{"id":1201643,"url":"https://alion.io/job/paystand-senior-fullstack-engineer-2","title":"Senior Fullstack Engineer","company":{"id":20410,"name":"Paystand","domain":"paystand.com","url":"https://alion.io/company/paystand","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":70,"open_postings":12,"ghost_share":0.5,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":35,"computed_at":"2026-09-26T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Guadalajara, Mexico"],"countries":["MX"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":126000,"period":"year","method":"role_seniority_country_cell","sample_n":11},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AI Agents","optional":false},{"name":"Angular","optional":false},{"name":"AWS","optional":false},{"name":"Bitcoin","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Claude Code","optional":false},{"name":"Cloudflare","optional":false},{"name":"DNS","optional":false},{"name":"Elixir","optional":false},{"name":"Function Calling","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Human-in-the-Loop","optional":false},{"name":"Java","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Machine Learning","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Structured Outputs","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false},{"name":"Vue.js","optional":false},{"name":"Agentic Workflows","optional":true},{"name":"JavaScript","optional":true},{"name":"Smart Contracts","optional":true}],"status":"live","first_seen_at":"2026-09-24T19:00:00Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-09-27T00:15:42Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":2},"description":"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.\nPaystand'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.\nWhat We Do\nWe 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.\nWhy We Do It\nThe 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.\nHow We Do It\nWe 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.\nJoin Us\nWe'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.\nRole at a Glance\nWe're seeking a talented Full-Stack Engineer to play a key role in architecting and implementing user-facing components of the Paystand open banking network. As a member of our dynamic team, you'll collaborate closely with product owners, designers, and fellow engineers to craft web applications that redefine user interactions.\nAI-First Engineering Expectations\nPaystand is an AI-first organization. As a FullStack Engineer, you are expected to:\nWe believe in augmenting human engineering with intelligence. As an AI-first organization, our expectations for this role reflect that commitment:\nLeverage AI-powered coding assistants to accelerate development velocity and maintain high code quality.\nArchitect systems with AI integration in mind, ensuring our web applications can seamlessly interface with machine learning models and data pipelines.\nProactively identify and automate manual engineering workflows-such as testing, documentation, and infrastructure management-using AI tools.\nDrive technical innovation by actively integrating the latest AI development frameworks and practices into our stack.\nRole and Key Responsibilities\nLead the architecture and implementation of user-facing parts of Paystand’s systems.\nDesign and develop reusable libraries and frameworks that support complex web applications.\nProvide technical leadership and mentorship to other engineers.\nCollaborate with product owners, designers, and other engineers to build the best user experience, ensuring high standards of quality and performance.\nEnsure best practices in code quality, security, and performance.\nParticipate in and influence all phases of the development lifecycle, including system analysis, design, coding, testing, debugging, and documentation.\nAdvocate for and implement continuous improvement in the development processes and practices.\nRequirements & Qualifications\nBuilder Experience\n7+ years of professional software engineering experience, with a track record of independently delivering meaningful products or major capabilities from concept through production.\nStrong full-stack capability and the judgment to work across frontend, backend, data, infrastructure, and integrations as the product requires.\nAble to move from an ambiguous business problem to a practical solution: clarify the problem, evaluate tradeoffs, establish an architecture, build the product, deploy it, and improve it using production feedback.\nComfortable making progress without a fully prescribed specification while knowing when alignment, deeper analysis, or broader architectural review is needed.\nAI-Native Development:\nFluency with AI-assisted and agent-led software development using tools such as Claude, Claude Code, OpenAI Codex, or comparable platforms.\nExperience using AI throughout the engineering lifecycle-not only for code generation, but also for discovery, architecture, implementation planning, testing, debugging, documentation, code review, and operational analysis.\nAbility to provide agents with effective context, decompose work into verifiable tasks, evaluate generated solutions critically, and maintain responsibility for correctness, security, and maintainability.\nPractical understanding of building AI-enabled product capabilities using model APIs, structured outputs, tool calling, retrieval, evaluations, guardrails, and human-in-the-loop workflows.\nStrong engineering judgment about where AI increases leverage and where deterministic software, conventional automation, or direct human review is more appropriate.\nArchitecture and Engineering:\nStrong understanding of modern application architecture, including modular system design, API design, asynchronous and event-driven processing, data consistency, caching, and integration patterns.\nDemonstrated ability to design systems that can evolve and scale without introducing unnecessary complexity.\nExperience making and documenting architectural decisions based on reliability, security, performance, cost, maintainability, and speed of delivery.\nPractical experience with relational databases, data modeling, distributed systems, observability, automated testing, and production troubleshooting.\nFamiliarity with secure engineering practices appropriate for financial or other high-trust systems, including authorization, data protection, auditability, failure recovery, and idempotent processing.\nFull-Stack Product Development:\nStrong experience with at least one modern frontend ecosystem, such as React, Next.js, Vue, or Angular, including component architecture, state management, accessibility, performance, and responsive design.\nStrong experience with at least one production backend ecosystem, such as Node.js/TypeScript, Python, Java, Go, Elixir, or a comparable framework.\nAbility to design clear APIs and data contracts and integrate with internal services, third-party platforms, and legacy systems.\nProduct-minded approach to frontend development, with attention to workflows, usability, edge cases, and the complete customer experience-not simply implementation from a design file.\nWillingness and ability to learn unfamiliar frameworks or technologies when they are the right choice for the product.\nCloud, Scaling, and Delivery:\nHands-on experience designing, deploying, and operating production systems on AWS or Google Cloud.\nWorking knowledge of Cloudflare capabilities such as DNS, CDN, edge security, traffic management, Workers, or related edge infrastructure.\nExperience with containers, infrastructure as code, CI/CD, environment management, secrets management, and automated deployment practices.\nUnderstanding of horizontal scaling, load management, queues, caching, database scaling, fault tolerance, disaster recovery, and multi-region considerations.\nAbility to build useful observability into a product through logs, metrics, traces, alerts, and business-level workflow monitoring.\nComfortable owning software after release, including production health, incident response, root-cause analysis, and continuous improvement.\nProduct Ownership and Leadership:\nProduct mindset with the ability to co-own a product area alongside a product manager, from customer problem and business outcome through technical delivery and adoption.\nAble to challenge assumptions, identify simpler solutions, define incremental releases, and balance immediate customer value with long-term technical health.\nStrong written and verbal communication, including the ability to explain technical decisions and tradeoffs to engineering, product, design, operations, and business stakeholders.\nDemonstrated technical leadership through architecture, execution, code review, mentorship, and raising engineering standards.\nHigh degree of ownership, curiosity, pragmatism, and follow-through.\nBonus Skills\nExperience building payment, fintech, accounting, ERP, banking, or other transaction-intensive products.\nExperience with high-integrity workflows involving money movement, reconciliation, ledgers, approvals, or external financial integrations.\nExperience building or operating AI agents and agentic workflows in production, including evaluation, monitoring, security, and cost management.\nFamiliarity with workflow orchestration, event streaming, or durable execution technologies.\nExperience with blockchain, digital assets, smart contracts, or decentralized systems is valuable but not required.\nContributions to open-source software, technical communities, or other evidence of active building and continued learning.\nPerks & Benefits\nSalary + competitive equity in a high-growth-stage startup.\nGenerous PTO (vacations) and sick days.\nFree snacks and paid lunch in the office.\nMajor Medical Health Insurance.\nFood Vouchers.\nStock Options.\nYour own equipment and tools.\nOpportunity for advancement and growth in a rapidly expanding team.\nMentorship, learning and education programs.\nSmart, high-achievers, motivated team that likes to have fun.\nMission-driven culture, where your work matters.\nIf 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.\nWe 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.\nMore 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.\nWe 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.\nYour 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.\nMost of our roles are onsite. Positions that are eligible for remote or hybrid work arrangements will be clearly indicated in the job posting.\nFor roles based in Mexico, only resumes submitted in English will be considered.#LI-Onsite","description_format":"text","description_chars":11247,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Health insurance","Hybrid work","Stock options"],"hiring_locations":[{"name":"Mexico","iso":"MX","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cryptocurrencies","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-09-24T21:12:05Z"}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":1,"expected_fill_days":35,"reasons":["conf:4","stale_co","velocity","win:early"],"computed_at":"2026-09-26T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/paystand-senior-fullstack-engineer-2","json_url":"https://alion.io/job/paystand-senior-fullstack-engineer-2.json","meta":{"generated_at":"2026-09-27T01:14:19Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1096,"day_limit":5000,"remaining_today":3904,"minute_limit":60,"resets_at":"2026-09-28T00:00:00Z"}}}