Senior Backend Engineer
SARDINE
Backend-Focused Senior Software Engineer
Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine's platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.
As a backend-focused Senior Software Engineer, you will play a pivotal role in designing, constructing, and maintaining APIs, services, and systems across our engineering team. This multifaceted position involves developing new features on a large scale, refining internal tooling and processes, contributing to product and technical roadmaps, and assuming diverse responsibilities within the organization. The ideal candidate for the backend role will have a proven track record in building highly available APIs, with additional proficiency in data pipelines and the relevant domain.
What you'll be doing:
- Design, create, and maintain robust, efficient, and reliable backend services to meet our platform's evolving needs.
- Collaborate closely with business stakeholders to architect and implement new services from inception to delivery.
- Contribute to developing new features and capabilities that deliver substantial value to our customers.
- Work with various engineering and product teams to synchronize efforts and deliver cutting-edge solutions.
- Craft and maintain user-facing technical documentation, enhancing user understanding and facilitating seamless adoption of our services.
- Play a pivotal role in shaping our company's engineering culture, ensuring the maintenance of high engineering standards across the organization.
What you'll need:
- 7+ years of proven experience as a Software Engineer specializing in web backend development.
- Proficiency in Golang is a significant advantage.
- Additional experience in data engineering is highly desirable.
- A track record of successfully delivering high-quality production services and systems.
- Customer-centric approach with a strong emphasis on empathy towards users.
- Relevant industry experience, particularly in banking or fintech, and domain knowledge in fraud prevention or compliance.
- Proficient in English - from casual chats to formal reports.
Technologies we use:
- TypeScript (React + node)
- Golang
- Ruby
- Bigtable
- Postgres / PostgreSQL
- GCP dataflow (apache beam)
- BigQuery
- Python
- Java
- Terraform
Benefits we offer:
- Generous compensation in cash and equity
- Early exercise for all options, including pre-vested
- Work from anywhere: Remote-first Culture
- Flexible paid time off and Year-end break
- Health insurance, dental, and vision coverage for employees and dependents - US and Canada specific
- 4% matching in 401k / RRSP - US and Canada specific
- MacBook Pro delivered to your door
- One-time stipend to set up a home office — desk, chair, screen, etc.
- Monthly meal stipend
- Monthly social meet-up stipend
- Annual health and wellness stipend
- Annual Learning stipend
Join a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.
- ...media, powered by fast, reliable, and deeply technical market infrastructure.About the rolePolymarket is looking for a senior/staff backend engineer to own the systems that connect our exchange to the outside world — market data distribution, order routing, and the high...Senior
$165 per hour
...DescriptionIf you say you have an idea and can covert that into a something beautiful, then you are the one we are looking for.As our Sr. Backend Engineer, you will be:You will develop efficient web services and APIsYou will participate in daily code deploys while working on...Senior- ...and we need your help adding fuel to the fire.About the RolePolymarket is launching perpetual futures and we're looking for Senior Backend Engineers to own the core systems that make it run. This is backend exchange engineering in the truest sense: low-latency order...Senior
$150k - $300k
$150,000-$300,000 per annum New York, United States Permanent Senior Backend Engineer - New York My client is a well funded early stage startup building a high scale social platform from the ground up. They are focused on building persistent, high performance...SeniorPermanent employment- ...global media, powered by fast, reliable, and deeply technical market infrastructure.About the rolePolymarket is looking for a senior backend engineer to build and scale the payments infrastructure that powers deposits, withdrawals, and money movement across the platform....Senior
- ...high concurrency and performance bottlenecks in the business process.- Maintain the quality and stability of the system, and guide engineers at all levels to continuously optimize various technical indicators of the system.Minimum Qualifications:- BS/MS Degree in...SeniorWorldwide
- ...Our systems screen hundreds of millions of listings using rule engines, ML models, and LLM-based review.Responsibilities:- Own solution... ...field.- 5+ years of experience building highly scalable backend services and distributed systems.- Demonstrated technical leadership...Senior
- ...market infrastructure.About The RolePolymarket is looking for a backend engineer to build the systems that power how markets are created,... ...time.You’ll be a core individual contributor working with other senior engineers to design, implement, and operate the systems that...Senior
- ...core of what Polymarket does. Every trade, every order, every market resolution runs through the systems this team owns. As a Senior Backend Engineer on the Services team, you'll be working directly on that infrastructure, building and scaling the backend that processes...Senior
- ...global media, powered by fast, reliable, and deeply technical market infrastructure.About the rolePolymarket is looking for a backend/product engineer to own the core domain APIs and data models that power our consumer-facing product.You’ll work at the intersection of...Senior
- ...CVS Health is seeking a Senior Software Engineer to own complex backend workstreams in a healthcare context. You will design and build scalable microservices and APIs, mentor engineers, and drive technical decisions that impact patient care delivery. The role emphasizes...Senior
- PLEASE CLICK HERE TO SEE *ALL* OF OUR JOB OPENINGS!Senior Backend EngineerSeeking a Senior Backend Engineer to architect and operate their backend platform that delivers scalable, high-performance insights for Fortune 500 clients. You'll build the core systems that power...SeniorCasual work
- ...Humana is seeking a Senior Software Engineer in the United States to design, implement, and operate stateful services that power real-time decisioning and personalization platforms. You will build deterministic state machines, transactional state stores, and idempotent...Senior
- ...Vanta is seeking a Senior Software Engineer for the Test Core team. You will drive core backend systems to support automated security checks, scale DataDog observability, and mentor peers. You’ll shape technical direction and own end-to-end execution of critical features...Senior
- ...Polymarket is seeking a Senior Backend Engineer to manage core systems that support their exchange. This role involves optimizing low-latency order matching and ensuring system reliability under load. The ideal candidate will have experience in building exchange systems...Senior
- ...Remote Backend Senior EngineerApex Systems is looking for remote backend senior engineers. Experience needed:6+ years as a backend developer in enterprise environmentSpringboot or strong with restful web services in generalSQLMicro services knowledge in generalAgile experience...SeniorRemote work
- ...janitorAI in San Francisco is seeking an engineer to build AI interactive entertainment. The role involves improving product features deeply wired into our AI stack and enhancing performance, reliability, and user experience. The ideal candidate will tackle complex problems...Senior
$160k - $200k
...States / New York / Chicago,IL / San FranciscoPredictions - Engineering /Full-time /HybridAbout UsOG.com is a fast-growing, CFTC-regulated... ...2022.ABOUT THE ROLEWe are seeking a highly skilled Mid-to-Senior Backend Engineer to spearhead the growth of our 24/7 high-throughput...SeniorFull timeContract workWorldwide- ...Pragmatike is seeking a Senior Full Stack Engineer with a strong backend focus to join a YC-backed AI technology start-up. You will own complex systems from architecture through production, partnering with founders and product teams to build the platform powering next...Senior
- ...Bachelors or higher degree in Computer Science or related technical discipline.- 5 or more years experience managing highly scalable backend services and systems using at least one of Java/Golang/Python/C++.- Strong software programming capabilities, exhibits good code...Senior
- ...ALTEN Polska poszukuje Backend / Fullstack Developera z doświadczeniem w JVM i React, do około 6-miesięcznego projektu z możliwością przedłużenia. Kandydat dołączy do zespołu pracującego nad migracją z Scala/Akka na Kotlin i rozwijaniem istniejącego produktu w Kotlinie...Senior
$112.13k - $186.88k
...team, the purpose of this role is to build and maintain services related to grading and feedback functionality. The Senior Software Engineer - Backend Services will be responsible for designing, implementing, and maintaining scalable, high-performance backend systems...SeniorRemote workHome office$161k - $194k
...factory, Tapestry brings together experts in energy, AI, software, engineering, and product to build tools that help the electricity... ...or equivalent practical experience.5+ years of experience in backend programming languages such as Python, Go, Java.3+ years of extensive...SeniorFull timeWork at officeLocal areaFlexible hours$166.6k - $208.3k
...through the skies. It embodies the elegance of simplicity in engineering, transforming the demanding task of controlling an aircraft... ...product engineering group is growing and we’re looking to hire senior backend engineers. We’re a team of pragmatic, product-minded...Senior$165k - $230k
...NexHealth in San Francisco is seeking a Software Engineer to tackle challenging problems in healthcare integration. You will develop real-time API solutions to synchronize health records, driving significant growth and improvements in systems. The ideal candidate has...Senior- ...United States Digital Space LLC is seeking a Senior Backend Engineer for Platform Insights to design and evolve core backend systems in Go, powering the Data Insights Platform and Siphon. You will shape architecture, ensure reliability, and drive deployment across SaaS...SeniorRemote work
- ...MongoDB's Atlas team is a diverse group of engineers building and operating MongoDB Atlas, our database-as-a-service, which enables... ...to balance collaboration with focused work. We are seeking a senior backend engineer focused on identity and access management who can design...Senior
- ...Grafana Labs, the company behind the open observability cloud, is remote-first and globally distributed. The Senior Backend Engineer - Databases role focuses on Loki, Mimir, Tempo, and Pyroscope, building multi-tenant distributed systems in Go and running on Kubernetes...SeniorRemote work
$200k - $240k
...A leading AI company in San Francisco is seeking a Backend Tech Lead to architect and scale their core API infrastructure. This position requires 5+ years of backend engineering experience and expertise in Node.js and large-scale data systems. You'll collaborate with...Senior- ...TaxGPT is seeking a Senior Backend Engineer with strong Django expertise to join our team. The role involves designing and scaling core backend systems while collaborating closely with product and engineering teams. Ideal candidates will have over 7 years of experience...SeniorRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Backend Engineer. Be the first to apply!
- back-end developer United States
- lead backend developer United States
- remote back end developer United States
- backend software engineer United States
- entry level back-end developer United States
- senior backend developer United States
- backend .net developer United States
- c# backend developer United States
- java developer backend United States
- backend python developer United States

