Jobs at Djinni

   We are looking for a Content Marketing Manager to join our team and take ownership of key content and marketing initiatives across multiple channels. This role combines content strategy, personal brand development, and marketing project coordination.

   You will work closely with the marketing team, leadership, and CX experts, contributing to both execution and planning of content-driven initiatives.

Key Responsibilities:

• Plan and execute content initiatives aligned with overall marketing strategy;
• Manage and develop personal brands of key team members on LinkedIn;
• Create and oversee content production across different formats (posts, videos, etc.);
• Coordinate content workflows with internal team members and external contributors;
• Support outreach and communication with target audiences and industry experts;
• Contribute to company presence across external platforms and directories;
• Participate in preparation of marketing initiatives such as events, awards, and campaigns;

• Track content performance and provide insights for improvement.

   

What We’re Looking For:

• Experience in content marketing, SMM, or a similar role;
• Strong experience with LinkedIn as a marketing and communication channel;
• Ability to create clear, engaging B2B content in English;
• Structured and proactive approach to managing multiple initiatives;
• Experience working in a team and coordinating cross-functional tasks;
• Background in B2B, IT outsourcing is a plus.

Main requirements

Necessary to have experience with GIS.
We are seeking an experienced backend developer to build and maintain the API and backend infrastructure for our web portal and mobile application. You'll be working with modern technologies including Rust, PostgreSQL/PostGIS, and cloud-native deployments on Kubernetes

Requirements

Position name: Senior Backend Developer - Rust & Geospatial Systems
Level: Senior (only)
Hard skills requirements (including years):

• 6+ years of Software Engineering experience.
• Strong proficiency in Rust, or willingness to learn with solid C/C++ background.
• Strong experience with backend development using Rust and frameworks like Actix Web or similar.
• Expert-level experience with PostgreSQL, including schema design, stored procedures, query optimization, and performance tuning.
• Experience working with PostGIS or geospatial data (spatial analysis, coordinate systems) is a plus.
• Experience with cloud platforms such as Open Telekom Cloud, AWS, GCP, or similar.
• Strong experience with Kubernetes for container orchestration, deployment management, scaling, and troubleshooting.
• Hands-on experience with Helm for managing Kubernetes deployments.
• Experience with Docker and containerization best practices.
• Strong understanding of RESTful API design principles.
• Experience with Git and collaborative development workflows.
• Experience with DevOps practices, including CI/CD, Infrastructure as Code, and monitoring.
• Familiarity with Kubernetes ecosystem tools (Ingress controllers, service meshes, monitoring solutions).
• Experience with GitOps workflows (ArgoCD, Flux, etc.) is a plus.
• Understanding of authentication and authorization mechanisms and general security best practices.
• Experience with observability tools such as Prometheus, Grafana, and ELK stack.
• Familiarity with backend requirements for mobile applications is a plus.

Responsibilities:

• Design and develop robust backend services and RESTful APIs using Rust and Actix Web
• Architect and implement efficient database schemas in PostgreSQL with PostGIS extension
• Write optimized SQL queries and database procedures for high-performance data operations
• Deploy and maintain services on Kubernetes in Open Telekom Cloud using Helm charts
• Manage Kubernetes resources, deployments, and service configurations
• Implement DevOps best practices including CI/CD pipelines, monitoring, and automated testing
• Collaborate with frontend and mobile teams to ensure seamless API integration
• Optimize system performance and scalabilit

Office/Remote: Remote

English level: Upper Intermidiate

Timezone: Germany

Hi there! We’re Onicore, a growing fintech company building user-friendly payment solutions for a global audience. And we’re looking for a marketing designer who thinks in terms of communication design, not someone who says “I only make banners.” This is a role with plenty of room for experimentation, unconventional ideas, and bold, even crazy concepts.
 

What you’ll do:

You'll be working on two levels:

1. Tactical / Day-to-Day Level:

Rapid production of marketing materials in various formats:

- Social media and ad creatives

- Presentations, pitch decks, and partner materials

- Promo videos and demo videos

- Guides, instructions, and other communication materials

- Occasionally - offline materials
 

2. Strategic / Partial Level:

- Support and evolve the visual style of products to ensure communication feels cohesive, modern, and premium.

- Work across products such as B2B solutions, regularly creating pitch decks, demos, presentations, and partner materials.
 

What we expect you to have:

- Experience in digital marketing design.

- Thinking in terms of communication design, not just individual formats.

- Ability to deliver across different types of tasks: performance materials, social media creatives, landing pages, presentations, and brand assets.

- Experience supporting and evolving a product’s or brand’s visual system.

- Strong portfolio with diverse deliverables (not focused on one format for years).

- Self-sufficiency: comfortable working with incomplete briefs, gathering context, and proposing solutions and options independently.

- Maintaining a consistently high quality bar without constant supervision.

- AI-friendly mindset: uses AI as a creative accelerator, experiments with new tools, and delivers professional-level results (not “generated-looking” visuals).

- Nice to have: agency experience or experience in a fast-paced environment with diverse tasks and quick iterations.
 

What’s on us:

- Competitive salary and benefits package.

- Opportunities for professional development and career growth.

- Health insurance.

- Remote work with the possibility to visit our office in Kyiv.

- Space to share your ideas and bring them to life.

Is this all about you? Send us your CV!

Who We Are
Gamified coin trading platform (Telegram Mini-App / Mobile-App) — AMM, lootboxes, event sourcing, custom EVM chain (backend). Live product with users. Small team. Need a strong senior dev to raise the bar and ship faster.

Tech Stack
TypeScript | NestJS | React | Solidity (Foundry) | PostgreSQL | Redis | EVM

You Have

• 4+ years with TypeScript / Node.js
• Strong technical background (CS, math, physics, or equivalent self-education) — you think in systems, not just frameworks
• You learn new domains fast — we'll teach the specifics, but the thinking is on you
• You write tests for things that handle money
• Comfortable with AI tools (Cursor, Claude, etc.)
• Startup mindset — self-directed, low hand-holding

Nice to Have

• Blockchain / Solidity / DeFi experience
• Event sourcing / CQRS
• React / Telegram Mini-App
• Team lead experience

You'll Get
 

• Technical ownership in a small team
• Remote, flexible schedule
• Path to CTO / equity as we grow

Send a few words about what interests you and a link to code you're proud of.
 

• Project Description:

  As a support engineer, you will be first point of user engagement, providing thoughtful day-to-day comprehensive technical support to users from initial challenge through resolution. This will include talking the user through account set up, to troubleshooting and resolving all technical issues. In this role, you will provide your insight and execution to drive the optimal user experience by phone call, email and remote assistance.

   

• Responsibilities:

  - Provides technical support and troubleshooting to network, desktop, and/or systems hardware and software.
  - Screens, refers and diagnoses internal inquiries and work requests as they relate to maintenance of personal computers and related systems.
  - Installs, configures, and upgrades computer hardware and software.
  - Provides end-user software troubleshooting and support.
  - Applies advanced diagnostic techniques to identify problems, investigate causes, and recommend solutions.
  - Provides troubleshooting and support.
  - Provides phone and help-desk support for local and off-site users.
  - Provides guidance and work leadership to less-experienced technicians, and may have limited supervisory responsibilities
  - Maintains current knowledge of relevant technologies as assigned.
  - Participates in special projects as required.

   

• Mandatory Skills Description:

  Windows server/AD/DHCP administration (accounting, policy handling, etc...)
  - Windows workstation admin (OS install, security patches, etc...)
  - Application software development install / maintain
  - Networking knowledge & troubleshooting + network related services ( proxy, DNS, WSUS)
  - Troubleshooting hardware problems
  - Excellent troubleshooting skills in complex software and hardware problems
  - Knowledge of structured cabling systems, able to design SCS fit out.
  
  • Non-technical skills
  
  - English language at least medium level
  - Ability to meet deadlines, manage multiple priorities and handle sensitive and pressured situations
  
  - Strong verbal and personal communication skills
  - Accuracy and Attention to details
  - Problem analysis, use of judgment and ability to solve problems efficiently
  - Verbal communication skills
  - Tolerant and flexible to different situations

• Project Description:

  Our client is a leading global Financial market data provider who runs a change program aiming to migrate a set of legacy data connectors to a new strategic platform. The main driver is to deliver high-quality software that connects Financial Markets across the globe in a real-time, high frequency, and low-latency data management chain. The projects are technically challenging in an environment that is very engaging. Projects will utilize a multitude of different languages and skillsets with a focus on C++ and scripting languages.
  
  We are looking for a C++ software engineer/developer with experience in implementation backend systems and services running under Linux, Cloud, ideally, with capabilities to deliver projects independently and coordinate work with BA, QA, Operational, and cross-functional application teams.

   

• Responsibilities:

  • Develop high-quality software, design, and functional documentation
  • Provide estimates for specific software feature implementation
  • Identify, prioritize, and execute tasks in the software development life cycle
  • Build unit tests for your code
  • Automate tasks through appropriate tools and scripting
  • Perform validation and verification testing
  • Collaborate with internal teams and vendors to fix and improve products
  • Ensure software is up-to-date with the latest technologies and standards

   

• Mandatory Skills Description:

  • 3+ years of full life-cycle software development experience
  • 3+ years of object-oriented development, in particular, C++
  • Experience developing under Linux
  • Ability to collaborate in a team-focused environment
  • Excellent analytical skills and a real passion for solving problems
  • English at the level of Upper-Intermediate (spoken)
   

   

• Nice-to-Have Skills Description:

  • Ability to suggest/research new technologies and quickly adapt to change
  • Experience working with Market Data and Trading

  •  Experience with Docker, AWS

Emerise Group is a dynamic, product-driven group of companies operating in the iGaming industry. We build high-impact solutions that fuel innovation and deliver outstanding user experiences across the entertainment ecosystem. We’re searching for a VIP Manager to own the full VIP journey - from daily personal communication and tailored rewards to spotting early churn signals and shaping loyalty strategies that keep top players engaged.
 

Must-Have Skills & Experience:

• Minimum 1 year, in a similar postion (VIP/Sales, Account, Support, Retention).
• Upper-Intermidiate German & English (spoken and written).
• Proven experience in VIP / support / retention / sales (preferably iGaming).
• Strong communication and relationship-building skills.
• Ability to work with KPIs, player activity, and performance metrics.
   

Desired / Preferred Skills:

• Confident in upselling, reactivation, and cross-selling.
• Experience in online casino / betting industry (big plus).
• Familiarity with CRM systems, segmentation, and reporting tools.
• Experience with multichannel communication (calls, SMS, messengers, email).
• Understanding of player lifecycle, retention mechanics, and bonuses.
   

Expected Duties / Tasks:

• Manage and grow a portfolio of VIP players.
• Build long-term relationships and ensure high engagement.
• Drive deposits, activity, and retention.
• Execute personalized offers, bonuses, and campaigns.
• Reactivate inactive players and prevent churn.
• Handle daily communication (calls, chats, emails).
• Collaborate with marketing teams to improve performance.
• Track performance and contribute to reporting & insights.
   

Selling Points:

• Remote-First Work Model: we offer a fully remote work environment, providing you with the flexibility to work from any location worldwide while maintaining high productivity and work-life balance.
• Growth-Oriented Environment: join a fast-growing business operating in a startup-driven environment with minimal bureaucracy. We value efficiency, ownership, and the ability to make decisions quickly.
• Opportunity to Make a Measurable Impact: you will play a key role in shaping directly with the Head of VIP and shape the future of the VIP program.
• Collaborative and Transparent Culture: we foster a professional, respectful, and open working culture where teamwork, accountability, and clear communication are core values.

We’re looking for a visionary Head of Product Design to lead the evolution of our digital ecosystem. This isn’t just about building features — it’s about shaping a unified, high-end experience across banking, crypto, and lifestyle products.

Key Responsibilities

1. Product Vision & Execution

• End-to-End Ownership: Guide the design direction across all product lines, ensuring seamless, premium experiences.
• Simplifying Complexity: Transform high-friction financial flows (e.g., KYC, staking, cross-border transfers) into elegant, user-friendly solutions.
• Data-Informed Design: Set and monitor design KPIs such as usability scores, task completion rates, and user satisfaction.

2. Team Leadership & Design Operations

• Mentorship: Lead and grow a high-performing team of 4+ UX/UI designers.
• AI-Driven Workflow: Integrate AI into design processes to accelerate prototyping and reduce manual tasks.
• System Evolution: Develop and maintain a design system (components, patterns, tokens) to support a fast-moving product roadmap.

3. Brand & Strategic Impact

• Brand Stewardship: Ensure the company’s visual identity is consistent and premium across apps, marketing materials, and online presence.
• Global Perspective: Conduct research across multiple regions, adapting design for local trust, culture, and user behavior.
• Marketing Collaboration: Work closely with marketing teams to create impactful brand campaigns and assets.

Requirements

• Experience: 5+ years in Product/UX Design, including 3+ years leading design teams in Fintech, Banking, or Crypto.
• Regulated Products: Experience delivering financial products in multiple jurisdictions while maintaining usability.
• Portfolio: A strong body of work showcasing strategic thinking, product design, and brand execution.
• Collaboration: Comfortable presenting bold directions to founders, engineers, and stakeholders.
• Technical Expertise: Advanced Figma skills and familiarity with AI-assisted design tools.
• Languages: Fluent English, Ukrainian.

ClickDealer is looking for Account Manager without experience in Warsaw office.

ClickDealer is one of the top 5 CPA networks in the world! The company has been in the performance marketing business since 2012, partnering with over 2000 advertisers across 20 main verticals. ClickDealer is headquartered in the Netherlands, spanning over 5 offices across the globe.
 

Required skills:

• Upper-intermediate+ English level;
• high analytical skills and ability to work with the large amount of data;
• readiness for prompt actions and responsibility for their implementation;
• high communication and presentation skills;
• ability of constant self-educations.
   

Responsibilities:

• be the "right hand" of the Sales Manager;
• maintain effective communication with the Affiliate managers` team (both in Ukrainian and in English);
• create and send newsletters to partners about all kinds of changes;
• create offers and promote them;
• monitor marketing statistics every day.

We offer:

• opportunity to develop and gain new knowledge in a company oriented to the international market;
• 20 business days of paid rest;
• 50% compensation for sport activities / sessions with a psychotherapist / courses / English, etc.
• paid sick leave;
• sharing experience and knowledge between teams.

Don't miss the opportunity to become a part of ClickDealer's top team, don't hesitate! Be at the peak, with the best.

About ListKit

ListKit is a B2B lead generation platform processing 825M+ person records, serving thousands of customers across DFY (done-for-you) and PLG (self-serve) segments. Our data enrichment pipeline runs on Google Cloud (Cloud Run, PubSub, Cloud Tasks, Firestore) with TypeScript/Node.js, backed by SingleStore for high-performance JOINs against our 825M+ record dataset and SQL Server for transactional order data.

We are an AI-first engineering team. Every engineer uses Claude (Anthropic) as a core development tool for architecture decisions, code review, debugging, estimation, and daily workflows. If you haven't worked with AI coding tools yet, that's fine, but you need to be excited about making it your primary way of working.

The Role

You will own the cloud-native data enrichment platform that powers ListKit's core product: turning customer search criteria into verified, enriched lead lists.

The enrichment service (TypeScript/Node.js on GCP) orchestrates the full pipeline: receiving order requests, querying 825M+ records via SingleStore stored procedures, routing records through email finder APIs (Enrow, Prospeo, LeadMagic) and email verifiers (MillionVerifier, TryKitt), tracking job lifecycle via Firestore counters, processing billing/refunds, and delivering final exports to GCS.

The integration challenge: This service must work in lockstep with our .NET backend, which manages the customer-facing order lifecycle in SQL Server. Today, these are two disconnected state machines. Your first major project is building the completion bridge so the enrichment platform's results flow back to the .NET order processing pipeline. You don't need to be a .NET developer; we have a strong .NET team. But you need to understand the integration surface and design clean APIs between the two systems.

What You Will Do

First 30 days

• Take ownership of the listkit-enrichment codebase (TypeScript/Node.js, Cloud Run)
• Understand the full enrichment flow: PubSub dispatch, Cloud Tasks per-row processing, provider waterfall, verification chains, Firestore lifecycle counters, SingleStore JOINs, billing/refund integration
• Build the completion callback: when GCP enrichment finishes, write results back to SQL Server's OrderProcessing table so the .NET pipeline detects completion
• Fix the data-retrieval PubSub subscriber gap

First 90 days

• Own the enrichment platform end-to-end: reliability, performance, monitoring, alerting
• Improve provider waterfall logic: smarter failover between Enrow, Prospeo, LeadMagic, and the SingleStore JOIN path
• Build observability: structured logging, Cloud Monitoring dashboards, SLA tracking per provider
• Reduce enrichment latency for large orders (1000+ records)
• Work with the .NET team to design the target architecture where GCP enrichment fully replaces the Windows Services

Ongoing

• Adding external email finding/verification API providers to Cloud Run/Cloud Tasks
• Optimize SingleStore stored procedures (sp_enrich_csv) for the 825M+ record dataset
• Scale the enrichment platform for higher throughput as order volume grows
• Build and maintain the external enrichment API (API key auth, rate limiting, usage tracking)
• Contribute to infrastructure-as-code (Terraform for GCP resources)

Required Skills

TypeScript/Node.js (3+ years)

• Express.js, async/await, Promises, streaming
• Building and consuming HTTP APIs at scale
• Error handling in distributed async workflows (retries, idempotency, dead-letter queues)

Google Cloud Platform (2+ years, or equivalent AWS/Azure)

• Cloud Run (containerized services, autoscaling, concurrency)
• PubSub (message queues, subscriptions, delivery guarantees)
• Cloud Tasks (HTTP task dispatch, rate limiting, retry policies)
• Firestore (document database, transactions, atomic counters)
• GCS (object storage, signed URLs, streaming reads)
• Terraform (infrastructure-as-code)

Database experience

• SQL: complex JOINs, stored procedures, query optimization against 100M+ row tables
• SingleStore, MySQL, or PostgreSQL (enrichment service uses SingleStore)
• Basic SQL Server knowledge for the integration surface

Distributed systems thinking

• State tracked across multiple stores (Firestore + SingleStore + SQL Server)
• Eventual consistency, idempotency guards, distributed locking
• Job lifecycle management: queued, processing, completed, failed
• Rate limiting against third-party APIs with different throttle characteristics

AI-first development mindset

• Experience with AI coding assistants (Claude, GitHub Copilot, Cursor, or similar)
• Willingness to use Claude as your primary tool for code review, debugging, architecture, and estimation
• We estimate all engineering work assuming AI-assisted development. Mechanical work compresses dramatically. You estimate only irreducible human work.

Nice to Have

• Experience integrating with third-party enrichment/data APIs (email finders, verifiers, data providers)
• Experience building multi-tenant SaaS APIs with API key authentication and per-plan rate limiting
• Stripe billing integration (credits, refunds, usage-based pricing)
• Understanding of .NET/C# (reading code, understanding integration points)
• Event-driven architectures and CQRS patterns
• Familiarity with Linear for project management

How We Work

• AI-first: Claude is embedded in everything we do. Code review, spec writing, debugging, Linear issue management. We track AI adoption scores and expect engineers to reach Vanguard tier.
• Async by default: Team spans Lisbon (WET/WEST), Ukraine (EET) and US. Written communication via Slack, Linear, and documented decisions.
• Ship fast, fix fast: Continuous deployment for hotfixes, scheduled release trains for features. Production incidents get addressed immediately.
• Ownership mentality: You own your systems end-to-end. If the enrichment platform breaks, you fix it.

Tools & Stack

Your primary stack

• TypeScript (Node.js 20+) on Google Cloud Run
• Google Cloud: PubSub, Cloud Tasks, Firestore, GCS, Secret Manager, Cloud Build
• SingleStore (825M+ row dataset, stored procedures, columnar JOINs)
• Terraform (infrastructure-as-code)
• Third-party APIs: Enrow, Prospeo, LeadMagic, MillionVerifier, TryKitt, AtData

Integration surface

• SQL Server (read/write to OrderProcessing table for the .NET bridge)
• .NET backend (you design the API contract; the .NET team implements their side)

Shared tooling

• Claude (Opus/Sonnet via claude.ai, Claude Code CLI, MCP connectors)
• Linear (project management with Claude-integrated workflows)
• Slack, Google Meet, Granola (meeting notes)
• GitHub Actions (CI/CD), Stripe (billing), Intercom (support), HubSpot (CRM)

How to Apply

Send your CV and a short note (3-4 sentences) answering one of:

1. "Describe a Cloud Run or serverless service you built that processes jobs asynchronously via PubSub/SQS/EventBridge. How did you handle job lifecycle, retries, and completion detection?"

2. "Tell us about a time you had to integrate two systems that tracked state in different databases. How did you design the bridge?"

We will prioritize candidates who can start within 2-3 weeks.

About Cowchain
Cowchain is a Web3 development company behind PixelVerse, StepApp, RetroBridge, Hybrid, Tenet, and 150+ other blockchain products with $180M+ combined market cap. We're a team of 50+ people—mostly based in Ukraine, some across Europe, fully remote. We build across DeFi, GameFi, neobanking, cross-chain bridges, AI agents, NFT platforms, and Telegram mini-apps.
We look for people who take ownership, think deeply, and enjoy figuring things out on their own. No unnecessary hierarchy—you talk directly to the founders when it matters. We value what you bring over how long you've been around.

About the role
We're looking for a Technical Lead to take full ownership of a product vertical within one of our partner's teams through Cowchain's outstaffing model. The product is a fintech/DeFi platform—a decentralized financial ecosystem merging traditional banking with blockchain and AI, used by 70,000+ paying clients across 40+ countries.
This is a hands-on leadership role. You'll design architecture, write code, manage a team of 5+ engineers, and collaborate directly with the CTO and founders.

What you'll do

• Take full technical ownership of a product vertical (e.g., hybrid card-crypto wallet) 
• Design and implement scalable systems while staying hands-on with coding 
• Lead a team of 5+ engineers—set standards, review code, unblock people 
• Collaborate with the Delivery Manager for rapid product delivery 
• Work with external partners and vendors for solution integration 

• Make architectural decisions that balance speed, scalability, and maintainability

   

What we're looking for

• 7+ years of software engineering experience with a focus on scalable systems 
• Deep expertise in Java (Spring Boot), Node.js (TypeScript), and React 
• Hands-on experience with AWS (EKS, RDS, S3, MSK), Terraform, Helm
• Experience with monitoring and observability (Prometheus, Grafana) 
• Ability to modernize legacy systems and integrate new solutions 
• Leadership experience managing teams of 5+ people or owning a product vertical 

• Fluent English (written and spoken)—daily communication with international leadership

   

Nice to have

• Fintech or DeFi experience: smart contracts, staking, DEX/CEX integration 
• Familiarity with L1 blockchain platforms 
• Knowledge of AI engines for transaction analysis or risk management 

• Background in product companies or outsourcing (solution architect role)

   

What we offer

• Fully remote work 
• Paid vacation and sick leave 
• AI tool subscriptions (ChatGPT, Claude, Gemini) for your daily work 
• Internal knowledge sharing and learning programs 
• Individual onboarding tailored to your role and project 

• Support during power outages—equipment and coworking compensation

   

How it works
This is an outstaffing position: you work on a partner's fintech product as part of their engineering team, while Cowchain handles your contract, payments, and support. You get the best of both worlds—a product environment with the backing of a company that looks out for you.

About Cowchain
Cowchain is a Web3 development company behind PixelVerse, StepApp, RetroBridge, Hybrid, Tenet, and 150+ other blockchain products with $180M+ combined market cap. We're a team of 50+ people—mostly based in Ukraine, some across Europe, fully remote. We build across DeFi, GameFi, neobanking, cross-chain bridges, AI agents, NFT platforms, and Telegram mini-apps.
We look for people who take ownership, think deeply, and enjoy figuring things out on their own. No unnecessary hierarchy—you talk directly to the founders when it matters. We value what you bring over how long you've been around.

About the role
We're looking for a Backend Engineer to join one of our partner's product teams through Cowchain's outstaffing model. You'll be working on a fintech/DeFi product—a decentralized financial platform that merges traditional banking with blockchain and AI, serving 70,000+ paying clients across 40+ countries.
Cowchain will employ you, providing all the necessary support, while you work as an embedded team member on the partner's product.

What you'll do

• Own the development, support, and optimization of backend services within the product ecosystem 
• Build and maintain APIs using Java and Node.js 
• Collaborate with the backend team on event-driven architectures (Kafka, NestJS microservices) 
• Implement financial transaction flows, validation logic, and referral systems 
• Optimize PostgreSQL performance on an ongoing basis
• Establish monitoring, alerting, and incident response standards 
• Review architecture proposals and ensure alignment with business logic 

• Work directly with the CTO, Product Owner, and Delivery Manager

   

What we're looking for

• 7+ years of backend engineering experience with a focus on scalable systems 
• Strong hands-on experience with both Java and Node.js in production 
• PostgreSQL, Kafka, NestJS microservices 
• Experience modernizing legacy systems and integrating new solutions 

• Fluent English (written and spoken)—the team is international

   

Nice to have

• Fintech, DeFi, or payments domain experience 

• Familiarity with tokenomics or blockchain-based business logic

   

What we offer

• Fully remote work 
• Paid vacation and sick leave 
• AI tool subscriptions (ChatGPT, Claude, Gemini) for your daily work 
• Internal knowledge sharing and learning programs 
• Individual onboarding tailored to your role and project 

• Support during power outages—equipment and coworking compensation

   

How it works
This is an outstaffing position: you work on a partner's fintech product as part of their engineering team, while Cowchain handles your contract, payments, and support. You get the best of both worlds—a product environment with the backing of a company that looks out for you.

Security isn’t a state — it’s a process. And we’re looking for someone who knows how to drive it.

Softsich is a young and ambitious international product tech company that develops scalable B2B digital platforms. We combine strategic vision with deep tech expertise to build and scale high-performance products. Right now, we’re looking for a Security Engineer to strengthen our internal infrastructure and help automate key security workflows.

Your key responsibilities will include:
 – Monitor and analyze security alerts across multiple security platforms (SIEM, EDR, SOAR)
 – Lead Incident Response -  serve as primary responder to security alerts, perform initial triage, conduct investigations, and coordinate remediation
 – Enhance Detection Capabilities - design, implement, and fine-tune detection rules and alerts across cloud environments
 – Conduct endpoint, network, and application log analysis to identify suspicious activity
 – Collaborate with IT, DevOps, and Compliance teams to enforce security standards and best practices
 – Assist in improving incident response processes, playbooks, and operational practices
 – Stay informed about emerging cybersecurity threats, trends, and industry developments
 – Deploy and manage MDM/UEM solutions (Jamf, Jumpcloud) across all endpoints
 – Advocate for best practices in IT and change management to strengthen security posture
 – Define and enforce security policies for workstations (passwords, encryption, restrictions, app controls)
 – Perform regular audits and compliance checks aligned with corporate standards
 – Monitor device health and security compliance, respond to related alerts
 – Coordinate patching and updates on endpoints through MDM
 – Conduct inventory and asset tracking, including remote wipe and lock management
 – Provide endpoint security reporting and metrics to IT leadership and compliance
 – Collaborate with incident response teams on mobile endpoint incidents

It’s a match if you have:
 – 3+ years in IT Operations, System Administration, or related roles
 – Experience in security threat analysis or incident response, ideally within a SOC
 – Proven experience responding to and managing incidents in cloud environments (AWS, Azure, GCP) and SaaS services (Google Workspace, Atlassian)
 – Proficiency with SIEM platforms, including rule creation, tuning, and maintenance
 – Strong knowledge of cloud security monitoring tools and techniques
 – Understanding of network infrastructure
 – Experience analyzing endpoint, network, and application logs for anomalies
 – Practical understanding of common attack vectors and how to detect them
 – Experience with security automation and scripting for incident response workflows
 – Understanding of IT system architecture, network design, and IT/change management processes
 – Experience with virtualization technologies
 – Familiarity with identity management
 – Proficiency in platforms used for information security investigations and triage

Nice to have:
 – Experience with cloud-native security tools and services
 – Familiarity with scripting or automation (PowerShell, Bash, Python)
 – Experience with endpoint detection solutions and email security technologies
 – Knowledge of IT security audit techniques

What we offer:
 – A competitive salary
 – Remote work format or a modern office in Warsaw and/or Kyiv
 – Flexible working hours
 – An incredibly friendly team where everyone is ready to share knowledge, help, and support
 – 24 working days of paid annual vacation
 – Paid sick leave
 – Health insurance (available for specialists based in Ukraine; other countries — in progress)
 – Zero joules of energy to the aggressor state, its affiliated businesses, or partners
 – Conference and business travel expenses covered (where applicable)
 – Birthday greetings (because you matter!)
 – Online and offline teambuilding events
 – Corporate celebrations

Send over your CV now — we’d love to get to know you better!

About Cowchain
Cowchain is a Web3 development company behind PixelVerse, StepApp, RetroBridge, Hybrid, Tenet, and 150+ other blockchain products with $180M+ combined market cap. We're a team of 50+ people—mostly based in Ukraine, some across Europe, fully remote. We build across DeFi, GameFi, neobanking, cross-chain bridges, AI agents, NFT platforms, and Telegram mini-apps.
We look for people who take ownership, think deeply, and enjoy figuring things out on their own. No unnecessary hierarchy—you talk directly to the founders when it matters. We value what you bring over how long you've been around.

About the role
We're looking for a Backend Engineer to join one of our partner's product teams through Cowchain's outstaffing model. You'll be working on a fintech/DeFi product—a decentralized financial platform that merges traditional banking with blockchain and AI, serving 70,000+ paying clients across 40+ countries.
Cowchain will employ you, providing all the necessary support, while you work as an embedded team member on the partner's product.

What you'll do

• Build and own integrations with third-party providers (payment systems, KYC, banking APIs) 
• Ensure compliance and technical alignment between internal teams and external partners 
• Collaborate with the backend team on event-driven architectures (Kafka, NestJS microservices)
• Build and maintain APIs using Java and Node.js 
• Optimize PostgreSQL performance on an ongoing basis 
• Establish monitoring, alerting, and incident response standards 

• Work directly with the CTO, Product Owner, and Delivery Manager

   

What we're looking for

• 7+ years of backend engineering experience with a focus on scalable systems 
• Strong hands-on experience with both Java and Node.js in production 
• Proven track record of integrating third-party services (payment providers, external APIs, compliance tools) 
• PostgreSQL, Kafka, NestJS microservices 
• Experience modernizing legacy systems and integrating new solutions 

• Fluent English (written and spoken)—the team is international

   

Nice to have

• Fintech, DeFi, or payments domain experience 

• Familiarity with tokenomics or blockchain-based business logic

   

What we offer

• Fully remote work 
• Paid vacation and sick leave 
• AI tool subscriptions (ChatGPT, Claude, Gemini) for your daily work 
• Internal knowledge sharing and learning programs 
• Individual onboarding tailored to your role and project 

• Support during power outages—equipment and coworking compensation

   

How it works
This is an outstaffing position: you work on a partner's fintech product as part of their engineering team, while Cowchain handles your contract, payments, and support. You get the best of both worlds—a product environment with the backing of a company that looks out for you.

About the Mission

We are building an AI-driven payments ecosystem designed to transform a $50B industry still dominated by slow, legacy processors. As Head of ISO, your mission is to architect, lead, and scale our merchant acquisition engine. You will set the commercial direction, build high-performing processes, and drive measurable revenue impact - first through hands-on execution, and then by leading automated, scalable systems you help define.

What You’ll Do

• Architect and launch the ISO function end-to-end: strategy, operating model, tooling, and execution;
• Own the full merchant pipeline: prospecting → qualification → underwriting coordination → negotiation → closing → onboarding/activation;
• Define and refine commercial fundamentals: pricing strategy, merchant segmentation, and offer frameworks aligned with risk and margins;
• Build scalable operational workflows and enforce portfolio health ratios (chargebacks, fraud, dispute rates), in close coordination with Risk/Compliance and Processing partners;
• Map and manage banking/acquiring coverage (“bank mapping”) and route merchants to the right partners based on vertical, geography, and risk profile;
• Build and maintain relationships with PSPs, acquirers, and key commercial partners to unlock approvals, improve conversion, and expand capacity;
• Standardize playbooks, scripts, and governance, ensuring every opportunity is tracked, advanced, and optimized for conversion;
• Drive process automation with Product & Engineering: convert manual tasks into AI-powered workflows across outreach, qualification, CRM hygiene, and reporting;
• Recruit, develop, and lead the ISO team, creating a high-performance culture centered on consistency, accountability, and results;
• Deliver advanced reporting, forecasting, and KPIs to leadership; act as a senior commercial partner shaping revenue strategy and growth targets.

You’re a Strong Fit If

• You’ve built or scaled an ISO/merchant services function and know what “from zero to repeatable engine” looks like;
• You have strong domain understanding of underwriting, processing economics, risk, and portfolio management;
• You are equally comfortable leading and executing - entrepreneurial, hands-on, and operationally rigorous;
• You thrive in fast-changing environments, build structure quickly, and drive predictable outcomes at scale;
• You operate with urgency, handle high-stakes initiatives, and take full ownership of results.

Required Skills

• Extensive experience in ISO / merchant services / payment processing, ideally with proven ISO build/launch exposure;
• Track record of closing complex merchant deals and managing merchant portfolios with strong risk awareness;
• Ability to define pricing/segmentation and align commercial execution with underwriting and partner constraints;
• Strong operational discipline: scalable workflows, CRM governance, forecasting, and KPI-driven management;
• Excellent communication, negotiation, and relationship management; leadership maturity and resilience.

Nice-to-Have

• Experience in fintech, SaaS, or payment technology environments;
• Familiarity with CRM systems, outbound engines, or automation workflows;
• Background in building or managing distributed commercial teams.

Why This Role Matters

• Shape the commercial backbone of a fast-moving, high-impact payments ecosystem.
• Direct access to founders and leadership, with zero bureaucracy and high decision velocity.
• Full ownership and autonomy: you build the system, the team, and the results from scratch.
• Competitive compensation with significant performance-based upside.
• A rare opportunity to lead innovation in one of the most lucrative and underserved segments of fintech.