Rest API Jobs - Remote & On-site

Rest API jobs at vetted startups and product companies on Alion. Search backend, API design and integration roles; many positions support remote work and salary ranges are shown where available. Listings updated daily. Browse and apply today.

AI/ML
Data Science
Backend
Frontend
Mobile
DevOps
Web3
Games
Hardware
Robotics
Security
QA
Executive
Networking
Product
Design
Analytics
Support
Enterprise Apps
Quantum

Treeswift

treeswift.com
Treeswift is a University of Pennsylvania spin-out that uses autonomous drones and lidar to inventory forests tree by tree. Founded in 2020, it produces measurements of species, diameter and biomass that used to require slow manual cruising. Timber companies and carbon project developers use the data for harvest planning and verification.
treeswift.com • HQ: Philadelphia, United States • Machine Learning • Est. 2020
HQ: Philadelphia, United States • Machine Learning • Est. 2020
Open 145 daysTop 25% pay 5 months ago

Backend Engineer

$160k – $215k per year • Equity • Senior • 7+ years expIn office (New York, United States) • Full-Time • Senior
Python
JavaScript
Python
Django
FastAPI
Databases
Oracle
PostGIS
PostgreSQL
Frontend
React.js
DevOps
Amazon EKS
AWS
CI/CD
Docker
Kubernetes
OpenTofu
Rest API
Terraform
Cybersecurity
Keycloak
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William Blair

williamblair.com
William Blair is the premier global partnership with expertise in investment banking, investment management, and private wealth management. We provide advisory services, strategies, and solutions to meet our clients’ evolving needs.
williamblair.com • Atlanta • Chicago • Madrid • New York • Amsterdam • Professional Services • Asset Management • Financial Services
Atlanta • Chicago • Madrid • New York • Amsterdam • Professional Services • Asset Management • Financial Services
Open 145 daysVerified live · 1 hour ago 5 months ago

Data & AI Engineer – Equities Technology

$124k – $241k per year (Estimated) • Senior • 6+ years expRemote/Hybrid (Chicago, United States) • Bachelor's Degree • Senior
Python
SQL
C#
C#
ASP.NET Core
Databases
Databricks
Microsoft Fabric
AI/ML
Embeddings
LLM
RAG
Spark
AI Agents
OpenAI
DevOps
Azure
Azure DevOps
CI/CD
Rest API
Cybersecurity
GDPR
Analytics
ETL/ELT
Apply
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CorroHealth

corrohealth.com
CorroHealth is a healthcare revenue cycle management company headquartered in Plano, Texas, and formed in 2020 through the merger of Visionary RCM, T-System, RevCycle+, and TrustHCS. The company provides clinical documentation improvement, medical coding, denial management, and analytics services that help hospitals capture and defend revenue. It combines United States based clinical staff with large delivery operations in India and is backed by investors including Patient Square Capital and Carlyle.
corrohealth.com • HQ: Plano, United States • Hospitals & Clinics • Analytics Platforms • Data & Analytics • Payments • Financial Services • Health Care • Digital Health • 501-1000 employees • Est. 2020
HQ: Plano, United States • Hospitals & Clinics • Analytics Platforms • Data & Analytics • Payments • Financial Services • Health Care • Digital Health • 501-1000 employees • Est. 2020
Open 146 daysVerified live · 11 hours ago 5 months ago

Junior AI - Engineer

$20k – $57k per year (Estimated) • Junior • In office (Noida, India) • Bachelor's Degree • Full-Time • Junior
Java
Python
SQL
AI/ML
Claude
Embeddings
LLM
NLP
NumPy
Pandas
Prompt Engineering
PyTorch
Reinforcement Learning
Scikit-learn
TensorFlow
Anthropic
Hugging Face
OpenAI
MLFlow
Weights & Biases
DevOps
Git
Rest API
AWS
Azure
GCP
GitHub
Apply
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Field Nation

fieldnation.com
Field Nation operates a marketplace connecting companies with freelance field service technicians. Buyers post on-site work orders and independent contractors accept and complete them. The platform handles vetting, dispatch, payment and quality tracking.
fieldnation.com • HQ: Minneapolis, United States • Est. 2008
HQ: Minneapolis, United States • Est. 2008
Open 146 daysVerified live · 1 day ago 5 months ago

Senior Software Engineer (Full stack)

Senior • 4+ years expRemote/Hybrid (Dhaka, Bangladesh) • Bachelor's Degree • Full-Time • Senior
JavaScript
Node JS
PHP
SQL
TypeScript
Node JS
Nest.JS
Databases
MySQL
Apache Kafka
RabbitMQ
Frontend
React.js
Sass
Mobile
React Native
DevOps
AWS
Docker
Kubernetes
Rest API
SLI/SLO/SLA
Debian
Git
Ubuntu
Apply
Open 321 dayVerified live · 1 day ago 11 months ago

Software Engineer

Junior • 2+ years expRemote/Hybrid (Dhaka, Bangladesh) • Bachelor's Degree • Full-Time • Junior
Node JS
PHP
SQL
TypeScript
JavaScript
Node JS
Nest.JS
Databases
MySQL
Apache Kafka
RabbitMQ
Frontend
Redux
React.js
Sass
Mobile
React Native
DevOps
AWS
Docker
Kubernetes
Rest API
SLI/SLO/SLA
Debian
Git
Ubuntu
Apply
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Fal

fal.ai
Fal is a generative media AI infrastructure platform headquartered in San Francisco, California. Founded in 2021 by former Coinbase and Amazon engineers Burkay Gur and Gorkem Yurtseven, the enterprise is backed by prominent venture investors including Andreessen Horowitz (a16z), Bessemer Venture Partners, and Salesforce Ventures.
fal.ai • HQ: San Francisco, United States • Generative Video • LLM & Generative AI • Artificial Intelligence • Est. 2021
HQ: San Francisco, United States • Generative Video • LLM & Generative AI • Artificial Intelligence • Est. 2021
Open 147 daysVerified live · 8 hours ago 5 months ago

Technical Support Engineer

In office • Full-Time
Rest API
SLI/SLO/SLA
GitHub
Management
Slack
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WNS

wns.com
WNS is a global business process management and digital transformation company that delivers technology-driven operations and consulting services. Originally founded as a captive operations unit for British Airways, the enterprise has expanded into a worldwide leader providing industry-specific solutions across analytics, finance, customer care, and procurement. Combining advanced data intelligence, AI, and domain expertise, the organization serves hundreds of enterprise clients across major sectors like banking, healthcare, retail, and travel.
wns.com • HQ: New York, United States • Information Technology • IT Outsourcing • Professional Services • Data & Analytics • 1-10 employees • Est. 1996
HQ: New York, United States • Information Technology • IT Outsourcing • Professional Services • Data & Analytics • 1-10 employees • Est. 1996
Open 147 daysVerified live · 3 hours ago 5 months ago

Full Stack Senior Developer with Dot NET CORE & Angular 16 + ( Mandatory)

$85k – $155k per year (Estimated) • Senior • 8+ years expIn office (Edinburgh, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C#
SQL
TypeScript
JavaScript
C#
ASP.NET Core
Entity Framework Core
xUnit
Databases
Azure SQL Database
Frontend
Angular
NgRx
DevOps
Azure
Rest API
Azure DevOps
CI/CD
Docker
Apply
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Worldbusinesslenders

worldbusinesslenders.com
worldbusinesslenders.com • Ankara • Buenos Aires • New York • Guatemala City • Brasília • FinTech • Financial Services • Lending
Ankara • Buenos Aires • New York • Guatemala City • Brasília • FinTech • Financial Services • Lending
Open 148 daysVerified live · 1 day ago 5 months ago

Data Engineering Analyst

$21k – $118k per year (Estimated) • Middle • 4+ years expBrasília • Remote (Argentina, Brazil, Pakistan, Dominican Republic, Guatemala) • Bachelor's Degree • Full-Time • Middle • English
Python
SQL
Databases
Microsoft Fabric
AI/ML
Airflow
DevOps
Azure
CI/CD
Git
Rest API
GitHub
Analytics
ETL/ELT
Apply
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TransPerfect

transperfect.com
TransPerfect is the world’s largest provider of language services and AI technology solutions, headquartered in New York City, New York. Founded in 1992 by Phil Shawe and Liz Elting, the company operates across more than 100 cities on six continents with over 10,000 employees.
transperfect.com • HQ: New York, United States • Professional Services • Translation Services • 1001-5000 employees • Est. 1992
HQ: New York, United States • Professional Services • Translation Services • 1001-5000 employees • Est. 1992
Verified live · 1 day ago 5 months ago

Senior Software QA Analyst

Senior • 7+ years expIn office (Hanoi, Vietnam) • Bachelor's Degree • Full-Time • Senior
JavaScript
DevOps
Bitbucket
CI/CD
Jenkins
Rest API
Management
Confluence
QA
Playwright
Apply
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LeoLabs

leolabs.space
LeoLabs is a space situational awareness company headquartered in Menlo Park, California, and founded in 2016 as a spin-off from SRI International. The company operates a global network of phased array radars that track satellites and debris in low Earth orbit, publishing conjunction warnings and orbit determination data. It sells to satellite operators, insurers, and defense agencies that need independent tracking of objects and manoeuvres above the atmosphere.
leolabs.space • HQ: Menlo Park, United States • Military • Ground Systems • Earth Observation • Space Defense • Space & Aerospace • Space Services • Est. 2016
HQ: Menlo Park, United States • Military • Ground Systems • Earth Observation • Space Defense • Space & Aerospace • Space Services • Est. 2016
Verified live · 13 min ago 5 months ago

Radar Software Engineer

Equity • Middle • 3+ years expRemote/Hybrid • Bachelor's Degree • Middle
Python
SQL
DevOps
CI/CD
Configuration Management
GitHub Actions
Rest API
GitHub
Apply
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GoDaddy

godaddy.com
GoDaddy is a leading global domain registrar and web hosting provider that helps entrepreneurs and small businesses build and manage their digital presence. The company offers an all-in-one suite of online services, including domain name registration, website creation tools, e-commerce solutions, and website security. Serving millions of customers worldwide, it enables independent business owners and creators to establish, market, and scale their online ventures effectively.
godaddy.com • Pune • Gurgaon • Melbourne • Santa Clara • Ontario • Information Technology • Internet Services • Web Hosting • Domain Names • Est. 1999
Pune • Gurgaon • Melbourne • Santa Clara • Ontario • Information Technology • Internet Services • Web Hosting • Domain Names • Est. 1999
Open 148 daysVerified live · 3 hours ago 5 months ago

Senior Backend Software Engineer

$70k – $198k per year (Estimated) • Equity • Senior • 5+ years expIn office • Full-Time • Senior
Apex
Java
SQL
TypeScript
Apex
Lightning Web Components
AI/ML
Embeddings
Prompt Engineering
RAG
Function Calling
DevOps
AWS
CI/CD
Rest API
Marketing
Salesforce
Apply
Report
Penn State University Press is the publishing division of the Pennsylvania State University, headquartered in University Park, Pennsylvania, and established in 1956. The organization publishes peer-reviewed scholarly books and journals across various disciplines, including art history, religious studies, history, rhetoric, and the social sciences. As a member of the Association of University Presses, it operates globally by distributing academic research and general-interest titles through its imprints such as Eisenbrauns and Graphic Mundi.
psupress.org • HQ: University Park, United States • Publishing • Media & Entertainment • Books • Education • Higher Education • 1001-5000 employees • Est. 1956
HQ: University Park, United States • Publishing • Media & Entertainment • Books • Education • Higher Education • 1001-5000 employees • Est. 1956
Open 153 daysVerified live · 1 day ago 5 months ago

Part-Time Programmer Analysts

$103k – $206k per year (Estimated) • Middle • 3+ years expRemote/Hybrid (Park, United States) • Master's Degree • Part-Time • Middle
Python
Databases
Neo4j
AI/ML
Scikit-learn
DevOps
Git
Rest API
GitHub
Apply
Report

Morpho

morpho.org
Morpho is a decentralised lending protocol founded in 2021 by a team based in Paris. It replaces monolithic lending pools with minimal, immutable markets that anyone can configure, layering curated vaults on top for passive depositors. The protocol is used by fintech applications and exchanges to embed crypto-backed lending without operating their own credit infrastructure.
morpho.org • HQ: Paris, France • Creative Agencies • Design & Creative • Branding • Est. 2021
HQ: Paris, France • Creative Agencies • Design & Creative • Branding • Est. 2021
Open 153 daysVerified live · 5 hours ago 5 months ago

Staff Fullstack Engineer

$76k – $159k per year (Estimated) • Staff+ • Paris • Remote (France) • Full-Time • Staff
Node JS
TypeScript
JavaScript
Frontend
GraphQL
Next.js
React.js
DevOps
Grafana
OpenTelemetry
Rest API
Web3
DeFi
Morpho
Subsquid
Robotics
Apollo
QA
Sentry
Apply
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Xapien

xapien.com
Our clients use Xapien's AI for fully automated on-demand research on any person or company in the world, in minutes, not days.
xapien.com • HQ: London, United Kingdom • Analytics Platforms • Cybersecurity • Threat Intelligence
HQ: London, United Kingdom • Analytics Platforms • Cybersecurity • Threat Intelligence
Verified live · 12 hours ago 6 months ago

Staff Backend Engineer

$121k – $162k per year • Staff+ • 10+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Staff
Go
Go
Temporal
Databases
Apache Kafka
AI/ML
AI Agents
Claude
Claude Code
Copilot
Cursor
LLM
Edge AI
Gemini
RAG
OpenAI
DevOps
Docker
Grafana
gRPC
Kubernetes
GCP
Prometheus
Rest API
Apply
Verified live · 12 hours ago 6 months ago

Senior Backend Engineer

$108k – $175k per year • Senior • 10+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Senior
Go
Go
Temporal
Databases
Apache Kafka
ElasticSearch
AI/ML
LLM
Edge AI
Gemini
RAG
OpenAI
DevOps
Docker
Grafana
gRPC
Kubernetes
GCP
Prometheus
Rest API
Apply
Report

BTSE

btse.com
BTSE is a premier cryptocurrency exchange and financial technology provider that offers spot, futures, and OTC trading for institutional and retail clients. The company builds custom white-label exchange solutions and liquidity infrastructure to power other financial institutions and platforms in the crypto industry. Beyond trading, it provides an ecosystem of digital asset services, including payment gateways, crypto-backed cards, and earn products.
btse.com • Taipei • Jakarta • Abu Dhabi • Dubai • Cryptocurrencies • Blockchain & Crypto • Crypto Exchanges
Taipei • Jakarta • Abu Dhabi • Dubai • Cryptocurrencies • Blockchain & Crypto • Crypto Exchanges
Open 155 daysVerified live · 2 days ago 6 months ago

Senior Backend Engineer (Java/Python)

$76k – $214k per year (Estimated) • Senior • 5+ years expIn office • Full-Time • Senior
JavaScript
Python
SQL
Python
FastAPI
Databases
PostgreSQL
DevOps
CI/CD
Docker
GitLab CI
Rest API
GitLab
Apply
Report

Cytora

cytora.com
Cytora is a London company founded in 2014 that digitises commercial insurance risk intake. Its platform reads submissions, enriches them with external data and routes them automatically to the right underwriter. The company works with global insurers trying to process more business without adding headcount.
cytora.com • HQ: London, United Kingdom • Financial Services • Insurance • Artificial Intelligence • 1-10 employees • Est. 2014
HQ: London, United Kingdom • Financial Services • Insurance • Artificial Intelligence • 1-10 employees • Est. 2014
Open 155 daysVerified live · 1 day ago 6 months ago

Senior Backend Engineer

$92k – $167k per year (Estimated) • Senior • Remote/Hybrid • Visa sponsorship • Full-Time • Senior • English
Python
Python
FastAPI
HTTPX
Mypy
SQLAlchemy
structlog
Databases
Google BigQuery
PostgreSQL
Redis
AI/ML
Prompt Engineering
Tesseract OCR
Vertex AI
OCR
DevOps
AWS
AWS Lambda
CircleCI
Datadog
Docker
GCP
Git
Kubernetes
Rest API
Terraform
Amazon S3
API Gateway
GitHub
Cybersecurity
Auth0
QA
Pytest
Apply
Report

Galaxy Digital

galaxy.com
Galaxy Digital is a financial services and investment management firm specializing in digital assets, cryptocurrency, and blockchain technology. Founded by Michael Novogratz, the company serves as a bridge between traditional finance and the crypto ecosystem through institutional trading, asset management, investment banking, and mining operations. Additionally, it has expanded into digital infrastructure, providing data center capabilities to support high-performance computing, artificial intelligence, and decentralized networks.
galaxy.com • HQ: New York, United States • Hardware • Financial Services • AI Infrastructure • Blockchain & Crypto • 501-1000 employees
HQ: New York, United States • Hardware • Financial Services • AI Infrastructure • Blockchain & Crypto • 501-1000 employees
Verified live · 2 hours ago 6 months ago

Director, Product Manager (Portfolio Margin and Risk)

$166k – $336k per year (Estimated) • Equity • Executive • 7+ years expIn office (New York, United States) • Architect
Tokenization
DevOps
HPC
Rest API
WebSockets
Apply
Open 295 daysVerified live · 2 hours ago 10 months ago

Vice President, Senior Backend Developer - Lending/Commercial (Mumbai)

$25k – $69k per year (Estimated) • Executive • 7+ years expIn office • Bachelor's Degree • Senior
SQL
TypeScript
Node JS
JavaScript
Node JS
Nest.JS
Databases
Apache Kafka
AI/ML
Tokenization
DevOps
Rest API
HPC
AWS
Azure
Bitbucket
Docker
GCP
Git
Kubernetes
Web3
Bitcoin
Staking
QA
Postman
Apply
Report

Coface

coface.com
Coface is a global leader in trade credit insurance, risk management, and business information services. Operating across dozens of countries, the company helps businesses of all sizes protect their revenue streams against commercial default and non-payment risks. By providing deep economic insights, credit assessments, and debt recovery solutions, Coface enables organizations to trade safely and expand securely in domestic and international markets.
coface.com • Jakarta • Princeton • Miami • Dresden • Mainz • Risk Management • Financial Services • Insurance
Jakarta • Princeton • Miami • Dresden • Mainz • Risk Management • Financial Services • Insurance
Open 158 daysVerified live · 1 hour ago 6 months ago

Stream Lead Java

Lead • 8+ years expRemote/Hybrid (Bucharest, Romania) • Bachelor's Degree • Full-Time • Senior
Java
TypeScript
JavaScript
Java
Spring Boot
Spring Cloud
Databases
Apache Kafka
Oracle
Frontend
Angular
DevOps
CI/CD
Docker
Kubernetes
Rest API
GitLab CI
Jenkins
GitLab
Apply
Report

Tebra

tebra.com
Tebra is a healthcare technology company headquartered in Newport Beach, California, formed in 2021 following the merger of Kareo and PatientPop. The firm develops a comprehensive cloud-based platform that integrates electronic health records, medical billing, patient scheduling, and practice marketing tools for independent healthcare providers. Operating primarily within the United States, the company supports thousands of private practices and billing companies by automating administrative tasks and enhancing patient engagement through AI-driven solutions.
tebra.com • HQ: Newport Beach, United States • Sales & Marketing • Medical AI • Artificial Intelligence • Hospitals & Clinics • Billing & Invoicing • Software • Health Care • Digital Health • Est. 2021
HQ: Newport Beach, United States • Sales & Marketing • Medical AI • Artificial Intelligence • Hospitals & Clinics • Billing & Invoicing • Software • Health Care • Digital Health • Est. 2021
Open 160 daysVerified live · 1 day ago 6 months ago

Senior Software Engineer

Senior • 5+ years expRemote/Hybrid (Heredia, Costa Rica) • Internship • Senior
JavaScript
TypeScript
Java
Java
Lombok
MapStruct
Maven
Spring Boot
Databases
ActiveMQ
Apache Kafka
Redis
AI/ML
ChatGPT
Copilot
LLM
OpenAI Codex
Frontend
Angular
React.js
Mobile
JUnit
DevOps
Rest API
GitHub
QA
TestNG
Apply
Open 160 daysVerified live · 1 day ago 6 months ago

Senior Software Engineer

$131k – $237k per year (Estimated) • Senior • 5+ years expRemote/Hybrid • Internship • Senior
JavaScript
TypeScript
Java
Java
Lombok
MapStruct
Maven
Spring Boot
Databases
ActiveMQ
Apache Kafka
Redis
AI/ML
ChatGPT
Copilot
LLM
OpenAI Codex
Frontend
Angular
React.js
Mobile
JUnit
DevOps
Rest API
GitHub
QA
TestNG
Apply
Report

Cambridge Mobile Telematics

cmtelematics.com
Cambridge Mobile Telematics is the world’s largest telematics service provider. Our mission is to make the world’s roads and drivers safer.
cmtelematics.com • Tokyo • Budapest • Cambridge • Chennai • Internet of Things • Transportation & Logistics • Smart Mobility
Tokyo • Budapest • Cambridge • Chennai • Internet of Things • Transportation & Logistics • Smart Mobility
Open 161 dayTop 25% pay 6 months ago

Principal Software Engineer, Mobile

$167k – $209k per year • Equity • Lead • 7+ years expRemote/Hybrid (Cambridge, United States) • Bachelor's Degree • Principal
Java
Kotlin
Objective-C
Python
Ruby
Swift
Java
Gradle
RxJava
Kotlin
Dagger
Kotlin Coroutines
Retrofit
Mobile
Android SDK
CocoaPods
Jetpack Compose
MVVM
VIPER
DevOps
CI/CD
Rest API
Apply
Report

Egis Group

egis-group.com
Egis is a French multinational consulting, construction engineering, and mobility services firm operating across infrastructure, buildings, transportation, and energy sectors. The company delivers end-to-end solutions by managing projects throughout their entire lifecycle, from initial architectural design and urban planning to long-term operation and maintenance. With a strong emphasis on smart infrastructure and sustainable development, it helps public and private clients navigate climate challenges and urban expansion globally.
egis-group.com • Manchester • Farnborough • Dublin • Northampton • Newcastle upon Tyne • Transportation & Logistics • Transport Infrastructure • Science & Engineering • Civil & Structural Engineering • 5000+ employees
Manchester • Farnborough • Dublin • Northampton • Newcastle upon Tyne • Transportation & Logistics • Transport Infrastructure • Science & Engineering • Civil & Structural Engineering • 5000+ employees
$65k – $83k per year • Senior • 5+ years expRemote/Hybrid (Toronto, Canada) • Full-Time • Senior • English
C#
Python
JavaScript
PowerShell
SQL
DevOps
Rest API
Robotics
Digital Twin
Analytics
Power BI
ETL/ELT
Apply
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Rest API Jobs - Remote & On-site
Frequently asked questions
Rest API: How many jobs are available now?
Alion currently lists 4,467 Rest API jobs across multiple companies, updated frequently.
Rest API: What is the typical salary for these roles?
The typical salary for Rest API roles on Alion is about $115,376 USD.
Rest API: Are remote work, relocation, or visa sponsorship options available?
Many Rest API listings are remote or hybrid; individual job posts specify relocation and visa sponsorship when available.
Rest API: How do I apply to jobs on Alion?
Open a Rest API listing to read the details and click apply to submit through the employer or Alion's application process.