years of professional software engineering experience, with a proven history of designing, deploying, and maintaining large-scale data processing and distributed data infrastructure solutions.

Polyglot Mastery in Data Engineering: Highly proficient in both JavaScript/TypeScript (Node.js, NestJS) and Python, with the ability to build sophisticated data pipelines and distributed systems using each language’s native strengths.

Advanced Data Engineering & Architecture Expertise: Extensively experienced with distributed systems, high-scale storage solutions, query optimization, and complex data architecture patterns for massive, high-velocity datasets.

Data Modeling & Schema Excellence: Expert-level understanding of relational (SQL) and non-relational (NoSQL) databases, schema design, complex data validation, mapping workflows, and ETL pipeline design.

True Builder Mentality: A strong architectural thinker who actively rejects the “ivory-tower” approach and remains deeply passionate about shipping high-quality production code every single week.
 

Would Be a Plus

Direct technical experience within FinTech, e-commerce SaaS platforms, or real-time data streaming architectures (e.g., Kafka, RabbitMQ).

Familiarity with financial data aggregates or banking networks (e.g., Plaid, Yodlee, Stripe).

Experience setting up data ingestion pipelines optimized for downstream AI/LLM analysis models.
 

What We Offer

Highly competitive principal-level base salary + substantial early-stage equity package.

Comprehensive medical, dental, and vision insurance coverage.

Flexible, remote-first working culture with an elite engineering group.

Direct technical influence over the foundational platform architecture of a fast-growing, venture-backed startup.