Jobs at Djinni

Product Engineer

AI-Enabled Products · Full-Stack · End-to-End Ownership
 Fully Remote (Europe preferred)
 Independent Contractor · 50–70% initially (ramping to full-time within 6–12 months)
 Reports to Founder & CEO

You’re Not a Cog. You’re the Engine.

Most engineering roles give you a ticket queue. This one gives you a product.

At Informed Decisions, you’ll take real ownership over how a meaningful B2B SaaS platform gets built- from architectural decisions to AI integrations to what ships on Friday. You’ll work directly with the founder, with real influence over technical direction, and you’ll see the impact of your work in how organizations hire and how people’s careers unfold.

If you’ve been waiting for a role where your judgment actually matters, this is it.

What We’re Building

Hiring is broken in ways most companies don’t even measure. Informed Decisions addresses this by combining IO psychology with data-driven product design- including statistical models, analytics, and AI-enabled capabilities- to make interviews fairer, more consistent, and truly predictive of on-the-job success.

We help organizations improve interviewer skills, reduce bias, and connect hiring decisions to real post-hire outcomes. The product is live, the problem is real, and the work is technically interesting.

What You’ll Own

This is a full-stack product engineering role. You’ll work across the system with .NET and Python on the backend, APIs and integrations, AWS infrastructure, and AI-enabled workflows embedded into real product features.

Your first major responsibility is taking full ownership of a live, production product- from database and backend services through APIs and application layers- currently developed with an external vendor. This includes deeply understanding what’s been built, identifying what needs to evolve, and establishing the engineering practices and standards that will carry the platform forward.

This is an active system with real users, real data, and real consequences. We’re looking for someone who can navigate this transition with technical rigor, sound judgment, and a strong sense of ownership.

On the product side, you’ll design and ship features end to end. That means writing the code, making architectural calls, defining what “done” looks like, and owning production quality.

On the AI side, you’ll build workflows that integrate LLMs and AI services into the product in ways that are reliable, observable, and grounded in measurable hiring outcomes.

Beyond the core platform, you’ll make judgment calls about when a customer need belongs inside the platform and when a standalone tool or application is the right answer- and then you’ll build it.

Engagement Model

This role starts as an independent contractor engagement, scoped at approximately 50–70% capacity.

The intent is to increase scope and ownership over time, with a planned ramp toward full-time (100%) involvement within 6–12 months, based on mutual fit, impact, and company needs.

You’ll Thrive Here If…

• You’ve shipped production systems and can show your work through code, products, or a real portfolio
  
   
• You’re comfortable owning decisions when there’s no one to escalate to
  
   
• You’ve worked with .NET and Python in real production environments
  
   
• You’ve integrated AI or LLM services into live products, not just prototypes
  
   
• Remote-first work suits how you operate- you create structure rather than relying on it
  
   
• Your English is fluent (spoken, written, and reading), strong enough to communicate technical decisions clearly across time zones
  
   

Experience with early-stage SaaS, third-party integrations, and complex systems is a strong advantage. The tradeoffs are real, and the work reflects that.

Why This Role, Why Now

• Direct line to the founder, with real influence on product direction
  
   
• Work tied to measurable outcomes: fairer hiring and better decisions
  
   
• A remote environment built on trust, not surveillance
  
   
• High ownership from day one across a technically deep and socially meaningful problem
  
   

How We Evaluate

We don’t screen on credentials. We evaluate based on what you’ve built and how you think. Come ready to show your work.

Informed Decisions is fully remote and welcomes contractor applications from across Europe.

Sounds relevant? Apply here:

https://informedecisions.app/access/05ea079f-84e2-4027-98ae-ea6c4c2c0859/

We are looking for a skilled Senior UX/UI Designer with expertise in motion design and animation to create engaging casino game experiences. If you understand slot game mechanics, animation principles, and player psychology, we want to hear from you!

Responsibilities

• UX/UI Motion Design — Create high-quality animations and effects for an immersive player experience.
• Game Animation Development — Design animations that enhance slot game mechanics and player engagement.
• Responsive Design — Adapt animations for desktop and mobile platforms.
• Player Psychology & Engagement — Implement animations that maintain excitement without overstimulation.
• Technical Implementation — Integrate animations into HTML5 slot games and optimize performance.
• Compliance & Regulations — Ensure animations meet iGaming regulatory standards.

• Collaboration & Documentation — Communicate effectively with the team and maintain clear documentation.

   

Requirements

Must-Have:

• 3+ years of UX/UI design experience with a motion design focus.
• Strong knowledge of animation principles (Disney’s 12 Principles).
• Experience with Spine 2D, DragonBones for game animation.

• Proficiency in Adobe After Effects, Photoshop & Illustrator.

   

Nice-to-Have:

• Experience with particle effects & VFX for big-win moments.
• Understanding of slot game mechanics and UI clarity.

• Knowledge of HTML5 animation troubleshooting.

   

Why Join Us?

• Work on exciting iGaming projects with a talented team.
• Creative, innovation-driven environment.
• Competitive salary and remote-friendly setup.

If you’re passionate about motion design in gaming, apply now!

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.

We’re looking for a Sales Manager to become a key player in our business development efforts. You’ll work across multiple outbound channels, lead and mentor a lead ge team, close deals, and ensure a smooth handover to the delivery team.
 

Our sales engine is already rolling with two 2 channels and 2 dedicated lead generators:

• Upwork: 3 Top-Rated Plus accounts targeting different technologies.
• LinkedIn: 3 active accounts for outreach and lead generation.
• Email: Warmed-up domains and full infrastructure for cold outreach.

Our Tech Stack:

• Sales tech stack: Lemlist, HeyReach, Instantly, FullEnrich.
• CRM & Tools: HubSpot, LinkedIn Sales Navigator.

What You’ll Be Doing:

• Manage, mentor, supervise 2 lead generators, oversee KPIs, provide feedback, and optimize their performance.
• Close Deals and work closely with Upwork lead generators—support bidding, qualify leads, and close contracts
• LinkedIn Outreach guide the LinkedIn lead generation process using automation tools to book qualified calls
• Run Email Campaigns. Launch and manage cold email campaigns based on ICP; iterate and refine based on data
• Collaborate with PM, CTO, and delivery teams to craft proposals, estimates, and pre-sales materials
• Maintain sales reporting process and present performance updates to CEO

What We’re Looking For:

• Familiarity with web development outsourcing (WordPress CMS, modern front-end frameworks, design principles, SDLC).
• Fluent English with strong communication, presentation, and rapport-building skills.
• Solid understanding of the full sales lifecycle and qualification frameworks (e.g., BANT, MEDDIC, SPIN).
• Hands-on experience with GTM tools like Lemlist, HeyReach, Instantly, Clay, etc.
• Proven track record in building and A/B testing outreach sequences and optimizing based on performance.
• Experience in LinkedIn social selling and relationship-building strategies.
• Familiarity with web development outsourcing is a big plus.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote. 

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.
 

We are looking for a CRM Integration Analyst who is ready to set up business automations and design CPQ flows for companies.
This role combines system analysis, CRM configuration, workflow design, and client communication.

Responsibilities:

• Analyze clients’ existing software landscape, including systems, APIs, and documentation.
• Join client calls to gather requirements, understand business processes, and align on solutions.
• Gather and analyze requirements for CRM integrations and automation solutions.
• Translate business and technical requirements into scalable integration architectures.
• Design and configure business automations and CPQ (Configure, Price, Quote) flows.
• Recommend optimal combinations of software tools to support client business processes.
• Prepare technical specifications for CRM setup and integrations.
• Configure CRM systems and connected tools, including workflows, automations, and integrations.
• Support implementation and ensure smooth adoption of new systems.
• Provide ongoing technical assistance and resolve issues during system usage.

Requirements:

• Upper-Intermediate English (B2+) and fluent Ukrainian.
• Experience in CRM configuration, software integrations, technical support, or basic programming.
• Understanding of business processes (sales, marketing, finance, operations).
• Strong analytical mindset and ability to build structured logic and workflows.
• Ready to take ownership and communicate directly with clients.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote.

Our Customer:

Our customer is a global, data-driven digital advertising technology company operating at large scale across mobile apps and web platforms.
 

Your Tasks:

• Analyze large, complex datasets to uncover patterns, insights, and business opportunities;
• Design, build, and own scalable, end-to-end data pipelines;
• Develop and productionize advanced machine learning models and algorithms, particularly in monetization-related domains;
• Build and maintain data models for real-time (online) processing;
• Contribute to the creation of new data-driven products and continuously improve existing ones;
• Collaborate with Product, BI, Analytics, DevOps, R&D, and Marketing teams to deliver complete solutions;
• Lead full production releases, including requirements analysis, testing, monitoring, result evaluation, and rapid response to critical issues.
   

Required Experience and Skills:

• 6+ years of experience as a Data Scientist with a strong foundation in machine learning concepts and models;
• Previous experience in the Ad-Tech industry;
• Hands-on experience working on large-scale, high-load systems processing billions of requests per second;
• Hands-on experience with Python including writing production-ready code and working with modern Python frameworks and tooling;
• Experience with data science / ML libraries and models, such as regression and classification models (e.g. XGBoost, LightGBM), recommendation systems, and related ML techniques;
• Solid understanding of databases and SQL for data analysis and retrieval;
• Experience with monitoring and alerting tools such as Grafana and Kibana;
• Proven experience working in real-time / online environments;
• Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or a related field;
• Strong end-to-end ownership mindset: ability to take solutions from research and experimentation through implementation and production;
• Fluent English with strong communication and collaboration skills.
   

Would Be a Plus:

• Familiarity with the programmatic advertising ecosystem (DSPs, SSPs, ad exchanges);
• Experience with relational databases (e.g. Vertica, VoltDB) and non-relational databases (e.g. MongoDB);
• Experience working with PMML.

Working conditions

5-day working week, 8-hour working day;

Remote work.

Admiral Studios is a fast-growing Ukrainian IT outsourcing company, specializing in web development, mobile development, UI/UX, and SEO.

We embrace the latest and most advanced technologies: Node.js, React, Laravel, Shopify, Python, and WordPress.

We create quality projects for clients in the US, Europe, the UK, and Canada 🌍, especially Healthcare, Real Estate, and E-commerce projects.

Currently, our team consists of more than 60+ skilled experts 👨‍💻, and we are constantly growing.

We’re looking for a practical, hands-on Marketing Specialist who enjoys working directly with outreach and lead generation and feels comfortable in a fast-paced, flexible environment.

This role is focused on execution, testing, and close collaboration with Sales, rather than high-level brand or campaign management. 

🎯 For a perfect match, we expect:

• 1+ year of experience in marketing, lead generation, or outreach
• Hands-on experience with Email marketing and basic automation tools
• Confident use of LinkedIn (filters, outreach workflows)
• Ability to independently launch and manage LinkedIn & Email campaigns
• Experience working closely with Sales (lead validation, outreach support, campaign coordination)
• Strong hypothesis-driven approach: testing ideas, analyzing results, iterating
• English level: Intermediate or higher

💎 Nice to have:

• Experience building or optimizing marketing processes
• Experience with additional outreach channels or segmentation tools
• Analytical thinking and willingness to experiment

• Basic familiarity with Shopify or e-commerce

   

💼 Duties & Responsibilities:

• Launching and managing LinkedIn and Email outreach campaigns
• Testing new approaches, niches, and messaging strategies
• Supporting Sales with outreach tasks and lead qualification
• Identifying and validating relevant leads
• Running small experiments and optimizing campaign performance
• Suggesting improvements to workflows and outreach processes

Why Join Admiral Studios?

⭐️Growth-Oriented Environment – value efficiency, flexibility, and results

🤝Team Spirit – Regular corporate online & offline events to keep the team connected
📚Professional Development Support – we provide:

• A structured Performance Review system
• Access to an internal knowledge library
• Career growth opportunities with a clear development plan
• A budget for improving work processes and implementing new ideas

🧘Work-Life Balance – Enjoy a flexible work schedule and a fully remote work model
✅Paid Time Off – 20 vacation days + 10 sick leave days per year

Hiring steps: Screening — Test Task — Tech Interview — СEO Interview — Job Offer 

If your experience and skills match our candidate scorecard, the recruiting team will contact you within 5 business days 💙

Don't forget to provide your Telegram nickname for contact 

About Us…

In 2005, brothers Dimitri and Steve Osler set out to reimagine how businesses communicate, and that vision became Wildix. Today, from our headquarters in Tallinn, Estonia, Wildix is one of the world’s fastest-growing UCaaS companies, with 300+ team members from 15+ nationalities, working across Europe, the UK, the Americas and beyond. We serve businesses in 135+ countries through a partner-first ecosystem, delivering secure, intuitive solutions that keep companies connected, productive and ready for what’s next.

At Wildix, we don’t just build technology, we live it. As a remote-first company, we rely on our own platform every day to collaborate globally and innovate fast. With steady growth and a strong foundation, we offer real opportunities to advance your career as we scale, making an impact in a global team that’s shaping the future of work.

At Wildix, our mission is clear: Empower companies worldwide with seamless communication solutions that drive productivity, efficiency, and growth.

About The Role…

We are looking for an experienced Infrastructure Security Engineer to strengthen and harden our AWS-based infrastructure. This role will focus on designing, implementing, and continuously improving our security posture, ensuring compliance with best practices, and proactively identifying and mitigating risks across our cloud environment.

What You Will Do…

• Drive continuous security improvements in AWS based on SIP findings.
• Maintain “100% Green” status in AWS Trusted Advisor and Security Hub.
• Own IAM security, enforcing MFA, auditing admin access, rotating keys, and implementing least-privilege roles.
• Manage temporary privileged access workflows to ensure secure, time-bound access.
• Lead the lifecycle of infrastructure security findings, from triage to remediation and verification.
• Build and operate centralized logging and SIEM for full visibility and threat response.
• Collaborate with DevOps/SRE teams to embed security into provisioning and deployments.
• Coordinate AWS security assessments and penetration testing, driving remediation.
• Provide security guidance for architecture and new services, ensuring best-practice implementation.
• Be available during working hours: 10:00–19:00 UA Time (09:00–18:00 CET).
  
   

What You Will Bring…

• 7+ years in Infrastructure Security, Cloud Security, or Cloud Engineering roles.
• Deep expertise in AWS security services (IAM, VPC, Control Tower, Security Groups, GuardDuty, Config, KMS, WAF).
• Hands-on with Infrastructure-as-Code security (Terraform, CloudFormation) and CI/CD pipeline hardening.
• Solid understanding of AWS network architecture and secure networking practices.
• Skilled in monitoring, logging, and incident response in cloud environments.
• Knowledge of cloud compliance frameworks (ISO 27001, SOC 2, CIS Benchmarks).
• Experienced in threat modeling, vulnerability management, and remediation.
• Practical implementation of zero-trust and least-privilege principles.
• Conduct security reviews of architecture and configurations.

Why You’ll Love It Here

👫 Work with a Supportive, High-Performing Team – We believe in trust, autonomy, and working with bright, passionate individuals who drive real impact.

🌍 A Truly International Workplace – Our diverse and inclusive team ensures you’ll always feel connected and supported, no matter where you are.

🚀 Shape the Future of Global Communication – Be part of a team transforming how businesses operate in an era of remote work and AI-powered collaboration.

💼 Join a Profitable & Stable Company – We’re not a startup experiment, we’re a two decade old success story with sustained profitability, meaning we can back your boldest ideas.

What We Offer

🏖️ Generous Time Off – Take the breaks you need to relax, recharge, and come back inspired.

💻 Top-Tier Tech – Love Mac? So do we! We equip our team with the best tools for success.

🚀 Career Growth & Development – We cover certifications and IT conferences to keep you at the top of your game.

🌱 Well-being Support – We offer access to psychology sessions to support your mental and emotional health

Happy with them? Our Benefits are country-specific. You can ask your recruiter for more information

Interview Process

🤝 Step 1: Initial Screening – A chat with our Talent Team to understand your background, experience, and motivations (30 mins).

🛠️ Step 2: Technical Interview – A deep dive with your potential manager to assess your skills and fit for the role (60 mins).

We Are Wildix

Wildix is an equal-opportunity employer. We value diversity and welcome all applicants regardless of race, gender, age, religion, or any other characteristic. Everyone is encouraged to apply and is welcome to join our Blue Ecosystem. 

Ready to join us? Apply Now!

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.

This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements.

Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.

What we’re looking for

• Fluent in spoken English (В2+, work with US customers);
• Experience from 0,5 year in a relevant position;
• Be flexible with the US schedule. Working hours from 16:00 pm to 00:00 Kyiv Time;
• Ability to prioritize tasks for the team and coordinate multiple projects in a changing environment.

What you’ll be doing

• Full cycle of project management: from participation in pre-sales preparation to the stage of successful implementation/support of the project;
• Prepares a daily, weekly, and monthly plan;
• Work with technical documentation;
• Provide reporting on the progress of tasks and the project;
• Tracking workload, deadlines, and progress on each project’s tasks.

What We Offer:

• Working hours aligned with US time zones, typically 16:00–00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.
• Structured, personalized onboarding to help you ramp up effectively.

Hiring stages: Recruiter screening → Skills assessment interview → Final culture fit interview.
 

Apply with your resume and a short note outlining your relevant experience. You can also submit it through our website at comeback.ua. Selected candidates will be contacted by Come Back Agency.

Our partners are looking for a strategic BI Lead to bridge the gap between complex data and actionable business growth. You will spearhead the analytics stream, transforming raw traffic and player data into a clear roadmap for product and marketing optimization.

Responsibilities:

• Develop and Execute Analytics Roadmap: Lead the BI strategy focused on acquisition, player behavior, and product performance;
• Ensure End-to-End Visibility: Build and maintain full-funnel transparency, linking initial traffic sources to gameplay patterns and final monetization;
• Optimize Performance: Analyze affiliate quality, conversion funnels, and player LTV to identify growth levers and eliminate inefficiencies;
• Drive Product Insights: Evaluate player engagement and retention trends to provide data-driven recommendations for UX and revenue enhancements;
• Manage Experimentation: Design and analyze A/B tests for onboarding flows, bonus mechanics, and new features;
• Lead and Mentor the Team: Manage and grow a team of analysts, establishing high standards for data storytelling and technical deliverables;
• Oversee Data Governance: Collaborate with DWH teams to align KPIs, standardize definitions, and ensure absolute data integrity across all platforms.

Requirements:

• 3+ years of experience in Data Analytics, including at least 2+ years specifically within the iGaming industry;
• 1+ year of proven experience in a leadership or mentoring role (Lead / Head of / Senior);
• Deep domain expertise: Mastery of iGaming-specific metrics (GGR/NGR, FTDs, LTV, Retention, and Churn);
• Expert-level SQL (PostgreSQL / BigQuery);
• Proficiency in Python (Pandas, NumPy) for advanced modeling and data manipulation;
• Hands-on experience with BI Tools: Tableau, Apache Superset, or Looker Studio;
• Product and Business Mindset: Ability to translate technical data into strategic business recommendations;
• Excellent communication skills to bridge the gap between technical teams and stakeholders.

Technical Stack:

• SQL: PostgreSQL / BigQuery;
• Python: Pandas, NumPy;
• BI: Tableau / Apache Superset / Looker Studio.

Benefits:

• Medical insurance;
• Regular salary reviews and timely payments;
• Provision of necessary equipment for work as needed;
• Corporate English classes;
• 50% reimbursement for courses/certifications/webinars;
• Development towards senior leadership positions within the company;
• Ability to work fully remotely;
• 20 days of vacation and paid sick leave;
• Informal online/offline events every month.

We are supporting a large-scale digital banking transformation programme and are looking for an experienced Solutions Architect to lead the architecture of modern mobile and omnichannel banking platforms.

Location

We are primarily considering candidates based in:

• Spain
• Portugal
• Eastern Europe

Key Responsibilities

• Define and lead the solution architecture for digital banking platforms, including mobile and omnichannel services
• Produce and maintain High-Level Design (HLD) and Low-Level Design (LLD) documentation
• Design and guide microservices-based architectures for scalable, high-availability systems
• Work closely with engineering teams to ensure architectural designs are properly implemented
• Collaborate with product, security, and infrastructure teams to align architecture with functional and non-functional requirements
• Ensure solutions comply with Open Banking standards, banking security practices, and regulatory requirements
• Support API-driven architectures and integrations across digital banking ecosystems
• Communicate architectural decisions clearly to technical and non-technical stakeholders
• Contribute to architecture governance within a multi-vendor enterprise programme

Requirements

• 15+ years of experience in IT, including 7+ years as a Solutions Architect
• Strong experience designing architectures for digital banking platforms (mobile or omnichannel preferred)
• Proven expertise in microservices architecture
• Experience with Java-based backend ecosystems
• Familiarity with React-based digital platforms
• Hands-on experience with Microsoft Azure cloud architecture
• Knowledge of Open Banking frameworks and banking application security
• Experience designing high-performance, high-availability distributed systems
• Ability to produce clear HLD and LLD architecture documentation
• Experience using architecture modeling tools such as UML, Draw.io, or PlantUML
• Strong stakeholder management and collaboration skills
• English level C1 or higher

Nice to Have

• Experience working on large-scale digital banking transformation programmes
• Experience supporting mobile banking platforms
• Strong background in API-first architecture within financial services

Working Model

• First month: On-site in Dublin, Ireland, to collaborate with key stakeholders and align on the architectural foundations of the programme.
• After the initial month: The role will transition to fully remote work.

All travel and accommodation for the Dublin visit will be fully arranged and covered by the company.

Backend AI Engineer

[Freelance, Full-time, Remote]

SNEAK PEEK

⇨ Location: Remote, GMT+0/+4

⇨ Interview process: HR Interview ⇨ Technical interview ⇨ Take-home challenge ⇨ Presentation of home challenge 

WHO ARE WE? 

At Rounds, we believe in harnessing the power of cutting-edge technology to drive business success. Our transformative, machine-learning technology identifies and optimizes mobile assets, while our team of experts, with their unparalleled human capital and business acumen, provides the strategic direction and support to turn mobile assets into profitable businesses. Together, we are revolutionizing the mobile industry. You can find out more info about us here: www.rounds.com.

THE ROLE

We’re looking for a passionate AI engineer to join our dynamic AI Innovation Team, which is the driving force behind technological advancement in our company. Here, you will use cutting-edge AI technologies to boost productivity and make extraordinary ideas a reality.

We're excited to meet someone who is AI-obsessed, has a strong sense of product ownership, is ready to take initiative and who is full of creative ideas. If this sounds like you, we want you to join our team!

Hiring manager: Alik Hochner - CTO, Ori Nahum - AI Innovation Team Lead 

KEY RESPONSIBILITIES

• Develop and maintain high-quality AI solutions for both internal teams and external users.
• Architect sophisticated AI agents, including multi-agent systems.
• Design and implement evaluation frameworks to assess AI performance, accuracy, and reliability.
• Collaborate across diverse teams to boost developer productivity.
• Continuously explore the evolving AI landscape and identify impactful tools for company growth.
• Shape the company’s best practices and guidelines for AI usage.

WHAT ARE WE LOOKING FOR?

Must-have:

• 5+ years experience in software development (preferably in Python or TypeScript).
• Skilled in prompt engineering and have a strong understanding of how LLMs work internally.
• Proven track record in developing AI agents from scratch and implementing effective AI solutions for businesses.
• Basic DevOps proficiency (CI/CD, Cloud).
• Quick learner who adapts effortlessly to new tools and approaches.
• Passionate and knowledgeable about current AI trends and best practices.
• Excellent English communication skills.

HOW DO WE WORK?

We are a distributed team of more than 150 people, all working remotely and communicating partially synchronously (we usually overlap with our teams for 5 hours daily and are free to work on some of the tasks whenever it suits us best). We value open communication, proactivity and work/life balance and we measure our freelancers on performance, rather than on the time spent on the job.

WHAT’S IN IT FOR YOU? 

• 100% remote work model
• Flexible full-time working hours 

INTERESTED?

Our recruitment process consists of the following steps: 

• HR interview with the recruitment manager: 45 min
• Technical interview with the AI Engineer Tech Lead: 1 hour
• Take-home challenge: ~ 4 hours of work
• Final Interview and Take-home challenge presentation with CTO and AI Engineer Tech Lead: 1 hour

Full Stack Developer

[Full-time, Remote, Freelancer]

SNEAK PEEK 

⇨ Location: Remote, GMT+0/GMT+4

⇨ Interview process: HR interview ⇨ technical interview ⇨ take-home challenge ⇨ final interview ⇨ offer 

WHO ARE WE? 

At Rounds, we believe in harnessing the power of cutting-edge technology to drive business success. Our transformative, machine-learning technology identifies and optimizes mobile assets, while our team of experts, with their unparalleled human capital and business acumen, provides the strategic direction and support to turn mobile assets into profitable businesses. Together, we are revolutionizing the mobile industry. 

THE ROLE

We are looking for an experienced Full-Stack developer with a passion for building complex systems to further expand our set of internal tools. You will architect and develop our core internal systems, understand and predict user interactions, and create well-written code, based on the business needs. You will work closely with other developers and QA testers, using the Agile methodology and a quality-first approach.

Hiring manager: Nadav Nagel, Software Team Lead 

WHAT ARE WE LOOKING FOR?

• 5+ years of commercial experience building publicly available websites
• 3+ years of experience in backend development using Typescript and Node.js
• Up-to-date with at least one of the latest UI frameworks (React, Vue.js, etc.)
• Detail-oriented and able to adhere to deadlines
• Excellent communication skills in both written and verbal English

INTERESTED?

Our recruitment process consists of the following steps: 

• HR interview: 30 min
• Take-home challenge.
• Technical interview: 60 min
• Final interview

Backend Engineer

[Freelance, Full-time, Remote]

SNEAK PEEK

⇨ Location: Remote, GMT+0/GMT+4

⇨ Interview process: HR interview + take-home challenge ⇨ technical discussion ⇨ final interview

WHO ARE WE? 

At Rounds, we believe in harnessing the power of cutting-edge technology to drive business success. Our transformative, AI technology identifies and optimizes mobile assets, while our team of experts, with their unparalleled human capital and business acumen, provides the strategic direction and support to turn mobile assets into profitable businesses. Together, we are revolutionizing the mobile industry. 

THE ROLE

This is a hybrid Backend/Platform Engineering role to lead cloud and backend systems migrations. It involves shipping backend solutions that move the needle at the scale of millions of dollars in business impact.

You will evaluate, plan, and migrate backend systems from various stacks and cloud providers (AWS, Azure, GCP, and more) into our infrastructure. By leveraging AI tools and automation, you will significantly accelerate migrations and modernization efforts.

This role suits Backend Engineers who aren't afraid to jump in and shape the DevOps stack.

Responsibilities

• Architect, evolve, and oversee backend infrastructure transformations (NodeJS, Python and more).
• Assess complexity, outline risks, and estimate effort and timelines.
• Rebuild or refactor backend/cloud components when needed, including rewriting services (with AI assistance).
• Utilize AI tools and agents to speed up research, refactoring, documentation, and investigations (Claude, Cursor and more).
• Design and maintain cloud environments using Infrastructure as Code (Terraform preferred) mainly for GCP, AWS and Azure.
• Build, maintain, and improve CI/CD pipelines.

Hiring manager: Igor Yakunin 

WHAT ARE WE LOOKING FOR?

Must-have:

• 5+ years Backend Engineering.
• Hands-on experience with GCP or strong AWS/Azure background and willingness to transition.
• Practical experience with Terraform (or similar IaC).
• Strong Linux, networking, and cloud fundamentals.
• Experience with Docker and containerized deployments.
• Proficiency in at least one backend language (Python, Node.js, Go, Java, etc.).
• Experience with SQL and/or NoSQL databases.

Nice-to-have:

• Experience with Kubernetes or other orchestration tools.
• Familiarity with CI/CD platforms such as CircleCI, GitHub Actions, GitLab CI, or ArgoCD.
• Experience with reverse-engineering unknown systems or digging through legacy setups.
• Experience with monitoring tools such as Datadog, Prometheus, or GCP Monitoring.
• Background in refactoring, rewriting, or modernizing backend services.

INTERESTED?

Our recruitment process consists of the following steps: 

• HR Interview (45 min) - Discuss your background and fit.
• Take-Home Challenge (~2 hours of work) - Practical assignment reflecting real work.
• Technical Interview (60 min) - Evaluate cloud, DevOps, and coding skills.
• Final Interview (60 min) 

Get in touch at hr@rounds.com. 

We look forward to hearing from you! 

Playson 🤘 is a leading online gaming supplier founded in 2012 that has developed worldwide recognition in the industry.

Our promotional features team is seeking a Senior Backend Engineer with a strong background in Node.js. This role is focused on developing and optimizing promotional features for our gaming platforms, where performance, scalability, and cutting-edge solutions are paramount.
If you’re a product-passionate person, your mind is keen to solve deep tech engineering problems, and you have a fast “PoC first” approach with a deep sense of ownership, we would love to hear from you.

To succeed in the role, you will have:

• A degree in Computer Science or related field
• Strong development experience in Node.js/TypeScript 5+ years
• Strong understanding of Async approaches
• Experience with Messaging systems like Kafka, RabbitMQ
• Experience in distributed systems
• Experience with RDBMs (MySQL, PostgreSQL etc.), CDBMs (Redshift, ClickHouse etc.), NoSQL (DynamoDB, MongoDB, etc)
• Experience in writing e2e & unit tests
• Experience with development production-ready solutions
• Hands-on product experience with Kubernetes

Would be beneficial to know:

• Understanding of enterprise development patterns
• Experienced with large-scale microservices architecture
• Experience with cloud providers (AWS, GCP, etc.)
• Active performance observation
• Gambling domain experience
• Understanding of application security and industry standards, its best practices

What will you be doing?

• Develop and maintain robust backend systems for our promotional features.
• Optimize existing systems for enhanced performance and scalability.
• Lead technical decisions and contribute to our SaaS solutions.
• Collaborate with distributed teams to innovate and implement new features.
• Ensure code and architectural excellence through reviews.
• Address complex technical challenges with innovative solutions.

What you get in return:

• Competitive Salary: We offer a competitive salary in EUR, subject to annual performance reviews
• Quarterly Bonuses: Benefit from a transparent and systematic quarterly bonus system
• Flexible Schedule: We offer a flexible work schedule to accommodate your needs
• Remote Work Option: Choose to work remotely, providing greater flexibility and comfort
• Medical Insurance: Receive comprehensive medical insurance for both you and a significant other
• Financial Support for Life Events: We provide financial support during special life events
• Unlimited Paid Vacation: Enjoy unlimited paid vacation leave
• Unlimited Paid Sick Leave: Take unlimited paid sick leave whenever necessary
• Professional Development: Get reimbursement for professional development courses and training

Join us today!

  Project Tech Stack (must be comfortable across all):
  - Frontend: HTML5, CSS3, Vanilla JavaScript (ES6 modules), Vite
  - i18n: i18next, multi-locale URL routing
  - Backend: Node.js, Express, Axios, dotenv
  - Architecture: route/controller/service layered backend
  - Infra: Nginx (reverse proxy, subdomains, redirects), Let’s Encrypt/SSL
  - Containers: Docker, Docker Compose
  - CI/CD: GitHub Actions, SSH/rsync-based deploys, DigitalOcean
  - Payments: PayPal, Apple Pay, Google Pay, webhook integrations
  - Version control/process: GitHub PR workflow (staging/main, rebase-based flow),

Requirements:
  1. 3+ years hands-on JavaScript full stack (Node + vanilla JS).
  2. Strong in Vanilla JS debugging (not only React/Next abstractions).
  3. Experience integrating third-party payment APIs and handling redirect/3DS flows.
  4. Solid Express API development + validation/error handling.
  5. Practical Nginx knowledge (routing, proxying, domain/subdomain behavior).
  6. Docker + Linux CLI fluency.
  7. GitHub Actions CI/CD experience.
  8. Comfortable with production troubleshooting (logs, network calls, env configs).
  9. Experience with localization/multi-locale behavior in web apps.

  Nice-to-Have:
  - Adyen/PayPal/Apple Pay/Google Pay direct experience
  - DigitalOcean experience (Using vps, firewalls setup, selfhosting)
  - E-commerce funnel/upsell flow experience