Jobs at Djinni

We are looking for a Brand Designer who can develop and maintain a strong, consistent visual identity across both digital and offline touchpoints.

You’ll work across a wide range of brand-related projects — from digital campaigns and advertising materials to merchandise, events, and physical brand spaces. We’re looking for someone who thinks beyond individual layouts and understands how to build and evolve a cohesive visual language.
 

HOW YOU WILL MAKE AN IMPACT

• Develop and maintain the brand’s visual identity, working with color, typography, graphic elements, composition, and other key brand assets.
• Adapt the existing visual identity to new tasks and formats while maintaining brand consistency.
• Create visual solutions for both B2C and B2B communications, adapting the brand’s tone and visual approach to different audiences and business objectives.
• Develop and adapt visual materials for digital channels, including websites, landing pages, social media, digital campaigns, display and external advertising.
• Develop concepts and designs for merchandise and branded products, including corporate gifts, clothing, accessories, and other brand materials.
• Prepare merchandise designs and production-ready files and work with suppliers to ensure the final result meets brand standards.
• Develop visual concepts for exhibitions, conferences, events, and offline spaces, including booth graphics, navigation, environmental design, and supporting materials.
• Create key visuals and adapt them across different formats, including outdoor advertising, digital banners, print materials, presentations, and promotional assets.
• Contribute to the development and maintenance of the brand book and design guidelines, including visual principles, usage rules, and examples across different channels.
• Review internal and external materials to ensure visual consistency and adherence to brand guidelines.
• Prepare production-ready files for digital and print projects and communicate with print houses, merchandise suppliers, booth builders, and other contractors.
• Research visual trends, references, and new approaches to keep the brand modern, recognizable, and relevant while maintaining its visual heritage.
• Contribute to the ongoing evolution of the brand’s visual language.
   

WHAT WILL HELP YOU SUCCEED IN THE ROLE

• Proven professional experience specifically in brand design, with hands-on experience creating, developing, and maintaining visual identities.
• Strong understanding of how to build a cohesive visual system and scale it across different formats and brand touchpoints.
• Strong visual culture and design awareness, with a good understanding of current trends in design, typography, composition, and digital and offline communications.
• Ability to distinguish strong visual solutions from generic or template-based approaches and clearly explain your design decisions.
• A strong and relevant portfolio demonstrating branding, visual identity, and communication projects.
• Experience working across both digital and offline formats, including websites, social media, advertising, merchandise, exhibition stands, and other brand materials.
• Strong understanding of brand consistency and the ability to maintain a recognizable visual language across different audiences, formats, and business objectives.
• Ability to work independently and take design projects from concept through to final implementation.
• Attention to detail and the ability to work within an established visual identity while also identifying opportunities to evolve it.
• Experience in iGaming, betting, gaming, or related industries will be a plus, but is not required.
• Most importantly, strong brand design expertise and the ability to quickly understand a new product, audience, and industry.
   

HOW WE WILL KEEP YOU SMILING

• Flexible working hours and a remote work setup, so you can plan work around your life and not your life around work!
• Unlimited vacation days and paid sick leave—because your rest matters.
• A competitive compensation that truly reflects your skills and expertise.
• Employee referral bonus and gifts to celebrate your special occasions.
• 50% financial support for learning expenses to supercharge your professional growth!
• A positive atmosphere where you always feel respected and truly belong.
• Inspirational team-building activities that turn colleagues into best friends.
• Wellness benefits: We’ll support your sports passions, from yoga classes to gym memberships.
• Co-working space reimbursement to save your nerves from always working from home :)

We are looking for a Senior VoIP / Unified Communications Engineer to design, deploy, and support a centralized VoIP phone system for six retail locations in the United States.

The role is highly hands-on and requires strong production experience with Asterisk or FreeSWITCH, US telephony, SIP infrastructure, networking, and multi-location environments.

The initial stage will focus on architecture and deployment, with an opportunity for ongoing maintenance and further development.

About the project

Each location will have its own:

• US phone numbers / DIDs
• Extension range
• Outbound Caller ID
• Business hours and holiday schedules
• IVR
• E911 emergency address

Employees must also be able to call extensions across locations.

The VoIP platform will be centrally managed and integrated with CRM systems.

Responsibilities

• Design and document the VoIP architecture
• Recommend and deploy Asterisk / FreePBX or FreeSWITCH / FusionPBX
• Configure 6 locations as separate sites or tenants
• Configure local and cross-location extension dialing
• Configure US DIDs, SIP trunks, inbound/outbound routing and Caller ID
• Implement E911 and per-location emergency addressing
• Configure IVRs, ring groups, queues, voicemail, call recording, business hours and holidays
• Provision IP phones and softphones
• Troubleshoot SIP, RTP, NAT, codecs and one-way audio
• Review network requirements: VLAN, QoS, PoE, firewalls and Internet failover
• Implement security against toll fraud, brute-force attacks and unauthorized registrations
• Set up monitoring, alerting, backups and disaster recovery
• Maintain technical documentation and train internal administrators
• Provide post-launch support

Requirements

• 4+ years of hands-on production VoIP experience
• Strong production experience with Asterisk or FreeSWITCH
• Strong knowledge of SIP, SDP, RTP, NAT and codec negotiation
• Experience with sngrep, Wireshark and packet captures
• Strong Linux and networking skills
• Experience with US SIP trunk providers and DID routing
• Experience with multi-site or multi-tenant VoIP environments
• Experience with monitoring, backups, PBX security and disaster recovery
• Strong written technical documentation skills
• Ability to communicate technical decisions clearly in English

• Availability to overlap with US business hours

   

Nice to have

• Experience with UCaaS / CCaaS, hosted PBX, CPaaS or telecom SaaS
• Experience with call-center or automotive/dealership products
• Telephony integration with CRM, APIs and webhooks
• Experience with FusionPBX, Kamailio, OpenSIPS, SBCs or RTPengine
• Experience with Telnyx, Bandwidth, Twilio, Flowroute or similar US carriers
• Knowledge of E911, STIR/SHAKEN, CNAM and caller reputation
• Experience with Yealink, Poly or Grandstream provisioning
• Experience with SMS/MMS and A2P 10DLC
• CDR, call events and call-recording storage
• Bash, Python or Node.js
• High Availability / Disaster Recovery experience

• Previous experience working for a VoIP, UCaaS, contact-center or telecom company serving the US market

   

Work format

Remote

The project is focused on the US market, so partial overlap with US business hours is required.

We are looking for a specialist who can take ownership of the technical solution from architecture and deployment through launch and ongoing support.

About Us

Smart Capital Center is the only end-to-end, AI-powered platform for CRE investment and financial management. Purpose-built to power real-time underwriting, asset management, and portfolio analysis, the platform combines live data intelligence, workflow automation, and AI-driven insights to accelerate decision-making, reduce risk, and spot opportunities others miss.

Operating at the intersection of Generative AI, finance, and real estate, we build technology that digitizes, automates, and delivers deep insight into every stage of real estate investment and financing transactions.

Our clients include some of the largest real estate and financial institutions in the U.S., including JLL, Pacific Life Insurance Company, and KeyBank. We are a lean, high-performance team building category-defining technology in a $17 trillion industry.

The Opportunity

We are looking for a Team Lead – Senior Frontend Engineer to drive the architecture, quality, and evolution of our frontend systems.

This is a hands-on leadership role. You will guide frontend development standards, mentor engineers, collaborate closely with Product and UX teams, and deliver high-performance, scalable, and elegant user interfaces that power complex financial workflows.

This role operates in an AI-augmented development environment, where engineers leverage modern AI code agents (such as Cursor, Claude Code, Windsurf, etc.) to accelerate development, improve code quality, and increase engineering productivity.

If you thrive in high-ownership environments and enjoy building sophisticated, data-driven platforms, this role is for you.

What You Will Do

Technical Leadership

-Lead frontend architecture decisions and establish engineering best practices
-Mentor and guide frontend engineers through code reviews and design discussions
-Ensure scalability, maintainability, and performance across the platform
-Drive high-velocity feature development while maintaining high code quality
-Establish and promote effective use of AI code agents and AI-assisted engineering tools across the frontend team

Product & UX Collaboration

-Work closely with product specialists and UX engineers to design and deliver a state-of-the-art UI
-Translate complex financial workflows into intuitive and elegant user experiences
-Maintain consistent UI/UX standards across the platform

Frontend Development

-Develop usable, performant, and maintainable frontend applications
-Contribute to component-based development in ReactJS using Redux/MobX
-Handle API integration and API payload preparation/processing
-Optimize application performance and ensure responsive, data-rich interfaces
-Use AI code assistants and code agents (Cursor, Claude Code, Windsurf, etc.) to accelerate development, refactoring, debugging, and code quality improvements

Requirements and Qualifications

-5+ years of successful web development experience
-2+ years in a senior or technical leadership capacity
-Strong programming skills in TypeScript, JavaScript (ES5/ES6), CSS, and HTML
-Deep experience with ReactJS; familiarity with Redux/Flux/MobX
-Experience designing scalable frontend architecture
-Strong problem-solving and system design skills
-Proficiency with Git or comparable version control systems
-Experience working in remote SCRUM teams (daily standups, grooming, sprint planning)
-Hands-on experience using AI-assisted development tools or AI code agents (e.g., Cursor, Claude Code, Windsurf, Copilot, etc.) to improve development velocity and code quality
-Ability to effectively guide teams in adopting AI-augmented engineering workflows
-Strong ownership mindset and ability to lead by example
-English proficiency: Beginner or higher

Nice to Have

-Strong sense of frontend design and UX
-Experience with Webpack, Gulp, or similar build tools
-Familiarity with SASS/SCSS
-Experience in data visualization using ECharts, D3.js, or similar
-Knowledge of Google Maps API or Mapbox
-Experience with testing frameworks such as Jest
-Familiarity with analytics and data-driven applications
-Experience with AI-assisted coding environments and AI engineering workflows
-Experience in high-velocity feature development environments
-Proactive, high-energy, competitive, and creative mindset
-Strong drive for continuous improvement

Benefits of Joining Our Team

-Be at the forefront of innovation in a $17 trillion industry and play a pivotal role in shaping its future

-Interact with leading fintech and real estate companies and the country’s largest financial institutions, assisting them in digital transformation

-Contribute to a product revolutionizing the U.S. real estate industry and trusted by prominent financial institutions

-Flexible work arrangement

-Collaborate with an efficient management team with no bureaucratic hurdles

-Play a vital role as a member of a lean, highly professional team

-Competitive compensation and benefits

-Generous paid time off

Visit us at: https://smartcapitalcenter.com

STDev is hiring a Blockchain Developer. 
 

Core technical requirements:
- Java
- Spring Boot
- SQL
- 3+ years of production Bitcoin/blockchain experience
- Strong Bitcoin network and transaction knowledge
- Manual transaction construction
- UTXO management and coin selection
- PSBT / BIP-174
- SegWit
- Bitcoin Script and address types
- Secure wallet key management
- Multisig architecture and coordination
- BIP-48 and BIP-67
- P2WSH
- PSBT combination and finalisation
- Fee estimation and mempool analysis
- RBF and CPFP
- Witness data assembly
- BIP-143
- DER signature encoding and low-S enforcement
- Transaction lifecycle and stuck-transaction remediation
- UTXO indexing and balance computation
- UTXO consolidation
- Deposit and address monitoring
- HD wallet gap-limit handling
- Change-address derivation and address reuse prevention
- Descriptor-based wallet import and recovery
- Bitcoin finality, confirmation depth, dust limits and double-spend detection
- Experience designing systems combining backend, database and Bitcoin node
- Production Bitcoin custody or wallet infrastructure experience

Additional engineering requirements:
- TDD and/or BDD
- Domain-Driven Design
- Monorepo architectures
- Shared libraries
- Coordinated CI/CD pipelines

STDev is hiring a Senior Crypto Developer. 

Core technical requirements:

- Strong Rust experience
- Hands-on HSM experience
- Experience coding against Thales, IBM, Utimaco, Securosys, and/or cloud HSMs
- Understanding of what code can be executed directly on an HSM
- Experience designing and engineering cryptographic wallet technologies, especially HSM-based wallets
- Knowledge of public blockchains such as BTC, ETH and/or SOL
- HSM-based transaction signing using ECDSA, EdDSA, and Schnorr
- PKCS#11
- Secure coding practices
- GitHub

Preferred experience:

- MPC wallets
- Post-quantum hardening
- Cloud development
- Azure
- GitOps
- CI/CD with Kubernetes
- Staking, lending, CeFi, DeFi, and ZK-rollups
- Traditional financial markets

We are hiring on behalf of our client – an American media company with an office in Warsaw. They run large-scale newsletter and web operations across finance, health, and business verticals. The design team ships high-volume landing pages and web properties that directly impact revenue. Speed and quality are the two things measured above everything else.
 

The role

This is a leadership role at the intersection of design, marketing, and execution. You will own the design pipeline end to end: leading projects from brief to launch, managing and developing a team of designers including leads who report into you, and acting as the central traffic manager for all design work across the operation.

You are not just coordinating. You are setting the creative direction, reviewing work in progress, pushing the standard higher, and making sure nothing loses momentum. You bring your own point of view on what makes a page convert — and you apply it every day.
 

What you will own

• Design projects end to end: brief, creative direction, review, launch
• Traffic management for all design requests across the operation
• Team development: regular reviews, feedback, skill plans, hiring
• Conversion thinking: you know what makes a page perform, not just look good
• Design systems and workflows: briefs, review cycles, handoffs, version control
   

Must-have

• 4+ years in design project management, creative operations, or a similar leadership role at a fast-paced agency or in-house team
• Strong understanding of web design and design fundamentals — you give useful feedback and tell good work from average
• Strong understanding of marketing and conversion — landing pages, not just aesthetics
• Proven experience leading and developing a design team, not just coordinating one
• Ability to traffic-manage high-volume design work across multiple projects simultaneously
• AI-first operator — you already use AI across ideation, briefing, research, image generation, and project management. This is your default, not an experiment
• C2 English, written and verbal
   

Nice to have

• PM certification (PMP, PRINCE2, Scrum, or equivalent)
• Hands-on Figma proficiency
• Experience integrating AI tools into a design team workflow: Midjourney, AI copy, automated briefing, AI-assisted design
• Experience with Notion, ClickUp, Asana, or similar
• Background in performance marketing, affiliate, newsletter, or media
   

Compensation and benefits

• Competitive salary + bonuses
• 21 paid vacation days, 14 paid sick days
• Hybrid format, Warsaw office
• B2B contract, company covers taxes

We're looking for an SEO professional who enjoys solving complex SEO challenges at scale.

This is not a traditional Link Building or Outreach role. We're looking for someone who thinks in systems, builds scalable processes, and leverages automation to drive long-term organic growth rather than relying solely on manual outreach.

You'll work on growing the authority and visibility of a large portfolio of international websites, where the challenge isn't optimizing a single project—it's designing repeatable SEO processes that deliver results across hundreds of domains.

What You'll Do

• Develop and execute scalable off-page SEO strategies across a portfolio of international websites.
• Design, improve, and optimize scalable link acquisition processes instead of relying solely on traditional outreach.
• Research, test, and implement new approaches to accelerate organic growth.
• Analyze competitors and identify scalable SEO growth opportunities.
• Evaluate backlink quality using key SEO metrics such as Domain Rating (DR), referring domains, topical relevance, organic traffic, indexing status, and spam signals.
• Monitor backlink health, anchor profile, lost links, and overall backlink performance.
• Leverage AI tools to improve research, prospecting, competitor analysis, reporting, and overall workflow efficiency.
• Identify repetitive SEO tasks and automate them whenever possible.
• Collaborate closely with SEO, Content, and Product teams to improve search visibility and organic performance.

• Stay up to date with Google Search, AI Search, Bing, and emerging SEO trends to continuously improve our strategies.

   

What We're Looking For

• 3+ years of experience in SEO, Off-page SEO, Affiliate SEO, Link Building, or a related field.
• Experience working with international websites in competitive markets.
• Proven experience designing scalable SEO or link acquisition strategies.
• Strong hands-on experience with Ahrefs, Semrush, Google Search Console, Google Analytics 4, and Google Sheets.
• Solid understanding of modern search ranking factors and backlink quality assessment.
• Strong analytical mindset with the ability to identify scalable growth opportunities.
• Regular use of AI tools (ChatGPT, Claude, Gemini, Perplexity, etc.) as part of everyday SEO workflows.
• Experience automating repetitive SEO tasks or building scalable workflows.
• A systems-thinking mindset with the ability to design processes rather than simply execute tasks.
• Upper-Intermediate (B2) English is prefered

Nice to Have

• Experience with automation tools such as Make, Zapier, n8n, Google Apps Script, or similar platforms.
• Basic scripting skills in Python, JavaScript, or SQL for SEO automation.
• Experience managing SEO across large website portfolios.
• Experience in Affiliate SEO or highly competitive industries such as Gambling, Betting, Casino, Crypto, Nutra, Lead Generation, or similar.
• Experience using Screaming Frog or other SEO crawling tools.
• Hands-on experience applying AI to SEO research, competitor analysis, and workflow automation.
• Familiarity with Bing SEO and AI-driven search engines.
• Experience building internal SEO tools, dashboards, or automated reporting systems.

• Why You'll Love This Role

   

This is an opportunity to work on SEO at scale.

Rather than focusing on individual campaigns, you'll help design systems, experiment with new approaches, automate workflows, and build repeatable SEO processes that support long-term organic growth across a large portfolio of international projects.

If you're excited by solving complex SEO challenges, testing new ideas, leveraging AI to work smarter, and shaping the future of scalable SEO, we'd love to hear from you.

We offer:

• Paid vacation and sick leave
• We provide the equipment you need to work comfortably (if required)
• We cover 50% of courses if you want to grow professionally
• Regular salary reviews based on your performance
• Competitive salary, depending on your experience
• Always on-time payments — no delays
• A normal, supportive team without unnecessary bureaucracy

🚀 We are looking for a Middle AI Engineer to build scalable AI-powered applications, developer tools, and workflow automation solutions that improve engineering productivity and deliver measurable business value.

This role is ideal for a strong Python engineer with hands-on experience building and deploying LLM-based applications. You will work on solutions involving RAG, AI agents, model integrations, backend services, and AI evaluation.

🎯 Responsibilities

- Design, build, and deploy LLM-powered applications from prototype to production.

- Develop AI agents, tool-using workflows, and multi-step automation solutions.

- Build and improve RAG pipelines using internal and third-party data sources.

- Integrate commercial and open-weight models such as OpenAI, Anthropic Claude, Google Gemini, and Llama-based models.

- Develop AI-powered capabilities such as code assistance, document generation, summarisation, knowledge search, and workflow automation.

- Build backend services, APIs, integrations, and data flows using Python.

- Implement embeddings, vector search, reranking, structured outputs, and tool calling.

- Evaluate AI outputs and improve relevance, accuracy, reliability, latency, and cost efficiency.

- Add logging, monitoring, error handling, fallback mechanisms, and output validation to AI systems.

- Deploy and maintain AI services in cloud environments.

- Collaborate with product, engineering, and business teams to deliver production-ready AI solutions.

🧩 Requirements

- 3+ years of commercial Python development experience.

- Hands-on experience building and deploying LLM-powered applications.

- Practical experience with at least one of the following:

  - RAG systems;

  - AI agents;

  - multi-step LLM workflows.

- Experience developing backend systems, REST APIs, integrations, and data flows.

- Experience with FastAPI, Django, Flask, or another Python backend framework.

- Hands-on experience with LangChain, LangGraph, LlamaIndex, or a similar AI orchestration framework.

- Experience working with OpenAI, Anthropic, Gemini, Llama-based models, or similar technologies.

- Practical understanding of prompt design, structured outputs, tool calling, and output validation.

- Experience with embeddings, vector search, and at least one vector database.

- Understanding of RAG concepts such as chunking, retrieval, reranking, and response generation.

- Experience evaluating and improving LLM output quality.

- Experience with Docker, Git, automated testing, and CI/CD workflows.

- Experience deploying applications to AWS, Azure, GCP, or another cloud platform.

- Understanding of common production AI challenges, including hallucinations, latency, rate limits, reliability, and cost control.

- English level: Upper-Intermediate or higher.
 

🧩 Nice to Have

- Experience with multi-agent systems.

- Experience building custom tools for AI agents.

- Familiarity with MCP servers, clients, or MCP-based integrations.

- Experience with LLM evaluation and observability tools such as LangSmith, Langfuse, Arize Phoenix, or similar.

- Experience with advanced retrieval techniques, hybrid search, or retrieval evaluation.

- Experience working with open-weight models and model-serving solutions.

- Familiarity with AI safety, guardrails, prompt injection protection, and responsible AI practices.

- Experience with Kubernetes or scalable AI service deployment.

- Experience building AI-powered developer tools.

🧩You'll have an opportunity to:

Build production-ready AI applications used by real users.

Work with modern LLM technologies, AI agents, and RAG systems.

Collaborate with experienced international engineering teams.

Gain hands-on experience with rapidly evolving AI frameworks and cloud platforms.

Solve challenging engineering problems and contribute to scalable AI solutions.

Continuously grow your expertise in Generative AI and modern software engineering

Do you dream of creating pixel-perfect, creative designs for international products that actually change people’s lives, rather than “drawing pretty buttons for your portfolio”? 

Want to work on products from top companies that are actually used by millions of people? Then we’re on the same wavelength.

We’re a boutique design studio, Radiant https://dribbble.com/heyradiant , and while others are experiencing a slowdown, we’re growing and taking on new projects. 

We’re looking for a UI/UX Designer who creates great motion, is ready to take ownership, thinks like a product designer, and creates design that sells itself.

Meet our Founder

Hi, I’m Vlad - Principal Product Designer with over 10 years of experience building world-class digital products and design teams. I’ve worked with brands like Wix, DeviantArt, Intel, MoneyLion, Bolt, Subway and many more. I’m looking for an ambitious Middle UI/UX Designer who’s hungry to grow, take ownership, and push boundaries. Not someone who wants “just another job,” but someone who wants to become a true captain in UI/UX design.

Here’s the deal:

👉 As a part of our team you’ll learn faster than in any online course.

👉 You’ll get exposure to projects and challenges way bigger than in 90% of companies in the US, Europe and the Middle East.

👉 You’ll have me as a mentor who has successfully scaled designers just like yourself into Leads, Managers, and even Design Directors in top companies and startups.

I’ve spent 6+ years mentoring design teams, and the people I’ve hired are now leading departments and shaping products used by millions.

BTW, your secret word is «Luck». Use it wisely.

If you’re ready to level up, work on real challenges, and grow like crazy, this is your chance.

💼 What you’ll do:

• Create products from scratch to final design and prototype.
• Illustrate ideas through user flows, storyboards, and site maps.
• Work with our design system and continuously improve it.
• Manage multiple projects simultaneously.
• Create shots and cases for the team’s portfolio on Dribbble.
• Create UI layouts and prototypes.
• Create awesome animations (Figma, Jitter, AE, Lottie).
• Create digital products.
• Identify and solve UX pain points.
• Work with client feedback and bring designs to perfection.

Who we’re looking for:

• You’ve already worked as a UI/UX Designer / Product Designer and have a portfolio (including motion) that proves it.
• Figma is like Spotify for music: you can’t live without it.
• You can quickly build interfaces like LEGO using ready-made components.
• You create wireframes (low-fi) and understand the Atomic Design approach.
• You know iOS and Android guidelines and popular UI/UX patterns.
• You know how to work with AI (Figma AI, Jitter AI, and others) to speed up your work and analyze data, design, and hypotheses.
• You have a strong visual taste and create stylish UI that stands out.
• You can communicate effectively, defend your ideas, and work both as part of a team and fully autonomously.
• You’re ready to work in a dynamic startup environment.

It’s a plus if you have:

• Experience in FinTech, e-commerce, creator services, Web3, or mobile applications.
• Completed design courses.
• Education in design / IT / marketing / related fields.

💰 What we offer:

• 100% remote: work from anywhere in the world.
• 8-hour working day (10:00–18:00 CET).
• Salary $450–$600 (fixed + KPI bonuses) depending on interview results.
• Corporate English and soft-skills training.
• Weekends, vacation, and sick leave on an individual basis.
• Design mentorship.
• Design and animation courses.
• Projects that will help you grow as a specialist.

Hiring process:

1. Fill out a short form to get to know you and review your portfolio.
2. Test task (~5 hours to complete; paid as a full working day for the candidate we sign an offer with).
3. HR interview.
4. Interview with the Founder.

Our Customer is a leading retail technology company specializing in AI-driven pricing optimization solutions for enterprise retailers. The company helps businesses improve profitability and competitiveness through advanced analytics, automation, and intelligent pricing strategies. Their platform combines business intelligence with sophisticated algorithms to support data-informed pricing decisions at scale for global retail organizations.
 

PROJECT

The project focuses on the strategic migration of a large-scale analytical platform from a legacy BigQuery ecosystem to a modern Databricks Lakehouse architecture. The platform processes high-volume retail datasets, machine learning workloads, analytics pipelines, and customer-specific business logic.
As part of the modernization initiative, the engineering team is implementing scalable Spark-based processing, Delta Lake architecture, medallion data layers, and modern governance practices. The role offers an opportunity to work with distributed data processing systems, optimize large-scale workloads, and contribute to the evolution of an enterprise-grade data platform.

Key Technologies: Databricks, Apache Spark, PySpark, Delta Lake, Python, SQL, Airflow, GCP, CI/CD, Unity Catalog

Job Description

• Participate in the migration of a large-scale analytical platform from BigQuery to Databricks
• Design and implement scalable Lakehouse architectures using Databricks and Delta Lake
• Analyze existing ETL / ELT workloads and define migration approaches
• Develop and optimize data pipelines processing large volumes of retail and analytical data
• Implement incremental processing strategies and scalable transformation frameworks
• Build and maintain Spark-based data processing solutions using PySpark
• Design and maintain medallion architecture layers including Bronze, Silver, and Gold
• Implement data governance and security best practices using Unity Catalog
• Collaborate with Data Science, Analytics, Product, and Customer Engineering teams
• Participate in architecture discussions and technical solution design
• Develop reusable data platform components and engineering standards
• Conduct code reviews and contribute to platform reliability and maintainability
• Troubleshoot and optimize complex SQL and Spark workloads
• Support production deployments and platform modernization activities

Qualifications

• 5+ years of professional experience as a Data Engineer
• Strong programming skills in Python and advanced SQL
• Hands-on commercial experience with Databricks
• Strong knowledge of Apache Spark, primarily PySpark
• Experience designing and building modern cloud-based data platforms
• Experience developing ETL / ELT pipelines and large-scale data processing solutions
• Hands-on experience with Delta Lake
• Experience with Spark Declarative Pipelines
• Experience with cluster monitoring, metrics analysis, and performance optimization
• Strong understanding of distributed data processing architectures
• Solid understanding of data warehousing concepts and dimensional modeling
• Experience with Airflow or similar orchestration tools
• Experience optimizing complex analytical SQL workloads
• Experience implementing CI / CD practices for data engineering platforms
• Strong troubleshooting and performance optimization skills
• Ability to work collaboratively in cross-functional international teams
• Upper-Intermediate or higher English level
   

WILL BE A PLUS

• Experience working with GCP cloud services
• Experience with AWS or Azure cloud platforms
• Experience in retail analytics or pricing optimization domains
• Experience supporting machine learning or AI-related data workloads
• Experience with platform modernization and cloud migration initiatives

Additional information

PERSONAL PROFILE

• Strong analytical and problem-solving mindset
• Proactive and ownership-driven approach
• Ability to work independently and collaboratively
• Good communication and stakeholder collaboration skills
• Passion for scalable data engineering and modern data platforms
• Interest in continuous learning and technology innovation

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is developing a platform with a diverse and evolving set of modules and features. The platform includes existing modules that are being improved, as well as large new epics that provide completely new functionality for customers. One concrete example mentioned is the development of a new module for vendor risk management. The product roadmap is heavily focused on automation, intelligent automation, and the integration of AI features.

Key Requirements:
🔹7+ years in Node.js and React, with experience building and operating production services at a meaningful scale;
🔹Microservices Expertise: Proven production experience with microservices architecture;
🔹Database Knowledge: Strong hands-on experience with MongoDB. Strong skills with relational and non-relational databases;
🔹API Development: Experience building and integrating REST APIs;
🔹Strong proficiency with AI coding tools (Claude Code, Copilot) and modern AI-assisted development practices as part of day-to-day work;
🔹Cloud Platforms: Familiarity with AWS or similar providers;
🔹Leadership: Ability to mentor and lead technical projects;
🔹Knowledge of containerization tools (Docker, Kubernetes) is a strong advantage;
🔹Proficient in software design principles and patterns with a motivated, self-driven approach;
🔹English – Upper-Intermediate or higher.

Will be plus:
🔹Experience developing high-scale SaaS solutions;
🔹Experience developing AI Features (Agents, GenAI, Lang etc.);
🔹Deep understanding of CI/CD and QA automation processes;
🔹Academic excellence in Computer Science, Software Engineering, or related fields

What you will do:
🔹 Build & Design: Develop cloud-based platform using cutting-edge technologies such as AWS, microservices, and containerized solutions;
🔹 Architect Solutions: Participate in architectural decisions, research, and design to deliver scalable and robust software;
🔹 Full-Stack Development: Implement backend logic, create intuitive frontends, and integrate with third-party APIs;
🔹 Collaborate: Work closely with product, stakeholders, and internal teams to ensure a seamless, efficient platform;
🔹 Lead & Mentor: Guide junior developers, promote knowledge sharing, and maintain coding standards;
🔹 Optimize: Continuously improve the platform’s efficiency, scalability, and maintainability, while staying updated on industry trends.

Interview stages:
🔹 Interview with recruiter;
🔹 Intro interview;
🔹 Initial interview;
🔹 Technical interview;
🔹 Two short interviews with PM;
🔹 Reference Check;
🔹 Offer Stage.

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Dataforest is looking for a Data Engineer to join an interesting software development project in the field of Cybersecurity. Our client’s platform offers Identity Insights drives real-time, multi-contextual digital forensics to protect new account opening workflows and expose fake accounts already in a customer database.

You'll be a great fit if you have:

- 3+ years of hands on in data engineering;
- 3+ years of commercial experience with Python;
- Advanced experience with SQL DBs (optimisations, monitoring, etc.);
- Advanced experience with PySpark;
- Solid understanding of ETL principles (architecture/ monitoring/ alerting/search and resolve bottlenecks);
- Familiar with AWS infrastructure (boto3, S3 buckets, etc);
- Experience working with large volumes of data;
- Understanding the principles of medallion architecture.

Would be a plus:

- Cassandra/Scylla
- PostgreSQL
- Pandas
- Experience with Kafka and Redis

What you'll do:

- Maintain data processing architecture using Python and PySpark that interacts with ScyllaDB & PostgreSQL.
- Work with Databricks infrastructure to ensure reliability, scalability, and cost efficiency.
- Proactively identify bottlenecks and suggest technical improvements.

We ensure your growth with:

- Working in a fast-growing company;
- Great networking opportunities with international clients, challenging tasks;
- Personal and professional development opportunities;
- Competitive salary fixed in USD;
- Paid vacation and sick leaves;
- Flexible work schedule;
- Friendly working environment with minimal hierarchy;
- Team building activities, corporate events.

We’re looking for a hands-on Head of Growth to lead and scale customer acquisition, performance marketing, funnels, and retention across a fast-growing DTC eCommerce brand.

This is an operator role for someone who can move fast, think strategically, and stay deeply involved in execution. You’ll work closely with founders and creative teams to drive growth through experimentation, optimization, and strong performance systems.
 

What you’ll do:

• Own growth strategy across acquisition, retention, and conversion
• Scale paid social channels including Meta and TikTok
• Launch, test, and optimize campaigns, creatives, funnels, and landing pages
• Improve CRO and customer journey performance across the funnel
• Analyze performance metrics and identify growth opportunities
• Work closely with creative, content, and operations teams
• Build reporting systems and maintain clear visibility into KPIs
• Drive fast experimentation and continuous iteration across channels

Requirements:

• 5–8+ years of experience in growth, performance marketing, or digital marketing
• At least 3+ years working with DTC / eCommerce brands
• Strong hands-on experience with Meta Ads and TikTok Ads
• Deep understanding of performance marketing, funnels, CRO, and retention
• Strong analytical mindset with attention to metrics and data
• Comfortable managing multiple workstreams in a fast-paced environment
• Clear communicator with strong ownership mentality
• Preferably experience working directly inside brands rather than agency-only background
   

Nice to have:

• Experience scaling consumer brands
• Experience with subscription or retention-focused products
• Familiarity with Klaviyo, Shopify, GA4, Triple Whale, or similar tools
• Experience working with creative testing systems and UGC workflows
   

Why join:

• High ownership and direct impact on growth
• Fast-moving team with strong execution culture
• Ability to influence strategy and build systems from scratch
• Remote and flexible work environment

We are hiring on behalf of our client — an American media company with an office in Warsaw. They run a large newsletter operation sending millions of emails a day to cold audiences across multiple verticals. Getting into the inbox is the difference between revenue and noise, and this role owns that outcome end to end.
 

The role

This is a hands-on, deeply technical role for someone who lives and breathes deliverability. You will work directly with the Head of Project and the production manager, and guide marketers on every decision that touches deliverability: infrastructure, authentication, content, segmentation, and sending strategy.

You will not be directing a team to do the work. You will be in the DNS, in the headers, in the seed data, and in the postmaster tools yourself. The two things measured above everything else are inbox placement and the speed at which deliverability issues get resolved.
 

What you will own

• Inbox placement and sender reputation
• Infrastructure and authentication (SPF, DKIM, DMARC, BIMI, IP and domain warming, feedback loops)
• ESP strategy and operations — configuration, optimization, migration
• Cold audience deliverability
• Marketer guidance and enablement
• Monitoring, reporting, and incident response
   

Must-have

• 6+ years in email deliverability as your primary focus — not as a side responsibility
• Hands-on experience operating at 5M+ sends per day
• Proven track record diagnosing and fixing real placement issues at scale
• Experience sending to cold audiences
• Technical fluency with postmaster tools across major mailbox providers
• Deep expertise across major ESPs
• Excellent English, C1 or above
   

Nice to have

• Direct newsletter experience with promotional content at scale
• Experience using AI tools for deliverability work
• Existing relationships with deliverability teams at major ESPs and mailbox providers
• Background in performance marketing, affiliate, or media
   

Compensation and benefits

• Competitive salary + bonuses
• 21 paid vacation days, 14 paid sick days
• Hybrid format, Warsaw office
• Corporate library, team activities

Workload — tbd
Duration — 10 months
Location — Poland

Banking and Finance Job Details Technical 

Requirements: 

10+ years of professional experience across Data Engineering, Data Architecture, Analytics, Artificial Intelligence, or Machine Learning.

- Demonstrated track record of designing and delivering enterprise

-scale data and machine learning platforms within the Microsoft Azure ecosystem. 

- Advanced knowledge of Azure Data Factory, Azure Databricks, Azure Synapse Analytics, Azure Data Lake Storage, Azure Machine Learning, AKS, and Azure DevOps. 

- Practical experience implementing MLOps practices, including ML lifecycle management, model governance, monitoring, and CI/CD automation. 

- Strong understanding of machine learning workflows, feature engineering, model deployment, and responsible AI principles. 

- Solid expertise in data governance, security, regulatory compliance, and metadata management. 

- Proficiency in Python and SQL, with strong hands-on programming capabilities. 

- Experience working with containerization and orchestration technologies such as Docker and Kubernetes. 

- Strong leadership, communication, collaboration, and stakeholder management skills. 

- Fluent business and technical English Required 

Technical Skills: 

- Data Engineering 

- Data analysis 

- AI - Machine learning 

- Microsoft Azure 

- Azure Data Factory 

- Azure Devops 

- Microsoft Azure Synapse 

- CI/CD - Python - SQL - Docker 

- Kubernetes 

Main Responsibilities: 

- Define and design end-to-end data and machine learning architectures using Microsoft Azure.

 - Lead the design and implementation of modern data platforms encompassing data lakes, data warehouses, real-time streaming, and analytics capabilities. 

- Develop scalable ML pipelines covering data ingestion, model training, deployment, monitoring, and automated retraining. 

- Establish MLOps practices, CI/CD standards, governance frameworks, and best practices across data and AI environments. 

- Drive data quality, security, compliance, reliability, and operational excellence across the platform. 

- Partner with business and technical stakeholders to translate business needs into robust, scalable technology solutions. 

- Provide architectural direction, technical leadership, and mentorship to engineering teams. 

- Assess emerging technologies and contribute to the strategic evolution and roadmap of data and AI capabilities. 

About the project Greenfield project Selected specialist will join a greenfield initiative dedicated to developing a next-generation, cloud-native digital banking platform. The program focuses on creating a scalable, modular, API-first, event-driven, and AI-powered ecosystem designed to enable real-time operations, accelerate product innovation, and support sustainable business growth. 

The platform leverages modern Azure services, advanced data technologies, and machine learning capabilities to drive digital transformation at scale. Important: If a candidate successfully completes the recruitment process, they will be required to undergo an identification verification prior to employment. 

This process will include, but is not limited to, a one-time online inspection of a government-issued photo ID, such as a valid ID card, driver’s license, or passport. Client has the right to require MTA (Mandatory Time Away) for up to 10 days per year (usually in December)