Readdle

At Readdle, we built Spark to create the best email experience for professionals and their teams. In 2016 this intelligent email application became available across all Apple devices. After a crazy start on the iPhone and based on the customer’s positive feedback, we couldn't but launch it on Apple Watch, iPad and Mac. And Spark for Mac was crowned as "Best of 2016" by Apple!

Currently, our team is looking for a creative, experienced, high-skilled Product Engineer. 

What you'll do:

• Develop new features and improve old one
• Write Code. Including core product business logic, UI, and environmental tools (like scripts, editors, and parsers which are needed for efficient contribution to the product codebase)
• Write unit tests
• Write and update technical documentation
• Troubleshoot customer issues that customer support and QA teams did not manage to resolve
• Analyze requirements
• Define the solution specifics (by themself or in team format)
• Configure and maintain the workplace environment in a state ready to efficiently deliver expected results (IDE, CLI tools, profiles/certificates, cocoapods repositories, VPN)
• Validate the readiness of implemented solution for the QA stage (Self-checking of acceptance criteria and feature key scenarios)
• Share product ideas according to established processes

About you:

• Solid expertise in front-end technologies: React, RxJS, TypeScript
• Solid programming fundamentals, such as algorithms, design patterns
• Effective in both independent and team-based work settings
• Demonstrated ability to adhere to tight deadlines in a dynamic environment
• Proficient in Agile methodology
• Proficient with source control tools such as Git and GitHub
• Strong analytical and problem solving skills
• Experience in the complete product development lifecycle, from concept to deployment
• Ability to learn quickly and put into practice new development approaches

Would be a plus:

• Proficient in at least one of the following languages: Swift, Objective-C, Kotlin, Java, C/C++, C# 
• Experience with Angular
• Ready to quickly learn and write code in Swift in a cross-platform environment
• Understanding of CI/CD pipelines and tools (Azure, GitHub Actions or Jenkins)

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

As a Back-End Engineer, you will play a pivotal role in enhancing PDF Expert's web applications with innovative and challenging features. You will be responsible for designing and implementing AI-driven solutions, and ensuring our applications are user-friendly and high-performing. You will collaborate closely with QA, design, and other engineering teams to produce well-tested, production-ready code and participate in key architecture and infrastructure decisions.

What will you do:

• Implement new features and enhance existing ones for PDF Expert's web applications.
• Integrate AI-driven solutions to automate complex processes and enhance user experience.
• Write well-structured, maintainable, and production-ready code.
• Ensure the codebase is always in a buildable state and adheres to team coding standards.
• Analyze and improve the performance and usability of web applications.
• Participate in architecture and infrastructure decision-making processes.
• Communicate effectively with the product team about code quality, UX, development processes, implementation delays, and security vulnerabilities.
• Share insights and propose innovative solutions to improve the product and development practices.

About you:

• Expertise in Python 3.x and modern best practice
• Strong knowledge of async programming and concurrency
• Hands-on experience with profiling, debugging, and performance tuning
• Experience in load testing and system optimization
• Proficiency in SQLAlchemy, MySQL, and query performance optimization
• Understanding of Kubernetes concepts (Pods, Deployments, ConfigMaps, Secrets)
• Experience with Docker for containerization and orchestration

Would be a plus:

• Experience with AWS services like SQS, RDS (MySQL)
• Familiarity with LangChain or similar AI/LLM frameworks (e.g., LlamaIndex)
• Understanding of vector databases and retrieval mechanisms
• Experience integrating OpenAI APIs and LLM-based applications
• Knowledge of prompt engineering & retrieval-augmented generation (RAG)

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

As a Senior iOS Product Engineer, you'll play a key role in shaping the future of our product. Here's how you'll make a difference:

• Develop innovative features like an AI assistant and advanced search functionalities, transforming the email interaction experience for our users.
• Influence crucial changes in our iOS client's architecture. As we shift towards a more robust, SwiftUI-centric design, your insights will be essential in this transformation, providing improved flexibility and an enhanced iteration process. 
• While your primary platform would be iOS, there's room for expanding your impact. You'd leverage Swift for developing applications for Android and Windows platforms, demonstrating the versatility of Swift across various environments.
  
   

What you’ll do:

• Write efficient, maintainable, and clean code following best practices.
• Lead the enhancement of Spark's technical core, engaging crafting engines for upcoming features and ensuring our technologies remain advanced and responsive to changing needs.
• Manage the investigation and resolution initiatives for significant defects, issues, and incidents.
• Drive continuous improvement in our processes to optimize performance.
• Adapt swiftly to the latest features released by Apple and keep Spark innovative at the forefront of industry trends.
• Write tests to ensure you deliver high-quality code and a delightful user experience.
• Mentor, collaborate, and learn from team members.
  
   

About you:

• Proficiency in Swift and Objective-C
• Experience creating complex user interfaces with UIKit and/or SwiftUI
• Strong understanding of SOLID, OOP patterns, concurrency patterns
• Experienced in memory management and optimizations
• Ability to solve basic tooling issues (CocoaPods quirks, Xcode caches, git abnormal states)
• Basic understanding of how the C/Swift compiler builds flows (C headers, linking, search paths)
• Ability to function independently and in a team environment
• Strong analytical and problem-solving skills
• Experience working in an Agile/Scrum environment
  
   

Would be a plus:

• Interest in AI, experience creating AI agents
• Understanding of CI/CD pipelines and tools (Azure, GitHub Actions, or Jenkins)
• In-depth knowledge of databases (SQL, indexes)
  
   

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

The Spark email app stands as one of our flagship products, designed for various platforms. Our mission at Spark has always been to make you love your email experience - we started by making email smart, and improved team collaboration, and now we’ve tackled information overload to make email focused. Our core features are designed to heighten your focus and allow you to create customized workflows that suit your needs.

About the role:
As a Software Engineer (AI), you'll work at the intersection of AI, software engineering, and user experience, developing smart solutions that make email management effortless. From optimizing interactions with LLMs to writing high-performance code and solving complex technical challenges, you’ll play a key role in shaping the future of our product.

What you’ll do:

• Create AI agents to solve user problems.
• Enhance the quality of Spark's AI functionality.
• Stay updated with AI advancements and proactively test these technologies to enhance current features and evaluate their potential for addressing future challenges
• Conduct experiments and create prototypes for new AI features.
• Define metrics and measure the performance of AI functionality.
• Work closely with cross-functional teams to understand requirements and integrate AI solutions.

In addition to the AI-focused tasks mentioned above, you’ll also participate in activities typical of a product engineer:

• Write Code, including core product business logic, UI, and environmental tools (like scripts, editors, and parsers needed for efficient contribution to the product codebase).
• Uphold code quality by writing unit tests
• Write and update technical documentation
• Analyse requirements and define the solution specifics (by themself or in a team format)
• Configure and maintain the workplace environment in a state ready to efficiently deliver expected results (IDE, CLI tools, profiles/certificates, cocoa pods repositories, VPN)
• Validate the readiness of the implemented solution for the QA stage (Self-checking of acceptance criteria and feature key scenarios)
• Share product ideas according to established processes

About you:

• Experienced with Large Language Models (LLMs) and familiar with Retrieval-Augmented Generation (RAG) techniques, demonstrating a strong understanding of the latest natural language processing and generation advancements.
• Proficient in at least one of the following languages: Swift, Objective-C, Kotlin, C/C++.
• Ready to quickly learn and write code in Swift in a cross-platform environment.
• Familiar with design principles, interface guidelines, and development best practices on at least one platform: macOS, iOS, Android, or Windows.
• Effective in both independent and team-based work settings.
• Demonstrated ability to adhere to tight deadlines in a dynamic environment.
• Proficient in Agile methodology.
• Proficient with source control tools such as Git and GitHub.
• Advanced analytical and problem-solving skills.
• Strong understanding of SOLID principles, OOP, and concurrency patterns.
• Experience with memory management and optimisations.

Would be a plus:

• Experience in developing Electron applications using the TypeScript language and React framework.
• Experience with SwiftUI, UIKit, Core Animation, GCD, Swift Concurrency
• Understanding of CI/CD pipelines and tools (Azure, GitHub Actions or Jenkins)
• Databases (SQL, indexes)

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

Readdle’s Infrastructure team is looking for a skilled Full Stack Engineer to help build and maintain internal tools and services that support our products and engineering workflows. This role involves both backend and frontend development, with a focus on creating reliable, scalable solutions for internal teams.

What will you do:
- Developing Backend and Frontend functionality

- Writing unit and functional tests for new and existing code

- Writing documentation for new and existing parts of the projects

- Communicate with other team members to share knowledge

- Communicate with other teams and stakeholders on owned tasks (developers, designers, QA, support, marketing)

- Propose solutions for different problems

- Identify, localize, and fix issues or security problems

About you:

- Proficiency in Core Web Technologies (HTML, CSS, JavaScript)

- Proficiency in PHP, understanding differences between old and new versions

- Strong knowledge of Symfony framework with production experience

- REST API understanding with experience in API architecture

- Experience with task queues and background job processing

- Experience with back-end testing frameworks

- Understanding of microservices architecture, its principles, and challenges

- Experience with Docker and Docker Compose

- Understanding of logging, monitoring, and tracing tools

- Ability to analyze complex problems, identify root causes, and propose effective solutions

Would be a plus:

- Knowledge of Modern JavaScript Frameworks like React

- Experience with cloud platforms like AWS, Azure, or GCP

- Experience with container orchestration tools like Kubernetes

- Familiarity with tools like Terraform for provisioning and managing infrastructure

- Ability to mentor junior developers, provide technical guidance, and drive technical decisions within the team

- Good written and verbal communication skills

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

Currently, we are looking for a Social Media and Community Manager for Fluix, who will be responsible for establishing and maintaining the voice of the Fluix brand across social media platforms, building engagement and awareness, and positioning Fluix as a thought leader within the B2B tech space.

What will you do:

• Develop and manage Fluix’s presence on social media platforms, primarily LinkedIn and Instagram, creating and implementing content strategies and calendars.
• Create engaging content and visual assets in collaboration with the design team.
• Conduct competitor analysis to identify trends and best practices, and actively participate in relevant conversations to position Fluix as a thought leader.
• Develop paid sponsorship strategies and run social media experiments to optimize engagement.
• Track performance metrics, analyze data, and make necessary adjustments to content plans.
• Lead creative awareness campaigns (at least one per quarter) to enhance brand visibility.
• Explore Reddit to identify active communities, participate in discussions, and gather insights to inform content creation.
• Design and implement employee advocacy programs, creating resource libraries to support team engagement.
• Demonstrate awareness of the EU market, incorporating regional trends and audience preferences into social media strategies.
• Build relationships with influencers and thought leaders, collaborating on campaigns to amplify reach.
• Collaborate with marketing, product, and subject matter experts to align content with strategic goals.
• Embrace company values, foster positive teamwork, and proactively seek growth opportunities.

• Communicate clearly across teams, adapt to changes, and propose ideas to improve social presence and community engagement. 

   

About you:

• 3+ years of experience managing social media accounts for B2B product companies, with a portfolio of content across various formats.
• Strong writing skills with a clear, engaging, and adaptable style, tailored for diverse audiences.
• Hands-on experience with social media management tools (e.g., Hootsuite, Buffer) and basic performance reporting.
• Knowledge of paid sponsorship strategies to boost organic content.
• Experience managing LinkedIn pages and understanding best practices for business platforms.
• Ability to build and maintain relationships with influencers and thought leaders.
• Basic skills with design tools (Figma, Canva) and content management systems (Google Docs, Grammarly).
• A bachelor’s degree in Marketing, Communications, Journalism, or a related field is preferred.

• Fluent English. 

   

Would be a plus:

• Experience in SaaS, B2B tech, or automation industries.
• Certifications in social media marketing, content strategy, or digital advertising.
• Previous experience in community management or influencer collaboration.

• Familiarity with emerging platforms like Reddit and their community dynamics.

   

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.

As a Senior Data Scientist, you will play a pivotal role in enhancing PDF Expert’s data-driven capabilities by developing predictive models and actionable insights. You will be responsible for designing and implementing data science solutions that improve product performance, user engagement, and business outcomes. You will work closely with product, marketing, and engineering teams to translate complex data into strategic decisions and ensure seamless integration of data insights into the product.

What will you do:

• Transform large data sets, analyze trends, and generate actionable insights to optimize product strategies, user acquisition, and design improvements.
• Build, test, and deploy statistical and predictive models to support product and marketing initiatives, including churn prediction and customer segmentation.
• Set up intelligent alert systems and dashboards to monitor key metrics and detect anomalies, ensuring proactive issue resolution.
• Conduct in-depth analysis to understand customer behavior, segment users based on value and usage, and develop targeted strategies for retention and conversion.
• Develop and maintain regular reports and visual dashboards, clearly communicating data-driven insights to support strategic decision-making.
• Partner with product, marketing, and engineering teams to integrate data insights into product development, marketing campaigns, and performance optimization.
• Build forecasting models to predict growth, revenue impact, and product adoption, contributing to data-driven planning and strategy.

About you:

• At least 5 years of experience as a Data Scientist working with products.
• Proficiency in Python for data analysis, modeling, and automation.
• Strong understanding of statistical methods and their application in data interpretation and model building.
• Hands-on experience building and deploying machine learning models, including churn prediction, LTV estimation, and clustering.
• Skilled in developing and maintaining data pipelines and integrating machine learning models into production.
• Experience working with at least one BI tool, such as Power BI or Tableau, for data visualization and reporting.
• Familiarity with big data technologies like Google Big Query, Snowflake, or Amazon Redshift.
• A collaborative mindset, comfortable working with product, marketing, and engineering teams.
• Ability to independently manage tasks and initiatives, driving projects to completion.

Would be a plus:

• Familiarity with marketing analytics and the ability to analyze campaign performance and customer segmentation.
• Experience with Google BigQuery for data processing and analysis.
• Expertise in designing, conducting, and interpreting A/B tests to inform product decisions.

Readdle is looking for a Product Designer to shape the future of Documents — our flagship productivity app used by millions on iOS, MacOS, and Web. This role is focused on design excellence: crafting intuitive, high-quality interfaces that align with Apple’s HIG and deliver real product impact across platforms.

What will you do:

• Design and refine user experiences for a multi-platform product (iOS, Web, and more in the future).
• Present your work to the design team and cross-functional stakeholders.
• Collaborate closely with product managers, engineers, and other teams.
• Iterate based on user insights, analytics, and team feedback.
• Contribute to and evolve the design system.
• Own end-to-end flows – from wireframes to final UI.
• Solve complex UX problems with simple, elegant solutions.
• Participate in design critiques and continuously push for quality.
• Stay aligned with business and product goals while advocating for the user.

About you:

• Strong visual design skills.
• Passion for product design and user experience.
• High standards for organization in design work.
• Experience designing for iOS (other platforms will be a plus).
• Solid understanding of UI/UX fundamentals.
• Strong communication and collaboration skills.
• English B1+

Would be a plus:

• Understanding of product and business strategy.
• Basic knowledge of UX research methods.
• Experience designing for desktop or Android platforms.
• Experience with motion or interaction design.
• Awareness of accessibility best practices.
• Interest in AI or emerging technologies.

What you will get at Readdle:

• Customer-centric culture. We put our customers first. It means that every employee can benefit from interacting with our customers directly. It enables us to create and deliver the best solutions for millions of our users.
• Professional growth. We are professionals at everything we do. It means we own our decisions, our work, and our results. We provide quality feedback to others and welcome feedback as an opportunity to learn and improve.
• A team of amazing people. The greatest power we have is the team. It means we care about each other, ensure transparency, and invest in everyone's success.
• Impact on our products. We aim to create valuable products. It means that we improve ourselves constantly by overcoming constraints, simplifying our processes, and improving our capacity.
• Innovative culture. We try to be innovative and creative in everything we do. It means that we expect, appreciate and value new ideas.