For our US partner, FieldFlo company, we are seeking a Senior Full Stack PHP Developer with AI/ML expertise from the Balkan region. This remote position, offered under a B2B contractor agreement, is part of the established Serbian development hub.
ABOUT THE ROLE:
As a Senior Full Stack PHP Developer with AI/ML expertise, you’ll be part of our fast-growing Serbian development hub, driving end-to-end feature development with PHP (CodeIgniter 3), JavaScript, HTML, CSS, and SQL. While dedicating 80% of your time to building and enhancing core functionality and 20% to QA and bug resolution, you’ll also lead innovation by creating AI/ML-powered assistants and leveraging AWS services to shape the future of our SaaS platform.
JOB DESCRIPTION:
- Develop new features from start to finish, contributing across the development lifecycle.
- Spend 80% of your time on development and 20% on quality assurance.
- Work with PHP (CodeIgniter 3), JavaScript (jQuery), HTML, CSS (Bootstrap is a plus), and SQL.
- Maintain and improve existing features for efficiency and relevance.
- Quickly resolve bugs to ensure product stability and user satisfaction.
- Drive innovation by designing and deploying AI/ML-powered features and assistants, including conversational and form-filling solutions, and integrate AWS AI services (Transcribe, Bedrock, Polly, SageMaker) to enhance platform intelligence.
REQUIREMENTS:
Must-Haves:
- 5+ years of experience as a Full Stack PHP Developer, with expertise in CodeIgniter and efficient SQL query crafting (MySQL/Postgres/NoSQL).
- Skilled in AWS deployment.
- Proficient in HTML, CSS, JavaScript, and jQuery for seamless front-end integration.
- Familiarity with DevOps tools (Docker, Kubernetes).
- Fluent in English with strong communication skills for remote collaboration.
AI/ML & Applied Innovation Experience (Required):
- Hands-on experience in developing and deploying AI-powered features or assistants, especially conversational or form-filling assistants.
- Experience with building agentic AI assistants that interact with both structured data and unstructured inputs (speech, images).
- Proven experience working on Proof of Concept (PoC) or MVP phases for AI/ML products, with strong skills in quick iteration cycles, feasibility validation, and rapid prototyping.
Experience with integration and deployment of core AWS AI services:
- Amazon Transcribe (speech-to-text pipelines)
- Amazon Bedrock (LLM orchestration, prompt engineering, chain-of-thought reasoning)
- Amazon Polly (text-to-speech synthesis)
- SageMaker Studio (model training and deployment)
Nice-to-Haves:
- Experience with Node.js, React.js, and Python.
- Hands-on knowledge of Kubernetes (EKS) and asynchronous architectures.
- Familiarity with advanced observability tools like New Relic and DataDog.
ABOUT THE COMPANY:
FieldFlo is an international SaaS platform based in Denver, Colorado, focused on supporting asbestos abatement, demolition, and subcontractor businesses. The Serbian team plays a vital role in developing and maintaining this innovative platform, streamlining construction operations and revolutionizing project management.
WHAT WE OFFER:
- Full-time remote work with flexible hours.
- Requirement to overlap 2 hours with the West USA coast time zone.
- B2B contractor agreement.
- Competitive salary.
- Adherence to national holidays.
- Opportunities for professional growth in a dynamic environment.
- Work alongside talented industry experts to revolutionize the construction industry.
RECRUITMENT PROCESS:
- HR Interview: HC Solutions Recruitment Team
- Technical Interview: Engineering Team Member (technical questions)
- Architecture Interview: VP of Engineering
- Final Interview: CTO
HC Solutions
We are a group of experienced recruiters and HR managers with an extensive background in the IT industry. We are based in Belgrade, Serbia and during our professional career, we worked with many international IT companies in the fields of fintech, gaming industry, health., etc. In 2020 we created HC Solutions (standing for Human Capital Solutions), and as our name says we are providing solutions either for talented IT experts who are looking for the right job or for IT companies who are searching…