Source Job

• Lead the design and implementation of core backend services for high performance, complex distributed systems.
• Drive modern development practices such as BDD and TDD, creating clear, well tested code.
• Collaborate across teams, conduct code reviews, and create detailed internal documentation.

Primer provides unified infrastructure for global payments, giving finance and payments teams visibility and control from a single platform. Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer relied on by world-class companies.

• Define and drive the technical roadmap for platform infrastructure and scalability.
• Design and review complex system architectures that support company growth.
• Mentor engineers and provide technical guidance to elevate engineering capabilities.

PadSplit operates a marketplace for affordable shared housing. It is a growing company with an engineering-focused culture that values collaboration and technical excellence.

• Architect and implement scalable, performant, and secure software solutions for backend distributed platforms.
• Provide technical leadership, write clean code, and conduct code reviews to ensure best practices.
• Collaborate cross-functionally with product managers, designers, and engineers to translate business requirements into technical specifications.

Dave is a financial app that builds products to level the financial playing field for Americans who are financially vulnerable or living paycheck to paycheck. As a public fintech company, it offers a digital financial platform with products like ExtraCash and is focused on creating accessible credit options.

• Setting and driving front-end technical strategy across Account Experience teams
• Architecting a complex, data-dense merchant platform
• Shaping Primer AI Companion as a first-class merchant interface

Primer provides unified infrastructure for global payments, giving finance and payments teams visibility and control from a single platform. Backed by top investors, the company is building a remote-first, collaborative culture focused on challenging work and support.

• Own the engineering organization for the cash delivery platform, including structure, staffing, and operating model.
• Drive multi-year technical strategy, balancing build vs. buy decisions and architectural transitions for recipient impact.
• Represent engineering at leadership level, translating technical realities into business decisions and coaching engineers.

GiveDirectly delivers cash transfers to people living in poverty, having distributed over $1B to 2+ million recipients across 15 countries since 2011. The organization is one of Time100's Most Influential Companies of 2026 and fosters a candid, analytical, non-hierarchical culture that supports high ownership and professional growth.

• Own the end-to-end technical vision for the RBVM and its supporting services.
• Partner with cross functional stakeholders to translate ambiguous product and business goals into concrete technical strategy.
• Contribute production code, setting the standard for design quality, code quality, and operational rigor.

Horizon3.ai is a cybersecurity company that enables organizations to proactively find, fix, and verify exploitable attack vectors. They have a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners.

• Design and build highly scalable systems supporting millions of transactions across multiple countries and regulatory environments.
• Develop cross-border transaction infrastructure, tax compliance, and international post-purchase experiences.
• Partner with internal logistics, payments, and platform teams to build durable long-term infrastructure.

Whatnot is the largest livestream shopping platform in North America and Europe, enabling sellers to build real businesses across hundreds of categories. We're a remote co-located team of over 1,000 employees, one of the fastest growing marketplaces, and recently named #1 Best Startup Employer in America by Forbes.

• Build core systems, advanced backend products, and engineering culture for scaling enterprise automation and workflows.
• Own complex production systems, optimize internal tooling, and design AI-native engineering functions.
• Work directly with leadership on high-leverage problems like data processing, search, and AI-assisted operations.

Frontier helps fast-growing companies build full-time, cross-functional teams abroad by hiring top talent. It is a subsidiary of Fresh Prints, a New York-based, fully remote company with around 150 employees, and values work smarter culture and long-term ownership.

• Improving architecture across backend services and platform infrastructure, and defining long-term architectural strategy and technical standards across teams.
• Establish engineering standards that improve consistency, maintainability, reliability, and operational readiness.
• Mentor Senior and Staff engineers through architecture reviews, technical coaching, and project guidance.

Truffle Security is a cybersecurity company on a mission to make secrets easier to detect, verify, and remediate across modern software environments. The company's enterprise solution gives security and engineering teams everything they need to find exposed credentials. They are trusted by organizations including NVIDIA, Chick-fil-A, and OpenAI.

• Own the outcomes of a dedicated sub-area within the orchestration layer, driving impact across multiple quarters.
• Define and refine problem spaces by synthesizing merchant feedback, payment performance data, provider behavior, and platform constraints.
• Partner closely with engineering to evaluate feasibility, trade-offs, and system design decisions in a highly technical environment.

The company is a global payments orchestration platform that powers high-volume transactions across multiple providers and markets. This is a remote-first, globally distributed team that values written thinking and deep ownership.

• Collaborate with global teams and client stakeholders to design scalable solutions aligned with business objectives.
• Build and deliver high-quality backend services using agile practices like TDD and CI/CD.
• Take ownership of infrastructure automation, deployment pipelines, and production support for mission-critical systems.

Our partner builds complex, large-scale systems for enterprise and public sector clients. They emphasize agile practices, continuous delivery, and a collaborative engineering culture.

• Set technical direction for the personalization platform, building an autonomous, agent-assisted future.
• Build the intelligence layer combining LLM and classic ML to personalize marketing at scale.
• Own high-leverage problems like reliable high-volume sending, experimentation, and data quality.

Owner is an AI-native system that helps local business owners succeed, starting with restaurants. It powers everything from website, online ordering, CRM, and POS; the team is in the low hundreds with talent from top SMB software companies.

• Design, implement, and maintain our payment integrations platform, including partner APIs, SDKs, and embedded web experiences.
• Help shape and drive the technical roadmap for the Partner Engineering team.
• Design and develop scalable APIs and integrations to support money movements across banking partners via payment rails such as ACH.

Flex is a growth-stage, NYC headquartered FinTech company that creates the best rent payment experience. The company has an enthusiastic user base and is committed to radical transparency, integrity, and individual growth.

• Own and evolve core systems for freight brokerage operations including quoting, booking, pricing, and scheduling.
• Lead technical initiatives across several Python/Django services, from design to phased rollout.
• Ship high-impact product and revenue work such as pricing integrations and feature-flag strategies.

Loadsmart is a growth-stage technology company valued at over $1 billion, using innovative technology to reinvent the future of freight. With headquarters in Chicago and a globally distributed remote team, it attracts top talent committed to driving meaningful change and embodying core values like curiosity, clarity, results, commitment, and teamwork.

• Build and own backend services, infrastructure, and data systems.
• Solve complex scalability challenges.
• Gain expertise in financial systems and make a direct impact.

Devexperts works with financial institutions, delivering products and solutions for retail and brokerage houses, exchanges, and buy-side firms. They focus on trading platforms and brokerage automation, complex software development, market data products, and IT consulting.

• Set the technical direction for backend platform architecture, owning decisions spanning integrations, data, messaging, and orchestration.
• Drive cross-functional initiatives with AI Engineering, Product, and Integrations leadership, shaping platform strategy and roadmap.
• Define org-wide engineering standards for backend service design, data modeling, and operational excellence while mentoring engineers across the organization.

Conversica builds AI-powered solutions that help businesses engage customers more effectively. You'll join a small, experienced platform engineering team in a remote-first company.

• Shape the technical direction of Masabi's payments platform, contributing to architecture, standards, and engineering best practices.
• Design and deliver scalable, secure, and resilient payment solutions, supporting teams in building microservices-based architectures.
• Act as a senior technical advisor, guiding complex decisions and collaborating with external payment partners.

Masabi drives the fare payment revolution, building fare collection platforms that allow riders to buy and present tickets for public transport via mobile, ticket machines, or bank cards. Their Justride platform is used in over 250 locations globally, and they foster a collaborative, innovative culture with a network of passionate individuals.

• Lead the design of a double-entry, multi-partner sub-ledger architecture.
• Design the integration layer that lets the company add or swap partners without rewriting product code.
• Design how OFAC screening, BSA/AML signals, and in-house fraud models run inline on every money movement decision.

CertifID provides a secure platform that verifies identities, authenticates wire transfer instructions, and detects fraud attempts in real estate transactions. They have been recognized as one of the Best Startups to Work for in Austin and prioritize a dynamic work environment.

• Architect and run mission-critical operations for Pyth's Price Feeds.
• Ensure feeds operate flawlessly 24/7.
• Lead data forensics to quantify impact and drive solutions that measurably reduce recurrence.

Pyth provides real-time, distributed market data infrastructure. We aim to hire someone who can help us uplift the service management aspects of Pyth's Price Feeds.

• Contribute to the codebase as a technical force multiplier, improving quality and modeling engineering standards.
• Lead and develop a team of backend engineers, fostering technical excellence and continuous growth.
• Architect critical financial systems for payment processing, fraud detection, and compliance with strict regulatory requirements.

Astra builds mission-critical financial infrastructure, powering payment processing, fraud detection, and financial compliance for high-volume businesses. As a small, remote-first team, we value thoughtful collaboration and engineering excellence in a fast-paced environment.