Junior Fullstack Engineer

Reposted 4 Days Ago
Be an Early Applicant
Hermosillo, Sonora, MEX
In-Office
Senior level
Blockchain • Fintech • Payments • Software • Financial Services • Cryptocurrency
Paystand
The Role
Lead architecture and implementation of user-facing web applications and reusable libraries. Provide technical mentorship, collaborate with product and design teams, and drive improvements in quality, security, performance, and development practices. Build scalable RESTful services and APIs while participating across system analysis, design, coding, testing, debugging, documentation, and deployment.
Summary Generated by Built In

Paystand is the world's leading blockchain-enabled B2B payments network, transforming commercial finance into a software-driven, zero-fee, and open ecosystem. Recognized as a CNBC/Statista 2026 World's Top Fintech company, Paystand delivers over a decade of on-chain payments experience to middle and large enterprises.

Paystand's network services more than one million payors that have moved $20+ billion in volume. With its acquisitions of Yaydoo, Teampay and Bitwage, Paystand's full-stack platform includes agentic AI, its USDb stablecoin, and AR/AP solutions on one tightly integrated network. Its non-profit arm, Paystand.org, advances the mission to democratize finance through Bitcoin and blockchain technology.

What We Do

We built the financial system we always thought should exist: zero fees, zero friction, just your money, faster. Blockchain automates receivables and payables, cuts time-to-cash, and turns every transaction into revenue instead of cost.

Why We Do It

The current system takes a cut from the people who build, create, and grow — and calls it the cost of doing business. We don't buy that. Every fee we eliminate compounds into growth. We're here to decentralize finance and hand the power back to the businesses driving the real economy — extended further through Paystand.org's work to democratize finance through Bitcoin and blockchain.

How We Do It

We don't wait for permission or for the industry to catch up — we build the future of finance ourselves, on-chain, in the open. Small moves now, monumental results later.

Join Us

We're not looking for people who want a job in fintech. We're looking for people who want to build what comes after it. Paystand is where you help lead a financial revolution instead of just reading about one. We stand on change. Come stand with us.

 

Role at a Glance

AI is core to how we build Paystand’s open banking network and transform how businesses pay and get paid. We’re seeking a Junior Full-Stack Engineer ready to tackle meaningful technical challenges and ship customer-facing payment experiences. You’ll combine AI-assisted development with sound engineering judgment, ensuring your solutions fit the broader product. Working alongside experienced engineers, you’ll own scoped frontend and backend projects, move quickly, and grow your capabilities while building software that businesses depend on.

AI-First Engineering Expectations

Paystand is an AI-first organization. We expect engineers at every level to combine AI-powered development with the technical judgment needed to build reliable software. As a Junior Full-Stack Engineer, you are expected to:

  • Apply AI coding assistants and development agents across implementation, testing, debugging, and documentation to increase development velocity while maintaining engineering standards.
  • Provide AI tools with clear requirements, relevant codebase context, and acceptance criteria. Critically review generated code, verify its behavior, and ensure it aligns with customer needs and existing architecture.
  • Develop AI-enabled features and integrations using established architectural patterns, with technical guidance and review from experienced engineers.
  • Identify opportunities to automate repetitive engineering tasks and implement improvements to testing, documentation, and development workflows.
  • Evaluate emerging AI tools and development practices, assess their value for Paystand’s engineering workflows, and contribute to their adoption within the team.
Role and Key Responsibilities
  • Deliver frontend and backend features for Paystand’s open banking network, taking ownership of scoped work from implementation through release with guidance from experienced engineers.
  • Build reusable components, APIs, and service integrations that follow established architectural patterns and support maintainable applications.
  • Collaborate with product owners, designers, and engineers to translate customer and business needs into reliable, intuitive payment experiences.
  • Write maintainable code, develop automated tests, and troubleshoot defects to meet engineering standards for correctness, security, and performance.
  • Contribute to technical discussions and code reviews, incorporate feedback, and communicate progress, dependencies, and blockers to support timely delivery.
Requirements & Qualifications
  • AI-assisted development: Hands-on experience with AI coding assistants and development agents such as Claude Code, OpenAI Codex, or comparable tools. Ability to provide clear requirements and relevant codebase context, critically evaluate generated code, and explain how a solution meets customer needs and integrates with existing systems.
  • Builder experience: 1–2 years of relevant software development experience, including internships, or demonstrated ability through substantial personal, academic, or open-source projects. Ability to explain your contributions, technical decisions, and how you validated the results.
  • Frontend development: Practical experience with JavaScript or TypeScript, HTML, CSS, and a modern framework such as React, Next.js, Vue, or Angular, with attention to usability and responsive design.
  • Backend development: Practical experience with a backend language or framework, such as Node.js, Python, Java, or Go, including building or integrating REST APIs and working with application data.
  • Engineering fundamentals: Understanding of modular code design, relational databases, SQL, and Git-based workflows, including branches, pull requests, and code reviews.
  • Cloud and delivery: Familiarity with deploying applications to AWS, Google Cloud, or a comparable platform, including through personal or academic projects. Basic understanding of CI/CD pipelines, environment configuration, and application logs, with the ability to follow established deployment workflows and troubleshoot issues with guidance.
  • Quality and problem-solving: Ability to debug issues systematically, write automated tests, and validate functionality and edge cases. Foundational understanding of secure coding practices, including input validation, access controls, and handling sensitive information.
  • Product thinking and collaboration: Ability to connect implementation decisions to customer and business needs, explain technical reasoning, ask focused questions, and incorporate feedback from engineering, product, and design.
  • Self-directed learning and ownership: Initiative to navigate unfamiliar codebases, research and test solutions independently, and contribute early, while asking focused questions, escalating blockers, and following through on delivery.
Perks & Benefits

At Paystand, we offer a comprehensive benefits package that goes beyond statutory requirements:

  • 🛡️ Statutory benefits, including IMSS, INFONAVIT, and AFORE.
  • 🏖️ Paid vacation with an enhanced vacation premium.
  • 🎄 Annual Christmas bonus (aguinaldo).
  • 🛒 Monthly food vouchers.
  • 🏦 Savings fund with a matching company contribution.
  • 🏥 Company-provided major medical insurance.
  • 📈 Stock option eligibility under Paystand’s equity incentive plan, subject to approval.
  • 💻 Company-provided equipment and tools.

If you're passionate about driving change in the FinTech landscape and being part of a company that is shaping the future of digital payments, we invite you to explore opportunities with Paystand.

We understand that no candidate is perfectly qualified for any job. Experience manifests in diverse ways, skills are transferable, and passion is a powerful driver. Your journey and skills are unique, and we value the richness that diverse perspectives bring to our team.

More than a resume, we prioritize a genuine commitment, impactful contributions, and the ability to thrive in our dynamic, collaborative environment. We are enthusiastic about providing you with opportunities to learn and grow within this role. If your experience aligns closely with what we're seeking, we encourage you to apply.

We celebrate the belief that diversity in backgrounds and thoughts fuels better problem-solving and fosters more creative thinking. Our commitment to adding new perspectives to the team reflects our dedication to innovation and inclusivity.

Your journey is important to us, and we look forward to the possibility of welcoming you to our team at Paystand. Feel free to reach out; we can't wait to hear from you.

Most of our roles are onsite. Positions that are eligible for remote or hybrid work arrangements will be clearly indicated in the job posting.

For roles based in Mexico, only resumes submitted in English will be considered.#LI-Onsite 

Skills Required

  • Minimum 8 years building web, mobile-web, or hybrid mobile applications
  • Strong computer science and software engineering background
  • Experience architecting and building scalable RESTful web services and APIs
  • Advanced expertise in Node.js and Express.js
  • Proficiency in HTML, CSS, and JavaScript ES6 or higher
  • Knowledge of front-end frameworks such as Angular.js, React, or Vue.js
  • Experience with Sass or Less
  • Understanding of software design patterns and principles
  • Experience with cloud platforms such as AWS, Azure, or GCP
  • Proficiency with Docker and Kubernetes
  • Understanding of CI/CD pipelines and DevOps practices
  • HTML5, JavaScript, and CSS3 expertise
  • Knowledge of additional web libraries and frameworks
  • Front-end performance optimization experience
  • Experience with event-driven service architectures
  • Experience with RabbitMQ, Amazon SQS, or Kafka
  • Familiarity with Grunt or Gulp
  • Ownership of digital currencies
  • Experience deploying Bitcoin, Ethereum, or other cryptocurrency network nodes
  • Open-source contributions or active technology community involvement
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Santa Cruz, CA
400 Employees
Year Founded: 2013

What We Do

Paystand's on a mission to create a more open financial system, starting with B2B payments. Using blockchain and cloud technology, we pioneered Payments-as-a-Service to digitize and automate the entire cash lifecycle. Our software makes it possible to digitize receivables, automate processing, reduce time-to-cash, eliminate transaction fees, and enable new revenue.

Why Work With Us

At Paystand, we unlock global economic empowerment for the operators of the real economy (and the people they serve). By building an open, decentralized network of technology, companies, and people to redistribute economic advantages to those who create real value…one open transaction at a time.

Gallery

Gallery

Similar Jobs

Cloudflare Logo Cloudflare

Account Executive

Cloud • Information Technology • Security • Software • Cybersecurity
Remote or Hybrid
México
4400 Employees

Samsara Logo Samsara

Mexico Major AE

Artificial Intelligence • Cloud • Computer Vision • Hardware • Internet of Things • Software
Easy Apply
Remote or Hybrid
México
4000 Employees
500K-500K Annually

Samsara Logo Samsara

Order Management Specialist

Artificial Intelligence • Cloud • Computer Vision • Hardware • Internet of Things • Software
Easy Apply
Remote or Hybrid
México
4000 Employees

Samsara Logo Samsara

Account Validation Specialist - MX

Artificial Intelligence • Cloud • Computer Vision • Hardware • Internet of Things • Software
Easy Apply
Remote or Hybrid
México
4000 Employees

Similar Companies Hiring

Ford Energy Thumbnail
Automotive • Software • Energy • Utilities • Manufacturing • Renewable Energy
US
Revel Thumbnail
Aerospace • Hardware • Robotics • Software
Marina Del Rey, California
70 Employees
Blee Thumbnail
Artificial Intelligence • Marketing Tech • Software
New York, New York
33 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account