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Overview

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.

But that’s just the beginning:

Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.

Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.

Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.

Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.

Are you ready to be part of the future?

About the job:

As a Senior SDK Developer, you will be a part of the team that works on the development of the new and cutting edge Tether AI SDK.

Responsibilities

• Developer-Facing SDKs & APIs: Tether is committed to delivering world-class developer experiences through robust and intuitive SDKs. You will design, build, and maintain modular, versioned SDKs that abstract complex backend logic into clean, usable interfaces — enabling seamless integration with Tether’s platform across various client environments.
• Performance & Reliability at Scale: SDKs must be fast, lightweight, and reliable — even when performing heavy and demanding operations. You’ll design resilient logic (retry policies, offline handling, batching) and contribute to the scalability of platform-facing interfaces and services powering the SDKs.
• Security-First Engineering: You’ll embed best-in-class security practices directly into the SDK architecture, including secure communication, encrypted storage and rigorous input validation. Your work will help ensure safe integration pathways for all developers working with the Tether ecosystem.

• +6 years of experience working with Nodejs/JavaScript in production environments.
• Proven track record in designing and maintaining developer-facing SDKs (npm packages, API clients, or instrumentation libraries).
• Strong understanding of modular architecture, versioning strategies, and semantic API design.
• Have actively participated in the development of a complex platform.
• Experience with AI domain applications (RAG, Agents, Inference, AI SDKs).
• Ability to quickly learn new technologies.
• Good understanding of security practices.

Nice to have

• Familiar with Peer-to-Peer technologies (Kademlia, bittorent, libp2p).
• Comfortable with high-availability concepts.
• Rust or C++ skills are a plus.

• Familiarity with real-time data delivery (NodeJS/other streaming).

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Rithum is the world's most trusted commerce network, accelerating how brands, suppliers, and retailers work together to deliver seamless e-commerce experiences. We provide an unmatched platform for brands and retailers, enabling them to accelerate growth, optimise operations across channels, scale product offerings and enhance margins.
Today, more than 40,000 companies trust Rithum to grow their business across hundreds of channels, representing over $50 billion in annual GMV. Using our commerce, marketing, and delivery solutions, our customers create optimised consumer shopping journeys from beginning to end.
**Overview**
The Engineering Team employs some of the top engineering talent who are constantly working to improve processes, quality and techniques, with the goal of producing the highest quality software solutions in the industry. The lines between traditional QA and software engineering are blurred here, with quality being considered at all stages of development. Our team is comprised of very talented and highly motivated individuals, who pride themselves on working smarter, not harder. We're empowered to make local decisions, reducing the overhead of getting things done. We aim for operational excellence, having a DevOps culture and a "you build it, you run it" mentality. We favor a Lean approach to our product development, following agile workflows such as Scrum and Kanban depending on the directive of the team. We welcome new technologies and are constantly self-evaluating our tech stack to make sure we are providing software of the highest quality. Continuous Delivery is important to us, and we are constantly looking to improve our automated testing and continuous integration.
As a Software Engineer for our Retailers business function, you develop, write, and test code for software applications or systems. You are responsible for supporting your software engineering team, ensuring quality standards, and striving for innovation in meeting our business goals.
**Responsibilities**
+ Participate in reviewing code written by peers and receive feedback on your own code to ensure quality and maintainable software development.
+ Learn new technologies, languages, tools, and best practices. We expect our Software Engineers to be proactive in improving their skills and staying updated with the latest trends in software development.
+ Engage in the software development process utilizing agile methodologies. This includes contributing to sprints, user stories, and participating in sprint reviews & retrospectives.
+ Manage medium to large-sized tasks or features assigned by senior engineers, delivering them on time and to specification.
+ Participate in the analysis of feature requirements or issues and propose solutions. You may be involved in solving technical challenges related to performance, scalability, or user experience. Occasionally perform research or develop prototypes to test out new ideas, frameworks, or technologies.
+ Partner with Product/User Experience designers to bring to life excellent client experiences.
+ Help to mentor more junior members of your team
+ Understanding of relevant software development tools including version control, build processes, debuggers, and test frameworks
+ Diagnose and fix software defects or bugs reported by users or uncovered during testing
+ Participate in on-call rotation
+ Understanding and utilization of software development tools including version control, building processes, debuggers, and test frameworks for:
+ Primary technologies (may include):
+ Java, JavaScript, JavaServer Pages, Typescript,
+ Angular, React.js,
+ Python, Node.js
+ Secondary technologies
+ AWS services (OpenSearch, Lambda, DynamoDB, Kinesis, RDS, ECS, and others)
+ SOAP/REST web service APIs
+ Redis, NoSQL
+ Microsoft SQL Server
**Qualifications**
Minimum Qualifications
+ 2+ years' experience developing in Angular, Typescript, JavaScript or Node.js.
+ 2+ years' experience developing in AWS Technologies
+ 1+ years of AI/ML experience with a strong technical focus
+ Proficiency in Python, TensorFlow/PyTorch, or cloud platforms
+ Strong verbal and written English communication skills
+ Experience developing web applications, working with databases, and consuming APIs
+ Understanding of relevant software development tools including version control, build processes and test frameworks
+ Ability to work independently with limited supervision
Preferred Qualifications
+ 1+ years of AI/ML experience with a strong technical AND strategic focus
+ 1+ years' expertise in machine learning algorithms, NLP, computer vision, or large-scale deployment.
+ 1+ years' experience in creating data systems for feature stores or vector databases.
+ Experience with cloud computing infrastructures such as AWS or Azure
+ Use of source code repositories such as Azure DevOps and Git
+ Experience working with SQL Server and NoSQL databases
+ Experience performance tuning and optimizing high scale systems
+ Experience working with development teams in multiple time zones
+ Proven track record of creating secure and scalable software that scales to dozens or hundreds of servers in a distributed, fault tolerant manner
+ Experience with e-commerce, retail, online marketplaces, or digital advertising
+ Excellent analytical, decision-making and problem-solving skills
+ Proven ability to work in a rapidly changing environment with keen attention to detail
**Travel Required**
Up to 10%
**Other Duties**
_Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice._
**What it's like to work at Rithum**
When you join Rithum, you can expect to work with smart risk-takers, courageous collaborators, and curious minds.
As part of the Rithum team, you are valued, supported, and included. Guided by a transparent culture and accessible, approachable leadership, we offer career opportunities aligned to your ambitions and talents. To ensure work and life balance works for you, we also offer an array of resources to support you and your families, including comprehensive benefits and wellness plans.
At Rithum you will:
+ Partner with the leading brands and retailers.
+ Connect with passionate professionals who will help support your goals.
+ Participate in an inclusive, welcoming work atmosphere.
+ Achieve work-life balance through remote-first working conditions, generous time off, and wellness days.
+ Receive industry-competitive compensation and total rewards benefits.
**Benefits**
+ Medical, Dental and Psychology benefits
+ Life insurance and disability benefits
+ Competitive time off package with 25 Days of PTO, 13 Company-Paid Holidays, 2 Wellness days and 1 Paid Volunteer Day
+ Voucher program for Transportation, Meals & Childcare
+ Work from the Madrid co-working space, if desired
+ Remote Working Stipend: 40/month automatically applied in payroll
+ Access to tools to support your wellbeing such as the Calm App and an Employee Assistance Program
+ Professional development stipend and learning and development offerings to help you build the skills and connections you need to move forward in your career.
+ Charitable contribution match per team member
Rithum is an equal opportunity employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates without regard to race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other protected characteristic. All employment is decided on the basis of qualifications, merit, and business need.
We're committed to providing reasonable accommodations in accordance with the law for qualified applicants. If you require assistance during the interview process due to a medical condition or need support accessing our website or completing the application process, please reach out to us by completing the Accommodations Request Form ( . Your comfort and accessibility are important to us, and we're here to ensure a seamless experience as you explore opportunities with our team.

We are looking for candidates for a permanent position based in Barcelona, Spain for the role of Software Development Engineer II.
As a Software Engineer in our Smartpoint Cloud team, you will help shape the storefront that transforms how agents sell and service trips. You’ll work in a collaborative, agile team where engineering and product development go hand in hand, and where your contributions will have a visible impact on millions of travelers.
Designing and delivering clean, robust, well tested code in an agile, test-driven development environment.
Design, build, and deliver scalable front-end applications in React + TypeScript.
Contribute to microservices development in Node.Js and C#/.NET Core, depending on service ownership.
Write clean, tested, maintainable code following TDD and best practices.
Support CI/CD pipelines, containerization, and cloud deployments (Docker, Kubernetes, Azure).
Experience building modern web applications or services.
Strong skills in JavaScript/TypeScript (ES6+).
Hands-on experience with React (hooks, state management, Redux), HTML5, CSS.
Familiarity with RESTful APIs (GraphQL a plus), and understanding of modern web services.
Exposure to Node.Js microservices and/or C# .NET Core services.
Experience with testing frameworks such as Jest, React Testing Library, xUnit.
Comfort working with containerized apps (Docker, Kubernetes).
Experience with C# and .NET Core
Knowledge of AWS or Azure cloud services.
Familiarity with CI/CD and DevOps best practices.
Infotree Global Solutions

We at Mars Petcare believe in making a better world for pets and we want to do this through transforming our relationships with Pet Owners through delivering excellent products, services and personalized experiences with our brands. The Digital Products, Platforms & Services team is a newly formed team sits within Growth, Digital & Platforms (GDP) global function and is responsible for designing, developing & rolling out state-of-the-art digital products across brands, regions & divisions globally and help our brands accelerate organic growth.
We are looking for a technically skilled, highly motivated, and proactive Software Engineer Tech Lead to join our team dedicated to building and maintaining our cutting-edge Customer Data Platform (CDP). As a Software Engineer Tech Lead you will play a crucial role in designing, developing, deploying and optimizing the backend software infrastructure that powers our CDP, enabling seamless data processing and management.
Extensive experience in backend development, with expert proficiency JAVA and Python.
Proficient with making engineering tradeoffs for large scale data movement while being mindful of the SLAs and compute load demands
Influencing skills in a complex and ambiguous multi-country multi-brand transformation environment
Proven expertise in Agile development methodologies, particularly Scrum, with a successful track record of leading and managing teams in an Agile environment.
Docker), contributing to scalable and modular backend solutions.
Proficiency in Java and JavaScript
Experience in or exposure to frontend development technologies (e.G., React, Angular), facilitating effective collaboration with frontend teams.
Knowledge of cloud platforms (e.G., AWS, Azure, GCP) and services, enhancing scalability and resilience of backend solutions.
Mars is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. The company is pleased to provide such assistance, and no applicant will be penalized as a result of such a request.

Overview

We're Hiring : Mid / Senior JavaScript Developer

Algorath is looking for a talented Mid / Senior JavaScript Developer to join our team in Málaga. If you are passionate about front-end development, enjoy mentoring others, and want to take the lead in innovative projects, this is your opportunity to make a real impact.

Responsibilities

• Drive the development of modern web applications using React and JavaScript.
• Mentor and support junior developers, fostering a collaborative and growth-oriented environment.
• Design and implement robust, scalable, and high-quality front-end solutions.
• Play a key role in new projects, ensuring technical excellence and innovation.
• Work with version control (GitHub) and other front-end technologies to deliver outstanding results.

Qualifications

• 4+ years of professional experience in front-end development.
• Strong expertise in React (minimum 4 years).
• Solid knowledge of JavaScript, TypeScript, and other frameworks (e.G., Angular).
• Experience with GraphQL and Material UI.
• B2 level English or higher (mandatory).
• Proven leadership skills with the ability to guide and inspire teams.
• Bonus points for experience with broader tech stacks : Kubernetes, Docker, Go, CI / CD, Cloud environments, and PostgreSQL.

What We Offer

• Hybrid work model with flexible hours.
• Private healthcare insurance.
• 24 vacation days per year.
• Regular team-building activities.
• A chance to lead exciting projects with real impact.
• Work alongside a diverse, talented, and supportive team.
• Competitive salary and benefits package.

Location

Málaga, Spain (Hybrid)

Candidates must be based in Málaga or nearby areas.

How to Apply

Ready to grow your career and shape the future with us?

Apply now by sending your resume

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