Jobs at Djinni

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client delivers an autonomous workplace management platform that unifies digital employee experience and IT operations into a single, scalable solution. The platform combines real-time monitoring, automation, and proactive remediation to prevent issues before they impact productivity. It eliminates tool sprawl by consolidating multiple functions—such as endpoint telemetry, remote management, and performance analytics—into one powerful system. Deployed globally, it processes comprehensive device metrics (CPU, memory, disk, network, processes) at scale, handling high data throughput and complex multi-platform environments. The platform’s evolution involves modernizing legacy agents into a unified, cross-platform solution that can adapt to dynamic priorities and deliver reliable, secure operations.

About the Role:

We are seeking an experienced macOS Developer to own and enhance the core macOS agent within this autonomous management platform. In this senior role, you will join a domain-expert engineering team collaborating across multiple application and platform streams. You will drive the modernization of the agent into a single cross-platform solution, implement new data-collection and remote-management features, and troubleshoot production issues at scale. Your work will impact thousands of global users and shape the future architecture of a market-leading solution, offering significant autonomy, leadership, and the chance to solve challenging system-level problems.

Key Responsibilities:

• Develop and maintain the macOS agent using Swift and Objective-C.
• Implement new features for device telemetry, data collection, and remote management on macOS.
• Contribute to an agent modernization initiative to unify cross-platform functionality.
• Troubleshoot and resolve production incidents, ensuring agent stability and performance.
• Collaborate with product management, QA, and other development teams to define and deliver requirements.
• Optimize performance and memory usage through profiling and low-level debugging.
• Integrate and maintain daemons, launch agents, privileged helpers, and interprocess communication components.
• Participate in code reviews and maintain coding standards for system-level components.
• Stay current with Apple technologies, frameworks, and best practices for macOS development.

Required Competence and Skills:

• 5+ years of professional macOS application development experience.
• Expert-level proficiency in Swift and strong working knowledge of Objective-C.
• Deep understanding of Apple’s core frameworks and APIs, including Cocoa, Foundation, Networking, Concurrency, and Security.
• Extensive experience with macOS system programming (daemons, launch agents, privileged helpers, IPC).
• Proven track record of performance optimization, profiling, and low-level debugging on macOS.
• Familiarity with Xcode build systems and CI/CD pipeline configuration.
• Strong problem-solving skills, attention to detail, and ability to manage multiple priorities.
• Excellent communication and collaboration skills in a distributed, cross-functional team.

Nice to Have:

• Experience with .NET development and interoperability with native code.
• Familiarity with IT monitoring and management concepts.
• Knowledge of security best practices and secure coding techniques in macOS.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

Our Mission and Vision

At Solidgate, our mission is clear: to empower outstanding entrepreneurs to build exceptional internet companies. We exist to fuel the builders — the ones shaping the digital economy — with the financial infrastructure they deserve. To achieve that, we’re on a bold path: to become the #1 payments orchestration platform in the world.

We believe the future of payments is shaped by people who think big, take ownership, and bring curiosity and drive to everything they do. That’s exactly the kind of teammates we want on board.

Solidgate is part of Endeavor — a global community of the world’s most impactful entrepreneurs. We’re proud to be the first payment orchestrator from Europe to join — and to share our expertise within a network of outstanding global companies.

About the Team and Role

We’re looking for a Product Designer to join Solidgate and help us move from reactive design delivery to a proactive, product-driven design approach.

This role exists to remove design bottlenecks in day-to-day product and UI work, strengthen product thinking within design, and actively shape how our products evolve — not just how they look.

You’ll work closely with Product Teams to improve existing solutions, validate design decisions, and drive meaningful improvements to complex fintech products.
 

What you’ll own

• Generate and propose ideas to improve product usability and efficiency (e.g. reducing steps, simplifying flows)
• Validate product design decisions through research, testing, and stakeholder feedback
• Design and evolve internal admin panels across 4 products with complex, information-heavy interfaces
• Contribute to and maintain Solidgate’s internal design system
• Design and optimize high-impact user-facing components such as payment forms and payment links, where every interaction affects conversion
• Collaborate with engineers to ensure designs are feasible, clear, and well-implemented

You’re a great fit if you have

• 3+ years of experience as a UI/UX or Product Designer
• Strong product thinking: you focus on solving problems, not just delivering screens
• Experience designing complex interfaces, especially admin panels or internal tools
• Hands-on experience with hypothesis validation, prototyping, and user research
• Ability to independently identify problems and generate design tasks without waiting for detailed briefs
• Strong communication skills and the ability to clearly defend your design decisions with arguments
• Openness to feedback and readiness to admit when a hypothesis or solution doesn’t work

Nice to have

• Experience working in fintech or a B2B product company

Why Solidgate?

Creative ownership. You don’t just follow briefs — you pitch ideas, test angles, experiment with formats, and influence how Solidgate communicates with the market.

Speed first. Fast decisions, short feedback loops, and flexible processes let you move from idea to publish without bureaucracy.

Growth impact. Your content directly drives organic traffic, qualified leads, and long-term visibility across search, media, and expert platforms.

Content variety. From SEO articles and in-depth guides to PR pieces and external publications — you work across formats, not just one channel.

Fintech deep dive from experienced colleagues. You work closely with a senior writer deeply embedded in the product, gaining fast context, clear direction, and real product depth from day one.
 

💌 The Extras: 30+ days off, unlimited sick leave, free office meals, health coverage, and Apple gear to keep you productive. Courses, conferences, sports and wellness benefits — all designed for ideas, focus, and fun.

Tomorrow’s fintech needs your mindset. Come build it with us.

🫂 Know top talent? We’re always on the lookout. Recommend someone for our role, and if they get hired, there’s a bonus waiting for you — simple as that.

About the Role:

Limestone Digital is looking for a Senior Account Manager to own long-term relationships with international clients and drive account growth. You will act as a strategic partner for clients, understanding business goals, shaping delivery approaches together with delivery leads, and ensuring consistent value delivery. 

We need a leader who can take the wheel, build the strategy, and execute it autonomously. This role combines client consulting, commercial ownership, and delivery leadership, with a strong focus on trust-based, long-term partnerships.

What we are looking for:

• 7+ years of strong experience in account management, consulting, or client services leadership in digital/software services
• Background in both account management and project/delivery management
• Demonstrated ability to operate with high autonomy in a dynamic, unstructured environment, building processes from scratch
• Proven ability to manage complex client relationships and distributed delivery teams
• Demonstrated success in growing existing accounts (upsell/cross-sell, renewals)
• Strong commercial acumen: comfortable owning a margin and an account economics
• Mandatory experience running Quarterly Business Reviews and strategic planning sessions independently
• Ability to manage expectations, drive escalations when needed, and prevent overpromising
• Excellent negotiation, stakeholder management, and presentation skills
• Excellent spoken and written English (full professional proficiency)
• Experience working in international, multicultural environments
• Availability for business trips to Prague, approximately once every two months
   

Nice to have:

• Experience creating templates/playbooks for client engagement, escalation, and account growth
   

What you will do:

Client management & growth:

• Develop a deep understanding of each client’s business, priorities, budget cycles, and decision-making structure
• Build and maintain senior-level stakeholder relationships
• Maintain structured communication through regular calls, business reviews, and written follow-ups
• Independently design and run Quarterly Business Reviews and strategic sessions
• Identify and drive upsell/cross-sell opportunities within existing accounts by aligning our services with the client's long-term business roadmap
• Monitor satisfaction and gather both structured and informal feedback.
   

Delivery partnership:

• Maintain a clear, informed view of all active projects within your accounts
• Ensure transparent communication between clients and delivery teams
• Represent the client’s perspective internally and Limestone Digital’s perspective externally
• Identify risks early and coordinate resolutions with delivery leadership, Commercial & operational ownership
• Own account economics: revenue, margin, forecasting, invoicing, and payment collection (with Finance)
• Draft/review/manage client documentation: MSAs, SOWs, change requests, proposals
• Coordinate with client procurement teams on purchase orders and commercial processes
• Ensure contract-to-delivery clarity and operational professionalism across Engagements
   

About the project:

Limestone Digital is an outsourced software development company with headquarters in Prague, Czech Republic. We deliver and maintain desktop and web-based applications and systems for a wide variety of SMEs & startups across industries such as FinTech, Logistics, Healthcare, Insurance, Sports, and E-gaming. Limestone Digital is a team of extraordinary Developers, UI/UX Designers, QA Engineers, and Project Managers who help our clients by building and operating top-notch engineering solutions in our R&D facilities located in Eastern Europe. Our ideal candidate will act as the point of contact for clients, prospects, Business Unit Heads, and LD leadership. Account Manager will create business strategies, architect and oversee delivery approaches, build successful relationships, and drive business results.

Our Mission and Vision

At Solidgate, our mission is clear: to empower outstanding entrepreneurs to build exceptional internet companies. We exist to fuel the builders — the ones shaping the digital economy — with the financial infrastructure they deserve. To achieve that, we’re on a bold path: to become the #1 payments orchestration platform in the world.

We believe the future of payments is shaped by people who think big, take ownership, and bring curiosity and drive to everything they do. That’s exactly the kind of teammates we want on board.

Solidgate is part of Endeavor — a global community of the world’s most impactful entrepreneurs. We’re proud to be the first payment orchestrator from Europe to join — and to share our expertise within a network of outstanding global companies.

About the Team and Role

This Technical Account Manager role is about more than technical onboarding — it’s about helping merchants grow with Solidgate from the very first pre-sales call to scaling their payment flows. You’ll sit at the intersection of technology, product, and operations, owning the technical side of merchant integrations and shaping how businesses across the world work with payments.

What you’ll own

• End-to-end technical onboarding of new merchants, from first integration to go-live
• Ongoing technical support for existing merchants across their lifecycle with Solidgate
• Support for the L1 Support team on technical and integration-related topics
• Participation in pre-sales calls, helping explain integration options and technical capabilities
• Merchant system integration with Solidgate: hosted payment pages, payment forms, Apple Pay / Google Pay, routing logic, and data flows

• Guidance on optimal payment setups to help merchants scale efficiently and reliably

   

You’re a great fit if you have

• Background in technical support, technical account management, or a similar role
• Strong written and verbal communication skills — clear, structured, and merchant-focused
• English at Advanced level or higher
• Knowledge of Postman and basic SQL
• Ownership mindset: you care about results and long-term merchant success
• Ability to work independently, prioritize effectively, and stay focused on what matters
• Openness, empathy, and motivation to grow — both personally and with the product

Nice to have

• Hands-on experience running technical demos
• Familiarity with payment systems, APIs, or fintech products

Why Solidgate?

• High-impact role: You’re not inheriting a perfect system — you’re building one. Your work will define how we scale.
• Great product: We’ve built a fintech powerhouse that can be quickly scaled. Furthermore, Solidgate’s potential isn’t just an orchestration player — it’s the financial infrastructure for modern Internet businesses with a wide range of products and services, including subscriptions, chargeback management, indirect tax management, and more. And yes, we also hold our own financial licenses in our key regions of operations and have direct memberships with the Schemes.
• Massive growth opportunity: Solidgate is scaling rapidly — this role will be a career-defining move.
• You’ll work with top tech companies: Our clients are fast-growing SaaS, digital goods, and B2C businesses. You’ll be talking to decision-makers at some of the most successful internet companies in the world.
• A-player team: Work alongside top fintech professionals with a proven track record and results.

💌 The Extras: 30+ days off, unlimited sick leave, free office meals, health coverage, and Apple gear to keep you productive. Courses, conferences, sports and wellness benefits — all designed for ideas, focus, and fun.

Tomorrow’s fintech needs your mindset. Come build it with us.

Would you be open to leading the Platform & Cloud Security direction in a top-tier iGaming product? We’re looking for a DevSecOps Engineer to work on a high-load system. You’ll collaborate closely with the CTO, have full ownership of decisions, remote, and top-of-the-market terms.

Main Responsibilities

– Establish the DevSecOps function, defining best practices and security standards across the Platform Tribe

– Integrate security into CI/CD pipelines (SAST, DAST, dependency scanning, container scanning)

– Harden infrastructure and runtime environments (Linux, Docker, Kubernetes/EKS, RBAC)

– Design and enforce cloud security controls in AWS (IAM least-privilege, GuardDuty, Security Hub, encryption at rest/in transit)

– Define and maintain IaC security policies (Terraform/Terragrunt, drift detection, policy-as-code)

– Implement and manage secrets management solutions (Vault, AWS Secrets Manager)

– Build centralized security monitoring & alerting (Datadog, ELK, CloudWatch, SIEM/SOAR)

– Lead vulnerability management and threat modeling practices

– Automate workflows through scripting (Python, Bash)

– Partner with backend, infrastructure, and platform engineers to embed security in design & delivery

– Contribute to compliance readiness (ISO 27001, GDPR, PCI-DSS)

– Act as a security subject-matter expert, mentoring engineers and raising awareness

– Continuously evaluate and implement new security tools and approaches

Mandatory Requirements

– 5+ years in Security Engineering / DevSecOps roles , with proven success delivering secure infrastructure and applications

– Strong skills in Python and Bash for building and automating security workflows

– Cloud Security (AWS focus) — Deep knowledge of IAM least-privilege design, encryption at rest/in transit, GuardDuty, Security Hub, and best practices for securing multi-account environments

– Implementation of security controls in pipelines (SAST, DAST, dependency scanning, container image scanning, policy-as-code)

– Hardening of Linux systems, Docker, Kubernetes/EKS; strong experience with RBAC, PodSecurity/OPA/Gatekeeper/Kyverno policies

– Terraform/Terragrunt, including policy-as-code, drift detection, and compliance enforcement

– Expertise with HashiCorp Vault, AWS Secrets Manager, or equivalent

– Hands-on with centralized logging, SIEM/SOAR tools (Datadog Security, ELK, CloudWatch, etc.) and incident response workflows

– In-depth understanding of secure network design, segmentation, and monitoring

– Experience with tools enabling temporary, approval-based access (Teleport, AWS IAM Identity Center, Okta, etc.)

– Ability to design and enforce zero trust principles (continuous verification, microsegmentation, contextual access)

– Familiarity with SBOM generation (CycloneDX, Syft), artifact signing (Cosign, Sigstore), and applying SLSA/in-toto frameworks

– Understanding of ISO 27001, GDPR, PCI-DSS (iGaming relevance), plus experience automating compliance checks with IaC and policy engines

Nice to have

– Exposure to Kafka or ClickHouse in security-sensitive environments

– Familiarity with GitOps tooling (FluxCD/ArgoCD)

– Broader knowledge of SOC 2, HIPAA, or other regulatory frameworks

We offer

– Compensation at top industry standards + quarterly bonuses based on transparent evaluation

– Remote-first flexibility and adaptable working hours

– Unlimited paid vacation & sick leave

– Comprehensive medical insurance (for you and your partner)

– Financial support for major life events

– Professional growth budget for courses, training, and certifications

 Larch Networks - Specializes in electronics and software engineering, focusing on high-load
switching, communication platforms, Linux, and IoT devices. Established in 2009 with offices in Israel
and Kyiv.
https://larch-networks.com/
Key Responsibilities:

•  Develop software and hardware for network switches and embedded systems.
•  Involve in the development of software for routers.

Required Skills:

• Proficiency in C programming.
• Linux experience (Makefiles, Shell scripts).
• English upper-intermediate

Nice to Have:

• Knowledge of L2/L3 network protocols (e.g., ARP, STP, IGMP, VLAN).
• Experience with embedded programming (ARM/MIPS).

Why Us:

• High technical task level.
• Collaboration with global industry leaders.
• Work-life balance, flexible schedule, and remote work possibility.
• Competitive salary, medical insurance, paid vacation.
• Compensation package.

Selection Process:
Completion of a short test assignment.
Technical and final interview.
Work Location: remote.



 

Larch Networks has been a leader in network solutions since 2009, with offices in Israel and Kyiv. We specialize in both software and hardware for network equipment, providing advanced, secure, and reliable network products for our customers. Our team of engineers is renowned for its expertise in designing and integrating high-load switching and communication platforms, thin clients, Linux, and embedded devices for IoT, enterprise, telecom, and industrial applications. We are committed to delivering innovative and cost-effective solutions.

What you will doActive candidate sourcing

• Daily sourcing on LinkedIn (main tool)
• Using Boolean search, X-ray, filters, and other sourcing techniques
• Searching for specialists in the following areas:
  • Embedded / C
  • QA Automation
  • Other technical roles within the company

Initial communication

• Writing cold outreach messages on LinkedIn
• Managing communication until handing the candidate over to a recruiter
• Building candidate interest in company vacancies
• Tracking feedback and statuses

Building a candidate database

• Maintaining and updating the database in PeopleForce
• Creating a “warm” candidate pool
• Supporting long-term relationships with candidates

Recruitment support

• Passing relevant candidates to the recruiter
• Creating shortlists
• Participating in improving job descriptions and outreach messages
• Collecting analytics (responses, conversion rates)

What matters to usRequired:

• Completed IT recruiting or sourcing courses
• Knowledge of Boolean search
• Basic understanding of IT roles and terminology
• Confident LinkedIn usage
• Strong written communication skills
• High attention to detail and responsibility
• Readiness for consistent daily sourcing work

Nice to have:

• 3+ months of sourcing experience
• English level B1
• Desire to grow into an IT Recruiter role

Conditions

Format: full-time. The role is fully remote, but you need to be located in Kyiv since occasional office visits might be necessary.

Growth opportunities

• Transition to IT Recruiter position
• Ownership of personal vacancies
• Income growth through the bonus system

💡 In our team, you will:

• Grow your skills alongside experienced professionals;
• Get access to expertise in e-commerce, performance marketing, and sales;
• See a direct impact of your work on clients’ business results;
• Work in an environment of openness, fast decision-making, and flexibility;
• Build a scalable sales system: processes, metrics, team, and motivation.

✨ What We Offer

🏡 Remote, flexible format — Full/Part-time 

🏝 Paid vacation and sick leave.

📚 Learning and development — mentorship, working with experts, participation in systematic funnel improvements.

🌍 International projects — brands from the US, EU, and Asia.

🎯 Requirements

• 3+ years of experience in B2B sales and managing a sales team (lead generation + closers).
• Experience in digital / marketing / e-commerce agencies or related e-commerce services is a strong plus.
• Solid understanding of ICP, funnels, segmentation, messaging, and offers.
• Experience working with CRM systems (pipeline, tasks, follow-ups management).
• Experience working as an SDR / lead generation specialist or closer is a plus.
• Experience building or contributing to KPI and motivation systems for a sales team is a plus.
• Analytical mindset and ability to improve processes, not just “sell more.”
• English — Upper-Intermediate+ (client communication, participation in calls).
• Strong structure, independence, responsibility, and ability to maintain team rhythm.

🧩 Responsibilities

1. Lead Generation

• Oversee the work of 2 lead generation specialists (LinkedIn, email, Upwork, other channels).
• Optimize ICP, filters, and channel-based segmentation.
• Improve scripts, sequences, and lead quality.
• Monitor conversions: contact → reply → scheduled call → completed call.
• Ensure proper lead attribution in CRM so the source of each lead is visible and channel performance can be measured.

2. Working with the Closer

• Track conversions: call → audit → offer → close.
• Review call recordings, provide feedback and coaching.
• Participate in complex/key sales calls as an expert when needed.
• Help structure offers for A+/enterprise clients.
• Analyze and systematize reasons for lost deals.

3. Marketing & Content Direction

• Develop a content strategy for LinkedIn (founder + company).
• Coordinate cases, videos, and results produced by the team to ensure they enter the sales funnel.
• Strengthen the founder’s personal brand (in collaboration with marketing/content).

• Partner channels: communities, influencers, referral partnerships:

  • Maintain a partner database;
  • Plan regular touchpoints (calls, updates, joint activities).

   

4. Analytics & Monthly Improvements

• Analyze key metrics:
  • Number of leads by channel;
  • Replies, scheduled and completed calls;
  • Audits, conversion to contract;
  • CAC, deal length, ROI;
  • A/B/C client distribution.
• Run monthly improvement cycles: messaging, offers, value proposition, segments, follow-ups.
• Create and update templates: emails, scripts, proposals, presentations.

• Prepare weekly and monthly reports for the founder:

  • Plan vs actual;
  • Key insights;
  • What was improved and what will be changed next.

   

5. Team Management & Sales Rhythm

• Daily / weekly team coordination: short meetings for focus and prioritization.
• Weekly 1:1s with lead gen specialists and the closer: CRM review, pipeline, tasks, follow-ups, growth areas.
• Weekly group calibration sessions:
  • Joint review of call recordings;
  • Case analysis;
  • Best practices sharing.
• Monthly training sessions: topic of the month (qualification, presentations, objection handling, long sales cycles, etc.).
• Performance reviews: workload, results, growth areas, individual development plans.
• Update scripts, guidelines, and materials based on data analysis.

6. CRM, Processes & KPIs

• Ownership of CRM data quality:

  • Every lead has a next step;
  • No “dead” leads without tasks;
  • Full pipeline transparency at every stage.

   

• Documenting and maintaining the sales process:

  • Pipeline stages;
  • Actions at each stage;
  • Follow-up regulations.

   

• Participation in building and regularly reviewing KPIs and motivation systems:

  • Quarterly adjustments of plans and targets;
  • Balance between challenge and realism;
  • Linking bonuses to results and quality of pipeline management.

   

7. Hiring & Scaling

• Participation in hiring new SDRs / lead gen specialists / closers:
  • Defining candidate profiles;
  • Participation in final interviews;
  • Assessing hard and soft skills.
• Onboarding new sales team members: processes, materials, first goals.

📨 Want to join AMS Pilot?

Send us your resume.

Senior C++ (Linux) Developer

Ukraine, remote

What you will do:

· Leading a module/subject

· Giving a hand with emergencies in other modules (i.e. you will be familiar with the entire system)

· Going full cycle, from spec through design and coding to unit tests

What you will need:

· -5-6 years+ of development experience, mainly C/C++

· Extensive Knowledge in Linux environment.

· Strong Multi threading background

· Intermediate English+

· Experience with large-scale systems (not small applications)

Advantage:

· Experienced in High performance or High load software systems, code optimization and latency measurement.  

· Experience in the financial industry and algorithms

· Exposure to a wide range of systems, software and libraries.

· Scripting experience (Bash, Python)

We are looking for a skilled Manual QA Engineer to ensure high product quality through thorough manual testing and close collaboration with cross-functional teams. You will work closely with developers, DevOps, and product teams to identify issues, improve test coverage, optimize QA processes, and support stable releases. Our product is a mobile application in the EV (electric vehicles & charging infrastructure) domain, so your work will directly contribute to an innovative and rapidly growing field.

Requirement skills:
— 2+ years experience as a QA Engineer;
— Experience with native mobile application testing (iOS / Android);
— Strong knowledge of software QA methodologies and processes;
— Experience in creating and maintenance of test documentation;
— Experience using Xcode, Android Studio;
— Understanding of client-server architecture;
— Experience of work with REST-based applications;
— Good understanding of UX/UI principles and guidelines(Google and Apple);
— Experience with CI systems like (Jenkins, etc).
— Strong attention to detail and commitment to quality.
— Excellent problem-solving and analytical skills.

Desirable skills:
— Experience working in an Agile/Scrum development process;
— Experience with Crashlytics, Kibana or similar services;
— Experience with Git (branching, merging, and version control best practices.

Responsibilities:
— Review requirements, specifications and technical design documents to provide timely and meaningful feedback;
— Create detailed, comprehensive and well-structured test cases;
— Create, execute and maintain manual test cases;
— Initiate and execute tests without having a detailed test case;
— Identify, record, document thoroughly and track bugs;
— Perform thorough regression testing when bugs are resolved;
— Actively participate in improving QA processes, procedures, and implementing best practicies.

What We Offer:
• An opportunity to influence the quality of an innovative product and processes within the company.
• A friendly team of professionals who value growth and collaboration.
• Competitive salary.
• Flexible work schedule with remote options.
• Opportunities for learning, growth, and professional development.

About GO TO-U:
We work hard and party hard, making this World a better place!

GO TO-U is set to revolutionize the EV charging experience! We are the experts in EV charging infrastructure development, providing consultancy for cities and large corporations since 2014. We have worked globally since 2017 to bring the best EV charging experience. Now, we give information on more than 1 ,000,000 charging stations worldwide! In 2020, GO TO-U became a Techstars family member. Before that, GO TO-U benefited from the IMPACT Accelerator program, EU HORIZON2020 funds. ABB’s E-mobility division strengthened global leadership with GO TO-U investment in 2021.
In 2026, GO TO-U is in 67 countries and has more than 500,000 users of the app.

Location: Warsaw 

Tinder is the world’s leading dating application that redefined how people meet online. Built on a simple yet powerful “swipe” mechanic, it empowers users to discover potential matches nearby and start meaningful conversations instantly. By blending geolocation, intuitive design, and personalization through smart algorithms, Tinder revolutionized modern dating by making introductions faster, more casual, and accessible to millions globally.
 

The platform isn’t just about dating—it’s about sparking connections. From friendships and networking to relationships, Tinder has created a cultural shift in how people approach meeting new individuals, making it one of the most recognizable consumer apps worldwide.

Responsibilities:

• Own end-to-end QA within a sprint: create test strategies/plans, define scope & priority, estimate effort, track progress, unblock issues, and ensure on-time, high-quality releases.
• Plan and execute test cycles across feature, integration, regression, and release certification (TestFlight/Internal App Sharing/production).
• Author clear, reproducible defects with videos, logs, and device metadata; drive root cause and follow-through to resolution.
• Partner with developers & PMs to clarify requirements/acceptance criteria, risks, and success metrics.
• Network-aware testing (airplane mode, 2G/3G throttling, packet loss) using proxies and emulator/simulator tools.
• API validation for mobile backends (manual REST verification, contracts, edge cases).
• Data/analytics validation (events, funnels, attribution) against tracking specs.
• Release readiness: build verification, smoke suites, sanity checks; participate in bug triage, go/no-go, and post-mortems.
• Automation-aware: convert high-priority manual scenarios into actionable automation tickets; collaborate with SDETs on monthly audits and coverage plans.
• Lead release-team testathons for major feature launches: plan charters, coordinate cross-functional participants, track findings, and publish results.
• Work closely with the automation team on weekly release regression cycles: align scope, review flaky tests, and prioritize automation candidates from recent escapes.
• Hands-on memory profiling using Xcode Instruments and Android Studio Profiler; detect leaks/retention, analyze heap/allocations, and file actionable performance bugs with traces.
• Be metrics-oriented and deliver weekly Quality Release Reports to the Release Manager (coverage & pass rate, defect density/age/SLA, crash-free users, ANR rate, cold-start time, flakiness, known risks).

Must-Have Qualifications:
 

• 2+ years of hands-on QA for iOS and Android consumer apps (feature, integration, regression, release testing).
• Strong understanding of SDLC and mobile release trains (feature flags, build types, staged rollouts, crash & analytics tooling).
• Clear, proactive communication—align with developers and product on requirements, test plans, and test strategies without supervision.
• Proven end-to-end ownership of sprint QA (scope/priorities, daily progress, blockers, timely sign-off).
• Testing on real devices and emulators/simulators; coverage across OS versions, screen sizes, locales, accessibility setups.
• Tooling: Xcode (logs, profiling), Android Studio/ADB, Charles Proxy or Fiddler, Jira, Qase | AI-powered Test Management Software for Quality Assurance .
• Manual REST API testing (Postman/Insomnia) and solid grasp of client–server interactions (headers, auth, caching).
• Excellent written/spoken English, crisp test docs and defect reports.
   

Nice-to-Have:
 

• Accessibility testing to WCAG 2.1 AA (VoiceOver/TalkBack, color/contrast, semantics).
• Experience with IAP/subscriptions, push notifications, deep links, geo features.
• Familiarity with crash/analytics stacks (Firebase, Datadog, Amplitude, Mixpanel, Sentry, Crashlytics).
• Exposure to mobile automation (XCUITest/Espresso/Maestro) and creating high-value automation backlog.
• Client-side performance profiling (startup time, memory, jank) and battery/network sensitivity checks.

We are building a virtual office platform and are looking for a skilled 3D Artist / Character Artist to create custom isometric avatar sprite sheets for a themed event.

The theme is a Madagascar expedition, and we need two stylized avatars: one male and one female expeditionist in safari outfits.

🧭 Project Scope

• Create 2 unique isometric characters (male & female)
• Style: Stylized, clean, readable in isometric view
• Theme: Safari / expedition (Madagascar-inspired)
• Focus on strong silhouettes and personality

🎬 Deliverables

For each character:

• Sprite sheet PNG (3200 × 2600 px)
• 8-direction walk cycle animations
• Idle poses
• Small profile thumbnail/avatar

All animations must be smooth, loopable, and consistent across directions

🛠 Responsibilities

• Model and texture stylized 3D characters
• Animate walk cycles for 8 directions
• Render/export clean isometric sprite sheets
• Ensure consistency between male and female characters
• Follow the provided technical specification

✅ Requirements

• Strong experience in character creation and animation
• Proven work with sprite sheets or isometric assets
• Ability to create clean, readable animations
• Understanding of isometric perspective and constraints
• Attention to detail and consistency

⭐ Nice to Have

• Experience with game-ready character pipelines
• Experience creating assets for virtual platforms or games
• Familiarity with batch rendering workflows (Blender or similar)

We are looking for an ambitious and proactive person who wants to grow in partnerships and business operations.

This role involves close collaboration with the partnerships team and active participation in building and scaling the company’s partnership ecosystem.

No prior experience is required — we are open to candidates at the beginning of their career.
 

Requirements

• Ambitious and proactive mindset with interest in partnerships / business operations
• English: Upper-Intermediate (B2) or higher (for communication with international partners)
• Strong organizational skills and attention to detail
• Good communication skills and ability to work with stakeholders
• Ability to handle multiple tasks and prioritize effectively

• Experience with Google Sheets / Excel (filters, basic formulas, data structuring)

   

Responsibilities
Partnership Operations

• Maintain and update the partner database
• Track negotiation and integration statuses
• Manage and support the partnerships pipeline
• Research and collect contacts of potential partners
• Conduct partner research based on business needs
• Assist with drafting partner outreach and initial communication

Communication & Coordination

• Schedule meetings and intro calls with partners
• Coordinate contract signing processes
• Follow up after meetings and calls
• Track deadlines and open tasks
• Prepare meeting notes and summaries

Research & Market Analysis

• Identify new potential partners
• Analyze the market and partnership landscape
• Research competitors and their partnerships
• Prepare short research summaries

Documentation & Administration

• Prepare draft partnership agreements
• Track document signing status
• Maintain contracts and partner documentation
• Support document flow within the partnership team

Administrative Support

• Assist with calendar management and meeting organization
• Prepare briefings before partner meetings
• Coordinate business trips and conference participation
• Help prepare presentations and partner materials

We offer

• Opportunity to grow into a Partnership Manager role
• Work in a team building partnerships from scratch
• Dynamic environment with real impact on business processes
• 25 days of paid vacation + public holidays
• English lessons compensation
• Medical compensation
• Professional development budget
• Company-provided equipment
• Cozy office and free snacks
• Team building and social events

About Us

We are a newly funded MilTech startup building an on-premises platform for automated annotation of petabytes of UAV video and training computer vision models for autonomous flight. We have a strategic partnership with the largest Ukrainian UAV manufacturer and access to what is the largest privately owned UAV video dataset in the world. We are at the very beginning — the technical plan exists, the funding is secured, the data is real — and now we need the right people to turn it into reality.

The Role

We are looking for a Data Annotator / CVAT Specialist to join the founding team. You will be the person who turns raw UAV video into the high-quality labeled datasets that our ML models are trained on. This is not bulk labeling work — you will help define annotation standards, manage the CVAT platform, build quality control workflows, and directly shape the data that drives our autonomous flight models.

You will work closely with the ML engineering team to establish the annotation pipeline from scratch: from ontology design and labeling policy through annotation execution, quality assurance, and feedback loops that continuously improve both label quality and annotation speed.

What You Will Own

CVAT Administration & Workflow
- Set up projects, tasks, and jobs; manage annotation workflows and task routing
- Configure AI-assisted annotation: integrate pre-trained models for auto-labeling and tracking
- Manage user roles, permissions, and review pipelines within CVAT
- Handle data import/export across formats (COCO, YOLO, MOT, CVAT XML)

Annotation Execution
- Annotate UAV video clips using bounding boxes, multi-object tracking (Track Mode with keyframes and interpolation), and classification labels
- Handle complex scenarios: occluded objects, crowded scenes, night/low-visibility footage, fast-moving targets
- Achieve and maintain high throughput without sacrificing label quality

Ontology & Labeling Policy
- Collaborate with the ML team to define and refine the annotation ontology (class definitions, examples, edge cases)
- Document labeling rules: occlusion/truncation handling, minimum box sizes, track start/end criteria, disappearance rules
- Maintain and update annotation guidelines as new classes or scenarios emerge

Quality Control
- Execute the QC pipeline: gold set calibration, double-labeling for inter-annotator agreement, review workflows
- Run automated validation checks: geometry (out-of-frame, zero-area, broken aspect ratios), temporal continuity (teleporting boxes, scale jumps, broken tracks)
- Track quality metrics: agreement scores (IoU + class match), rework rates, model-vs-human correction rates
- Identify systematic errors and feed them back into guideline updates and annotator calibration

Scaling & Active Learning Support
- Process pre-labeled data from ML models: review, correct, and approve auto-annotations based on confidence routing (high/mid/low)
- Prioritize annotation effort on hard cases (low confidence, rare classes, difficult conditions)
- Provide structured feedback to the ML team on where pre-labels consistently fail, driving retraining priorities

What We Are Looking For

Must Have
- 2+ years of hands-on experience in data annotation for computer vision (object detection, tracking, or segmentation)
- Strong proficiency with CVAT — project setup, Track Mode, interpolation, AI-assisted annotation, import/export
- Experience annotating video data (not just static images) — understanding of temporal consistency and tracking
- Familiarity with annotation formats: COCO, YOLO, MOT, Pascal VOC
- Attention to detail and ability to maintain high label quality at volume
- Experience with quality control processes: review workflows, inter-annotator agreement, gold sets
- Comfortable working in Linux environments and with self-hosted tools

Strong Plus
- Experience administering a self-hosted CVAT deployment (Docker-based setup, Nuclio for serverless auto-annotation)
- UAV / drone / aerial imagery annotation experience
- Familiarity with other annotation tools (Label Studio, Supervisely, V7, Roboflow)
- Understanding of ML model evaluation metrics (mAP, IoU, precision/recall) and how annotation quality affects them
- Experience with active learning or pre-annotation workflows
- Basic Python scripting (format conversion, data validation, automation)
- MilTech or defense-related annotation work

What We Offer

- Join an early-stage team where your work directly determines the quality of the data behind our ML models
- Define annotation standards and QC processes from scratch — not just follow someone else's guidelines
- The largest privately owned UAV video dataset in the world — petabyte-scale, impossible to replicate
- Work closely with ML engineers and see how your annotations translate into model performance
- Opportunity to grow into annotation team lead as the team scales
- Open-source-first approach with no vendor lock-in
- Competitive salary
 

• Project Description:

  One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
  Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
  Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
  Work supposes close cooperation with Customer team located in Houston and following Agile principles.
  Our team is senior, supportive and friendly.
   

• Responsibilities:

  • Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
  solutions.
  • Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
  fault, velocity model, etc.)
  • Present architectural designs and technical proposals to the architecture review board.
  • Ability to break down development tasks and lay out clear implementation roadmaps.
  • Implement and optimize computation algorithms
  • Design and develop both thin and thick client applications that interact with cloud-based microservices.
  • Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
  • Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
  • Mentor junior developers and actively contribute to architectural and implementation decisions.
  • Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
  • Stay current with emerging technologies and trends in geophysical computing and software development.
   

• Mandatory Skills Description:

  6+ years of hands-on Java development experience
  Strong Java Core knowledge
  Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
  Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
  Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
  Solid knowledge of design patterns and software architecture principles
  Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
  Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
  Stable career trajectory, no fragmented job history with short tenures