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UK 5w PTO

  • Design, develop, and maintain secure, scalable, and high-quality SDKs and backend services for payment device integrations.
  • Lead architectural and design discussions across backend and mobile platforms while mentoring junior and mid-level engineers.
  • Collaborate closely with Product, QA, and Operations to ensure successful feature delivery and participate in CI/CD pipeline evolution.

C# Java Android IOS SQL

20 jobs similar to Senior Software Engineer

Jobs ranked by similarity.

Bulgaria UK

  • Develop backend services and APIs using C# .NET/.NET Core with scalable, maintainable, and well-tested code.
  • Integrate with third-party APIs such as payment gateways and work in cross-functional scrum teams.
  • Advocate for engineering best practices and contribute to technical choices for web and mobile applications.

CreateFuture is an AI-native consulting partner that builds digital products and services for clients like PayPal, adidas, and NatWest. The company has grown to over 600 employees and is a Great Place to Work-Certified™ firm with multiple Best Workplaces UK awards.

Global

  • Design, develop, and maintain scalable backend services and APIs using C# and .NET 10
  • Build and maintain secure, reliable integrations with third-party systems and external APIs
  • Ensure systems are observability-first through effective logging, metrics, monitoring, and alerting

Smart Working believes that your job should feel right every day. They connect skilled professionals with global teams for full-time, long-term roles and help you discover meaningful work with teams that invest in your success.

UK 5w PTO

  • 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.

US Unlimited PTO

  • Design, develop, and maintain scalable, reliable, and secure software systems that support Humata's healthcare platform
  • Build and enhance backend services, APIs, workflows, and distributed systems that process healthcare data at scale
  • Collaborate with product managers, designers, clinicians, and other engineers to deliver impactful features and improvements

Humata Health creates frictionless prior authorization for providers and payers through proprietary AI and automation technology. They are a physician-led company backed by strategic healthcare investors, focusing on improving patient care and operational efficiency in the healthcare ecosystem.

US

  • Own the design, development, and maintenance of Canary’s mobile SDKs (iOS and/or Android) that power guest and staff experiences for large hotel brands.
  • Create best-in-class developer experiences: clear APIs, robust samples, documentation, and upgrade paths.
  • Build features and UI components for our first-party staff apps with a focus on reliability and performance.

Canary Technologies is changing the game for hotels with software powered by their hospitality-specific AI platform. They are utilized by 20,000+ hoteliers in 100+ countries and trusted by major hotel brands; they are backed by top Silicon Valley investors.

$124,200–$198,700/yr
US

  • Design, build, test, deploy, and maintain scalable, reliable platform services and shared libraries.
  • Contribute to platform and system architecture decisions with a focus on reliability, scalability, and developer experience.
  • Write high-quality, maintainable code and set a strong example of engineering best practices.

Oportun is a mission-driven financial services company that aims to help its members reach their financial goals. They have provided more than $21.3 billion in responsible and affordable credit and saved its members more than $2.5 billion in interest and fees.

Global

  • Deliver high-quality, production-ready code across the .NET stack.
  • Take ownership of complex features or components from design through to delivery.
  • Support and mentor junior engineers through collaboration and leading by example.

Smart Working believes that your job should not only look right on paper but also feel right every day. They connect skilled professionals with outstanding global teams and products for full-time, long-term roles and help discover meaningful work with teams that invest in your success.

US

  • 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.

Mexico

  • Drive the design and implementation of new features, break down complex problems into their bare essentials, translate this complexity into elegant design, and create high-quality, maintainable code.
  • Make a meaningful impact on the lives of our community members, create and maintain test automation to enable continuous integration and development velocity.
  • Design and deliver robust microservices integrations via REST/gRPC APIs and via messaging patterns (events/queues), collaborate and mentor other engineers while providing guidance using code, design, and architecture reviews.

EarnIn is a company building products that deliver real-time financial flexibility for those with the unique needs of living paycheck to paycheck. They're growing fast and are excited to continue bringing world-class talent onboard to help shape the next chapter of our growth journey.

India

  • Design, build, test, deploy, and maintain scalable and reliable platform services and shared libraries.
  • Contribute to platform and system architecture decisions with a focus on reliability, scalability, and developer experience.
  • Mentor and support junior and mid-level engineers through code reviews, pairing, and technical guidance.

Oportun is a mission-driven financial services company that aims to put its members' financial goals within reach. They have provided more than $21.3 billion in responsible and affordable credit and saved its members more than $2.5 billion in interest and fees.

$114,800–$160,000/yr
US Canada 4w PTO

  • Own the technical vision and direction for your domain, ensuring the team builds scalable and maintainable solutions.
  • Diagnose and resolve complex technical bottlenecks to maintain the performance of SaaS applications.
  • Mentor junior and mid-level engineers to foster deeper technical skills and an ownership mindset.

Bloomerang provides a giving platform and support to help nonprofits raise and retain more. They foster a mission-driven culture built on the values of Simplify, Care, and Act and strive to empower nonprofits to achieve maximum impact.

  • Building and managing software product team that performs product development.
  • Partnering with Product Management to shape backlog and quarterly goals.
  • Enforcing design & code reviews, RFCs, and architectural decision records.

Acumatica is a leading innovator in cloud ERP with customers located around the world. They deliver a suite of fully integrated business management applications on a robust and flexible platform. Acumatica's culture is casual and high-energy and they value work/life balance.

Europe 5w PTO

  • Ownership of the full software development life cycle.
  • Work with cloud base architecture focusing on scalability and performance.
  • Address data challenges by implementing robust data engineering practices.

SciLeads is a fast-growing, remote-first SaaS company helping reshape how scientific companies do sales and marketing. They have over 90 people across the UK, Canada, and beyond, and plans to grow to 150+ in the next two years, with a culture of openness, flexibility and innovation.

$215,790–$253,800/yr
UK

  • Drive the secure-by-design mandate, leading the transition from reactive security to proactive architectural invariants.
  • Eliminate systemic risk by identifying fundamental, cross-cutting security problems and driving major engineering improvements to solve them at the root.
  • Partner with product and engineering teams to embed a healthy security culture into Monzo’s product development process.

Monzo is on a mission to build technology that connects the world. They are more than a platform; they are a global infrastructure that millions of people rely on for their daily lives, finances, and communication. Monzo has always adopted a Secure by Design model.

  • Design and develop scalable, maintainable web applications using .NET and Angular, ensuring modern and reusable front-end and back-end solutions.
  • Build and enhance backend services and integrations leveraging Java (preferred), Node.js, or Python to support enterprise-grade applications.
  • Participate in technical design and architecture discussions, contributing to decisions that shape long-term system scalability and performance.

NBCUniversal is one of the world's leading media and entertainment companies that creates world-class content, which we distribute across our portfolio of film, television, and streaming. We own and operate leading entertainment and news brands including NBC, NBC News, Telemundo and Peacock.

Mexico

  • Design and code new features/enhancements and troubleshoot production issues.
  • Create/update features to meet our security, coding, and functionality standards.
  • Develop tools and practices that will increase the efficiency of your team.

Encora is a global company that offers Software and Digital Engineering solutions. Our practices include Cloud Services, Product Engineering & Application Modernization, Data & Analytics, Digital Experience & Design Services, DevSecOps, Cybersecurity, Quality Engineering, AI & LLM Engineering, among others.

US

  • Define the technical foundation and architecture for the Ground Mobile Android app, in partnership with your teammates.
  • Build resilient Kotlin client-side logic with offline-first principles; real-world constraints include: low-connectivity job sites, large capture sets, and intermittent hardware signals.
  • Collaborate with product and design to help translate customer frustrations into elegant technical solutions; write the code that talks to 360-degree cameras and high-accuracy GPS; establish Android CI/CD, testing standards, and release tooling from scratch.

DroneDeploy empowers field teams with robotics and AI. They are the only reality capture platform that combines robotic automation, AI agents, and a truly unified system, DroneDeploy allows critical industries to operate with speed and confidence. They thrive in a mostly remote-first culture rooted in innovation and impact and have been recognized as a Best Place to Work in the SF Bay Area.

US Unlimited PTO 2w maternity

  • Help drive development of the Hirevue Interviewing Product Line, utilizing the best development techniques, patterns, frameworks and libraries.
  • Analyze Product Requirements and write Technical Designs, writing simple, clear, secure, resilient code and unit tests.
  • Collaborate in and/or own the Research and Planning of new Initiatives, resolving complex problems and broadcasting knowledge gained.

Hirevue transforms the way organizations discover, engage, and hire talent with its end-to-end hiring platform. This platform features video interviewing, assessments, and conversational AI and has hosted millions of interactions for over 1200 customers globally.

$100,000–$155,000/yr
US

  • Design, develop, review, deploy and maintain iOS applications with a focus on performance and security.
  • Mentor and lead a team of off-shore iOS and Android developers; experience in both is preferred.
  • Collaborate with analysts, backend engineers, and stakeholders to deliver new features.

CrowdStrike is a global leader in cybersecurity, protecting the people, processes, and technologies that drive modern organizations. Founded in 2011, they have redefined modern security with the world’s most advanced AI-native platform and cultivate a culture that values flexibility and autonomy.

Europe 5w PTO

  • Lead high-performing software engineering teams to shape the future of Appfire’s product ecosystem.
  • Drive both technical excellence and measurable business impact across products within the Acceleration and Core streams.
  • Guide technical strategy, architectural decisions, and prioritize work that maximizes customer and business value.

Appfire empowers teams to break silos and collaborate seamlessly. With over 850 employees across 28 countries, they foster a remote-first environment where everyone is respected and invested in professionally and personally.