Top API Development & Integration Companies in Los Angeles, California

Goji Labs

Verified

We Define the Right Build Before We Start It.

A redesign. A rebuild. A new feature. The request you start with rarely tells the whole story. Goji Labs helps enterprise teams determine what the business needs before they commit significant time and budget to building the solution. Our clients include publicly traded and PE-backed companies such as TGS, Root Insurance, and Mitsubishi's AnyMile. Every engagement starts with a fixed-fee Strategy Sprint. You leave with a clear recommendation: what to do, why it matters, what success should look like, and what it will take to deliver. That recommendation becomes the brief for design and engineering. Headquartered in Los Angeles.

AppMakers USA

Verified

AI-Supercharged Senior US App Developers

AppMakers USA is a premier mobile and web development company that transforms innovative ideas into powerful digital solutions. We specialize in native and cross-platform app development, enterprise software, AI integration, and cloud-based applications. Our team of engineers, designers, and strategists works collaboratively to craft intuitive, scalable, and secure products tailored to each client’s goals. We serve industries including healthcare, finance, logistics, and e-commerce, ensuring top-tier functionality and smooth user experiences. With a commitment to agile development, cutting-edge tech stacks, and long-term support, AMUS helps businesses stay ahead in today’s fast-paced digital world. Whether launching a new product or optimizing existing technology, we deliver excellence at every stage of development.

EltexSoft

Verified

AI-first engineering studio. The seniors who scope your build are the ones who ship it.

EltexSoft is an AI-first software engineering studio. Since 2015 we've built and maintained web, mobile, and AI products for founders and established companies, and we run every engagement with senior engineers who stay on the account for years rather than rotating off after kickoff. We're 35 to 50 people across Los Angeles, New York, and Kyiv. The engineer who scopes your project is the one who ships it, so context compounds instead of resetting each quarter. That continuity is why our client relationships are measured in years. What we build: ✓ Full-stack web (Laravel, Python, React, Node) ✓ Native mobile (iOS and Android) ✓ AI and generative-AI features, in production ✓ QA, DevOps, and CI/CD ✓ Senior staff augmentation for teams that need capacity fast Where we work: real estate, healthcare, sports, food delivery, e-commerce, fintech, and education, from platforms under heavy production load to consumer apps with millions of installs. We've been AI-first since 2021, when we started with AI-assisted test coverage because quality is how we compete. Today AI runs through every workflow: research, architecture, code review, testing, and shipping. Rated 5.0 on Clutch. Expert-Vetted (top 1%) on Upwork. If you want a team that writes maintainable code, tells you the truth, and is still there long after launch, that's us.

iQlance is a leading Software Development Company Los Angeles businesses trust for innovative and scalable digital solutions. With years of experience in software development in Los Angeles, we specialize in building high-performance applications tailored to meet unique business needs. As a top-rated custom software development company Los Angeles, iQlance delivers end-to-end services including web development, mobile app development, enterprise software, and AI-powered solutions. Our expert team focuses on delivering reliable, secure, and user-friendly applications that help businesses grow and stay competitive. Whether you are searching for software development Los Angeles services or a trusted Software Development Company near me, iQlance provides customized solutions that align perfectly with your business goals. Our expertise in custom software development Los Angeles ensures every project is built with precision, scalability, and future-ready technology. Partner with iQlance for high-quality software development in Los Angeles and transform your business ideas into powerful digital products.