Software Engineer

• Own and improve our Lightning Network and Bitcoin payment infrastructure, from everyday upgrades and fixes to larger improvements across the stack
• Work hands-on with Lightning implementations (LND, CLN, or similar), payment channels, and liquidity management
• Analyze how our Lightning payments flow, including forensic work after incidents, and build monitoring and policies on top
• Strengthen the security of our crypto systems: key management, HSMs, and how we safeguard funds
• Help us get crypto transaction accounting right, working with the finance team so our books reflect how Bitcoin actually moves
• Evaluate and integrate new Bitcoin and Lightning tech as the space evolves
• Get new payment protocols into production, from payjoin to nostr-based flows
• Build the Lightning side of our agentic commerce work
• Ship with product and design, and contribute to our internal libraries and open-source tooling

Lightning Developer

Backend Engineer

• Design and architect database systems optimized for Chess.com's specific workloads including real-time gaming, puzzle systems, and social graph traversal
• Build internal tooling and automation to improve database deployment, migration, and operational efficiency, simplifying work streams for the broader engineering organization
• Develop data pipelines and ETL processes for analytics, machine learning features, and cross-system data synchronization
• Engineer multi-regional database architectures capable of handling massive volumes of chess games, user data, and social network interactions with minimal latency
• Solve complex data modeling challenges including chess game storage optimization, puzzle attempt tracking, and large-scale social graph representation
• Drive database platform evolution evaluating and implementing new technologies, storage engines, and architectural patterns with a bias toward continuous improvement
• Build observability and performance tooling providing deep visibility into database behavior, query patterns, and capacity trends
• Collaborate with product engineering teams to design optimal schemas, access patterns, and data layer integrations, ensuring the right people have the information they need
• Implement infrastructure-as-code practices for database provisioning, configuration, and lifecycle management with high first-time-right quality
• Participate in on-call rotation to ensure 24/7 database availability and contribute to incident post-mortems.

Database Engineer

• Create and maintain workflows with teams to provide visibility and ensure workload balance for consistent visual designs.
• Develop and oversee testing schedules in a client-server environment, addressing all browsers and devices to ensure various devices display the desired content.
• Produce quality code, raising the bar for the whole team on quality and speed.
• Recommend system solutions by comparing the advantages and disadvantages.
• Write code and tests, build prototypes, solve issues, profile, and analyze bottlenecks.
• Manage and optimize scalable distributed systems on the cloud.
• Manage and optimize scalable database systems on the cloud.
• Optimization of web applications for performance and scalability.
• Develop automated tests to ensure business needs are met and allow for regression testing.
• Build a roadmap - identify goals and themes for development and solve the most important challenges to legitimize the product concept.
• Collect feedback to continue expansion and enhancements, keep growing the product roadmap, and set new strategic goals for the product.
• Assess competitor products and identify the key requirements for product or upgrades.
• Suggest changes to current product lines to improve business processes.

Back End Developer

Full-stack Engineer

• You will work on the core DEX and help shape its execution, performance and trading experience.
• Thinks like a product builder
• Takes ownership from problem to product
• Makes sound decisions with incomplete information
• Enjoys working in an early, ambitious team
• If you have built trading products and want to help create a faster, fairer DEX, apply!

Product Engineer – Founding

• Lead the people, architecture, and delivery behind OrderYOYO's payments platform — enabling KYC onboarding, deductions, settlement/payout timing, dispute flows, and merchant invoicing — while growing a high-performing engineering team and raising the bar on reliability, security, and engineering quality in one of our most business-critical domains.
• Lead, mentor, and grow a team of payments engineers — providing hands-on technical guidance, regular feedback, and clear paths for career development.
• Own hiring and team-building for the payments engineering function, partnering with recruiting to define role profiles, run interviews, and bring in strong talent.
• Build a team culture where payments knowledge is documented and shared, not tribal — through design reviews, standards, and mentoring.
• Represent the payments engineering team in leadership and cross-functional conversations, translating business needs into technical strategy and team priorities.
• Set the technical direction and long-term architecture strategy for payment-domain services, including gateway integrations, payment intent/authorisation/capture/refund flows, payout orchestration, and reconciliation.
• Raise engineering quality in a high-change domain: automated testing, safe rollouts/canaries, observability, and incident-response improvements, with accountability for outcomes across the team.

Lead Software Engineer – Payments

Frontend Engineer

• Produce high-quality software while working in front-end development
• Architect and build complex, scalable front-end applications
• Collaborate with other developers and contribute to the team’s goals
• Mentor other developers and lead technical initiatives

Senior Angular Developer

• Create high-quality technical documentation and structured examples based on real-world frontend engineering scenarios.
• Apply your frontend engineering expertise to evaluate UI implementations, styling decisions, and best practices.
• Interpret component style guides and screenshots to produce accurate technical outputs and documentation.
• Implement pixel-perfect, responsive web components using modern technologies such as Typescript and CSS3.
• Ensure all UI elements adhere to established design systems and accessibility standards.
• Collaborate asynchronously through clear documentation and constructive feedback within a remote-first environment.
• Proactively identify, communicate, and resolve inconsistencies or ambiguities in design specifications.
• Optimize UI performance across devices, focusing on fast load times and smooth interactions.
• Contribute domain-specific expertise to guide the training and development of advanced AI models.

Frontend Software Engineer – Web Developer

• Collaborate with cross-functional teams to define, design, and ship new features
• Develop and execute unit tests to ensure its robustness, including edge cases, usability, and general reliability
• Interface directly with end-users and developers building on Trust Wallet, providing support and collecting feedback to inform product direction

Senior iOS Engineer

• The purpose of this role is to design and implement scalable software architectures while leading development projects to ensure timely, high-quality delivery.
• Drive continuous improvement in engineering practices, mentor team members, and collaborate with cross-functional teams to align developments with business goals.
• Identify and resolve complex technical challenges to ensure overall software reliability and performance.
• Designing and implementing scalable and efficient software architectures.
• Writing, testing, and debugging complex code for new and existing software applications.
• Delivering code to production in a timely manner according to business expectations.
• Providing guidance and mentoring to junior engineers and team members.
• Conducting thorough code reviews to ensure code quality, security, and best practices.
• Leading and managing software development projects, ensuring timely delivery and quality.
• Collaborating closely with cross-functional teams to align development efforts with business goals.
• Communicating effectively with stakeholders, presenting technical concepts and project updates.
• Creating and maintaining comprehensive technical documentation for software development and system design.
• Researching and implementing new technologies and methodologies to improve software performance and development processes.
• Identifying and resolving complex software issues and technical challenges.
• Developing and enforcing testing protocols to ensure software reliability and performance.
• Driving continuous improvement in software development practices and processes.

Senior Front End Developer

• Develop highly engaging, interactive, and high-performance Playable Ads using PixiJS
• Optimize assets and code to achieve the absolute minimum bundle size and fastest load times
• Build and package playables to meet the technical specifications of various ad networks (AppLovin, Unity Ads, IronSource, Google, Meta, etc.)
• Collaborate closely with artists and animators to translate visual ideas into lightweight, interactive web gameplay
• Implement custom tracking, call-to-action (CTA) triggers, and MRAID/ad network SDK integrations
• Ensure cross-browser and cross-device compatibility (especially for low-to-mid-tier mobile devices)

Middle Developer – Pixi.JS, Playable Ads

• Build and evolve backend services and APIs as your primary focus
• Design, implement, and operate REST APIs and services in Python
• Build durable data models and data access using PostgreSQL (or comparable RDBMS)
• Improve reliability and operability through logging, metrics, tracing, and robust error handling
• Deliver and maintain WebApp features by building UI functionality using React (hooks)
• Implement consistent UI with HTML/CSS and Tailwind CSS
• Integrate APIs and handle routing/state patterns as needed (Redux is a plus, not required)
• Ship and maintain cloud infrastructure using AWS CDK (TypeScript or Python)
• Work with AWS serverless services (e.g., API Gateway, Lambda) and deployment pipelines
• Contribute to CI/CD and DevOps practices to ship safely and often

Senior Full Stack Developer – Contract

Android Engineer

• Develop and maintain Chess.com's flagship Android application to serve 185M+ global chess players with high-performance, scalable mobile experiences
• Design and implement shared codebase architecture across our Android ecosystem to maximize development efficiency and code reusability
• Collaborate cross-functionally with design, product management, data analytics, coaching, and titled player teams to translate business requirements into technical solutions and enhance user experience
• Optimize application performance and user experience through code reviews, performance monitoring, and implementation of Android best practices
• Contribute to technical architecture decisions for mobile platform scalability and maintainability as the user base grows
• Maintain and improve development workflows to support rapid iteration and deployment cycles in a fully distributed team environment

• Diseñar, construir, probar y optimizar servicios backend de calidad de producción
• Colaborar con equipos multidisciplinarios para desarrollar aplicaciones empresariales
• Mentorear a otros ingenieros y contribuir a estándares de arquitectura

Lead Software Engineer

• Scope ambiguous customer asks, prototype quickly, and iterate into stable customer deployments using Tailor’s platform.
• Engage with customers with our Forward Deployed Product Manager to understand the customer needs, and iterate into stable customer deployments using Tailor’s platform.
• Productize repeatable solutions, turning bespoke implementations into scalable modules for accounting, e-commerce, logistics, and other workflows.
• Build and ship production-grade features across our stack — from front-end UIs to backend APIs, integrations, and data models.
• Work with the founding team to shape engineering standards, developer experience, and platform architecture as we grow.

Full-Stack Software Engineer

• Shaping the roadmap for your product at global sprints every six months
• Focusing on design and user experience, even for developer tooling and command line apps
• Writing high quality, resilient and performant code, potentially serving millions of demanding daily users
• Working towards mastery of key programming languages and Linux system knowledge
• Engaging with users and the open source community through code reviews and issue trackers
• Responding to customer issues as a priority, develop an understanding of enterprise requirements
• Developing skills and awareness of security in software design and implementation

Graduate Software Engineer, Open Source, Linux

• Take vague, high-level goals and turn them into shipped, working software with minimal hand-holding
• Own large scopes end-to-end: break down the problem, sequence the work, and drive it to done
• Make UX and scope judgment calls independently — know what's worth building and what to cut
• Work in tight iteration loops — ship something working fast, then refine based on real feedback
• Use agentic coding tools (Claude Code, Codex, or similar) as a core part of your daily workflow — delegate grunt work to the tools and steer them to good output
• Surface blockers, tradeoffs, and decisions early and clearly, without needing to be managed

Product Engineer

iOS Engineer

• This project focuses on recording and annotating audio interactions to support the development of advanced voice-controlled technologies.
• This is a short project that includes a few tasks consisting of interacting with various applications in different environments.
• The task will be carried out using a macOS computer device.
• The process is supported through detailed project manuals, with optional kick-off sessions available to provide clarification and assistance on technical and procedural aspects.

Standard Arabic Linguistic Project – macOS

• Expand and strengthen core P2P networking and storage primitives
• Work on wide surface area of P2P technology

P2P Node.js Engineer

• Design and implement scalable, efficient, and secure enterprise-level software architectures across our .NET stack.
• Write, test, and debug complex code for high-load systems with strict latency and reliability requirements.
• Deliver clean code to production in a timely manner, balancing business speed with technical excellence.
• Identify and eliminate performance bottlenecks across CPU, memory, I/O, and database layers.
• Conduct thorough code reviews to enforce strict code quality, security, and industry best practices.
• Develop and enforce testing protocols to guarantee software reliability and flawless production performance.
• Implement and monitor production observability frameworks, including logging, metrics, monitoring, and distributed tracing.
• Create and maintain concise, meaningful technical documentation for system designs and architecture.
• Provide guidance and mentorship to junior and mid-level engineers, actively fostering their technical growth.
• Partner with Delivery Managers to lead and manage software development projects, ensuring predictable, high-quality delivery.
• Collaborate closely with product management, design, and operations teams to align technical execution with business goals.
• Communicate effectively with stakeholders, translating complex technical concepts into clear project updates.

Senior Full-Stack .NET Engineer – Node.js, Go

• Providing technical guidance and expertise to the team.
• Supporting architectural and technology-related decision-making throughout the project lifecycle.
• Mentoring team members on a regular basis to promote professional growth and knowledge sharing.
• Fostering a culture of empowerment, innovation, and effective problem-solving within the team.
• Participating actively in code reviews to ensure high standards of code quality and maintainability.
• Taking part in Agile ceremonies and contributing to continuous team improvement.
• Identifying, assessing, and helping resolve technical risks, issues, and project impediments.
• Delivering constructive technical feedback and conducting reviews to support team success.
• Resolving technology-related challenges that may hinder development progress.

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