Senior Full-Stack Engineer: Modernize Legacy APIs & Cloud
ECS
Everforth ECS is seeking a highly skilled Senior Full Stack Engineer in the United States. The role involves designing, building, and maintaining large scale APIs for enterprise applications in support of the Department of Homeland Security. Applicants must possess significant experience with Java, React, and API development, including a strong background in legacy system modernization. The ideal candidate should have excellent communication skills and the ability to work collaboratively in a diverse team, ensuring optimal user experience and successful project outcomes. #J-18808-Ljbffr ECS
- ...company in New York is seeking a Senior Full Stack Engineer to build core backend services and developer-facing APIs. In this role, you will... ...development, particularly with modern frontend frameworks and... ...services, alongside strong cloud infrastructure knowledge. The...CloudSeniorFlexible hours
- ...distribution company in the United States seeks a Senior Software Engineer to design and maintain its web applications. The ideal candidate will have over 7 years of full-stack development experience, including RESTful API development and expertise in AWS services. This...CloudSeniorRemote job
- ...lean, high-performing engineering team of seven building cloud-native software on a modern TypeScript stack. They ship fast, own... .... We’re hiring a senior full-stack engineer to accelerate... ...(or GraphQL) APIs SQL / Relational Databases... ...stack with minimal legacy baggage AI-forward...CloudSeniorContract workRemote workFlexible hours
$103.88k - $242.4k
# Senior Legacy (Mainframe) Modernization LeadNashville, Irving, Bridgewater, New... ...typically involving cloud migration,... ...iseries technology stack including target architecture... ...Business, Computer Engineering, or related field (advanced... ...to all regular, full-time employees.** In...CloudSeniorPermanent employmentFull timeLocal area- ...Intelligence as an Associate Full Stack Engineer supporting... ...services to API integration and data... ...data scientists, and senior engineers, you... ...or JavaScript, and modern front-end development... ....Exposure to cloud platforms such as... ...Life, our 180-year legacy of purpose and integrity...CloudSeniorInternshipLocal area
- United States Digital Space LLC is seeking a Senior Level Full Stack Engineer to enhance modernized systems within Workplace Solutions. This role will focus on integrating on-prem and cloud technology to support Fortune 500 clients and drive innovation in a $500 million...CloudSeniorRemote job
$500 per month
...our institutional-grade APIs. This includes broker-... ...group of experienced engineers, traders, and... .... Your Role: As a Senior Full-Stack Engineer, you will be... ...Proficient in at least one modern systems programming language... ...Experience with major cloud platforms (we...CloudSeniorRemote workHome office- Senior Full Stack Software Engineer (.NET & DevOps) Direct message the job poster... ...scalable, cloud‑native solutions across... ...and integrate REST APIs, OpenAPI specifications... ...NET Core / .NET 6+ Modern front‑end framework... ...Salesforce, or similar) Legacy modernisation work (...CloudSeniorFull timeRemote work
- ...needs. The role As a senior full stack engineer, you’ll build core backend services, developer-facing APIs, and UIs that power Predicate... ...Strong frontend skills with modern frameworks (e.g. "React", "Next... ...~ Deep understanding of cloud infrastructure, particularly...CloudSeniorContract work
- ...in Azure to develop applications and build APIs. The role includes responsibilities for enterprise integration, modernization of legacy systems, and participating in Agile... ...offers opportunities to work on scalable cloud solutions. #J-18808-Ljbffr Khaitan Infotech...CloudSenior
$120k - $145k
...become available. Senior Full Stack Software Engineer (Technical Lead) Job... ...digital services. Using modern, agile methods, our... ...-making, modernize legacy systems, and build... ...solutions within a cloud-native microservice... ...and consume RESTful APIs using versioned OpenAPI...CloudSeniorContract workTemporary workWork at officeRemote workFlexible hours- ...Insight Global is looking for Full Stack Software Engineers to join a dedicated team... ...Build and consume RESTful APIs and JSON-based data contracts... ...; familiarity with modern JavaScript/TypeScript ecosystems... ...team ~ Exposure to Azure cloud platforms and containerized...CloudSeniorRemote work
$156k - $185k
...Senior Full Stack Software Engineer - Remote in US Knock is redefining the home buying and... ...maintain backend services, APIs, and data pipelines that power... ...‑level Node.js code using modern frameworks like Fastify or... ..., and ongoing maintenance. Cloud infrastructure experience—...CloudSeniorFull timeLocal areaRemote workFlexible hours- ...Technologies LLC is looking for a Sr. Full Stack Developer to design and... ..., Spring Boot, and integrating APIs and microservices. The ideal candidate... ...have a strong background in modern web technologies and a passion for software engineering best practices, we invite you...SeniorRemote job
- ...BairesDev is seeking a Rails Developer to lead full-stack engineering efforts, focusing on Rails and modern frontend frameworks. You will design scalable web applications, optimize APIs, and manage databases while working remotely. The ideal candidate has over 4 years...CloudRemote workWorldwideFlexible hours
- ...Senior Full-Stack Software Engineer (Next.js + Supabase + AI-Native) United States or Canada... ...Scale: Design and optimize API contracts, edge endpoints,... ...security, Next.js, and modern Postgres/Supabase practices... ...quickly with stakeholders. Cloud & Infrastructure: Experience...CloudSeniorRemote workWork from homeFlexible hours
- ...We’re building modern systems to replace the legacy software and armies... ...-based team of engineers, designers, and... ...) Type Full-time ⸻ About the... ...looking for a Senior Full-Stack Engineer to join... ...privacy-aware APIs and microservices... ...frontend/backend/cloud) Strong proficiency...CloudSeniorFull timeRemote work
$120k - $160k
A leading technology company is seeking a Senior Software Engineer, Full Stack, to develop and maintain modern web applications for the US electric grid. The role requires... ...including proficiency in TypeScript, Python, and API design. Candidates need a Bachelor's degree in...SeniorRemote job- viaPeople is seeking a driven Senior Full Stack Engineer to lead end-to-end feature development on their cloud platform. The role involves building modern front-end applications with React and robust Node.js APIs, integrating AWS services. You will have a significant impact...CloudSeniorRemote jobFull time
- ...step. We’re looking for a Senior Full Stack Engineer to help us build Vendia’s MCP... ...web applications, SDKs, and APIs that serve as the critical bridge... ...world of AI governance + cloud data platforms. Ready to... ...apps and backend APIs, using modern frameworks and automation/testing...CloudSeniorRemote workHome office
- ...We're seeking an exceptional Senior Full-stack Engineer to take part in the ground-... ...leadership. You'll work with modern frontend and backend... ...Events, and BroadcastChannel API Build performant UI components... ...quality checks Familiarity with cloud infrastructure, CI/CD...CloudSeniorImmediate startRemote workWorldwideFlexible hours
- ...is seeking an experienced Java Full Stack Developer for a 12+ month... ...using Java, Spring Boot, and modern frontend frameworks like React... ...Agile environment, building REST APIs, optimizing database performance... ...microservices, and knowledge of cloud platforms like AWS or GCP. #J...CloudSeniorContract work
£3,000 per month
...centred product and are looking for a Senior Fullstack Engineer with a backend focus to join our... ...with the suite of services offered by modern cloud providers such as AWS and understand... ...details of both user experience and API design. You have actively worked on a...CloudSeniorWork experience placementRemote workHome officeFlexible hours- ...contribute to the modernization of an exposure-... ...transitioning from a legacy WPF .NET... ...application to a scalable, cloud‑ready... ...be completely re‑engineered, offering a unique... ...About the role As a Senior .NET Full-stack Engineer, you will... ...maintaining, and running APIs. In‑depth...CloudSeniorWork experience placementRemote work
$250k
...finance. About the Role As a Senior Full-Stack Engineer at Fiska, you'll be at the... ...actionable financial insights API Development: Design, build,... ...using React 18+, TypeScript, modern state management solutions,... ...production experience with cloud platforms (AWS, GCP, or Azure...CloudSeniorRemote workHome officeFlexible hours$140k - $200k
...the Role We are seeking a Senior Full Stack Engineer / Technical Architect with... ...implementations Accelerate UI modernization and 3Forge adoption The... ...migration methodology for legacy apps Full Stack Engineering... ...telemetry solutions Support cloud‑native and microservices‑...CloudSeniorTemporary workRemote workWorldwide- ...impact.Role OverviewAs a Full Stack Developer on the... ...building and integrating modern, cloud-native applications. This... ..., scalable APIs, and event-driven systems... ...Spring).DevOps & Cloud Engineering: Implement CI/CD pipelines... ...York Life, our 180-year legacy of purpose and...CloudSeniorLocal area
- Senior Application Architect - The Senior... ...the design and modernization of mission‑... ...design, and mentors engineering teams to deliver... ...platforms across legacy, hybrid, and cloud environments.... ...sequencing, and API specifications.... ...challenges before full‑scale delivery....CloudSeniorLocal areaRelocationFlexible hours
- .NET Fullstack Senior Developer - HYBRID Date:... ...alternate datacenters/cloud regions. Coordinate... ...(examples) Migrate legacy interfaces to modern APIs (e.g., SOAP > REST,... ...Core Development - full stack development focused... ...Cloud Platform (App Engine, Cloud Functions, Firestore...CloudSeniorTemporary work
- Capgemini is looking for a Senior Legacy Modernization Lead based in New York. In this role, you will design and oversee the modernization of legacy... ...needs. You should have extensive experience leading cloud-related projects and a comprehensive understanding of various...CloudSenior
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