Senior Backend Software Engineer

Join our innovative team at 360IT Professionals as a Full-Time Ruby on Rails Developer! We are seeking a talented individual who is passionate about coding and thrives in a collaborative environment. In this role, you will be responsible for developing high-quality web applications using Ruby on Rails, ensuring optimal functionality, and working closely with cross-functional teams to deliver exceptional user experiences.

Join our dynamic team at 360itprofessionals1 as a Full-Time Ruby on Rails Developer! We are seeking a talented and passionate developer who is eager to work on innovative projects and collaborate with a team of skilled professionals. This role offers an exciting opportunity to contribute to the development of cutting-edge applications.

Join our innovative team at 360IT Professionals as a Ruby on Rails Developer. You will work on exciting projects that leverage your skills in developing cutting-edge web applications. Collaborate with a dynamic group of professionals and contribute to the growth and success of our organization.

Join our dynamic team at 360 IT Professionals as a Junior Ruby on Rails Developer. In this role, you'll have the opportunity to work with cutting-edge technologies to develop robust API solutions and manage PostgreSQL databases. We are looking for enthusiastic individuals ready to learn and grow their skills in a collaborative environment.

About Levelpath:Established in 2022 and supported by leading venture capital firms in Silicon Valley, Levelpath aims to transform the procurement software landscape, making it delightful for all businesses, regardless of size. Our innovative platform streamlines the procurement process, enhancing speed, safety, and transparency across the organization.Leveraging AI technology, we empower users, boost productivity, and simplify workflows, unlocking extraordinary procurement opportunities.At Levelpath, we champion growth that occurs outside of comfort zones, and we believe in reaching our full potential when faced with challenges. Our work environment thrives on problem-solving and accountability, where every team member is an owner.Engineering at Levelpath:We are on the lookout for dedicated backend developers to join our team and contribute to our customer-facing applications. Success in this role requires significant experience with Ruby and Ruby on Rails, familiarity with service-oriented architectures, GraphQL, REST, and collaboration with front-end teams utilizing React/TypeScript.This role is office-based in downtown San Francisco, providing the opportunity to lead a team in an agile environment with swift decision-making processes. As a founding member, you will play a key role in building a generational company.Responsibilities:Take ownership of a significant portion of the platform development within your initial months, maintaining a strong focus on user experience.Utilize your backend and distributed systems knowledge to scale our Rails-based platform while continuously improving code quality, tools, and processes.Collaborate closely with local and global team members based in San Francisco.Recognize customer challenges and innovate solutions through daily prototyping, refining, and delivering.

Join our innovative team at stemxpert1 as a Java Developer. In this full-time position, you will be instrumental in developing and maintaining scalable software applications. You will collaborate with cross-functional teams to design and implement solutions that meet business needs.

Join Sonsoft Inc., a leading technology solutions provider located in the heart of San Francisco. We are seeking a talented UI Developer with experience in AngularJS to join our dynamic team. In this role, you will be responsible for designing and developing user interfaces that provide an exceptional user experience.

Join our dynamic team at 360IT Professionals as a Senior Full Stack Developer. We are seeking a talented individual who thrives in a collaborative environment and is passionate about building scalable web applications. You will be responsible for both frontend and backend development, ensuring the seamless integration of technologies to deliver optimal user experiences.

Join our dynamic team at 360IT Professionals as a Full Stack Developer. We are seeking a passionate individual who thrives in a collaborative environment and is eager to take on complex challenges. If you are proficient in both front-end and back-end technologies, and are looking for a stimulating role in San Francisco, we want to hear from you!

Join our innovative team at crewAI as a Senior Fullstack Engineer. In this pivotal role, you will help propel the crewAI+ platform forward, a robust Ruby on Rails application that integrates Python services. Your expertise in both backend and frontend development will be essential for ensuring seamless functionality and high performance. We are looking for a proactive individual with a solid background in Ruby, Python, and React who thrives in a collaborative, dynamic environment.

At Impulse, we believe in the potential of talented individuals, even when we may not have a specific position open that perfectly matches your skills. We are always open to exceptional applications and may consider extraordinary candidates for future roles.

About Pax HistoriaPax Historia is an innovative alternate-history sandbox game that allows players to select a country and a pivotal moment in time, enabling them to rewrite history. Imagine a world where Rome never fell, the Soviet Union thrived, or Genghis Khan reigned longer.Supported by Y Combinator, Pace Capital, and Z Fellows, our game has amassed nearly 20 million rounds played and is experiencing rapid growth. Your contributions will impact a product enjoyed by hundreds of thousands of players.Our CultureMany of our players discover Pax Historia through word-of-mouth, YouTube reviews, and other organic channels, and they return because of our commitment to building an exceptional game. We want every team member to share this passion. History enthusiasts are particularly welcome, but we encourage anyone who can articulate their excitement about our game to apply.As a small company, you will collaborate closely with the cofounders and a select group of employees. We seek self-motivated individuals who are team players and ready to champion their ideas. The leadership style here values autonomy, allowing you to thrive without micromanagement.Flexibility is crucial in our fast-paced environment. As we scale, be prepared to address various challenges that arise.Your RoleWe are looking for a full-time web developer to join us on-site in San Francisco (Dogpatch). You will report directly to the cofounders. This role is intensive, with an expected commitment of 50-60 hours per week initially, transitioning to potentially fewer hours as you settle in. While we prefer candidates who can commit to in-person work, there may be slight flexibility for hybrid arrangements (e.g., 1 day per week remote). Your schedule will have some flexibility.As a web developer, you will play a key role in enhancing the customer experience on paxhistoria.co.Given our small team size, you will also be expected to assist with various ad-hoc projects as they arise. This is a dynamic, evolving role!

Join our dynamic team at 360itprofessionals as a Full Stack Developer, where you will be instrumental in designing and implementing innovative solutions. Your expertise in both front-end and back-end development will help us create robust applications that enhance user experience and drive business objectives.

Join our dynamic team as a Retail Reset Merchandiser in San Francisco! This full-time position involves collaborating with retail partners to ensure optimal product placement and presentation on the sales floor. You will play a crucial role in enhancing the shopping experience for customers by executing product resets, maintaining displays, and ensuring compliance with merchandising standards.

Join our dynamic team as a Full-Time Reset Merchandiser in San Francisco! In this role, you will be responsible for the effective merchandising of products in retail environments, ensuring that displays are appealing and inventory is well stocked. Your attention to detail and ability to follow directives will be crucial in optimizing product placement. This is an excellent opportunity for those looking to start their career in retail merchandising.

Job Title: Senior Full Stack Developer - CryptographyLocation: San Francisco, CAExperience: 5+ yearsType: Full-TimeSponsorship: Available for H1B VisaSalary: $140K - $200K per yearOther Compensation: Equity OptionsRelocation: AvailableJob ID: T8065NAbout BloKchain Talent: As a premier blockchain recruiting agency, we are on the lookout for a Senior Full Stack Developer to join our client, a pioneering startup that has developed one of the world’s fastest blockchain solutions, currently handling 120K Transactions Per Second (TPS) with plans to scale beyond 1 Million TPS. This is your chance to contribute to a transformative product that will redefine the landscape of alternative stablecoins.In this role, you will be instrumental in ensuring the products align with design specifications and user experiences. You will collaborate with product managers and play a critical role in shaping the product vision while adhering to high-quality standards.

Join our dynamic team at Elite Solutions as we expand our AI-driven initiatives! We are in search of talented developers, engineers, and researchers who are eager to shape the future of artificial intelligence systems.Whether your expertise lies in creating user-friendly interfaces, developing robust back-end systems, training advanced AI models, or designing scalable infrastructure, we have a place for you!If you're unsure where your skills best fit, don't worry—we'll provide guidance. Explore the roles below and let us know which aligns with your interests and abilities.1. Front-End DeveloperResponsible for designing and implementing engaging user-facing applications and dashboards. Key Skills: React, JavaScript/TypeScript, TailwindCSS, Figma, UX principles.2. Back-End DeveloperTasked with building APIs and server-side systems that drive AI tools and data pipelines. Key Skills: Python, FastAPI, Go, SQL/NoSQL, REST/GraphQL.3. Full-Stack EngineerDevelops complete applications that link front-end interfaces with back-end AI logic. Key Skills: Combination of Front-End and Back-End skills, API design, CI/CD.4. Machine Learning EngineerResponsible for deploying, fine-tuning, and maintaining AI models in production. Key Skills: PyTorch/TensorFlow, MLOps, model serving, inference optimization.5. Data EngineerBuilds scalable data pipelines and manages datasets essential for training and evaluation. Key Skills: Apache Airflow, Spark, SQL, Python, BigQuery, ETL systems.6. Research EngineerBridges the gap between AI theory and practical application by developing prototypes. Key Skills: Python, ML libraries, LLM experimentation, rapid prototyping.7. DevOps / Site Reliability Engineer (SRE)Ensures the reliability, monitoring, and automation of AI systems. Key Skills: Kubernetes, Docker, Prometheus, CI/CD, Python/Bash.8. Infrastructure EngineerDesigns and maintains the cloud infrastructure that supports AI training and deployment. Key Skills: AWS/GCP, Terraform, distributed systems, cost optimization.9. Security EngineerResponsible for securing the platforms and services that support our AI stack. Key Skills: Cloud security, identity management, penetration testing, audits.10. AI Researcher (LLM / CV / RL)Conducts experiments to advance the science behind our models, including LLMs, computer vision, and reinforcement learning. Key Skills: Research publications, advanced ML theory, model development, experimentation.

Join Scale AI as we prepare for the ICLR 2026 conference! We’re seeking talented individuals to contribute to our innovative projects in AI. Be part of a dynamic team that thrives on creativity and collaboration, pushing the boundaries of artificial intelligence.

Join our dynamic team at Sonsoft Inc. as an iOS Developer. In this role, you will leverage your expertise in mobile application development to create innovative solutions that enhance user experiences. You will work on exciting projects in a collaborative environment, utilizing the latest technologies and best practices in iOS development.