Jobs at Djinni

About the project
 

US-founded media company operating email newsletters at scale – millions of subscribers across finance, health, and business verticals. Small engineering team, flat structure, direct ownership, fast iteration. No layers of approval, no large org to navigate.

You'll own the AI layer of the automation platform alongside a counterpart engineer who handles integration and infrastructure.
 

What you'll work on

• AI-driven content generation and management workflows at production scale
• Agent systems coordinating multi-step operational tasks: content, QA, validation, reporting
• RAG pipelines over internal knowledge bases and operational data
• Prompt architectures designed for reliability, cost control, and measurable output quality
• Evaluation and regression testing for LLM systems — "it looked fine when I tested it" isn't good enough
   

Real production systems, not demos. The work removes hours of manual operational work daily and needs to be reliable enough that people actually trust it.
 

Requirements

• 6+ years of development experience
• 4+ years of production Python
• 2+ years shipping production systems with LLMs and agents
• Solid understanding of what happens underneath the frameworks: tokenization, context windows, function calling, when RAG helps and when it doesn't
• Hands-on with agent orchestration: LangChain, LangGraph, MCP, or equivalent
• Clean, maintainable Python – frameworks support your thinking, not replace it
   

Tech stack

Python · FastAPI · PostgreSQL · LLM APIs (OpenAI, Anthropic) · LangChain / LangGraph / MCP · vector databases · Playwright · Docker · proxy infrastructure
 

Conditions

• B2B contract, full-time
• Warsaw office (onsite preferred, remote considered)
• Direct collaboration with technical PM and small senior team
• Fast-moving environment: ambiguity, shifting priorities, growing scope

🎯 Mission of the Role

The primary mission of this role is to design highly effective user experiences, logic, and interfaces for high‑conversion funnels. All design decisions must be grounded in quantitative and qualitative research of user behavior and sentiment, aimed at reducing cognitive load, removing barriers in the user journey, and driving systematic conversion growth.

🧠 Required Skills

• Proven ability to formulate and defend professional UX/UI decisions based on quantitative and qualitative user data, not subjective preferences.
• At least 2 years of experience as a UI/UX Designer.
• Demonstrable UI design skills with a strong portfolio.
• Strong knowledge of typography, color theory, composition, and modern UI trends.
• Experience working with eCommerce project.
• Familiarity with design requirements for SaaS products and mobile apps (preferred).
• Data‑driven mindset with hands‑on experience in A/B testing and collaboration with analysts.

• Intermediate / Upper‑intermediate English.

   

🌟 Nice to Have

• Experience conducting qualitative UX research to identify conversion growth opportunities and optimal IX/UI solutions.
• Background in data‑driven teams, working closely with analysts to obtain necessary data to create strong UX/UI solutions for improving funnel performance.
•  

🚀 What We Offer

• Direct Impact on Millions: your work will directly improve the experience of around 50M monthly users across multiple clients. We partner with successful and ethical businesses, including eCommerce stores, SaaS products, mobile/web applications, and lead generation funnels.
• Ownership and Freedom: you make UI decisions independently, validated through A/B testing, without relying on client “taste” or subjective opinions.
• 100% Data‑Driven Culture: every hypothesis is tested and validated with statistically significant data. We combine insights and best practices with data to deliver the highest‑quality design outcomes.
•  

📊 Responsibilities

• Identify UX friction points and conversion opportunities using user research and analytics.
• Design user interfaces and user flows that improve conversion and other key business metrics.
• Create UI variations for A/B tests and optimization experiments based on validated hypotheses.
• Collaborate with Growth PMs, CRO Strategist, UX Researcher, Analyst, Data Engineer, Developer, and QA Engineer throughout the experimentation process.
• Present and defend design decisions using research, data, and UX best practices.
• Iterate on designs based on experiment results and user behavior insights.

Position Overview

NYC Glass & Window Repair is looking for a motivated, organized, and results-driven Sales Representative to manage incoming leads, communicate with residential and commercial customers, prepare estimates, follow up on opportunities, and convert inquiries into booked projects.

The ideal candidate is comfortable speaking with customers, understands consultative sales, follows up consistently, and takes ownership of every lead from the initial inquiry through closing and handoff to the operations team.

Experience in windows, doors, glass, construction, home improvement, or building services is highly preferred but not required if the candidate is willing and able to learn the technical aspects of our services.

Key Responsibilities

• Respond quickly to new leads received by phone, email, website, text, and other channels.
• Speak with customers to understand the problem, project scope, budget, timeline, and expectations.
• Review customer photos, videos, measurements, drawings, and project documentation.
• Determine whether the project can be quoted remotely or requires an on-site assessment.
• Schedule site visits and coordinate with estimators when necessary.
• Prepare and send professional estimates and proposals.
• Explain proposed solutions, materials, hardware, glass options, lead times, warranties, and pricing to customers.
• Follow up consistently on all open estimates and sales opportunities.
• Negotiate professionally while protecting company margins.
• Convert qualified leads into signed/approved projects and collect required deposits.
• Upsell and cross-sell appropriate services when they genuinely benefit the customer.
• Maintain accurate customer information, notes, estimates, follow-up dates, and sales stages in the CRM system.
• Re-engage previous customers and older leads when appropriate.
• Coordinate sold projects with scheduling, purchasing, project management, and installation teams.
• Maintain communication with customers until the project has been properly handed off.
• Develop long-term relationships with property managers, general contractors, architects, designers, building owners, and repeat customers.
• Meet individual sales, revenue, conversion-rate, and follow-up KPIs.

Services the Sales Representative Will Sell

The representative will be trained to sell services including window repair and replacement, insulated glass (IGU) replacement, commercial and residential glass replacement, door repair and installation, storefront glass and aluminum systems, shower enclosures, custom mirrors, glass partitions, railings, historical window restoration, window screens, smart glass and window film, and specialty glazing projects.

Sales Process

The Sales Representative is expected to take ownership of the sales pipeline:

New Lead → Qualification → Site Visit/Estimate → Proposal → Follow-Up → Negotiation → Closing → Deposit → Operations Handoff

A lead should never be left without a clearly documented next action or follow-up date.

Requirements

The ideal candidate should have excellent verbal and written English, strong communication and negotiation skills, and the confidence to speak with both homeowners and commercial clients.

The candidate must be highly organized, comfortable working with CRM systems, able to manage multiple opportunities simultaneously, and persistent with follow-ups without being overly aggressive.

Basic mathematical skills are required for measurements, quantities, pricing, percentages, and margins. The candidate must also be comfortable learning technical terminology related to glass, windows, doors, hardware, framing systems, and construction.

Preferred Experience

Previous experience in construction sales, window and door sales, glass and glazing, home improvement, building materials, property services, or B2B sales is a strong advantage.

Experience dealing with property managers, general contractors, architects, designers, management companies, and commercial clients is also highly desirable.

Key Performance Indicators (KPIs)

Performance should be evaluated primarily on sales revenue, gross profit/margin, lead-to-sale conversion rate, estimate-to-sale conversion rate, speed of response to new leads, follow-up completion rate, average project value, CRM accuracy, and repeat/referral business.

What We Are Looking For

We want someone who is sales-driven but not pushy. The goal is not simply to give customers a price—it is to understand what they need, recommend the correct solution, explain why it is the right solution, build trust, and close the project.

The right candidate should think:

“Every qualified lead needs a clear next step until the customer buys, declines, or the opportunity is formally closed.”

NYC Glass & Window Repair is looking for a creative, energetic, and highly organized Content Creator to develop engaging social media content showcasing our projects, team, services, and day-to-day operations.

The ideal candidate understands how to turn real construction and service projects into compelling Instagram Reels, TikTok videos, YouTube Shorts, Facebook content, and other short-form videos that generate attention, engagement, brand awareness, and ultimately new customers.

This position requires more than simply recording videos. We are looking for someone who understands storytelling, hooks, trends, editing, captions, and social media algorithms and can consistently identify opportunities for interesting content.

Key Responsibilities

• Visit job sites and create photo and video content of ongoing and completed projects.
• Film before-and-after transformations, installations, repairs, technician processes, and finished results.
• Create and edit short-form videos for Instagram Reels, TikTok, YouTube Shorts, Facebook, and other platforms.
• Develop strong hooks and concepts designed to capture attention within the first few seconds.
• Turn technical projects such as window repair, glass replacement, storefront installation, shower enclosures, glass partitions, and door installations into content that is easy and interesting for customers to understand.
• Interview technicians, project managers, customers, and other team members when appropriate.
• Create educational content answering common customer questions.
• Write engaging captions, titles, descriptions, and calls to action.
• Follow current social media trends and adapt relevant formats to the company.
• Maintain a consistent posting and content-production schedule.
• Organize raw footage, completed videos, photographs, and other digital assets.
• Coordinate with the office, sales team, and technicians to identify upcoming projects worth filming.
• Repurpose one project into multiple pieces of content for different platforms.
• Monitor content performance and identify which topics, hooks, formats, and videos generate the strongest engagement and leads.
• Develop new creative ideas instead of waiting for detailed instructions for every video.
• Maintain professional brand standards across all published content.

Content We Want to Produce

The creator should be comfortable developing content such as before-and-after videos, emergency glass repairs, broken-to-restored transformations, luxury shower enclosures, storefront installations, historical window restoration, large custom glass projects, educational “Did you know?” videos, common window problems, behind-the-scenes footage, technician POV videos, customer testimonials, project walkthroughs, and visually satisfying installation videos.

Requirements

The ideal candidate should have proven experience creating social media content and strong skills in video shooting and editing. Experience with CapCut, Adobe Premiere Pro, Final Cut Pro, DaVinci Resolve, or similar software is preferred. The candidate should understand Instagram, TikTok, YouTube Shorts, and current short-form content trends and be able to create professional content using both smartphones and cameras.

Strong English communication, attention to detail, reliability, creativity, and the ability to work independently are important. Experience creating content for construction, home improvement, architecture, real estate, interior design, or service businesses is a major advantage.

What Success Looks Like

Success in this position will be measured by consistent production of high-quality content, growth in organic reach and engagement, increased views and followers, development of recognizable company branding, and—most importantly—social media inquiries and leads that convert into customers.

Preferred Candidate

We are looking for someone who sees a completed glass installation and immediately thinks:

“How can I turn this into a video people will want to watch?”

The right person should be creative, proactive, comfortable visiting active job sites, and capable of taking ownership of the content-production process from idea → filming → editing → publishing → performance analysis.

At Noomo Agency, we're seeking a Senior UI/UX Designer (full-time or part-time) with excellent visual skills and extensive experience in website design.

Position: Part-time or Full-time (both options are welcome)

Experience Required: Minimum 10 years

What matters to us:
→ Strong visual design — you care about every detail, from typography to composition
→ Experience with 3D websites and interactive web experiences
→ Clear communication — you can present your thinking and bring others along
→ Remote, self-directed, and collaborative by nature

Must-Have

• Strong typography and composition skills
• Experience working with a large enterprise
• Strong communication skills
• Being a team player
• Thinking outside the box

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets.

We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Trusted by 200+ companies, managing $150M+ in ad spend.

Scale faster. Grow smarter.

We’re looking for a Marketing Intern - someone who can turn the ordinary into something fresh, notice the little things, catch trends early, and add a personal twist where it matters.

If you feel at home in the digital space, enjoy experimenting, adapt easily to change, and want to grow in marketing - we’d love to meet you.

What You Will Do:

• Analyze the performance of advertising creatives and identify areas for improvement.
• Search for source materials (images, music, videos) to support the creation of ad content.
• Collaborate with marketers and the creative team to develop innovative advertising materials.
• Work closely with the compliance team to ensure all creatives meet the required standards.
• Set tasks in the internal company system and CRM, providing clear and detailed technical specifications.
• Stay up to date with market trends to find inspiration and bring new ideas into creative development.

Requirements:

• English level B1 or higher.
• Understanding of what makes up a creative (fonts, music, video, background, etc.).
• Willingness to learn and grow.
• Attention to detail.
• Analytical thinking skills.
• Ability to work effectively as part of a team.

We Offer:

• Remote work
• Company-provided laptop and all necessary equipment
• Paid vacation and sick leaves
• Full training from scratch and support at every stage.
• Open feedback and transparent direct communication

Required languages

English

B1 - Intermediate

Ukrainian

Native

About SBC Digital

SBC Performance is a digital marketing and ad-tech ecosystem partnering with the world’s top ad platforms to drive performance. We help brands scale globally through high-converting creative marketing solutions and smart campaign optimization. We’re proud to be elite partners with TikTok (Top 1 globally), Meta (Top 10), and Google.

With over 250+ professionals based in the US, Czech Republic, Poland, Ukraine, and other locations, we are building a fast-moving, data-driven performance culture.

Privacy Notice about your data: https://sbc-performance.com/notice-privacy-for-recruitment/

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets. We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Trusted by 200+ companies, managing $150M+ in ad spend.

Scale faster. Grow smarter.

Now, we’re looking for a Full Stack Engineer to join our AdTech product team. Someone passionate about building scalable, data-driven systems that power performance marketing automation and analytics.

Key Responsibilities:

• Design, build, and maintain frontend and backend services for the internal AdTech platform.
• Develop Angular (v12+) applications with TypeScript, using reactive patterns (RxJS, Angular Material, reactive forms).
• Implement and optimize state management and change detection for high-performance UI.
• Build and maintain Node.js microservices with TypeScript and RESTful APIs.
• Work with PostgreSQL (TypeORM) and Firestore (NoSQL) for data modeling and storage.
• Implement asynchronous patterns, error handling, and background data processing.
• Integrate with Google Cloud Platform (GCP): Cloud Functions, Firestore, Cloud Storage, and Secret Manager.
• Utilize Redis caching, message queues (RabbitMQ / Pub/Sub), and efficient pagination/filtering for large datasets.
• Collaborate with product, analytics, and QA teams to deliver robust, scalable AdTech solutions.

Requirements:

• 3+ years of experience as a Full Stack Engineer
• Experience with Node.js, Angular (v12+), and TypeScript in production environments
• Strong knowledge of RxJS, Angular Material, and reactive forms
• Experience with state management and change detection optimization
• Experience with microservices architecture and RESTful APIs
• Proficiency with PostgreSQL (TypeORM) and Firestore (NoSQL)
• Understanding of asynchronous patterns and error handling
• Experience deploying and managing Cloud Functions (triggers, logs, monitoring)
• Knowledge of Firestore queries, indexing, and data modeling
• Familiarity with Cloud Storage and Secret Manager
• Docker basics for local development and testing
• Experience with message queues (RabbitMQ or Pub/Sub)
• Redis caching and session management
• Handling large datasets (pagination, filtering, sorting)

Nice to Have

• Experience with ad platform APIs (TikTok Business API, Facebook Graph API, Google Ads API)
• Working knowledge of BigQuery for analytics and data aggregation
• Experience building worker pools and parallel processing pipelines
• Familiarity with CI/CD pipelines and deployment automation
• Understanding of AdTech concepts — campaigns, budgets, pixels, conversions
• Experience with high-volume, real-time data systems

What We Offer

• Hybrid job in Prague/Warsaw or remote
• Competitive compensation
• Flexible working hours: we start our operation day between 9:00 — 11:00 CET
• All necessary equipment
• Paid vacation and sick leaves
• Educational support: reimbursement of certification, training, and a knowledge-sharing atmosphere
• Company events and multiple internal activities
• Open feedback and transparent direct communication

As a QA Automation Engineer, you will be responsible for building and owning the company's automated quality strategy from the ground up. This includes developing end-to-end test automation, performance testing, AI evaluation infrastructure, and validation processes while integrating everything into the CI/CD pipeline.

You will work closely with the engineering team to ensure the platform remains reliable, scalable, and compliant with industry standards.

Responsibilities

• Design, develop, and maintain an end-to-end automation framework using Playwright.
• Build automated UI, API, integration, and backend tests.
• Create AI evaluation infrastructure, including regression testing and validation for AI-powered features.
• Design and execute performance, load, and stress testing.
• Develop Computer System Validation (CSV) documentation, including IQ/OQ/PQ protocols and traceability matrices.
• Build and maintain reliable test environments and test data.
• Integrate automated testing into CI/CD pipelines and improve release quality.
• Collaborate closely with software engineers throughout the development lifecycle.
• Readiness to work from 16:00 till 01:00 in order to have an optimal overlap of work hours with USA based teams.

Required Qualifications

• 6+ years of experience in QA Automation or Software Development in Test (SDET).
• Strong hands-on experience with Playwright (or another modern browser automation framework).
• Experience integrating automated testing into CI/CD pipelines.
• Strong programming skills in TypeScript, Python, or C#.
• Experience with performance testing tools such as k6, Locust, JMeter, or Gatling.
• Experience working in regulated environments with validation documentation (21 CFR Part 11, ISO 13485, or GAMP 5).
• Strong SQL skills (PostgreSQL).
• Experience using AI-assisted development tools such as Claude, Cursor, Claude Code, Codex, or similar.
• Bachelor's degree in Computer Science, Engineering, Mathematics, Physics, or equivalent practical experience.

Nice to Have

• Startup experience.
• Experience testing enterprise SaaS products.
• API contract testing (Pact, OpenAPI).
• Experience with cloud and on-premise integrations.
• Manufacturing, ERP, MES, or CRM domain experience.
• Accessibility and cross-browser testing experience.

Who we are:

Selesa offers IT outsourcing, specialist out-staffing, and project management services to enhance business operations. We focus on providing skilled professionals for IT needs, including development, security consulting, and business development. Selesa also manages sales, account management, and human resources to support company growth. Our services are known for efficiency, quality, and strong communication, making us a trusted partner for businesses looking to streamline and secure their IT infrastructure. Originated in Vilnius, Lithuania, we cater to global clients.

Who we are looking for:

We are seeking an Account & Sales Manager with strong initiative, negotiation, and communication skills to act as a key link between the organization and its external stakeholders. The role will focus on building and maintaining long-term relationships with clients (platforms) and partners (game providers), while identifying new business opportunities and supporting the growth of existing partnerships.

This position combines account management and sales responsibilities, requiring a proactive, relationship-driven individual who can effectively manage client needs, negotiate commercial terms, and contribute to the company's overall business development.

Responsibilities:

• Support business growth through proactive customer engagement and relationship management.
• Build and maintain strong, professional relationships with clients to drive account growth and ensure high levels of client satisfaction.
• Manage B2B client relationships and negotiate contracts and commercial agreements.
• Facilitate communication across cross-functional teams to ensure alignment on business objectives and smooth execution.
• Maintain regular contact with existing clients, understand their needs, and identify opportunities to strengthen and grow partnerships.
• Develop and propose new campaign ideas and initiatives in collaboration with clients and partners.
• Provide ongoing support to clients and partners via email, online presentations, screen sharing, Teams and other communication channels.
• Ensure the timely and successful delivery of solutions in line with customer needs and objectives.
• Clearly communicate the progress of monthly and quarterly initiatives to both internal and external stakeholders.
• Forecast, monitor, and track key account metrics and performance.
• Monitor client satisfaction and provide exceptional day-to-day service to maintain strong, long-term relationships.
• Monitor and analyze ongoing processes to identify areas for improvement and ensure operational efficiency.
• Work closely with the Sales team to onboard and integrate new clients and support the development and growth of existing client relationships.

Requirements

• Proven experience in Account Management, Sales, or Business Development, preferably within the iGaming, gambling, online casino industry.
• iGaming experience is a must; 
• Strong interpersonal and relationship-building skills, with the ability to engage effectively with clients, partners, and external stakeholders.
• Proven experience managing B2B clients and building long-term business relationships.
• Strong negotiation, communication, and presentation skills.
• Experience managing or contributing to cross-functional projects and coordinating with internal teams.
• Prior experience preparing and supporting executive-level presentations, proposals, and business meetings.
• Experience with CRM tools and project management platforms.
• Strong customer service skills with a proactive and solution-oriented approach.
• Excellent written and spoken English.
• Strong attention to detail and the ability to work effectively as part of a team.
• Ability to prioritize tasks, meet deadlines, and perform effectively in a fast-paced, dynamic environment.

What we offer:

• Fully remote position with a flexible schedule
• Long-term opportunity with potential for financial and career advancement
• Supportive and positive work culture, collaborating with like-minded teammates

The recruitment process will include a three-day pre-trial period, during which we will test your skills. This period is paid. After successfully completing the pre-trial, an interview will follow. If the interview is successful, the next step will be an offer.

Screening questions:

1. Please explain to us your level of spoken/written English. Just rank it from 1 to 10, where 10 means a Native Speaker; 8-9 means a Near Native Speaker; 6-7 means Fluent Speaker; under 6 any further levels.
2. Please share examples of your previous experience or portfolio that demonstrate your account management skills, particularly within iGaming, gambling technology, or B2B tech.
3. What are your Monthly salary expectations for a long-term, full-time position (if we consider 40 hours a week)?
4. What is your notice period and how soon can you join ? 

We're looking for a 3D Generalist to join our team and create environment assets for our mobile open-world game — buildings, locations, props, and territories that shape the game world.

You'll work closely with the lead artist and technical artists, producing optimized assets with clean topology and strong performance on mobile devices.
 

What You'll Do

• Create game-ready 3D environment assets: buildings, territory objects, and props for an open world
• Model both hard-surface and organic objects (architecture, landscape elements, decor)
• Texture assets using a PBR workflow for Unity
• Assemble and dress scenes/locations from finished assets (level dressing)
• Optimize assets for mobile platforms (LOD, topology, UVs, texture size)
• Work with modular systems (modular building kits, kit-bashing)
   

What We Expect

• Confident skills in a 3D package
• Understanding of hard-surface modeling and architectural forms
• Knowledge of PBR texturing and baking
• Experience optimizing assets for mobile platforms
• Understanding of modular approaches to environment building
• Attention to detail and ability to work independently
• Understanding of game production pipelines
   

Nice to Have

• Experience texturing environments
• Experience building open game worlds or large-scale locations
• Interest in procedural environment generation tools
• Experience with vegetation/landscape systems

ElevateOS integrates with 20+ smart-device ecosystems — keyless entry, locks, cameras, switches, thermostats. Every integration is validated against physical hardware before release. We're hiring the person who owns that entire pipeline: the device lab itself, the test environments and servers behind it, and the integration testing that runs on top.

Who we need: someone technical who can host and run a physical device lab from their home in Kraków — smart locks, cameras, access-control hardware — and also handle the server/networking side so our developers can remotely connect to and test against that hardware.

You'll build and run your own hardware lab — smart locks, cameras, access control systems, and the servers and test environments behind them. Every device integration we ship passes through your hands before it reaches production, and you'll work directly with the development team and CTO with real autonomy: you decide how the lab, its environments, and its tooling evolve. The role spans mobile, backend, networking, and physical hardware — a breadth almost no single position offers. If you're the type who runs a home lab for fun, this is that, with a company budget behind it.

About ElevateOS

ElevateOS has been improving the resident experience for over seven years. We built a single, all-in-one platform that lets property managers and resident staff work together, replacing multiple confusing apps with one intuitive solution. The product is stable, growing, and US-based. Our stack is JavaScript end to end: React, Node.js, and React Native.

What you'll own:

- The physical device lab — smart locks, access-control hardware, cameras, switches — hosted at your home in Kraków. Setup, configuration, firmware updates, troubleshooting, and inventory.

- Test environments and servers — install, configure, and maintain the local and staging environments our integrations run against; adjust configurations live during debugging sessions with developers.

- Lab networking — device connectivity (Wi-Fi, BLE, Zigbee/Z-Wave), router and network configuration, and remote access so the dev team can reach devices and environments from anywhere.

- Integration testing — install iOS/Android builds, run end-to-end tests against physical devices, API testing, reproduce and isolate bugs, verify fixes with the team.

- Documentation — device matrix, environment runbooks, test protocols, and findings.

Requirements:

- Based in or near Kraków — the hardware lives with you; the work is otherwise remote.

- Solid Linux and networking fundamentals: comfortable in a terminal with SSH and logs, and with DNS/DHCP/port-level debugging.

- Experience setting up and maintaining servers or local test environments (Node.js ecosystem and Docker familiarity as a plus).

- Hands-on comfort with hardware, physical devices and space at home to host the lab.

- Able to read code (JavaScript/TypeScript), work with APIs (curl, Postman), and read mobile logs.

- Commercial experience (2+y) in a technical role — engineering, QA, sysadmin/devops, technical support.

- Strong troubleshooting instincts and good English communication.

Nice to have:

Exposure to React Native, Kotlin, or Swift; mobile SDK integrations.

Familiarity with smart locks, access control, or keyless entry ecosystems.

MQTT, webhooks, RTSP/video streaming.

Test automation experience; CI/CD (GitHub Actions).

Practical details:

Company hardware is currently distributed across two locations in Kraków and will be consolidated with you during onboarding.

Occasional in-person device handoffs in Kraków.

SignalsAPI monitors 290+ sources to detect hiring signals — job postings, funding rounds, company news — and turns them into warm leads for recruitment and staffing agencies. Our customers are agency owners and founders, mostly UK and US.

We're hiring someone to make SignalsAPI a familiar name inside that world on LinkedIn.

The role in one sentence

Spend time every day where recruitment agency owners spend theirs, and become a face they recognise — before anyone ever tries to sell them anything.

What you'll actually do

• Map the recruitment-agency world on LinkedIn: who the influential voices are, which posts the niche actually reads, where the arguments happen.
• Comment on those posts. Daily. With something worth reading — a real reaction, a question, a counterpoint. Not "Great post!"
• Connect with agency owners, staffing founders, and the people around them.
• Notice what's landing — which comments get replies, which topics pull people in — and tell us weekly.

What this job is not

We want to be very clear, because this attracts the wrong applicants otherwise:

• No pitching. You will never send a sales message.
• No sequences, no campaigns, no Expandi / Apollo / Lemlist. Nothing automated.
• No meeting quota. Nobody is counting your booked calls, because you won't be booking any.

If your strength is sending 500 messages a week, this will make you miserable and you'll be bad at it. That's a different job at a different company.

You're a fit if

• Your written English is genuinely fluent. Everything you write here is public, permanent, and read by the people we sell to. This is the hard requirement.
• You've run LinkedIn for a B2B company, or built a following of your own on it.
• You have taste. You can read a post and tell the difference between a real insight and a platitude — and you can say why.
• You're comfortable spending your first month learning an industry you don't know yet.

Bonus, not required

• You've worked in recruiting or staffing — agency-side especially. You'd already speak the language.
• Community management background: Discord, Slack, forums, anywhere people actually talk.
• You post on LinkedIn yourself and have opinions about what works there.

Probably not a fit if

• Your experience is mostly Instagram/TikTok, reels and visual brand content. Different craft, and we'd both find out the hard way.
• You've worked in engagement pods or comment automation. The whole point is that this is real.

Practicalities

• Fully remote, part-time — around 4 hours a day, but every day. Consistency matters far more than hours here.
• Some overlap with UK working hours, since that's when the feed is alive.
• Long-term. This role takes 6–8 weeks to start showing results and we know that.

About your cover letter

Please don't summarise your CV — we've read it. Tell us instead about one industry, scene or community you came into from the outside, and how you got to the point where people there took you seriously. That's the actual job, so it's the thing we most want to hear about.

About us

PlayVersa is a modern online gaming and crypto betting platform built for fast, immersive, and rewarding gameplay. Inspired by the next generation of crypto casinos, PlayVersa brings together casino games, live gaming, slots, and digital-asset betting in one streamlined experience.

Players can enjoy a wide range of games while using supported cryptocurrencies for convenient deposits and withdrawals. The platform is designed around speed, simplicity, security, and an engaging user experience across desktop and mobile devices.

From quick casino sessions to live dealer games and crypto-based betting, PlayVersa aims to create an entertaining environment for players who want modern gaming with the flexibility of digital currencies.

Play. Bet. Win. Welcome to PlayVersa.

We're a small, senior team that ships. You'll have real ownership from day one.

The role

We're hiring a Senior Full-Stack Developer to help take our web games to the next level — building new gameplay, tightening performance, and growing the services behind accounts, scores, and matchmaking.

You'll work across the whole stack: the React front end, the HTML5 canvas game engine, and the Node/Express + SQLite backend that powers it all.

What you'll do

- Design and build new game features and polished, responsive UI in React + TailwindCSS.

- Write and optimize HTML5 Canvas game logic — physics, input, rendering, and a smooth 60 fps loop.

- Build and maintain backend services: REST APIs, authentication, persistence, leaderboards.

- Profile and fix performance bottlenecks across load time and interaction (large lists, render cost, network waterfalls).

- Own features end-to-end — from spec, through implementation and testing, to release.

- Raise the bar on code quality through reviews, sensible architecture, and pragmatic tests.

Tech stack

You don't need every item, but you should be strong in most of it:

- Front end: React 18 (hooks, context), Vite, TailwindCSS, modern JavaScript (ES2022+)

- Game/graphics: HTML5 Canvas 2D, `requestAnimationFrame` game loops, basic 2D physics

- Back end: Node.js, Express, REST API design

- Data & auth: SQLite (or similar), password hashing/sessions, secure auth flows

- Tooling: Git, npm, browser dev tools / profiling

What we're looking for

- 5+ years building production web applications, with real front-end depth.

- Fluency in React and modern JavaScript; you understand rendering, state, and re-render cost.

- Experience building and consuming HTTP APIs and working with a relational store.

- A track record of diagnosing performance problems with data, not guesswork.

- Care for UX and visual polish — you notice jank and fix it.

- Clear written communication and the self-direction to own work in a small team.

Nice to have

- Shipped a game or interactive/animation-heavy app on the web.

- Canvas/WebGL, audio, or real-time (WebSocket) experience.

- Security mindset for auth, sessions, and input validation.

- TypeScript.

What we offer

- [Competitive salary + equity/bonus]

- [Remote-first / flexible hours]

- [Health, learning budget, hardware, PTO — fill in]

- Small team, high ownership, real players using what you ship.

Take-home assignment

Strong candidates are invited to a paid / time-boxed take-home (~[3–4] hours)

built on a slimmed-down version of our real Moto Stunt Riders codebase

(React + Vite + Tailwind on the front end; Node/Express + SQLite on the back end).

You'll receive the repository with a short TASK.md. Typical assignments include:

1. Performance — The garage screen renders thousands of bikes and the search / sort / favorite interactions lag. Find *why* (measure, don't guess) and make it smooth without changing behavior.

2. Feature — Add a self-contained feature end-to-end (e.g. a new gameplay  mechanic, an API endpoint + UI, or an auth improvement) that fits the existing  architecture.

We evaluate:

- Correctness & UX — does it work, and does it feel good to use?

- Problem-solving — for perf tasks, did you *measure* the real bottleneck?

- Code quality — clear, consistent with the codebase, appropriately tested.

- Communication — a short write-up of your approach, trade-offs, and what you'd

  do next with more time. A before/after measurement (numbers or a short clip) is a plus.

Please keep changes scoped to the task, and don't rewrite unrelated code.

How to apply

Send your CV / portfolio and a few lines on a web project you're proud of. GitHub profile is accepted.
We welcome applicants of all backgrounds and don't discriminate on any protected characteristic.

Contact:  brandon[@]playversa[.]org
Tg:  [@] brandonmedia

Getstream is a music company helping independent artists develop their projects and promote their music.

We are looking for someone with strong English who wants to build a career in sales and work directly with artists from different countries.

What you will do

At the beginning, you will:

• communicate with artists in English via Instagram;
• respond quickly to new messages;
• identify artists’ needs;
• introduce Jetstream’s services;
• engage potential clients and book calls;
• keep communication records up to date.

As you develop in the role, you will start joining and later leading calls with artists, presenting the company’s services, handling objections, and closing sales.

Who we are looking for

• English level B2 or higher;
• a strong interest in developing a career in sales;
• readiness to communicate with many people and handle rejection;
• clear, natural, and persuasive written communication;
• availability to stay connected for 8–16 hours per day according to an agreed schedule;
• interest in music, Instagram, TikTok, and working with artists;
• reliability, self-organisation, and a stable internet connection.

Previous experience in sales, customer support, hospitality, SMM, or communication with international clients is an advantage but is not required.
 

What we offer

• fully remote work;
• starting compensation from $250 per month;
• a transparent grade system with clear development criteria;
• an opportunity to progress to a level paying up to $1,000 per month within the first year, depending on performance and responsibilities;
• training in artist communication and selling the company’s services;
• progression from written outreach to sales calls and independently closing deals;
• an opportunity to start an international sales career in the music industry.