Software Developer in Test (SDET)

Status
Mumbai, India
Full time
Hybrid
Compensation is not specified
Role
Software Engineer
Description

Job Overview:

R3 envisions a world where value flows freely, and business transactions are secure. The company's mission is to promote an open, reliable, and enduring digital economy. As a growing organization with the spirit of a startup, R3 values a dynamic work environment where innovation is encouraged and every day presents new opportunities.

About R3 Professional Services:

The Professional Services team at R3 specializes in providing expert guidance on Corda technology to ensure successful implementation for our clients. Working closely with customers, the team designs, constructs, deploys, and advises on Corda solutions, catering to diverse project scopes from initial concept to full-scale executions. By leveraging strategic business consulting, technical solutions, and implementation expertise, we assist clients in resolving real-world challenges related to Digital Currencies and Digital Assets.

Our customer-centric approach enables us to assess client needs effectively, setting them up for success from the onset. Collaborating with internal departments like Sales, Engineering, and Product teams, we aim to enhance tools, services, and products in alignment with evolving customer requirements.

Responsibilities:

  • As a Professional Services SDET consultant, your role is to ensure quality assurance in client projects by utilizing your QA expertise.
  • Translate customer project requirements into automated testing setups using reusable toolkits.
  • Contribute to the development of JVM-based test automation frameworks.
  • Create and execute functional and non-functional test cases within the automation framework utilizing tools like JMeter.
  • Author comprehensive documentation for automated processes, including test plans and procedures.
  • Identify and document bugs within the tracking system.
  • Collaborate with internal and external teams to address testing, deployment, and operation challenges related to blockchain networks.
  • Communicate project progress, risks, issues, and advocate for QA best practices during project delivery cycles.

Requirements:

  • 5+ years of experience in designing and implementing QA automated test suites.
  • Proficiency in Java or other JVM languages for writing effective test automation scripts.
  • Familiarity with BDD tools such as Cucumber and Serenity (5+ years experience).
  • Knowledge of API testing tools like REST Assured, RestSharp, JMeter.
  • Experience with Continuous Integration tools like Jenkins, Bitbucket, Github.
  • Ability to organize tasks and plans for API and back-end testing activities.
  • Track record of delivering test automation for complex software systems.
  • Strong understanding of cloud-based technology stack for building robust test solutions.
  • Capability to work independently as an SDET and collaborate across teams to drive project features to production.

R3 pioneers the digital finance landscape with multi-party solutions that enhance digital trust and enable significant opportunities for regulated enterprises. Grounded in core values of Collaboration, Ownership, Boldness, and Customer Focus, R3's flagship DLT platform, Corda, is the preferred choice of leading financial institutions globally, including FMIs, exchanges, central banks, and commercial banks.

With a commitment to diversity and inclusivity, R3 fosters a workplace that celebrates individual uniqueness and values differences. The company welcomes individuals of all backgrounds, emphasizing support for various ethnicities, races, genders, sexual orientations, origins, disabilities, veteran statuses, and cultural identities. R3 believes in the strength of diversity and encourages individuals who resonate with its values to apply, even if not meeting all listed criteria. If you are eager to collaborate with a bold and innovative team, share your CV/resume with us for consideration at R3.

Skills Required
Avatar
r3
Website
r3.com
Company size
Not specified
Location
United States
Description
Not specified
Status

More Full-time Jobs

Show more

AI-Native Full-Stack Product Engineer

Tallinn, Estonia +9
Tallinn, Estonia +9
Full time
Remote
About Us
We are an AI & Blockchain company building the financial infrastructure for the AI age. We have customers in 19 countries, and our team is an international mix of remote talents with two core locations in Singapore and Dubai.
We raised $2.8M in funding and are expanding our team, with new products across SaaS and retail. By joining now, you’ll have the unique opportunity to work directly with founders who have made multiple exits, and build the future of AI and finance.
About You
You are a full-stack product engineer who can turn ideas into products from 0 to 1, using modern agentic coding tools without losing engineering judgment. This is not a simple vibe-coding role. You need to know how to code, reason about systems, identify poor abstractions, avoid AI-generated slop, and ship software that is readable, maintainable, and useful. You should be able to sit with a product idea, identify the core user flow, design the first version, build the front end, wire up the back end, leverage AI tools aggressively, and still have the engineering judgment to know when the code is wrong.
Your Profile
Full-stack engineer with real product taste.
AI-native, but not AI-dependent.
Comfortable shipping across front end, back end, database, infra, and third-party APIs.
Able to use coding agents deeply while maintaining control over architecture and quality.
Good at detecting slop: messy code, fake abstractions, weak tests, security gaps, bad UX, and hidden complexity.
Independent, fast, curious, and comfortable with ambiguity.
Your Work
Build products and tools from scratch.
Use AI coding tools to materially increase shipping speed.
Work across React/Next.js, Node/Python, databases, APIs, authentication, cloud platforms, and similar technologies.
Turn product ideas and UX concepts into useful software with minimal direction.
5,833-7,917
Monthly
See details

Chief Technology Officer (CTO) / Senior Full-Stack Developer (Web3)

London, UK
London, UK
Full time
Remote
About the Role
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.
Payment in Crypto
7,500-11,000
Monthly
See details

Backend Engineer with hands-on blockchain experience

Full time
Remote
We are building a modern hotel booking platform enhanced with Web3 capabilities, includingtoken-based payments, on-chain verification, and decentralized identity/ownership features.We’re looking for a Backend Engineer to design and build scalable backend systems andintegrate them with blockchain infrastructure. You’ll work closely with frontend and Web3engineers to deliver a seamless and reliable platform. 
Payment in Crypto
13,000-17,000
Monthly
See details

Senior Blockchain Engineer (Cosmos SDK & IBC)

Hong Kong
Hong Kong
Full time
Remote
Merklio is expanding its cross-chain orchestration layer. We are building a sovereign app-chain (Rollup-style) that aggregates liquidity from multiple L1s via IBC. We need a Blockchain Engineer to design, implement, and maintain our Cosmos-based chain.
Expectations:
Design custom modules (x/staking, x/rewards, x/merkl)
Implement IBC light clients and relayers
Optimize block time and state pruning
Write comprehensive unit & integration tests (Go test)
Build CLI tools for validators and delegators
Monitor node health and network upgrades
Collaborate with the research team on MEV-resistant ordering
Maintain chain upgrades (v1 → v2) with migration scripts
Write technical documentation for external validators
Nice to have:
Experience with Avalanche Subnets or Polkadot Substrate
Knowledge of HSM and key management
Open-source contributions to Cosmos SDK or related repos
Chinese+English language proficiency
Payment in Crypto
7,000-10,000
Monthly
See details

Senior Mobile application developer

Full time
Remote
I am looking for a developer who has much experience in Mobile application development.
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
Payment in Crypto
300-1,000
Monthly
See details