Senior Backend Engineer, Client API & Integrations
EnergyHub
A leading clean energy company is seeking a Senior Software Engineer in the United States to develop and maintain a client-facing REST API. This role involves building backend logic and ensuring security protocols are followed. Candidates should have over 5 years of software engineering experience, particularly with the Java/Spring ecosystem and RESTful APIs. Join a team focused on innovative energy solutions and make a significant impact on the industrys future. Remote work options are available.
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$85k - $155k
...Senior Backend Engineer - Client integrations (Europe) Europe (Full Remote) About Kalepa: Commercial insurance is a trillion-dollar industry run out... ...Integrations team, you will work on the external-facing APIs that power our customers’ core workflows. Your day-to-...SeniorFor contractorsWork at officeRemote work- ...providers by offering a unified API to access all on-chain liquidity... ...down of the job Join LI.FI as a Backend Developer with a dedicated focus on integrating Hyperliquid functionalities into... ...the Expansion PM and other backend engineers to improve integrations, routing,...SeniorFor contractorsWork at officeRemote workFlexible hours
$125k - $200k
...Senior Software Engineer, (API’s/integrations) US Based We’re hiring a Senior Software Engineer- (API’s/integrations... ...automates workflows, enhances client communication, and integrates across... ...eliminate operational friction Tech stack Backend engineering: Elixir Frontend:...SeniorImmediate start- ...digital healthcare firm in the United States is seeking a Senior Full Stack Engineer to design and build robust backend services while also collaborating on frontend development. The role includes evolving core APIs, improving service reliability, and working with modern...Senior
- ...A healthcare technology company is seeking a Senior Full Stack Engineer to design and build backend services while also providing frontend support when necessary... ...teams. This role involves the ownership of platform APIs, performance improvement, and contributing to the...Senior
- ...A leading technology firm is seeking a Senior Backend Engineer to design, build, and maintain scalable backend systems. The role involves high-performance API development and database architecture. Candidates should have a passion for software engineering and a proven...SeniorFlexible hours
- ...BitGo is seeking a Senior Backend Engineer to join our Trade Team, focusing on building robust financial APIs. This role involves working closely with teams across time zones and mentoring peers in the engineering department. The ideal candidate should have a Bachelor...Senior
- ...sports technology company in the United States is seeking a Senior Software Engineer to develop backend systems for high school sports web applications. This... ...of experience and will be responsible for improving APIs and backend architecture, ensuring reliability and performance...Senior
- ...end developer to work onsite in New York City. The role involves designing and building robust APIs for financial services, mentoring peers, and collaborating with engineering teams. Candidates should have 5+ years of relevant experience and strong skills in TypeScript/...Senior
$120k - $140k
...Senior/Lead Backend Engineer - FinTech & Crypto Innovation Location: Remote -... ...banking functions, blockchain integrations, and serve data to our... ...foundation of our platform. API Development: Develop,... ...data may be shared only with clients and trusted partners where...SeniorWork at officeRemote work- ...EPAM Systems, Inc. is seeking a Senior Python Developer in the United States. In this role, you will create scalable backend services using FastAPI and REST API while participating in SCRUM ceremonies. The ideal candidate will have at least 3 years of professional Python...Senior
$115k - $130k
...InsCipher seeks a Senior PHP/Symfony Developer to join its Core Team in the United States. This role requires expertise in PHP 8.x and... ...include troubleshooting complex system issues, building RESTful APIs, and optimizing database performance. The position offers a competitive...Senior- ...ideal candidate has at least 5-7 years of experience, focusing on Python and Django to design, develop, and maintain robust backend services and APIs. This role offers competitive compensation ranging from $111,300 to $174,900, alongside comprehensive rewards including...Senior
$80 - $105 per hour
...Framework Ventures is looking for a Senior Python Developer to create scalable APIs and microservices that serve thousands to millions of users. The role... ...5 years of experience in building performance-driven backends and be familiar with tools like Docker and AWS. Compensation...SeniorHourly payRelocation- ...A geospatial intelligence company in the United States is seeking a Senior Backend Engineer to develop robust backend solutions and scale APIs for advanced risk analysis. The role involves architecting cloud-native software and mentoring team members. Candidates should...Senior
$154k - $220k
...the United States seeks an experienced software engineer proficient in Go to design and implement scalable backend services. The ideal candidate will have over 8 years... ...large-scale distributed systems and RESTful APIs. Responsibilities include mentoring junior engineers...Senior- ...Speechify is looking for a Software Engineer, Platform to develop and maintain robust backend APIs that support various services, including payments and subscriptions. The ideal candidate will have experience with GCP and a strong understanding of cloud technologies....SeniorRemote work
- ...provider in the United States seeks a Senior System Analyst to enhance payment integrations. You will analyse and optimise... ...ensure clear requirements for engineering. The ideal candidate has over three... ...roles, strong understanding of APIs, and knowledge of payment flows....Senior
- An established industry player is seeking an experienced Integration Architect with over 12 years in the field. This role focuses on leveraging... ...understanding of integration architecture concepts, including API-Led and RESTful approaches. Join a forward-thinking company...Senior
- ...BitGo is hiring a Backend Engineer E3 for their Engineering team in the United States. The role requires designing resilient APIs and services and ensuring scalability from deployment to integration. Candidates should have at least 6 years of back-end development experience...Monday to Friday
- ...Reddit, Inc. is seeking an experienced engineer to work on the foundational platform for GraphQL infrastructure. This fully remote role... ...engineers. The ideal candidate will have over 5 years of experience in backend systems, proficiency in Go, and a solid understanding of cloud...SeniorRemote work
- ...orchestration, gateway optimization, and API-driven architecture . Experience with... .... About the Role We are seeking a senior backend engineer to support a payment modernization initiative... ...directly under the CTO to build and integrate payment orchestration systems and...SeniorFull timeContract workRemote workFlexible hours
- ...develop and maintain web applications, build RESTful APIs, and collaborate on scalable backend systems. Strong Python skills and experience with web... ...application reliability and performance, along with continuous integration and deployment. Excellent problem-solving and...
$180k - $220k
...side development, primarily using TypeScript and Node.js. Responsibilities include building robust APIs for their Stablecoin-as-a-Service platform and maintaining integration with blockchain networks. The role offers a salary range of $180,000 to $220,000 annually,...Senior- ...Senior Backend Engineer About the Role We are looking for a Senior Backend Engineer who is passionate... .... The systems you build will integrate geospatial and temporal data , enforce... ...and build FastAPI-based services and APIs with a focus on performance, clarity,...Senior
- ...every day. We’re a team that builds with integrity, agility, and heart, and we’re looking... ...platform, and we’re looking for a Senior Backend Engineer who wants real ownership, real scale,... ...volumes of financial transactions Build API-first services with strong contracts,...SeniorContract work
$170k - $200k
...Location Type Remote Department Engineering Compensation US $170k–200k |... ...of these is its own independent integration. We need a Senior Backend Engineer focused on AI to bring this... ...Evaluate and integrate new models and APIs as they become available Raise...SeniorFull timeRemote workHome officeVisa sponsorshipWork visa- ...global payments platform — API-first, modeled after... ...— and hiring our first engineer. The founder built the... ..., CI/CD. Now we need a senior engineer to own production... ...harden AI-generated backend code daily — mandatory... ...reconciliation, ledger integrity Own secrets and...SeniorLive in
- ...We are looking for a Senior Backend Engineer to join our Legal Tech engineering team and help build... ...Strong proficiency with Python, REST APIs and Cloud (e.g. AWS, GCP) Strong experience... ...large scale SaaS solutions Ability to integrate AI/LLM features into backend services...SeniorRemote work
- ...The Senior Backend Engineer plays a critical role in designing and scaling the core systems that power... .../Java and Spring Boot, create robust APIs (REST and gRPC), and build event‑... ..., or similar). Experience with AI/LLM integrations, vector databases, or RAG systems. Familiarity...SeniorContract workFor contractorsRemote workFlexible hours
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