Jobs at Djinni

Techstack is a technology product engineering company that sets an example for high development standards in the IT industry. We empower each team member to influence the development of the product, company, and processes.

About the role:

We are looking for an experienced Senior Manual QA Engineer for a long-term, part-time B2B engagement(4 years).
This opportunity is ideal for QA professionals who are looking for an additional project alongside their current employment or freelance engagements.

Language requirements:

German: B2 or higher, with documented proof of proficiency.

English: B2 or higher, with documented proof of proficiency.

The project involves testing a multilingual web platform powered by a CMS, as well as a mobile application available on iOS and Android. The web platform supports more than 12 languages, bringing additional attention to functional consistency, content accuracy, and user experience across different language versions.

You will collaborate with an international, distributed team, contribute to structured testing activities, and help ensure a reliable experience for users across web and mobile platforms.

The role is primarily remote and includes occasional on-site testing sessions in Vienna, up to three days per year. Business travel expenses will be covered.

Requirements

• At least 3 years of experience working at Senior QA level.
• Experience participating in at least 5 software projects.
• ISTQB Certified Tester Foundation Level (CTFL) or a higher-level ISTQB certification.
• Hands-on testing experience in at least 2 of the following areas:
• Backend and API testing.
• Enterprise CMS testing.
• Mobile application testing for iOS and/or Android.
• Experience working in Agile environments and distributed teams.
• German proficiency at B2 level or above.
• English proficiency at B2 level or above.
• Documentary proof of both language levels, subject to the applicable certification requirements.

Responsibilities

• Perform manual functional, regression, and exploratory testing of web and mobile applications.
• Design, maintain, and execute test cases and test scenarios.
• Test backend functionality and APIs, CMS-based platforms, and mobile applications.
• Identify, document, and track defects, ensuring clear reproduction steps and useful supporting evidence.
• Validate application behavior across different devices, platforms, and language versions.
• Collaborate with developers, QA colleagues, and other stakeholders to investigate and resolve issues.
• Participate in Agile ceremonies and coordinate testing activities within a distributed team.
• Maintain test documentation and report testing progress and results.
• Use Jira and Xray for test management and defect tracking, alongside Slack and Microsoft Teams for collaboration.
• Communicate with German-speaking stakeholders and use English for collaboration where required.

Culture:

At Techstack, we care about how we build products — not only about the result, but also about the quality of the engineering process and the way we work together.

We encourage people to keep learning, share what they know, and take ownership of their work.

Tech Guilds — communities where specialists share knowledge, discuss technical solutions and approaches, and keep up with industry trends.

Meetups and knowledge sharing — opportunities to share your experience with colleagues and the wider tech community.

Mentoring and leadership — opportunities to grow as a mentor, technical lead, or take on other roles where you can support others and share your expertise.

We believe that good products come from people who care about what they build, keep developing their expertise, and are comfortable both challenging ideas and being challenged.

What we offer

• A long-term international project engagement.
• Remote-first collaboration under a B2B contract.
• A part-time workload of approximately 45 hours per month, suitable for combining with other professional commitments.
• Collaboration with a distributed team and exposure to web, CMS, and mobile testing.
• Occasional business trips to Vienna, up to three days per year, with travel expenses covered.

See yourself in this role? Send us your resume and let’s start the conversation!

Umbrelly.Cloud is a B2B US product company.
 
Our mission is to help businesses which use AWS reduce their cloud bill & provide world-class technical support. Umbrelly is an Official Advanced Tier Partner of AWS, and currently serving 100+ enterprises & startups from US, EU and other Tir 1 countries. 

Our product is useful for the clients, we have excellent reviews from the customers and great reputation as an AWS Partner. On average clients stays with us 3+ years, it's absolutely "white" product and niche. 

It's easy to market & sell, cause we don't charge customers. Our product is free for clients, since our monetisation comes from AWS for providing technical support and serving their customers. Customers get guaranteed results from Umbrelly. 

We are looking for an Ad Creative Designer who make converting static & video creatives so we can show our great offer to customers. We believe Umbrelly's product should be distributed as wide as possible, so businesses no more waste their budgets on unused AWS resources & cloud waste, and instead use money which Umbrelly save them to grow their businesses. 

What we expect from candidates on Creative Marketing Designer & Manager position: 
- Experience with B2B, SaaS or fintech ads
- 1+ years experience creating static & video creatives & copies for Google Ads & Meta Ads
- metric oriented approach, understanding of key ad metrics of their creatives, like CPL, ROAS, ROI, CAC, LTV & other key numbers.
- Succesfull case studies from you prev projects and portfolio with ads that actually ran and you can share with us during the interview
- Understanding how to collaborate with PPC team or basic experience launching Google Ads & Meta Ads campaigns yourself
- Understanding user behavior, hook logic driven by user intent, taste for visuals, creating conversion-focused creatives
- Generating creative ideas for marketing campaigns, identifying trends, uncover insights,  generate fresh creative concepts
- Intermidiate+ English level, experience launching creatives for international markets

Why Umbrelly is a great place to work and grow:
- Short path from idea to launch: you work directly with our marketing lead, without layers of approvals
- Unlimited potential to scale: as long as CPL & ROAS are in the needed range, we keep scaling the budget, and that means more creatives
- If you ambitious and deliver results during 6 months in a row, you can grow into a Creative Lead
- Case Study which you can proudly add to your portfolio, without saying on next job interview "under NDA"
- Umbrelly.Cloud is runned by experienced C-level team and backed by prominent investors

Apply for the vacancy and open your contacts on djinni, let's talk! 

Role Overview:

We are seeking a highly experienced Senior Node.js Engineer to join our growing engineering team. As a senior member of our team, you will take on a leadership role in designing, implementing, and scaling highly performant systems. You will work with cloud infrastructure, primarily AWS, and build robust microservices, Big Data processing services, and data platforms that support high-load, real-time applications.

You will be responsible for architecting complex systems, ensuring scalability and efficiency while also providing mentorship to junior developers. This is an exciting opportunity for a self-driven, technically versatile engineer who is comfortable working independently and thrives in a fast-paced, collaborative environment.

Key Responsibilities:

• Architecture & Design: Lead the architecture and design of high-performance, scalable, and fault-tolerant Node.js applications, microservices, Big Data processing systems, and data pipelines running in a cloud environment (primarily AWS).
• Cloud Infrastructure: Utilize AWS services such as EC2, Lambda, RDS, S3, Kafka/MSK, SQS, and others to ensure that applications and data platforms are highly available, secure, and performant.
• Microservices & Event-Driven Systems: Build and manage distributed, high-load microservices and event-driven architectures that can scale effectively and handle large volumes of concurrent traffic and data.
• Data Infrastructure: Design and develop integrations and Big Data processing pipelines that ingest, transform, and distribute large volumes of data across operational and analytical systems.
• High-Performance Systems: Optimize Node.js applications and data processing workloads for performance under high load, ensuring minimal latency and maximum throughput.
• Multithreading: Implement advanced multithreading techniques to enhance system performance and concurrency.
• Code Quality & Best Practices: Write clean, maintainable, and efficient code while adhering to industry best practices and design patterns.

Part of the role will include integration with multiple external APIs, processing large volumes of data, and compiling it in a flexible way to accommodate various operational and analytical requirements.

Requirements

• 4+ years of Back end development
• In-depth knowledge and experience developing API’s and microservices
• Strong proficiency with JavaScript, and Knowledge of Node.js and frameworks available for it (such as Express or equivalent)
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Understanding fundamental design principles behind a scalable application
• Experience working with various data storage solutions such as Redis, MongoDB, etc.
• Experience working with Queuing solutions such as gearman, RabbitMQ, SQS, etc.
• Implementing automated testing modules and unit tests
• Proficient understanding of code versioning tools, such as Git
• Experience with cloud services such as AWS and GCP
• Experience working with Linux
• Experience with CI/CD processes
• Bonus - Familiarity with K8S, and related frameworks such as helm, Argo-cd, Prometheus, etc.

We are looking for an experienced, performance-driven Creative Strategist with a strong Direct Response Copywriting background, capable of developing, testing, and scaling winning creatives for DTC brands, primarily on Meta (Facebook/Instagram).

Key Responsibilities:

• Conduct competitor, audience, and market research, continuously analyzing winning ads, emerging trends, hooks, and creative formats.
• Identify successful patterns and translate them into original, high-converting creative concepts.
• Write compelling Direct Response ad scripts, hooks, VSL-style concepts, and copy aligned with campaign objectives.
• Create, test, and iterate static ads, UGC concepts, and video scripts, focusing on finding and scaling winning creatives.
• Manage and coordinate UGC creators through a dedicated creator platform.
• Collaborate with video editors and creators, reviewing creative execution and analyzing results to improve future scripts and concepts.
• Use performance data to understand why creatives succeed or fail and continuously optimize for conversions and scale.

Required Experience:

• Proven experience as a Creative Strategist and/or Direct Response Copywriter working with DTC/eCommerce brands.
• Hands-on experience with Meta advertising campaigns spending at least $5,000 per day.
• Strong Direct Response fundamentals, including consumer psychology, persuasive copywriting, hooks, offers, and sales messaging.
• Experience writing video ad scripts, UGC concepts, and conversion-focused static ads.
• Strong analytical skills and the ability to turn competitor research and campaign performance into actionable creative ideas.

Nice to Have:

• Experience writing VSLs (Video Sales Letters) and long-form Direct Response copy.
• Participation in Copy Dojo or similar advanced copywriting communities.
• Experience working with high-revenue DTC brands and scaling creative performance.
• Demonstrated track record of developing winning ads that successfully scaled.

About RiskSeal

RiskSeal is a B2B startup serving fintech clients globally. Our API-first credit risk management platform enables digital banks and consumer lenders to simplify onboarding through data-driven insights.

We are growing rapidly and value collaboration with passionate, creative professionals. Join us to innovate, contribute your expertise, and grow alongside our team.

Headquarters: Dallas, Texas, USA

European Office: Warsaw, Poland

Learn more: https://riskseal.io/

Job Description

We are looking for a talented and self-motivated Middle+ QA Engineer to join our remote team. The ideal candidate has at least 3 years of commercial experience in software testing, primarily with web applications.

The role requires a strong understanding of software development and testing processes, the ability to work independently, take ownership of testing activities, and proactively identify potential quality risks.

Basic practical experience with API testing using tools such as Postman is required, along with basic SQL knowledge and experience using browser developer tools.

Responsibilities

• Perform functional, regression, exploratory, cross-browser, and cross-platform testing of web applications.
• Perform basic API testing, including validating requests, responses, status codes, headers, and payloads using tools such as Postman.
• Analyse requirements, identify potential risks, and ensure adequate test coverage.
• Create, maintain, and improve test documentation, including test cases and checklists.
• Identify, document, prioritise, and track defects throughout their lifecycle.
• Estimate testing effort and contribute to sprint and release planning.
• Take ownership of assigned testing activities and communicate progress, risks, and blockers.
• Proactively suggest improvements to QA processes.

Requirements

• At least 3 years of commercial experience in software testing.
• Strong analytical and problem-solving skills, with close attention to detail.
• Solid experience in requirement analysis and test documentation.
• Strong understanding of software development and testing processes.
• Hands-on experience with functional and regression testing, including test design techniques and change impact analysis.
• Basic practical experience with API testing using tools such as Postman.
• Basic SQL knowledge and experience using browser developer tools.
• Ability to work effectively both independently and as part of a team.
• Intermediate written English and basic spoken English.
• Ability to prioritise tasks and work effectively in a fast-paced startup environment.
• Strong communication and collaboration skills.

Will Be a Plus

• Basic knowledge of HTML / CSS / JavaScript / Python.
• Experience with UI or API test automation using tools such as Playwright or pytest.
• Experience using AI-assisted coding tools to create scripts, documentation, or testing utilities.

What we offer

• Competitive compensation and opportunities for professional growth
• The opportunity to influence product quality and testing processes
• A high level of ownership and independence in decision-making
• Collaborate directly with experienced product and development teams
• Work in a fast-moving environment with minimal bureaucracy
• Join a team that values initiative and expertise

About the Role

We are looking for a Senior DevOps Engineer to join its in-house platform team (team of 5) as an embedded offshore engineer. You will own Kubernetes workloads on AWS, GitOps delivery with ArgoCD, CI/CD pipelines, and the observability stack — and treat internal dev teams as your customers. The role includes an on-call rotation.

Must-haves

• 5+ years hands-on DevOps experience in cloud-based environments, ideally in startups / scale-ups serving large enterprise customers.
• Kubernetes in production (EKS): workload management, networking, troubleshooting.
• ArgoCD / GitOps and CI/CD pipelines (e.g. GitHub Actions): build, maintain, extend and debug independently; able to walk through real CI/CD flows you designed.
• Observability: hands-on ELK stack (Elasticsearch, Logstash/Fluentd, Kibana) and Grafana — writing alerts, dashboards and runbooks. Datadog, Coralogix or Groundcover a plus.
• Terraform (IaC) in production.
• AWS: EKS, RDS, MSK, SQS/SNS, Lambda.
• Scripting in Python and Bash.

Nice-to-haves

• Kafka, MongoDB, Redis or SingleStore.
• Pulumi or Flux.
• Basic FinOps / cloud cost awareness.
• AI-driven approach: uses AI tooling day to day to reduce toil and automate work.

Soft skills

• High ownership end-to-end — not just until the PR is merged.
• Strong written and spoken English; active in async Slack discussions, writes clear technical summaries.
• Service mindset: internal developers are the customer; responds fast and follows through until resolved.
• Works independently with minimal hand-holding; flags blockers and risks early.

Role Overview:

We are looking for a Senior level Automation QA Engineer to join our team in Poland. The role will primarily focus on API testing (80%) with UI testing (20%). You will help design, enhance, and maintain automation frameworks, ensuring efficient and scalable testing.

Key Responsibilities:

Automation Framework & Strategy

• Contribute to designing and improving automation testing strategies.
• Develop and maintain automation frameworks for API, UI, and LLM validation.
• Ensure scalability, maintainability, and reusability of automation code.

Test Development & Execution

• API Testing: Develop automated API tests in Python using the Requests library.
• UI Testing: Create and maintain UI tests with Playwright.
• Integrate automated tests with Postman collections where applicable.
• Execute performance, regression, and functional tests.

Continuous Integration & Deployment

• Integrate automation tests into CI/CD pipelines (Jenkins preferred).
• Work with Docker and Kubernetes to manage and scale test environments.

Collaboration & Documentation

• Collaborate with developers, QA, and DevOps teams to improve the QA process.
• Write test plans, strategies, and design documents.
• Track issues using Jira and manage test cases (Xray optional).
• Analyze logs, investigate failures, and troubleshoot in staging and production.

Required Qualifications & Experience:

Must-Have:

• 3-5 years of experience in test automation or a related QA role.
• Strong programming skills in Python.
• Solid experience in API automation (Requests library) and UI automation (Playwright).
• Experience with CI/CD tools (Jenkins preferred).
• Experience with Docker & Kubernetes for test environments.
• Strong analytical, problem-solving, and debugging skills.
• Experience with Jira for tracking and reporting.
• Ability to work independently and proactively in a fast-paced environment.

Nice to Have:

• Experience with Kafka.
• Familiarity with Xray for test management.
• Knowledge of AWS cloud services.

Role Overview:

We are looking for a Senior-level Automation QA Engineer to join our team in Poland. The role will primarily focus on API testing (80%) with UI testing (20%). You will help design, enhance, and maintain automation frameworks, ensuring efficient and scalable testing.

Key Responsibilities:

Automation Framework & Strategy

• Contribute to designing and improving automation testing strategies.
• Develop and maintain automation frameworks for API, UI, and LLM validation.
• Ensure scalability, maintainability, and reusability of automation code.

Test Development & Execution

• API Testing: Develop automated API tests in Python using the Requests library.
• UI Testing: Create and maintain UI tests with Playwright.
• Integrate automated tests with Postman collections where applicable.
• Execute performance, regression, and functional tests.

Continuous Integration & Deployment

• Integrate automation tests into CI/CD pipelines (Jenkins preferred).
• Work with Docker and Kubernetes to manage and scale test environments.

Collaboration & Documentation

• Collaborate with developers, QA, and DevOps teams to improve the QA process.
• Write test plans, strategies, and design documents.
• Track issues using Jira and manage test cases (Xray optional).
• Analyze logs, investigate failures, and troubleshoot in staging and production.

Required Qualifications & Experience:

Must-Have:

• 3-5 years of experience in test automation or a related QA role.
• Strong programming skills in Python.
• Solid experience in API automation (Requests library) and UI automation (Playwright).
• Experience with CI/CD tools (Jenkins preferred).
• Experience with Docker & Kubernetes for test environments.
• Strong analytical, problem-solving, and debugging skills.
• Experience with Jira for tracking and reporting.
• Ability to work independently and proactively in a fast-paced environment.

Nice to Have:

• Experience with Kafka.
• Familiarity with Xray for test management.
• Knowledge of AWS cloud services.

 We're Hiring: Web Scraping Support Engineer (Remote)

Hello everyone! Massive is looking for a Web Scraping Support Engineer to join our fully remote team. If you dream in selectors, wake up parsing HTML, and genuinely enjoy helping people solve gnarly data extraction problems — this one's for you.

 What is Massive?
Massive is an infrastructure company powering data-driven innovation at scale. We operate a global proxy network, build managed APIs for search engines (SERP), and Web Unblocking API to bypass anti-bot measures for large-scale data collection and processing.

 Why This Role Is Different
Most support roles are reactive. This one isn't. You're the person customers trust when their scraping pipeline breaks at 2 AM, when a target site changes its structure overnight, when nothing works and nobody knows why. You don't just answer tickets — you solve problems that other engineers can't.

 Who We're Looking For
 

• Troubleshoots in Their Sleep: Broken selectors, anti-bot walls, rotating proxies, CAPTCHAs, headless browser quirks — you've seen it all and you fix it before your coffee gets cold
• AI is your best friend - you know how to leverage AI to be 10X faster and more productive
• Customer-Obsessed & Likable: You're the person customers ask for by name. You explain complex concepts in plain language and people genuinely enjoy working with you
• Can Scrape Anything, Anywhere: SPAs, paginated APIs, rate-limited endpoints, geo-restricted content — if it's on the web, you know how to extract it
• Consumes Data for Breakfast: You think in JSON, dream in XPath, and get excited about a well-structured dataset
• Relentlessly Organized: Your support board is pristine. Every ticket triaged, every follow-up tracked, every edge case documented. Nothing slips through — ever
• Curious Builder: When you notice the same issue three times, you don't just fix it — you automate the solution so it never comes back

 What You'll Be Doing
 

• Own the support board end-to-end with the support team — triage, prioritize, resolve, and follow up on every ticket
• Debug complex web scraping issues across proxy configurations, browser automation, and API integrations
• Help customers build, optimize, and fix their scraping pipelines
• Reproduce issues, identify root causes, and escalate bugs with full context to engineering
• Write documentation and guides that reduce repeat tickets

 Bonus Points
 

• Experience with Puppeteer, Playwright, Selenium or similar browser automation
• Hands-on with proxy networks and IP rotation strategies
• Familiarity with anti-bot systems (Cloudflare, Akamai, PerimeterX, DataDome)
• Working knowledge of Python, Node.js, or scripting languages for data extraction
• no satisfaction until all the work is done and then some

 Ready to Scrape the Future With Us?
Skip the generic resume. Show us something real — a scraper you built, a gnarly problem you debugged, a support process you transformed. We care about what you can do, not where you went to school.
If you read this and thought "finally, someone gets it" — trust that feeling. Apply now.

B2B AI SaaS Sales Representative — Sembly AI

Sembly AI helps professional teams turn meetings into actionable insights, automated workflows, and client-ready deliverables. We bring meeting intelligence and AI-powered productivity into the tools and processes businesses use every day.
 

We’re looking for an engaging, technically proficient sales professional who builds strong customer relationships and turns opportunities into revenue. You’ll own the sales cycle—from generating leads and running discovery to delivering demos, navigating requirements, and closing deals.
 

What you’ll do

• Build and close pipeline. Develop your own leads through targeted outreach, networking, and prospect research, while converting inbound interest into qualified opportunities.
• Lead consultative sales conversations. Understand customers’ workflows, pain points, and buying criteria. Deliver tailored demos that connect Sembly’s capabilities to measurable business value.
• Build lasting relationships. Establish trust with champions, decision-makers, and technical stakeholders through thoughtful conversations and consistent follow-through.
• Handle objections and sharpen competitive positioning. Address concerns around value, pricing, adoption, security, and alternatives. Create and maintain practical battle cards based on competitor research and real sales conversations.
• Navigate technical and compliance requirements. Identify integration needs involving APIs, MCP (Model Context Protocol), and webhooks. Coordinate SOC 2 documentation, security reviews, and technical discussions with the appropriate internal teams.
• Use AI to improve sales execution. Apply AI agents, research tools, and automation to prospecting, account preparation, personalized outreach, follow-ups, and CRM maintenance.
• Keep the CRM accurate and actionable. Maintain opportunity stages, next steps, stakeholder information, and reliable forecasts.
• Work closely with Marketing and Customer Success. Share buyer insights, refine messaging and campaigns, and ensure smooth handoffs with clear customer goals and expectations.
   

What you bring

• 3+ years of B2B SaaS sales experience, with demonstrated success closing deals and achieving revenue targets.
• A warm, engaging communication style, strong listening skills, and the ability to build rapport and credibility quickly.
• Strong discovery, presentation, negotiation, and objection-handling skills.
• Technical fluency: you learn software quickly, demonstrate it confidently, and explain technical concepts clearly to business audiences.
• Practical experience using AI tools and agents to support your sales process.
• Familiarity with enterprise buying processes, SOC 2 security reviews, and integration requirements involving APIs, MCP, and webhooks.
• Experience managing pipeline and reporting in a CRM; Attio experience is a plus.
• Confidence generating your own leads and independently moving opportunities forward.
• Excellent spoken and written English and the ability to collaborate across international teams.
   

What success looks like

A healthy pipeline that includes self-generated opportunities, consistent revenue delivery, accurate forecasts, and customers who enter onboarding with clear expectations. Your insights also help Marketing improve messaging and Customer Success support adoption.
 

Why Join Sembly? 

• Exciting Product: We are pioneers in a new AI-enabled product category.
• Product-Market Fit: We have thousands of users. The product works. We need you to pour fuel on the fire.
• Work Culture: We have a high-energy, high-performance, and fun working environment that you'll enjoy being a part of.

About the Role

We're looking for a curious and motivated Junior Backend Engineer to join our team. You'll be building backend services and REST APIs and working with AWS or Azure infrastructure.

Our projects use Python or C#, but since all of our code is written with AI, we are considering candidates with any OOP language, including JavaScript and Java. What matters is how you think about software: object-oriented design, APIs, and data.

We work in pairs — juniors are always paired with another junior or someone at a similar level, not just for code reviews, but for day-to-day coding, architecture decisions, and problem solving, with seniors close by whenever you need help. This is production work: you'll ship services that customers rely on, with the safety net of another teammate beside you.

The client is US-based, so the team works US business hours; for engineers in Ukraine, this means your working day ends around midnight Kyiv time. This role can be full-time or part-time, depending on your availability.

What You'll Work On

• Backend Services & APIs — build and maintain REST APIs and backend services for client platforms, with clear contracts and automated tests.
• AWS or Azure Infrastructure — work with cloud infrastructure on AWS or Azure, depending on the project.
• CI/CD using GitHub Actions or Azure DevOps pipelines.

Tech Stack

• Backend — Our projects use Python or C#, depending on the engagement. You do not need to know either one — all code is written with AI, and you'll learn the project's framework on the job.
• Cloud — AWS or Azure, depending on the engagement. Nice-to-have, not required.

Working Hours & Format

This role can be full-time or part-time, depending on your availability. It's fully remote. Our client operates on US business hours, so the schedule needs to align with US time zones — for engineers based in Ukraine, your working day will end around midnight Kyiv time.

Requirements

Solid fundamentals in OOP and comfort with at least one OOP language — it does not matter which.

Exposure to AWS or Azure is a plus, but not required — you'll pick up what you need on the job. We care more about your curiosity and attitude than your CV.

About the Role

We're looking for a curious and motivated Junior Backend Engineer to join our team. You'll be building backend services and REST APIs and working with AWS or Azure infrastructure.

Our projects use Python or C#, but since all of our code is written with AI, we are considering candidates with any OOP language, including JavaScript and Java. What matters is how you think about software: object-oriented design, APIs, and data.

We work in pairs — juniors are always paired with another junior or someone at a similar level, not just for code reviews, but for day-to-day coding, architecture decisions, and problem solving, with seniors close by whenever you need help. This is production work: you'll ship services that customers rely on, with the safety net of another teammate beside you.

The client is US-based, so the team works US business hours; for engineers in Ukraine, this means your working day ends around midnight Kyiv time. This role can be full-time or part-time, depending on your availability.

What You'll Work On

• Backend Services & APIs — build and maintain REST APIs and backend services for client platforms, with clear contracts and automated tests.
• AWS or Azure Infrastructure — work with cloud infrastructure on AWS or Azure, depending on the project.
• CI/CD using GitHub Actions or Azure DevOps pipelines.

Tech Stack

• Backend — Our projects use Python or C#, depending on the engagement. You do not need to know either one — all code is written with AI, and you'll learn the project's framework on the job.
• Cloud — AWS or Azure, depending on the engagement. Nice-to-have, not required.

Working Hours & Format

This role can be full-time or part-time, depending on your availability. It's fully remote. Our client operates on US business hours, so the schedule needs to align with US time zones — for engineers based in Ukraine, your working day will end around midnight Kyiv time.

Requirements

Solid fundamentals in OOP and comfort with at least one OOP language — it does not matter which.

Exposure to AWS or Azure is a plus, but not required — you'll pick up what you need on the job. We care more about your curiosity and attitude than your CV.

About the Role

We're looking for a curious and motivated Junior Backend Engineer to join our team. You'll be building backend services and REST APIs and working with AWS or Azure infrastructure.

Our projects use Python or C#, but since all of our code is written with AI, we are considering candidates with any OOP language, including JavaScript and Java. What matters is how you think about software: object-oriented design, APIs, and data.

We work in pairs — juniors are always paired with another junior or someone at a similar level, not just for code reviews, but for day-to-day coding, architecture decisions, and problem solving, with seniors close by whenever you need help. This is production work: you'll ship services that customers rely on, with the safety net of another teammate beside you.

The client is US-based, so the team works US business hours; for engineers in Ukraine, this means your working day ends around midnight Kyiv time. This role can be full-time or part-time, depending on your availability.

What You'll Work On

• Backend Services & APIs — build and maintain REST APIs and backend services for client platforms, with clear contracts and automated tests.
• AWS or Azure Infrastructure — work with cloud infrastructure on AWS or Azure, depending on the project.
• CI/CD using GitHub Actions or Azure DevOps pipelines.

Tech Stack

• Backend — Our projects use Python or C#, depending on the engagement. You do not need to know either one — all code is written with AI, and you'll learn the project's framework on the job.
• Cloud — AWS or Azure, depending on the engagement. Nice-to-have, not required.

Working Hours & Format

This role can be full-time or part-time, depending on your availability. It's fully remote. Our client operates on US business hours, so the schedule needs to align with US time zones — for engineers based in Ukraine, your working day will end around midnight Kyiv time.

Requirements

Solid fundamentals in OOP and comfort with at least one OOP language — it does not matter which.

Exposure to AWS or Azure is a plus, but not required — you'll pick up what you need on the job. We care more about your curiosity and attitude than your CV.

Techstack is a technology product engineering company that sets an example for high development standards in the IT industry. We empower each team member to influence the development of the product, company, and processes.

About the role:

We are looking for a Junior Manual QA Engineer for a long-term(4 years) part-time B2B engagement.

This opportunity is ideal for QA professionals who have initial commercial testing experience and are looking for an additional project alongside their current employment or freelance engagements.

Language requirements:

German: B2 or higher, with documented proof of proficiency.

English: B2 or higher, with documented proof of proficiency.

The project involves testing a multilingual web platform powered by a CMS, as well as a mobile application available on iOS and Android. The web platform supports more than 12 languages, making functional consistency, content accuracy, and user experience across different language versions important aspects of the testing process.

You will collaborate with an international, distributed team, contribute to testing activities, and help ensure a reliable experience for users across web and mobile platforms.

The role is primarily remote and includes occasional on-site testing sessions in Vienna, up to three days per year. Business travel expenses will be covered.

Requirements:

• At least 1 year of commercial software testing experience.
• ISTQB Certified Tester Foundation Level (CTFL) certification.
• Practical testing experience in at least one of the following areas:
  • Backend or API testing.
  • CMS testing.
  • Mobile application testing for iOS and/or Android.
• Familiarity with Agile methodologies.
• Ability to document test results and report software defects clearly.
• German proficiency at B2 level or above.
• English proficiency at B2 level or above.
• Documentary proof of both language levels, subject to the applicable certification requirements.

Responsibilities:

• Execute manual functional and regression tests for web and mobile applications.
• Follow existing test cases and contribute to maintaining test documentation.
• Identify, reproduce, document, and report software defects.
• Verify application functionality across different user scenarios and language versions.
• Support testing activities for CMS-based platforms, backend functionality, APIs, and mobile applications, depending on project needs.
• Collaborate with developers and QA colleagues to clarify issues and verify fixes.
• Participate in Agile team activities and communicate testing progress.
• Track defects and test execution results using Jira and Xray.
• Use Slack and Microsoft Teams to collaborate with team members.
• Communicate with German-speaking stakeholders and use English for collaboration where required.

Culture:

At Techstack, we care about how we build products — not only about the result, but also about the quality of the engineering process and the way we work together.

We encourage people to keep learning, share what they know, and take ownership of their work.

Tech Guilds — communities where specialists share knowledge, discuss technical solutions and approaches, and keep up with industry trends.

Meetups and knowledge sharing — opportunities to share your experience with colleagues and the wider tech community.

Mentoring and leadership — opportunities to learn from experienced colleagues, develop your expertise, and gradually take on more responsibility.

We believe that good products come from people who care about what they build, keep developing their expertise, and are comfortable both challenging ideas and being challenged.

What we offer

• A long-term international project engagement.
• Remote-first collaboration under a B2B contract.
• A part-time workload of approximately 45 hours per month, suitable for combining with other professional commitments.
• The opportunity to gain experience with web, CMS, and mobile testing in an international environment.
• Collaboration with a distributed team.
• Occasional business trips to Vienna, up to three days per year, with travel expenses covered.

See yourself in this role? Send us your resume and let’s start the conversation!

We are the creators of a new fintech era!

Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.

We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.

The future of Web3 starts with you: 
 

Requirements
 

• Hands-on experience in Web3 / crypto – worked on crypto projects or inside crypto companies, not adjacent to them.
• Able to communicate inside the industry: accurate terminology with founders, exchanges and infrastructure teams; understands how deals in this market are structured.
• 2+ years in business development / sales with self-sourced pipeline: cold outreach, first contact, qualification, discovery calls.
• Proven ability to move a prospect from first call to a committed, warm opportunity: discovery, objection handling, next-step discipline, follow-up until a decision.
• Closing experience on mid-size tickets – candidate must be able to name deal sizes, cycle length and their own role in each. Closing is not the daily core of the role, but the hire must be able to take a deal to signature.
• Fluent spoken English (C1+), verified in a live call.
• Ukrainian – native (preferred).
• Hands-on work in any CRM (HubSpot, Pipedrive, Attio, Salesforce or equivalent): pipeline hygiene, stage discipline, logging every touch.
• Cold outreach at volume: LinkedIn Sales Navigator, Telegram, email sequencing.
• Ability to work across multiple projects/products in parallel and enter unfamiliar verticals quickly – research a new field, build a message that holds up, start contacting.
• High-volume orientation: comfortable spending most of the day in conversation, calls and follow-ups.
   

Responsibilities
 

• Source own pipeline through cold outreach across LinkedIn, Telegram, X/Twitter, email and niche industry platforms.
• Build and maintain target lists and segmentation for assigned directions.
• Run first contact, qualification and discovery calls.
• Convert cold contacts into warm, qualified opportunities and hand them over with full context.
• Keep warm opportunities moving: follow-ups, next steps, objection handling – the deal does not stall in this role's hands.
• Close mid-size deals independently as the scope expands into the full cycle.
• Maintain the CRM: every contact, stage, next step and outcome logged.
• Test and iterate messaging and channels per segment; report what converts.
• Ramp into new products, networks and verticals as assigned, including unfamiliar fields.
• Weekly reporting on outreach volume, calls held, warm opportunities and pipeline movement.
   

Working terms
 

• Master cutting-edge technologies and become an expert in the most innovative industry.

Work with the Fintech of the Future:

• Develop your skills in digital finance and shape the global market.

Take Your Professionalism to the Next Level:

• Gain unique experience and be part of global transformations.

Drive Innovations:

• Influence the industry and contribute to groundbreaking solutions.

Join a Strong Team:

• Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:

• Modern equipment.
• Comfortable working conditions, and an inspiring environment to help you thrive.
• 24 calendar days of paid leave.
• Additional days off for national holidays.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
 

  Let’s Build the Future Together!

WhiteBIT offers all candidates an equal opportunity to join the team. All hiring decisions are made without regard to race, national origin, gender identity or sexual orientation, age, religion, disability, medical condition, marital status, familial status, veteran status, or any other legally protected characteristic of an individual.