Jobs at Djinni

Evoplay is one of the leading GameDev providers, recognized for its innovative approach to game development and technological solutions. The key to this success is the teamwork of like-minded people who are passionate about a common goal and love games.

Position Overview:

As a Jira and Confluence Administrator, you will be responsible for the administration, configuration, and maintenance of our Jira and Confluence instances. You will play a critical role in ensuring the smooth operation and optimal utilization of these platforms to support our teams in project management, collaboration, and knowledge sharing.

Key Responsibilities:

1. Platform Administration:

• Administer Jira and Confluence instances, including user management, permissions configuration, and customization of workflows, issue types, and fields. Jira (server and cloud), сonfluence, Bitbucket, Crowd)

• Perform regular maintenance tasks such as upgrades, patches, and backups to ensure system reliability and performance.

2. Configuration and Customization:

• Configure Jira projects and Confluence spaces to meet the specific requirements of our teams and projects.

• Customize Jira workflows, screens, and dashboards to streamline processes and enhance productivity.

3. Integration and Automation:

• Integrate Jira and Confluence with other tools and systems used within the organization to facilitate seamless data flow and collaboration.

• Implement automation rules and workflows using Jira and Confluence plugins to optimize task management and documentation processes.

4. User Training and Support:

• Provide training and support to users on Jira and Confluence functionality, best practices, and troubleshooting techniques.

• Serve as the primary point of contact for user inquiries and technical issues related to Jira and Confluence usage.

5. Corporate IT Services:

• Administer other corporate IT services such as Gitlab, LDAP, GCP.

• Ensure the proper functioning and integration of these services with other business applications and systems.

Qualifications:

• Experience in a similar position for 2 years.

• Experience with Atlassian stack:

- Jira

- Confluence

- Bitbucket

- Crowd

• Understanding of the functioning of Linux systems.

We offer:

• L&D center with courses for employees and top managers;

• Rotation program;

• Medical іnsurance;

• Paid leave;

• Sick days;

• Self-learning library, access to paid courses;

• Stable payments;

• Evoplay discount program;

• Flexible work schedule / remote work;

• Group discussions and individual sessions with a psychologist.

We're looking for Customer Support Agents to join our growing iGaming project. If you enjoy helping people, solving problems, and working in a fast-paced environment, we'd love to meet you!
 

What you'll be doing:

• Assisting players with their questions via live chat, email, and phone
• Helping customers with account-related inquiries, payments, bonuses, promotions, and general platform navigation
• Investigating customer issues and working with internal teams to ensure timely resolutions
• Providing friendly, professional, and accurate support while delivering an excellent customer experience
• Following internal procedures and maintaining high-quality service standards
   

What we're looking for:

• Previous experience in customer support is a plus (especially in iGaming, e-commerce, or SaaS), but we're also happy to train motivated candidates
• C1+ English (both written and spoken) is required
• Excellent communication and problem-solving skills
• Ability to stay calm and professional when handling customer concerns
• Comfortable working rotating shifts:
  • Morning: 07:00 – 15:00
  • Evening: 15:00 – 23:00
  • Night: 23:00 – 07:00 (night shifts include additional bonuses 💰)
• Strong attention to detail and willingness to learn
   

What you'll get:

• 100% remote work
• Competitive salary with night shift bonuses
• Paid onboarding and full training
• Friendly and supportive international team
• Opportunities for professional growth within the iGaming industry
• A dynamic environment where every day brings new challenges
   

If you're passionate about helping people and want to build your career in one of the fastest-growing industries, we'd love to hear from you! 🚀

About Masthead Data

Masthead Data is a data observability and BigQuery cost optimization platform built on a zero-data-access architecture — we operate exclusively on audit logs and metadata, and never touch our customers' underlying data. That constraint is our core differentiator and shapes every engineering decision we make. We work with enterprise customers who manage millions of tables and care deeply about security, auditability, and doing more with less. We uncover hidden data issues in real-time and drive hundreds of thousands of dollars in monthly savings.

The Role

We're looking for a full-time remote Senior Backend Engineer to own significant parts of our platform end to end — from architecture through production. You'll work on systems that process large volumes of audit-log and metadata events, detect issues in production data environments, power our FinOps recommendations, and integrate deeply with GCP. This is a high-ownership role with real influence over technical direction.

What you'll do

• Design, build, and operate backend services in Kotlin (Spring Boot) running on GKE
• Work across our data pipeline: BigQuery, Pub/Sub, PostgreSQL, and GCP-native tooling
• Build and refine the systems behind our cost optimization and observability features
• Manage infrastructure as code with Terraform, and help evolve our multi-tenant, per-customer project architecture
• Uphold and extend our zero-data-access security model — least-privilege access, granular controls
• Contribute to architecture decisions, code reviews, and the technical growth of the team

What we're looking for

• Strong backend experience with Kotlin (or Java with a genuine willingness to move to Kotlin) and Spring Boot
• Hands-on experience running production workloads on Kubernetes, ideally GKE
• Ownership: you can take an ambiguous problem and drive it to a production result
• Solid grounding in GCP — BigQuery, Pub/Sub, IAM, and related services
• Comfort with infrastructure as code, particularly Terraform
• Experience with PostgreSQL and designing data-intensive backend systems
• A security-conscious mindset and appreciation for operating within tight data-access constraints

Nice to have

• Experience with data observability, FinOps, or cloud cost optimization
• Familiarity with multi-tenant SaaS architecture and cross-tenant isolation patterns
• Background working with enterprise customers and their security requirements

Why Masthead Data

You'll join a small, senior team solving genuinely hard problems where the architectural constraints are the interesting part. Your work will be visible to enterprise customers from day one, and you'll have room to shape both the product and how we build it.

We’re seeking a Senior Affiliate Manager (LATAM focus) to drive growth and foster strong, long-term partnerships.
If you have proven experience in affiliate marketing within LATAM, understand local traffic nuances, and know how to scale campaigns with high-performing partners, this role is for you.

Responsibilities:

• Manage and grow existing affiliate partnerships in LATAM markets
• Attract, onboard, and develop new partners across the region
• Collaborate with internal teams to align strategy and performance goals
• Plan, launch, and optimize performance marketing campaigns

• Track, analyze, and interpret campaign data to improve ROI and scaling opportunities

   

Requirements:

• 3+ years of experience in iGaming affiliate marketing (LATAM experience is a strong advantage)
• Deep understanding of different traffic sources (SEO, PPC, social, influencers, native, etc.)
• Strong market research skills with the ability to structure insights clearly and actionably
• Strong analytical skills: ability to work with performance data, identify trends, and make data-driven decisions to optimize campaigns
• Solid understanding of affiliate models, funnels, and player behavior.
• Strong communication skills and ability to work cross-functionally

What we offer:

• Fully remote work with flexible schedule
• Competitive salary + regular performance reviews + initiative-based bonuses
• Fast hiring process — 2–3 stages max
• 24 paid vacation days + 10 sick days annually
• Strong, experienced team that actively shares knowledge
• Real budgets and freedom to test and scale your ideas
• Transparent processes with minimal bureaucracy
• Friendly team culture: networking, conferences, events, and great internal vibe

We don’t just hire Affiliate Managers — we grow them into market leaders.

We are looking for an Enterprise & Cloud Security Manager to lead and mature our enterprise security function across cloud, network, identity, endpoint, and data domains. In this role, you will own the design and enforcement of security guardrails across a hybrid environment. You will lead a team of security engineers, drive the evolution toward a cloud-first model, and track and report on enterprise security metrics.
 

Responsibilities
 

• Own and lead Enterprise & Cloud Security across cloud, network, identity, endpoint, and data domains
• Define and enforce enterprise security guardrails, approving low/medium-risk platform exceptions
• Lead CSPM/CNAPP/CWPP, WAF, DNS security, and IaC scanning across cloud environments
• Manage cloud IAM and security-group guardrails in close collaboration with Platform and SRE teams
• Operate and mature endpoint security (EDR/XDR/MDM) across managed devices, including hardening and telemetry health
• Own data security and cryptography controls: KMS, secrets management, PKI, and certificate lifecycle
• Lead, mentor, and develop a team of security engineers (4 direct reports — Cloud & Network, Endpoint, IAM, Data Security & Cryptography)
• Track, analyze, and report enterprise security metrics

Requirements
 

• 5+ years of experience in managing and developing security teams
• Proven track record in hands-on cybersecurity engineering roles
• Enterprise-level background
• Practical experience with on-premises environments
• Solid experience with networking
• Hands-on experience with cloud platforms
• Broad experience across cloud posture, network, identity, endpoint, and data protection security domains
• Experience with CSPM/CNAPP/CWPP tooling and cloud guardrails (WAF, DNS security, IaC scanning)
• Experience with cloud IAM and security-group/IaC security patterns
• Experience operating EDR/XDR and MDM solutions
• Experience with KMS, secrets management, PKI, and certificate management
• Ability to enforce security controls without unnecessarily blocking delivery for Platform/SRE/DevOps teams
• Upper-Intermediate English and higher

Will be a plus

• Higher education in Computer Science, Information Security
• Background in fintech, brokerage, trading platforms, payments, or other regulated environments
• Track record of building or maturing an enterprise/cloud security function from an early stage
• Familiarity with tools such as Wiz, Panorama, Elastic Defender, Entra, or CyberArk
• Knowledge of Kubernetes/container security and cloud-native architectures
• Exposure to SOC 2, ISO 27001, or DORA compliance frameworks

We offer

• 20 paid vacation days per year
• 10 paid sick leave days per year
• Public holidays as per the company’s approved Public holiday list
• Medical budget
• Opportunity to work remotely
• Professional education budget
• Language learning budget
• Wellness budget (gym membership, sports gear and related expenses)

💼About The Company
We’re a fast-growing premium D2C skincare brand building more than just products.
Our mission is to bring clinic-grade skincare into everyday homes — delivering professional-level results without the high cost, complexity, or intimidation of in-clinic treatments.
We combine advanced formulations with strong branding and performance-driven marketing. Creative is a core driver of growth.

🌟Role Overview
We’re hiring a hybrid creative who can edit high-converting videos, design premium visuals, and generate hyper-realistic AI content.
This is a performance-driven role. You won’t just execute — you’ll own outcomes, contribute to strategy, and help scale creative output across the business.

What We’re Looking For
📅 Minimum 3+ years of relevant experience in video editing/design
📈 Proven exposure to performance marketing creatives
🧠 Strong understanding of human psychology and buyer behavior
🎯 Ability to translate insights into high-converting creatives
📊 Understands hooks, retention, and ad fatigue
🎞️Strong Editing + Design Skills (Premiere Pro / CapCut / Final Cut, Photoshop or equivalent)
✨ Ability to create clean, premium, brand-aligned visuals
🤖 Experience with hyper-realistic AI video, image generation, voiceovers, and scripting
⚡ Highly productive, self-motivated, and strongly focused on execution and getting things done
🚀 Takes ownership, maintains high output, thrives in fast-moving environments, and continuously learns

Key Responsibilities
🎬 Edit high-performing D2C ad creatives (Meta, TikTok, YouTube)
📱 Turn raw/UGC footage into conversion-focused videos
🎨 Design static creatives (ads, thumbnails, landing visuals)
🤖 Generate hyper-realistic AI videos and visuals
🪝 Create scroll-stopping hooks and compelling storytelling
🔄 Repurpose content across multiple platforms
⚡ Rapidly iterate on winning creatives
🧠 Use AI tools to accelerate production and ideation
🤝 Collaborate on creative strategy (not just execution)
🚀 Ensure high output and creative velocity across projects

Nice to Have
💄 Experience with D2C / skincare / beauty brands
📣 Understanding of direct response marketing
🤝 Experience working with creative strategists or media buyers

Why Join Us
📈 Work directly on high-impact, revenue-driving creatives
🛍️ Gain exposure to the entire D2C business ecosystem
🤖 Be at the forefront of AI implementation in a fast-scaling brand
📚 Continuous learning and growth across creative, marketing, and AI
💰 Compensation based on experience and performance

🚀 If you’re performance-driven, AI-forward, and serious about your craft — this role will give you ownership, speed, and real impact.

We are looking for a Principal FPGA Timing Specialist to analyse and optimise existing FPGA designs, resolve complex timing failures, and improve the overall compilation workflow.

The role requires approximately 5–6 hours of daily overlap with the Hong Kong engineering team (start of the workday at 8:00–9:00 a.m. Kyiv time)

About Digis
Digis is a global software development company with 200+ specialists delivering custom software development and staff augmentation services to clients in the US, UK, and EU.
We build long-term partnerships and focus on transparency, trust, and measurable business results.

About the project
Company develops FPGA-based hardware that recreates classic video-game systems at the hardware level. The project involves a mature FPGA codebase built on Intel/Altera technology. The main goal is to eliminate timing failures, reduce the number of compilation seeds required for successful builds, and shorten prolonged FPGA build times.

Key responsibilities

• Analyse failed timing paths, path delays, clock skew, and routing congestion in Quartus
• Review and optimise SDC constraints and static timing analysis results
• Refactor Verilog modules and restructure pipelines or FPGA architectures
• Resolve complex timing-closure and CDC issues
• Optimise high-speed digital interfaces
• Reduce compilation iterations and overall FPGA build time
• Document identified issues, implemented solutions, and recommended practices

Requirements

• 3+ years of hands-on Verilog FPGA design experience
• Deep practical experience with Intel/Altera FPGA architecture
• Upper-Intermediate+ English level

We Offer

• 20 paid vacation days per year
• 5 paid sick leaves per year (no medical documents required)
• Personalized development plan with training compensation
• English courses compensation
• Work equipment if needed (PC / laptop / monitor)
• Flat and transparent internal communication
• Opportunity to switch between projects and technologies within Digis

We are looking for a Head of VIP to build and scale the VIP function within a fast-growing crypto casino. This is a hands-on leadership role focused on proactive, high-touch player management and full ownership of the VIP cohort's revenue and retention.

You will set the standard for how high-value players are managed, lead the VIP team, and align cross-functional stakeholders around retention outcomes.

Key Responsibilities

• Own VIP segment NGR, retention, and reactivation.
• Drive proactive player management: read play and deposit patterns, anticipate churn, and intervene before a high-value player goes dormant.
• Run VIP segmentation and tiering. Promote rising players early; identify at-risk whales and protect them.
• Own personalized comps, bonuses, and gifting within strict margin discipline (comp-to-NGR).
• Build and maintain VIP dashboards leadership needs to see cohort health in real time.
• Keep the program inside compliance and responsible gambling boundaries.
•  

Team Leadership

• Build, lead, and coach the VIP team. Set service standards, coverage, and response SLAs.
• Establish workflows and rituals for proactive player outreach and escalation.
• Foster a culture of ownership, data discipline, and relationship-driven service.

• Work cross-functionally with CRM, Payments, Product, Risk, and Compliance to keep the VIP experience seamless.

   

Requirements

• 5+ years in iGaming VIP or player development, with time spent leading people or owning a cohort's revenue.
• Proven track record of growing VIP retention and revenue, with numbers to back it.
• Deep understanding of high-value player psychology and the full player lifecycle.
• Data discipline: cohorts, LTV, churn, comp ROI, dashboards over gut feel.
• Hands-on comp and bonus management within margin constraints.
• Crypto casino experience and comfort with crypto-native high rollers.
• Experience building or scaling a VIP function from an early stage.
• English B2 or higher.

Mindset

• Autonomous with high ownership.
• Proactive, not reactive - you reach the player before the player reaches the exit.

• Relationship-driven but data-disciplined.

   

What We Offer

• Competitive compensation.
• Challenging and high-impact tasks that drive professional growth.
• Strong senior-level team and collaborative environment.
• Fast decision-making and minimal bureaucracy.
• Remote-first setup - work from anywhere or visit the office.
• Investment in learning: courses, certifications, and internal knowledge sharing.
• Healthy work-life balance: no overtime, no micromanagement.
• Modern equipment: MacBook, Starlink, PowerBank.
• Bonuses for maternity leave and childbirth.
• Additional internal perks and benefits.

Design Key Studio is AI-native software development agency working with startups and businesses primarily in the US market. We build SaaS products, websites, and mobile apps, and help clients integrate AI into their workflows and products, on fixed-price engagements. As we grow, we're looking for a driven, hands-on Business Development Manager to build our client acquisition and partnerships function from the ground up.
We're hiring a Business Development Manager who will own new client acquisition, partnership development, and opportunity generation full-time. This is a foundational hire — we don't yet have a sales or marketing team, so you'll start hands-on, doing the outreach, prospecting, and early-stage deal work yourself. As this function grows and results come in, this role has the potential to evolve into a Head of Revenue / CRO position, owning a full sales, partnerships, and revenue team.

What You'll Do

• Own the full new-business cycle: prospecting, outreach, qualification, and moving opportunities through the pipeline
• Build and run outbound strategies to reach startup founders and companies in the US market
• Identify, develop, and manage partnership opportunities (referral partners, agencies, complementary service providers, etc.)
• Set up the tools, channels, and processes for consistent lead generation
• Collaborate closely with the CEO on client calls and deal closing

• Track pipeline, opportunities, and conversion metrics, and report on progress

   

What We're Looking For

• Proven experience in business development / sales, ideally within IT outsourcing or software development services
• Experience targeting or working with the US market
• Strong English — you'll be reaching out to and corresponding with US-based prospects
• A self-starter mindset — comfortable building something from zero with high ownership and little existing infrastructure
• A strong sense of ownership — comfortable making decisions and moving things forward independently, without needing close oversight
• Understanding of how web/app development outsourcing services are sold
• Comfort with outbound tools

Nice to Have

• Existing network or connections within the US startup ecosystem
• Experience building a sales/BD function or process from scratch

What We Offer

• Competitive salary with regular reviews
• Support for individual entrepreneurs with accounting assistance
• Fully remote work
• A clear path for professional development and growth
• A friendly team environment and engaging team-building activities (online and offline)

Headway Inc is a global tech company, revolutionizing lifelong learning by creating digital products for over 170 million users worldwide. Our mission is to help people grow. We’re proud to be ranked 4th among the World’s Top EdTech Сompanies by TIME magazine. We believe lifelong learning should be accessible, personalized, and impactful to each individual. That’s how we change the world and why we bring together exceptional minds.
 

The core of our achievements is our team. We believe in people and shared values SELECT. That’s why, together with Copywriting Lead Anna Korostashovets, we are looking for a Creative Copywriter who will strengthen the Nibble brand and build meaningful relationships with users through compelling communication.
 

What product will you be working on?

Nibble is an all-around knowledge app for adult learners. It offers short, interactive lessons on a variety of topics, from art to math. Nibble has been featured as App of the Day in over 50 countries, including the US, the UK, and Canada.
 

This role is your calling if you:

• Shape strategy, not just copy — your words influence product decisions and business outcomes
• Own the voice — build Nibble's brand communication from the ground up
• See the impact — watch your copy move metrics and connect with millions of learners
   

What you'll do:

• Craft social-first content: Write engaging posts for Instagram, TikTok, and Threads that stop the scroll and spark curiosity
• Build the voice: Own and evolve Nibble's Tone of Voice — create guidelines, run internal workshops, and make sure every word feels like Nibble
• Drive creative strategy: Develop ad copy, messaging frameworks, and campaign ideas that resonate and convert
• Shape the brand: Write taglines, campaign names, and key messaging that define how millions experience Nibble
• Collaborate across teams: Work closely with growth marketing, design, product, and other functions to align copy with strategy
• Test and iterate: Apply a data-driven mindset — form hypotheses, analyze performance, and refine based on what works
• Write across formats: From punchy headlines to long-form content, landing pages to paid ads — your versatility will shine
   

What you need to join us:

• 2+ years writing marketing copy in English with a portfolio that showcases range and creativity
• Content marketing or agency experience that taught you how to adapt, collaborate across teams, and deliver under deadlines
• Format versatility: Confident writing for social media, ads, landing pages, and adapting tone for different funnel stages
• Clarity is your superpower: You make complex ideas simple and engaging, backed by strong research and fact-checking skills
• Data-informed approach: You create with intuition but validate with metrics — test, analyze, iterate
• English proficiency: B2+/C1 level — you write like a native or close to it
• Alignment with our SELECT values
   

What do we offer:

• Work within an ambitious team on a socially impactful education product.
• An office with a reliable shelter, generators, satellite internet, and other amenities.
• Access to our corporate knowledge base and professional communities.
• Personal development plan.
• Compensation for English language learning, external training, and courses.
• Medical insurance and full sick leave compensation.
• Company doctor and massage in the office.
• Sports activities: running, yoga, boxing, and more.
• Corporate holidays: we go on a week-paid holiday to rest and recharge twice a year. Besides that, we provide 20 paid vacation days per year.
• Supporting initiatives that help Ukraine. 
   

Are you interested? Send your CV!

Our client is looking for a proactive SMM Specialist who can independently drive social media growth, create engaging content strategies, and scale audience engagement across multiple platforms.

Role Overview:You’ll become part of a growing marketing team of 50+ professionals, including Affiliate, Media Buying, SEO, Design, and Technical teams, working in a fast-paced international environment where creativity, testing, and speed are highly valued. We are looking for a strong SMM Specialist who can take ownership of social media direction, generate ideas independently, and build scalable content and audience growth strategies across multiple platforms and markets.Key Responsibilities:

• Develop and execute social media strategies for multiple brands and GEOs;
• Create and manage content plans aligned with marketing and business goals;
• Lead content production together with designers, editors, and external creators;
• Launch and manage social media campaigns focused on audience growth and engagement;
• Work with paid promotion and advertising campaigns across different social media platforms;
• Collaborate with Media Buying teams on testing, scaling, and audience targeting strategies;
• Analyze performance metrics and optimize content strategy based on data;
• Monitor trends, competitors, platform updates, and emerging content formats;
• Generate and test new hypotheses for audience acquisition and retention;
• Work closely with Affiliate, Media Buying, and Product teams to align communication and campaigns;
• Participate in launching and developing new social media channels and communities;
• Prepare performance reports with actionable insights and recommendations;
• Maintain high content quality and consistency across all platforms;
• Proactively identify growth opportunities and suggest improvements to current processes.

Required Skills & Experience:

• Upper-Intermediate English or higher. Portuguese or Spanish will be an advantage;
• 3+ years of experience in SMM, digital marketing, or content marketing;
• Strong understanding of modern social media platforms, algorithms, and content mechanics;
• Experience working with paid advertising tools on social media platforms;
• Experience building content strategies focused on growth and engagement;
• Strong analytical skills and ability to work with performance metrics;
• Experience managing multiple projects and priorities simultaneously;
• Strong communication and organizational skills;
• Creative thinking combined with a data-driven approach;
• Understanding of trends in influencer marketing, short-form content, and community growth;
• Experience with AI tools for content creation and workflow optimization will be an advantage;
• Experience in iGaming, betting, or affiliate marketing will be a strong advantage.

The company guarantees you the following benefits:

• A positive workplace atmosphere that creates a culture of collaboration and support, making it a place you'll love working in;
• Competitive compensation and regular career development reviews;
• Flexible working hours and remote working options, you'll enjoy the freedom that the company provides;
• A generous vacation and sick leave policy, allowing you to take time off and enjoy a work-life balance;
• Financial assistance for professional development, helping you stay ahead of the curve and love your career path;
• Educational Allowances that give you the opportunity to expand your knowledge and experience;
• You'll have a monthly allowance for personal activities, giving you the opportunity to pursue your interests and hobbies outside of work;
• A comprehensive health insurance plan, depending on your current location;
• Referral program with financial rewards for bringing top talent to the company;
• Engaging in team-building activities and corporate parties.

Interview process:

• HR Interview with the Recruiter;
• Technical interview with a Team Lead;
• Final interview with the team;
• Final decision.

If you find this opportunity right for you, don't hesitate to apply or get in touch with us if you have any questions!

Workload: full-time, remote
Start: asap
Duration: long-term
Location: any
English: B2

Technical requirements (general)
- 3+ years of production blockchain experience in BTC. Multi-protocol experience (strongly preferred).
- Java + Spring Boot + SQL
- Familiarity with test-driven development (TDD) and/or behaviour-driven development (BDD) as working practices, writing tests before or alongside implementation.
- Familiarity with Domain-Driven Design principles.
- Comfortable working in a monorepo structure with shared libraries, cross-squad code visibility, and coordinated CI/CD pipelines.
- Proactive communication, raising blockers, design concerns, and cross-squad dependencies.
- Written and verbal communication in English must be at a professional level.

Technical requirements (specific)
- Deep Bitcoin protocol expertise: PSBT format (BIP-174 and subsequent updates), UTXO management and coin selection algorithms, SegWit transaction structures, script types and descriptor formats (Taproot out of scope).
- Multi-signature coordination: BIP-48 (multi-sig derivation paths), BIP-67 (lexicographic key sorting), P2WSH script construction, PSBT combination and finalisation workflows.
- Fee estimation: Mempool analysis, RBF (Replace-By-Fee) and CPFP (Child-Pays-For-Parent) fee bumping strategies, fee rate prediction.
- Transaction construction: Witness data assembly, BIP-143 (SegWit sighash), DER signature encoding, low-S enforcement. Familiarity with sighash types. SIGHASH_ALL is the production default for custody; engineers should understand the full sighash taxonomy for validation and edge-case handling but implementation focuses on SIGHASH_ALL.
- Transaction lifecycle and remediation: Stuck transaction detection via mempool monitoring, RBF and CPFP execution for fee bumping, handling transactions that remain unconfirmed for extended periods, and managing the operational decision of when to replace vs wait.
- UTXO indexing and balance management: Experience with UTXO set tracking, balance computation from unspent outputs, UTXO consolidation strategies during low-fee windows, and address-level balance monitoring for deposit detection.
- Address management: Gap limit handling for HD wallets, change address allocation from internal derivation branch (m/84'/0'/0'/1/*), address reuse prevention, and descriptor-based address discovery for wallet import and recovery scenarios.
- Chain semantics and failure modes: Understanding of Bitcoin's probabilistic finality (confirmation depth vs settlement assurance), dust output limits and their implications for UTXO management, fee spike behaviour during congestion events (e.g. ordinals, inscription surges filling blocks for extended periods), double-spend detection for unconfirmed transactions, and the operational difference between a transaction that is "broadcast" vs "in mempool" vs "confirmed at depth N." Engineers must understand that Bitcoin has no concept of a "failed" transaction that consumes fees; a transaction either confirms or it doesn't, and unconfirmed transactions can be replaced or may eventually confirm unexpectedly.
- Production experience: Operating Bitcoin custody or wallet infrastructure at institutional scale, not testnet-only or personal wallet experience.

Candidate's responsibilities
Bitcoin wallet management, UTXO handling, transaction construction (PSBT, SegWit), multi-signature coordination, fee estimation.

Peachy is a US-based eCommerce studio specializing in Shopify strategy, design, development, and conversion-focused digital experiences for growing consumer brands.

We partner with ambitious eCommerce companies to build high-performing websites, custom functionality, and scalable digital experiences. Our work combines design, engineering, ecommerce strategy, and conversion-focused thinking to create solutions that not only look great, but perform.

We move quickly, operate with minimal bureaucracy, and hold a high standard for quality. Ownership, accountability, communication, and attention to detail are core to how we work.
 

About The Job

We’re looking for an experienced E-commerce QA Engineer who has hands-on experience testing Shopify websites and digital commerce experiences. You’ll serve as the final quality checkpoint before launch, ensuring every website is polished, reliable, and ready for real customers. This role is ideal for someone who understands the e-commerce customer journey and knows how quality directly impacts conversion, user experience, and business performance.
 

Responsibilities

• Own the manual QA process across Shopify projects from development through launch.
• Test new features, user journeys, and business workflows across Shopify and Shopify Plus stores.
• Reproduce, document, prioritize, and communicate bugs with clear reproduction steps and supporting evidence.
• Perform regression testing to ensure new releases do not impact existing functionality.
• Validate integrations, APIs, checkout flows, payment methods, customer accounts, subscriptions, and other critical e-commerce functionality.
• Review websites from the customer’s perspective to identify usability and user experience improvements.
• Test websites across multiple browsers, devices, and screen sizes.
• Collaborate closely with developers, designers, and project managers to ensure high-quality releases.
• Proactively identify risks, edge cases, and opportunities to improve overall product quality.
   

Requirements

• 3+ years of professional experience as a QA Engineer focused on e-commerce websites.
• Hands-on experience testing Shopify or Shopify Plus stores.
• Experience working for a Shopify agency, digital agency, or consumer e-commerce brand.
• Strong understanding of the complete online shopping experience, including product pages, collections, cart, checkout, customer accounts, subscriptions, and third-party integrations.
• Experience with API testing using Postman.
• Strong understanding of QA methodologies, regression testing, bug reporting, and test documentation.
• Exceptional attention to detail with the ability to identify issues others may overlook.
• Strong written and verbal communication skills.
• A proactive, ownership-driven mindset with a passion for improving product quality—not just reporting bugs.
   

Nice to Have

• Experience testing third-party Shopify apps and e-commerce platforms such as Klaviyo, Recharge, Gorgias, Loop, or similar tools.
• Familiarity with GA4, Hotjar, Microsoft Clarity, or other analytics and user behavior platforms.
• Exposure to automated testing tools or an interest in learning automation testing.
   

What We Offer

• Fully remote work with a collaborative and supportive team.
• The opportunity to work on high-impact Shopify projects for leading U.S. e-commerce brands.
• A fast-paced agency environment where you’ll work across a variety of brands, industries, and storefront experiences.
• The opportunity to influence QA processes, improve quality standards, and make a meaningful impact on every project.
• Professional development support, including courses and English learning.
• A team that values ownership, communication, continuous improvement, and delivering exceptional work.

Mobilunity is a Ukrainian-based and operated provider of software engineering teams. Our typical clients are European, American and Japanese startups and small-to-mid sized companies working with our teams as equal extensions to their own software departments. With our collaboration model, engineers get direct access to the client’s technical management and work hand-in-hand with their peers both on the client’s side and in Ukraine. We as the Vendor ensure all non-tech questions are solved in a supportive manner. Joining Mobilunity you will get the best from both worlds — strong support and a big community locally, and an ambitious international team.

We are expanding our sales team and are looking for a highly independent Business Development Manager to drive new client acquisition for our staff augmentation and dedicated development team services. This is a true New Business Hunter role, focused on proactively identifying prospects, opening new doors, building relationships from scratch, and leading the entire outbound sales cycle through to signed contracts. This position is dedicated to winning new business rather than managing existing accounts or customer success.

Key Responsibilities:
● Independently identify and acquire new clients for IT staff augmentation / dedicated teams services;
● Build and maintain a healthy pipeline through outbound sales activities, networking, referrals, partnerships, and industry events;
● Represent the company at industry conferences, networking events, and business meetings across Europe;
● Lead the entire sales cycle from prospecting to contract signing;
● Conduct discovery calls, identify client needs, and position relevant service offerings;
● Collaborate with recruitment, marketing, and account management teams to ensure proposed solutions are realistic and aligned with client expectations;
● Prepare commercial proposals and run the negotiations;
● Build long-term client relationships that can expand into strategic partnerships and account growth opportunities;
● Maintain accurate pipeline visibility and sales forecasting.
 

Requirements:
● Proven experience selling IT outstaffing / staff augmentation / dedicated development teams and/or Recruitment services;
● Strong understanding of the operational realities of service-based businesses and client delivery models;
● Demonstrated track record of sourcing and closing new clients independently;
● Experience converting industry events, conferences, and networking activities into business opportunities;
● Self-driven and highly autonomous;
● Strong ownership mentality;
● Advanced level of English (written and spoken).

Joining the team you will get: 

● The friendliest community of like-minded IT professionals. 

● Open knowledge-sharing culture with exclusive access to experienced specialists eager to exchange expertise across a wide range of modern technologies; 

● Flexible time-off policy, including 18 weekdays of paid time off per year, sick leave coverage, and 5 additional wellness days per year that do not require medical documentation; 

● Competitive compensation; 

● Flexibility to cooperate remotely or from our Kyiv office, equipped with a generator and Starlink to ensure uninterrupted operations; 

● Comfortable office environment with separate rooms for individual teams, quiet workspaces, and dedicated areas for relaxation; 

● Corporate events, numerous interest groups.

English B2-C1

Now we are looking for a Billing Support Specialist to join our team, where you'll manage billing-related customer inquiries, process refunds, cancellations, and chargebacks, and help protect our revenue and account integrity while delivering a smooth, transparent payment experience for our users.

What you’ll do:

• Effectively address customer inquiries via live chats, emails, and tickets in Zendesk (specializing in billing issues, subscription management, and payment troubleshooting).
• Process refunds, cancellations, chargebacks, and pre-chargeback alerts (Ethoca, Verifi, RDR) to mitigate revenue loss and protect account integrity.
• Report and escalate requests to QA and Development teams to improve the overall quality of our products.
• Update customer-facing Knowledge Base articles for new feature releases and maintain internal support documentation to ensure rapid team onboarding.

Who you are:

• 2+ years of experience in Customer Support with a dedicated focus on Billing, Fintech or Subscription Management (SaaS, E-commerce, Mobile, or Gaming).
• Solid understanding of payment processing, recurring billing models and major payment providers.
• Hands-on experience processing refunds, cancellations, chargebacks, and managing pre-chargeback alert systems.
• English - at least strong Upper Intermediate.
• Advanced hands-on experience with ticketing and live chat platforms (Zendesk, Intercom, Freshdesk).

Would be a plus:

• Hands-on experience using Jira (or similar tools like ClickUp/Linear) to create detailed bug reports and track payment-related software issues.
• Experience collaborating directly with QA and Engineering teams.

We offer:

Remote-First culture: We provide a flexible working schedule and you can work anywhere in the world.

Health taking care program: We provide Health insurance, mental health support (psychologist compensation), sport compensation, and 20 paid sick days.

Personal Equipment Policy: We provide all necessary equipment for your work. For Ukrainian employees we also provide Ecoflow.

Vacation Policy: Each employee in our company has 20 paid vacation days and extra days on the occasion of special events.

Knowledge sharing: We are glad to share our knowledge and experience in our internal events.

English Lessons: We provide corporate English lessons to support your professional and personal growth.

Professional Development: Annual learning budget for courses, training, certifications, and conferences.

Public Holidays: You receive days off according to the official public holidays of your country of residence.

Coworking Compensation (Ukraine): We provide coworking space compensation for employees located in Ukraine.

Hiring process:

Recruitment Screen 👉 Final Interview 👉 Reference Check 👉 Job Offer