Python Tech Lead

Join our dynamic team at ajax as a Python Tech Lead where you will play a pivotal role in guiding our development efforts. We are looking for an enthusiastic leader who is passionate about technology and can inspire a team of developers to produce high-quality software solutions.Your responsibilities will include overseeing project development, mentoring team members, and ensuring that our coding standards and best practices are adhered to. You will also work closely with stakeholders to gather requirements and translate them into technical specifications.

Join us as a Senior Python Developer where you will play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and maintain high-quality applications. Your expertise in Python and deep understanding of software development principles will be essential in driving innovation within our projects.

Speechify’s mission is to make reading accessible for everyone. Over 50 million people use our text-to-speech technology to turn everything from PDFs to news articles into audio, helping them read faster and remember more. Our products span iOS, Android, Mac, Chrome Extension, and Web App. We’ve been recognized as Chrome Extension of the Year by Google and received a Design Award from Apple in 2025. Our fully distributed team of about 200 includes frontend and backend engineers, AI researchers, and veterans from companies like Amazon, Microsoft, and Google. We also work alongside alumni from Stanford and founders of startups such as Stripe and Vercel. Role overview Speechify’s Android app leads the Play Store in text-to-speech. We’re hiring a Tech Lead for Android Core Product to guide feature development and improve the app’s core experience. This role is ideal for someone who thinks strategically, enjoys quick-moving projects, and cares about delivering a polished user experience. What you will do Lead technical direction for Speechify’s Android app Drive new feature development and refine existing functionality Collaborate with a global team in a flat structure that values technical leadership and results Promote high standards for code quality, performance, and user experience What we look for Strong work ethic and a drive to achieve results Clear, effective communication skills Experience leading Android development projects Comfort working in a distributed, collaborative environment Competitive spirit and a focus on delivering for users Interview process The interview process includes several technical interviews, usually completed within one week. Location This role is based in Kyiv, Ukraine.

Ajax Systems is seeking a dynamic and proactive Global Administrative Technology Lead to enhance our infrastructure across existing and new locations. In this pivotal role, you will be responsible for optimizing administrative processes, ensuring seamless integration of technology solutions, and fostering collaboration among teams worldwide. Join us in our mission to deliver cutting-edge security systems and contribute to our rapid growth within the industry.

TENTENS Tech is a partner IT company of SKELAR — a Ukrainian venture builder focused on creating international tech businesses. We develop social discovery platforms that serve over 20 million users worldwide, leveraging deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech consists of over 250 talented individuals, each acting as a CEO in their role, significantly contributing to our collective goals. We operate with the 10/10ths philosophy, aiming for excellence and continuously pushing beyond just ‘good’ to achieve outstanding results. If this resonates with you and you're ready to accelerate with us, let’s connect!We are currently seeking an HR Lead to elevate our performance standards.Key Responsibilities:— Partner with business leaders to understand goals, context, constraints, and translate these into a people plan with measurable outcomes.— Drive organizational design and capacity planning: structure, roles, grading, headcount planning, and team changes that support strategy and speed.— Build talent retention and development strategies: succession planning, individual development plans, and career tracks.— Manage the performance cycle end-to-end in relevant business areas: setting objectives, evaluation, calibration, and development — with transparency and no surprises.— Monitor achievement of targeted HR metrics in business areas: regularly review key metrics, identify reasons for deviations, coordinate corrective actions with the business, and drive measurable results.What We Value:— Experience as an HRBP with business: ability to build relationships with stakeholders, formulate a people initiative plan, and deliver results.— Expertise in developing people management skills: goal setting, delegation, development, constructive feedback, etc.— A data-driven approach: making decisions and evaluating results based on metrics, experiments, and causal relationships.— Business orientation and focus on outcomes rather than processes.— Communication and influence: ability to negotiate, argue constructively, listen, and achieve win-win solutions.— High level of ownership: take responsibility, lead initiatives end-to-end, and do not wait for “technical tasks”.Nice-to-Have:— Experience in a Senior HRBP/HR Lead role managing a team (preferably 5+ individuals) and HR functions.What You Will Gain with Us:— Internal clubs for professional growth and networking, and opportunities for collaboration on exciting projects.

TENTENS Tech, a partner IT company of SKELAR, is at the forefront of building international tech businesses from Ukraine.We create innovative social discovery platforms that serve over 20 million users globally. Our impressive pace and scale are fueled by deep expertise in analytics, high-load systems, and performance marketing.Our team at TENTENS Tech consists of over 250 professionals, each acting as a CEO in their role and contributing to our collective success. We operate with a 10/10ths mentality: we keep our sights on our goals, ask the right questions along the way, and never settle for 'good enough' — we strive for excellence and beyond. If you resonate with this mindset and are ready to accelerate with us, we want to meet you!We are currently seeking a Backend Team Lead to help elevate our standards of excellence.

TENTENS Tech is a strategic partner of SKELAR, a Ukrainian venture builder dedicated to developing international tech businesses.We create social discovery platforms for over 20 million users globally. Our pace and scale are supported by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team consists of more than 250 professionals, each acting like a CEO in their role and contributing to our collective success. We operate with a 10/10ths mindset: aiming for excellence, asking the right questions along the way, and never settling for 'good enough'—we strive for maximum impact and beyond. If this resonates with you and you’re ready to accelerate with us—let’s connect!We are currently seeking a Backend Team Lead to help elevate our results.

Join TENTENS Tech, a dynamic partner of SKELAR, a Ukrainian venture builder focused on creating international tech businesses.We develop social discovery platforms for over 20 million users worldwide, driven by our deep expertise in analytics, high-load systems, and performance marketing.Our team of 250+ professionals operates like CEOs in their roles, influencing collective outcomes. We embody the 10/10ths approach: keeping our sights on targets, asking the right questions along the way, and never settling for 'good'—only striving for excellence and beyond. If this resonates with you and you're ready to accelerate with us, let's connect!We are currently seeking an SEO Lead to elevate our performance standards.Key challenges awaiting you in this role include:Managing projects related to real brand reputations with a direct impact on search engine results.Engaging with diverse formats and a wealth of practical cases for rapid professional growth.Operating in top markets, primarily the USA, within a highly competitive niche.Analyzing trends and competitors, integrating effective SEO practices into team workflows.Tracking, analyzing, and reporting on SEO effectiveness, providing insights for enhancing business metrics.Building a systematic SEO architecture with process automation considerations.Collaborating at the intersection of SEO, SERM, content, and link building.Your impact will include:Increasing organic traffic in top markets.Enhancing process efficiency through automation (API, n8n, Make, etc.).Developing the SEO roadmap and prioritizing tasks at the business level.Strategizing SERM initiatives and project scaling.What we value:3+ years of SEO experience with proven results in competitive niches in top markets.Experience with large websites (5-10k+ pages) or managing multiple projects simultaneously.Capability in building SEO strategies and managing substantial task volumes.Deep understanding of technical SEO implementation.

TENTENS Tech is looking for a Backend Team Lead to support its MarTech initiatives in Kyiv. This leadership position centers on guiding backend development and helping the team achieve higher performance. What you will do Lead and mentor backend engineers working on MarTech projects Guide technical decisions and support the team’s growth Promote high standards and help the team reach new levels of performance About TENTENS Tech TENTENS Tech partners with SKELAR, a Ukrainian venture builder focused on building international tech businesses. The company’s main products are social discovery platforms used by more than 20 million people worldwide. The team includes over 250 members who are encouraged to take ownership and show initiative. TENTENS Tech values focus, thoughtful questions, and a drive to exceed expectations. Ambition and a commitment to excellence are at the core of the company culture.

Speechify’s mission is to remove barriers to reading and learning. With a user base of over 50 million, Speechify converts documents, books, Google Docs, articles, and websites into audio, helping people read faster and understand more. Our products span iOS, Android, Mac, a web app, and a Chrome extension. Recent recognition includes Chrome Extension of the Year from Google and Apple’s App of the Day. About the Team Speechify’s nearly 200 team members work fully remotely around the world. The group includes frontend and backend engineers, AI research scientists, and professionals with experience at Amazon, Microsoft, Google, and graduates from universities such as Stanford. Role Overview This Tech Lead position focuses on Web Core Products and the Chrome Extension. The role suits someone who approaches product decisions strategically, enjoys shaping user experiences, and thrives in a setting where priorities shift and impact is visible. Technical leadership and hands-on delivery are both important here. What Matters Here Consistent delivery of high-quality technical solutions Clear, effective communication with teammates and stakeholders Strong work ethic and personal drive Ability to lead through technical expertise rather than hierarchy Interview Process The process includes several technical assessments. The aim is to complete all steps within one week. Location This role is based in Kyiv, Ukraine. The team operates remotely.

Hello, let’s get to know each other better. We are Quarks, a technological company that develops niche products in the areas of Social Discovery & Relationship Wellness. We focus on creating safe and effective solutions for dating and relationship development.Additionally, Quarks is:A team of over 250 QuarksRecognized as a top employer in 2024 by DOUAn eNPS score of 80.4%Having offices in Kyiv, with hubs in Lviv and WarsawOur flagship product, Kismia, is a dating application with over 80 million users across more than 20 locations worldwide. We are also engaged in developing services for marketing, analytics, and moderation.Currently, we are looking for a QA Engineer to join our Internal PaaS team, responsible for development, architecture, QA, DevOps, and other processes that form the technological foundation of our products.We are also open to hiring veterans—creating an environment where you can not just be part of the team, but also grow.Your future tasks:Testing the web application at various stages of the development life cycle (primarily front-end)Identifying, documenting, and tracking defects (bug tracking)Monitoring and supporting already implemented functionalitiesPreparing and updating test documentation (checklists, test cases)Participating in refinement, planning, and estimation processesCollaborating closely with a cross-functional team: developers, AQA, designers, analysts, and PMsWhat we value in this role:At least 1 year of experience in manual testing of web applicationsStrong knowledge of testing theory (types, levels, techniques, etc.)Understanding of the software development life cycle (SDLC)Practical skills in using DevToolsExperience with requirements and technical documentationFamiliarity with tools: Jira, Confluence, TMSBasic understanding of client-server architectureIt would be a plus:Experience in automated testing

TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder dedicated to creating international tech businesses.We specialize in developing social discovery platforms for over 20 million users globally. Our momentum and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Currently, our team at TENTENS Tech consists of more than 250 talented individuals, each operating as a CEO in their role and contributing to the collective success. We embrace a 10/10ths work style: focusing on our goals, asking the right questions along the way, and never settling for 'good'—always striving for excellence and beyond. If this resonates with you and you're ready to accelerate with us, let's connect!We are seeking a Senior/Lead Data Engineer to spearhead the development of a high-load Data Platform that processes over 2500 data streams and up to 9 PB of data monthly.In this role, you will be the technical driving force of the direction and will build a platform that provides teams with scalable, reliable, and user-friendly access to data.

Join us at Quarks Tech, a leading technology firm specializing in niche products within the realms of Social Discovery and Relationship Wellness. We are dedicated to developing secure and effective solutions for dating and relationship development, with over 80 million users across more than 20 locations worldwide.At Quarks, we pride ourselves on:250+ talented professionals on our teamRecognized as a top employer for 2024 by DOUAn impressive eNPS score of 80.4%Offices in Kyiv, and hubs in Lviv and WarsawWe are currently seeking a Senior Product Manager to join our Affemity Group. This team is dedicated to creating products and technologies that measurably enhance the quality of life for our users.We are also veteran-friendly, fostering an environment where team members can not only contribute but also grow professionally.Your Impact: You will build a robust B2C product focused on mental and relationship wellness, ensuring measurable benefits for users, high retention, and engagement rates, as well as a healthy unit economy.Expected Outcomes within 6-12 Months:A well-defined product model: metric system, dashboard, and regular decision rhythm established.A solid experimental system: continuous pipeline of tests, with measurable uplift from some.Positive trends in product experience quality, verified by metrics: reduced churn, increased ARPU.Delivery team operates in a systematic and predictable manner.Your Future Responsibilities:Define the North Star and key growth drivers (activation, engagement, retention, monetization), build a product KPI tree, and conduct weekly product reviews.Analyze, design, and implement retention loops, while optimizing paywall and pricing models with a focus on user value and transparency.Prioritize hypotheses and design experiments effectively.Design user flows, establish clear acceptance criteria and Definition of Done, and coordinate with engineers for delivery planning.Establish a continuous feedback loop with users to iterate on product enhancements.

Join SKELAR, a pioneering Ukrainian venture builder focused on creating international tech businesses. Together with our co-founders, we assemble talented teams to succeed in global markets.At SKELAR, we have multiple businesses operating in diverse niches — from EdTech to marketplaces. Our companies are featured among the top startups and product firms in Ukraine, consistently ranking high in the App Store and developing platforms that millions of people use. Our innovations have been covered by major media outlets such as TechCrunch and Wired.We take pride in our strong team of over 1000 professionals, each bringing exceptional expertise and ambitious goals. Our people are our most valuable asset, which is why we strive to build businesses with the best talents available.Every successful venture starts with a single line of code. Are you ready to write the next chapter with us?We are launching a new business.With over 1.8 billion people learning foreign languages, less than 10% can speak them fluently. We are developing an interactive communication environment — the AI Language Tutor — allowing users to speak and learn without the fear of judgment.Our goal is to create a product that learns alongside the user — gathering data to personalize the approach and motivate further learning. We believe in tailored learning experiences rather than one-size-fits-all solutions, leveraging algorithms to help users learn in their own ways and achieve effective results.This product is yet to be built. If you thrive on creating something from the ground up, let’s embark on this journey together!Being among the first five team members means you will play a crucial role in defining the direction of this business. We invite you to join us on this exciting adventure.You will lead the development of our key asset — the AI tutor mobile application. From inception to execution, you will lay the groundwork for the mobile architecture, write the initial lines of the MVP code, and establish release processes. Given that real-time voice interaction with AI is central to our product, your primary technical challenge will be to ensure a seamless, fast, and stable user experience.

TENTENS Tech is a partner IT company of SKELAR — a Ukrainian venture builder dedicated to constructing international tech businesses.We create social discovery platforms serving over 20 million users globally. Our momentum and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team comprises over 250 individuals, each acting as a CEO in their role, impacting collective outcomes. We operate in a 10/10ths style: staying focused on our goals, asking the right questions along the way, and never settling for 'good' — only maximum performance and a bit more. If you identify with this description and are ready to accelerate with us — let’s connect!We are currently seeking a Growth Operations Lead to elevate our performance standards together.Key responsibilities in this role include:Ownership of the Online Reputation Management business directionManagement of a team of 10+ top specialistsOperational excellence: building and optimizing processes in an operations-heavy environmentEstablishing a framework for hypothesis testing and scaling successful outcomesYour influence will extend to:Process architecture, functions, and organizational structureBusiness outcomes of the unitTarget metrics, planning, and decision-makingWhat we value:Experience in building processes and teams in an operations-heavy environmentExperience managing a business unitData-driven mindsetLeadership skills and people management: driving the team while formulating ambitious plans and providing space for them to choose their tools for executionPreferred qualifications:Experience in SERM/ORM/SEO domainsWhat you will gain with us:Access to internal clubs in professional domains: reputation, marketing, development, finance, recruitment...

Join United Tech as a Creative Marketing Team Lead, where you will spearhead our creative strategy for paid traffic performance. This is a unique opportunity to directly influence the success of high-growth products within a competitive landscape (US, UK, CA, AU markets), where every idea and decision counts. You will craft and implement innovative marketing strategies, oversee the entire production process from concept to final deliverables, and build a dynamic creative team from the ground up. Enjoy the autonomy to initiate bold projects, make independent decisions, and impact essential business outcomes in a fast-paced, bureaucracy-free environment.About Our Product: At United Tech, we are pioneers in the rapidly evolving social networking sector, revolutionizing online connections through a live-streaming platform that is growing at an annual rate of over 21%. We design products that integrate streaming, video content, interactivity, and community engagement, targeting a global audience. Our flagship offering is an international streaming platform devoid of advertisements, allowing users to connect in real-time via video chats and live broadcasts. Beyond this, we are developing additional innovative products within the niche, each catering to distinct mechanics, audiences, and monetization strategies. Our team is dedicated to tackling complex analytics, AI solutions, personalization, and the scaling of high-load systems. If you're passionate about shaping the future of social networking, we want you on our team!

Ajax Systems is a leading international technology company recognized as the largest manufacturer of security systems in Europe. Our innovative Ajax products are trusted by over 4.5 million users across more than 180 countries, featuring a portfolio of 280 devices designed for intrusion detection, video surveillance, fire safety, and automation.Join Our Automation Department, where we develop cutting-edge software and hardware solutions for testing each device during the manufacturing process. We design automated robotic lines for assembly and packaging, and we create software for device firmware and production management aimed at optimizing manufacturing time for sensors using Python 3 and Embedded C.Our Mission is to ensure the production of the highest quality devices in the shortest possible time. We develop proprietary software and hardware that are utilized at nearly every stage of production, from testing assembled boards and microcontroller firmware to verifying finished devices and packaging. Our primary challenge is achieving full automation of all production stages utilizing conveyors and robotics.Key Responsibilities:— Develop desktop applications (PC, single-board) to automate mass production processes, testing, and calibration of devices.— Integrate hardware with production software necessary for verifying/calibrating individual functions of security, video, and smart home devices.— Collaborate with CI/CD systems for automatic management of software versioning in production.— Create auxiliary programs, scripts, analysis algorithms, and APIs for interaction with databases, third-party software, and hardware from other teams.Required Skills and Qualifications:— Proficiency with PyQT/Pyside is essential.— Minimum of 2 years of commercial experience with Python 3.— Strong understanding of Multiprocessing, Threading, Sockets, and the Python Standard Libraries.— Knowledge of HTTP/TCP and OSI model.— Experience with Object-Oriented Programming (OOP).— Familiarity with embedded systems and automation technologies is a plus.

SKELAR is a Ukrainian venture builder dedicated to creating international tech companies following the principles of venture capital.We are seeking a dynamic and experienced Payments Lead to join one of our ventures, Howly.Howly is a multi-product company under SKELAR. We are committed to developing high-quality products that serve users in the global professional services market.Currently, Howly offers four products operating in international markets:A global legal solutions platform: Simplifying legal services to make them accessible and fast for everyone, digitalizing legal processes for easy support worldwide.Smart document automation: Eliminating routine tasks, our product significantly streamlines document management, allowing users to focus on more critical tasks.A career development platform: We help individuals grow by providing opportunities for career advancement, from resume assistance to career consulting, paving the way from potential to fulfilled ambitions.A marketplace for technical consultations: Connecting technical experts with those in need of their expertise quickly.We pride ourselves on delivering quality, accessible service to our clients 24/7. Our rapid growth, strong business logic, and commitment to building a workplace that is enjoyable today and desirable for the long term have allowed us to launch four products in Ukraine for international users over the past four years, growing our team to over 300 members.

SKELAR is a Ukrainian venture builder focused on creating international tech businesses. Alongside our co-founders, we assemble strong teams to conquer global markets.Currently, SKELAR has multiple ventures across various niches—from EdTech to marketplaces. These companies have made it to the TOP startup and product company rankings in Ukraine, secured top positions in the App Store, and developed platforms used by millions. Our businesses have been featured in renowned media outlets like TechCrunch and Wired.We take pride in our robust team of over 1,000 specialists, equipped with exceptional expertise and ambitious goals. Our people are our greatest asset, which is why we strive to build businesses with the best talents available.We are currently seeking an Analytics Team Lead for one of our portfolio companies.This team has successfully validated its business model, identified unit economics, achieved breakeven, and is actively scaling. Every new hire has the opportunity to become a leader in their field—success depends solely on your ambitions.Key Challenges:— Analytics Vision & Strategy: Develop a comprehensive analytics strategy that integrates marketing, product, and operations into a unified data ecosystem;— Team Management: Build and nurture a cross-functional team of analysts, providing mentorship and implementing high data standards;— Cross-functional Insights:Marketing: Evaluate media buying effectiveness (LTV/CAC, Attribution, Incrementality);Product: Analyze user behavior (Retention, A/B testing, conversion funnels);Operations: Optimize internal processes (payments, support, trust & safety);— Data Architecture: Collaborate with engineers to enhance the Data Warehouse and ensure data cleanliness and accessibility for all stakeholders;— Business Partnership: Direct collaboration with founders and C-level executives to forecast growth and validate business hypotheses.

Hello, let's get to know each other better. We are Quarks, a technology company dedicated to creating niche products in the realm of Social Discovery & Relationship Wellness. Our mission is to develop safe and effective solutions for dating and relationship development.Quarks stands out for:A talented team of over 250 membersVoted Top Employer of 2024 by DOUAn impressive eNPS score of 80.4%Offices in Kyiv, with hubs in Lviv and WarsawOur flagship product, Kismia, is a dating application boasting over 80 million users across more than 20 locations globally. Additionally, we are developing services for marketing, analytics, and moderation.We are currently seeking an Event Manager to join our Back Office team, which fosters a comfortable environment for our team members, promotes effective team collaboration, and enhances our internal culture.We also welcome veterans—we create conditions where you can not only be a part of our team but also grow.Your impact area: Strengthen our culture, brand, and team interaction through the organization of meaningful events that inspire and unite, opening new opportunities for individuals inside and outside the company.Your future tasks:Organizing internal events – team buildings, all-hands meetings, meetups, manager gatheringsPreparing and designing internal communication materials (event announcements, summaries, feedback forms) for our corporate Slack platformCollaborating with the Brand Design team on merchandise and printed materialsWhat we value in this role:Minimum of 1 year of experience in a similar roleExperience in organizing events for audiences of over 150 peopleFull-cycle experience in working with contractors: sourcing, communication, contract negotiation, and execution oversightProficient in planning and communication tools (Slack, Notion, Google Workspace)Strong organizational and communication skills, with the ability to engage various audience typesAbility to work in a fast-paced environment with tight deadlines while maintaining quality