Senior Backend Engineer: Java, API & Scalable Payments
Jobtailor
Jobtailor in Denver, CO seeks an experienced backend engineer focused on Java to design and deploy scalable services for Visa-like payment platforms. You will develop APIs, integrate systems, and collaborate with product, test, DevOps, and Agile/Scrum teams to deliver secure, reusable software.
We expect strong back-end skills, familiarity with Kubernetes and Docker, and a track record of building modern web applications with quality and scalability for B2B and government-related solutions.
#J-18808-Ljbffr- ...A leading IT Solutions Provider is seeking an experienced API Developer to design, develop, and maintain advanced RESTful APIs. The ideal candidate will have over 5 years of backend development experience and strong communication skills. Responsibilities include optimizing...Senior
- ...Full-Time Preferred) Domain: Payments / Fintech / eCommerce... ..., gateway optimization, and API-driven architecture . Experience... ...About the Role We are seeking a senior backend engineer to support a payment... ...Strong in one or more: Node.js Java Python Go Extensive REST API...SeniorFull timeContract workRemote workFlexible hours
$119.77k - $140.9k
...system development for the Hogan API application, using ISTIO... ...Gateway, Kubernetes, Spring Boot, Java, Postgres, Z-connect, Datadog... ...testing pyramid.Approaches engineering work with a security lens and... ...decisions. Also considers scalability, reliability and performance...SeniorFull timeWork at officeLocal areaRemote workFlexible hours3 days per week$75k - $137.5k
.... As a Back-End Software Engineer within PNC's Retail Technology... ..., develop, and maintain scalable backend services using modern Java and Spring technologies.... ..., develop RESTful APIs, and deploy cloud‑native... ...incentive eligible with the payment based upon company, business...SuggestedFull timeTemporary workPart timeWork experience placementWork at office$94k - $120k
...need you to help us continue to change with it.The Senior Software Engineer utilizes web and cloud technologies, APIs, and third party software development frameworks... ...education/experienceThree years of Core Java experienceStrong knowledge of coding platforms/frameworks...SeniorFull timeContract workWork at officeLocal areaRemote workWorldwideWork visaRelocation packageFlexible hours3 days per week- ...Polymarket is looking for a backend engineer to help build and... ...working with other senior engineers to design, implement... ...Design and implement scalable, low-latency backend... ...languages (Go, Rust, Java). Optimize for... ...Build and operate robust APIs, data pipelines, and event...Senior
$130k - $160k
...Senior Backend Software EngineerLocation: Gaithersburg, Maryland... ...to build and enhance scalable enterprise solutions... ...mission operations. Engineers on this effort will work... ..., developing RESTful APIs, integrating data... ...backend services using Java or Python • REST API Development...SeniorFull timeRemote work$112.71k - $183.14k
...Summary:We are looking for a Senior Software Engineer to build and support scalable, cloud-native... ...candidate has deep expertise in Java, Spring Boot,... ...reliable, and high-performing backend solutions at scale. You... ...backend services and REST APIs using Java and Spring Boot...SeniorFull timePart timeWorldwideFlexible hours- ...at Trellis. The Opportunity As a Senior Software Engineer on the Conversational AI team at... ...-level product initiatives into scalable, well-tested technical solutions... ...Proven experience working in backend systems, designing RESTful APIs and codifying business logic on...SeniorRemote workFlexible hours
- ...IgniteAction is seeking an experienced API Developer to join our team and... ..., and operations of multi-terabytes scalable enterprise end-to-end backend database systems. Manage version... ...+ years of experience as a software engineer, backend developer ~ Strong experience...SeniorFull timeFlexible hours
- ...Fivetran, Inc. in Denver, CO seeks a senior software engineer to own the metadata layer of the dbt platform. You... ...deliver end-to-end features across discovery API, catalog, lineage, and run history, building scalable backend services and reusable components. You will write...Senior
$85k - $135k
...degree in Computer Science, Engineering, or another related... ...Node.js middleware and API integration layers.... ...turning business needs into scalable and secure solutions.... ...secure middleware and backend-for-frontend services that... ...teammates belong. This Senior Back-End & Integration...SeniorFull time- ...U.S. Bank is seeking a Senior Technology Architect to... ...initiatives across enterprise payments and digital platforms.... ...with business and engineering teams to translate requirements into scalable solutions. The role emphasizes... ...cloud modernization, API-first design, and high...Senior
- ...Kharon is seeking a Senior Software Engineer in Denver to design, develop, and maintain backend services powering our client-facing application. You will work across Java/Kotlin and other JVM languages, contribute to API design, and own code quality through testing and...Senior
$163k - $246.5k
...Backend EngineerSemgrep, the leader in code security for builders, empowers invention without... ..., and Dropbox.About the RoleAs a Backend Engineer, you'll work on our backend and... ...collaborate with other engineers to develop the APIs, data models and services that power Semgrep...SeniorCurrently hiringLocal areaRemote workWeekend work3 days per week- A transformative AI startup is looking for a Senior Software Engineer to join their remote team. This role focuses on backend engineering, enhancing scalability, performance, and reliability in complex systems. Candidates should have senior-level experience in building...SeniorRemote work
- ...GROUP, LLC is seeking a Director of Engineering in Denver to drive architecture, project... ...across teams. The role emphasizes API design and backend systems, with a strong focus on JSON... ...translate business requirements into scalable technical solutions using existing technologies...
$90k - $150k
...ourclient in the high-growth Web3 and DeFi sector who is seeking a Senior Backend Engineer to join its core Platform team. This organization builds... ...with product and platform engineers to deliver reliable, scalable solutions. This role is ideal for an engineer who values...SeniorFull timeRemote workRelocation packageFlexible hours- ...systems. We provide APIs and automation tools... ...We're looking for a Senior Fullstack Engineer who is primarily frontend... ...features across our payments dashboard, internal tooling... ...first, with enough backend range to move fast... ..., performance, and scalability as our platform grows...SeniorRemote workFlexible hours
$86.25k - $158.13k
...success. As a Software Engineer Lead within PNC's... ...application features across backend services (Java 21) and frontend... ...architecture decisions spanning APIs, UI state management,... ..., security, and scalability.Establish and enforce... ...eligible with the payment based upon company,...Full timeContract workTemporary workPart timeWork experience placementWork at office- ...Senior Java Full Stack DeveloperLocation - Denver, CO Onsite FTEWe are seeking an experienced... ..., Kafka, and Generative AI to build scalable, cloud-native enterprise applications.Key... ...Java, Spring Boot, Microservices, REST APIs, and modern front-end technologies.Build...Senior
$86.8k - $165.2k
...of experience and renowned engineering expertise to meet the needs... ...safer, more secure world.In the Senior Java Software Engineering role,... ...performance, reliability, and scalability.Participate in software... ...collective-bargaining agreement. Payments under these annual programs...SeniorTemporary workWork experience placementWork at officeImmediate startRemote workRelocation packageFlexible hours$114k - $152k
...Senior Java Software EngineerRemote – US-Based OnlyNo visa sponsorship |... ...seeking a Senior Java Software Engineer to join a growing engineering team building scalable cloud-native applications and modernizing... ..., Angular, TypeScript, REST APIs, Microservices, Event-Driven...SeniorRemote workVisa sponsorship- ...innovative IT consulting firm is seeking a dynamic Polyglot Software Engineer to join their fully remote team. In this exciting role, you will... ...with talented teams, you will build microservices, develop APIs, and leverage cloud infrastructure to ensure seamless deployment...SeniorRemote work
$87.1k - $157.45k
...building your skills in backend development,... ...and mission‑driven engineering, and you’re ready... ...with visibility at senior levels, you’ll... ..., develop RESTful APIs, support data‑driven... ..., API design, and scalable systemsChallenging... ...components using Java or PythonREST API...Full time$144k - $273k
...Enterprise is seeking a talented Software Engineer to join the Private Cloud Engineering... ...in Colorado. You will be responsible for backend development, collaborating with various teams... .... Ideal candidates have expertise in Java, Groovy, Ruby, or Python, possess strong...Senior$153.94k - $213k
...About Engine At Engine, we're transforming business travel into something personalized... ...Places to Work. Your Mission As Senior Product Manager for Payments, you'll own the strategy, roadmap,... ...products. You've owned complex backend systems end to end and shipped products...SeniorRemote work- ...Senior Full Stack Software Engineer (Java/Angular) Join to apply for the Senior Full Stack Software Engineer (Java/Angular) role at Worldpay. Are... ...chapter? Make your mark at one of the biggest names in payments. We’re looking for a Senior Full Stack Engineer to...SeniorFull timeWorldwideNight shift
- ...API DeveloperLOCATION Aurora, CO 80014CLEARANCE TS/SCI Full... ...functional teams to create scalable, secure, and high-... ...team.SIMILAR CAREER TITLES Backend Developer, API Engineer, Web Services Developer, Integration... ...!!!Referral bonus program with recurring annual payments...Temporary workFor contractorsImmediate start
$139.6k - $200k
...our mission to transform our nation's healthcare system as a Senior Backend Software Developer. In this role you will assist in leading projects... ...combine technical leadership with hands-on coding to build scalable, high-impact healthcare technology. You will:...SeniorLocal areaFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Backend Engineer: Java, API & Scalable Payments. Be the first to apply!
- back-end developer Denver, CO
- backend software engineer Denver, CO
- java software engineer Denver, CO
- java spring developer Denver, CO
- java web developer Denver, CO
- java microservice developer Denver, CO
- java developer remote part time Denver, CO
- remote junior java developer Denver, CO
- java developer full time Denver, CO
- java developer Denver, CO



