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Long-Term Technical Partner for Agencies — Backend, APIs, Data Pipelines Looking for IT agencies and consultancies that need extra backend and data engineering capacity. Do you already have B2B clients and projects but sometimes lack the backend/data engineering capacity to deliver the technical work? I can join your projects as an external technical partner or subcontractor. To be clear about what this is not: I'm not looking for direct end-client work, and I'm not asking you to sell for me. You own the client, the commercial terms, and the relationship. I own the agreed technical scope and deliver it. I can help with projects involving: Student Projects & Assignments – Support with programming projects, academic assignments, debugging, and technical guidance. Data Structures & Algorithms (DSA) – Problem solving, coding challenges, algorithm design, optimization, and interview preparation. Operating Systems – OS concepts, processes, threads, memory management, synchronization, scheduling, and related assignments. Computer Networks – Networking concepts, protocols, TCP/IP, HTTP/HTTPS, troubleshooting, and network-related projects. Database Management Systems (DBMS) – Database design, normalization, indexing, transactions, queries, and database optimization. SQL & PostgreSQL – SQL queries, joins, subqueries, stored procedures, database design, optimization, and PostgreSQL development. NoSQL Databases – MongoDB, Redis, and other NoSQL technologies, including data modeling and performance optimization. Back-End Development – API development, server-side applications, authentication, database integration, and backend architecture. Full-Stack Development – End-to-end web application development, covering both frontend and backend technologies. Python Development & Automation – Custom scripts, workflow automation, data processing, API integrations, and repetitive-task automation. Technical Content Writing – Technical documentation, programming tutorials, developer-focused articles, documentation, and educational content. Technical Support – Troubleshooting, debugging, software support, technical guidance, and issue resolution. Mock Interviews – Technical mock interviews, coding interviews, DSA interviews, system-design discussions, and interview feedback. Interview Preparation & Virtual Support – One-on-one guidance, technical interview preparation, problem-solving practice, and real-time virtual support to help candidates prepare for and perform better in technical interviews. I can work completely behind the scenes or participate directly in technical communication with the client, depending on how your project is structured. Payment Commercial terms are agreed separately for each project: hourly, fixed-price, or another arrangement that works for both sides. I’m particularly interested in agencies and consultants who already have a steady flow of technical projects and occasionally need additional engineering capacity without hiring a full-time employee. If this model fits your business, please briefly tell me: 1. What does your company do? 2. What types of projects do you usually deliver? 3. What technical work do you most often need additional support with? Happy to start with a small paid piece of work so you can see how I deliver before anything bigger.
Project ID: 40734968
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58 freelancers are bidding on average ₹21,423 INR for this job

Hi, CnEL India can work as your external technical partner for backend, APIs, databases, data engineering and automation projects, supporting your agency behind the scenes or directly with clients as required. Our methodology: * Review each project scope, existing codebase and technical requirements. * Define architecture, database models, API contracts and implementation milestones. * Develop secure REST APIs and backend services using suitable technologies. * Handle PostgreSQL/SQL, MongoDB, Redis, data modelling, queries and performance optimization. * Build Python scripts, data processing and workflow automations. * Integrate third-party APIs with validation, retries, logging and error handling. * Debug existing systems and resolve issues without disrupting working functionality. * Apply authentication, authorization, validation and secure data handling. * Use Git-based development with clear commits, testing and documentation. * Perform functional, integration and regression testing before handover. * Provide clean source code, technical documentation and deployment support. We can start with a small paid technical task to establish the workflow, then support larger projects through clearly defined scopes and milestones.
₹25,000 INR in 15 days
6.9
6.9

Hello dear sir, I have over 10 years of experience in Java, J2EE, Python and API development. I can build secure, fast and reliable backend systems for your project. I also have strong skills in SQL, PostgreSQL, Angular and React. I can handle database design, optimization and technical documentation. I also work with web scraping, AI and image processing. I am flexible with different technologies and can provide solutions based on your needs. Looking forward to work with you. Thanks and Regards !! Deepak
₹70,000 INR in 20 days
5.3
5.3

As a seasoned professional with substantial experience in API and backend development, I offer a unique value proposition that aligns perfectly with the support you require. With a background in Computer Science and Artificial Intelligence, I bring a well-rounded skill set that involves everything from robust database design and management to scalable architecture and more. My most recent role as a CTO for an AI startup has honed my ability to deliver advanced technical solutions consistently. I've developed full-stack SaaS applications, custom AI tools, mobile and web applications, API integrations, and cloud deployments among others. By choosing me as your technical partner, you can leverage my proficiency in not only backend development but also in frontend web development, database management and computer vision. In conclusion, my range of skills combined with nearly two decades of hands-on experience make me an ideal candidate for your project. Trust me with your backend and data engineering related tasks, you will benefit from not just my expertise but the peace of mind that comes with knowing you're working with a tried-and-true performer who has no intention of simply meeting expectations but exceeding them every step of the way. Thank you for considering my application!
₹12,500 INR in 7 days
4.7
4.7

Hi, With my comprehensive skills in API development and full stack development, I can offer the reinforcement you need for your backend and data engineering tasks. My portfolio includes developing complex, data-driven web applications, building an API framework to facilitate data integration between various systems, and supporting an extensive range of languages like Asp.Net, .NETCORE Frameworks, Laravel and ReactJS. Many of the technical areas in your project description align with my areas of expertise. From database management systems to NoSQL Databases like MongoDB and Redis, I have hands-on experience with data modeling, optimization, and more. Throughout my career, I've been acknowledged for my productive communication which underpins timely and effective project completion. With a 94% job completion rate and a penchant for client satisfaction demonstrated by recommendations from clients, I'm confident I can provide a tangible value addition to your projects. In true alignment with your requirement, I understand that as an external technical partner or subcontractor, my responsibility is to handle the agreed-upon technical scope efficiently while enabling you to maintain ownership of the client relationship. Let's start with a small paid task so you can gauge my effectiveness firsthand before we pursue more extensive projects together. Looking forward to the possibility of partnering with you to enhance your backend capabilities.
₹18,000 INR in 7 days
4.1
4.1

==== Hi - Albert here ==== "BACKEND & DATA ENGINEERING SUPPORT" — you need dependable technical capacity for agency projects without adding a full-time backend or data engineer. I can support API development, PostgreSQL/MySQL/MongoDB/Redis work, database optimisation, Python automation, data pipelines, debugging, and backend integrations. I’d work within your existing architecture and Git workflow, keep documentation clear, and communicate directly with your team when needed. What type of backend or data-engineering work do your clients most frequently need additional support with? Looking forward to work with you
₹25,000 INR in 2 days
3.5
3.5

Hi, This partnership model fits well with how I work. I’m a senior software engineer focused on backend systems, APIs, databases, automation, and data-heavy applications, and I’m comfortable working behind the scenes as a subcontractor or joining client-facing technical discussions when needed. My work typically covers Node.js/TypeScript and Python backends, REST APIs, PostgreSQL/SQL, MongoDB, Redis, database design and optimisation, debugging, workflow automation, integrations, and full-stack development where required. I’m particularly comfortable taking ownership of clearly defined technical scopes while your team retains the client relationship and commercial management. I can also support documentation, code reviews, troubleshooting, and technical guidance across ongoing projects. The areas where I could add the most capacity are backend/API development, PostgreSQL and database work, automation, data processing, and debugging existing systems. One question: what type of work currently creates the biggest delivery bottleneck for your team—backend development, database/data tasks, or ongoing technical support? Best regards, Jaroslav Caprata
₹12,500 INR in 3 days
3.6
3.6

Hello, Are you an IT agency or consultancy seeking additional backend and data engineering support for your projects? I understand the challenges of managing technical capacity for B2B clients and projects, which is why I offer to join your team as an external technical partner or subcontractor. My expertise lies in a wide range of areas, including backend development, API integration, data pipelines, database management, full-stack development, Python automation, technical content writing, and more. Whether you need support with student projects, data structures, operating systems, computer networks, or interview preparation, I can provide the technical expertise you require. With a commitment to clear communication, quality deliverables, and reliable post-launch support, I aim to seamlessly integrate into your projects and help you meet your clients' technical requirements. You can view examples of my past work in my portfolio: https://www.freelancer.com/u/rajeshrolen I am eager to discuss how I can support your agency's technical needs further. Please feel free to open a chat to explore how we can collaborate effectively. Sincerely, Rajesh Rolen
₹12,500 INR in 7 days
2.9
2.9

Dear Hiring Manager, I’m interested in partnering with your agency as a long-term backend and software development resource. I understand that agencies often have a steady pipeline of client projects but may occasionally need additional technical capacity without the cost or commitment of hiring a full-time developer. I can work as an external technical partner or subcontractor, taking ownership of an agreed technical scope while allowing your agency to maintain full control of the client relationship, communication, and commercial terms. My technical experience includes: * Backend API development and server-side application development * C# / .NET and ASP.NET Core * REST APIs, authentication, authorization, and third-party API integrations * SQL Server, PostgreSQL, database design, queries, stored procedures, and optimization * Entity Framework Core and database-driven applications * Redis and NoSQL-based solutions * Python development, automation, data processing, and API integrations * Full-stack web application development * Debugging, troubleshooting, performance optimization, and production issue resolution * Data processing and backend/data pipeline development * Technical documentation and developer-focused documentation * Git-based development, code reviews, deployment support, and CI/CD workflows Thanks!
₹25,000 INR in 7 days
2.7
2.7

Hello, With strong experience in backend development, SQL, PostgreSQL, MongoDB, Redis, API development, Python automation, and data engineering, I can work as a reliable technical partner behind the scenes for your agency and client projects. I can support API development, database design and optimization, data pipelines, workflow automation, debugging, authentication, integrations, and full-stack tasks. I’m comfortable working with existing codebases, investigating technical issues, and delivering maintainable solutions without disrupting the client-facing workflow. For data-heavy systems, I can work across PostgreSQL, MongoDB, and Redis, including query optimization, indexing, data modeling, caching, transactions, and reliable API/database integration. I can also build Python scripts for data processing and repetitive workflow automation. I’m comfortable following your existing development standards, communicating directly with clients when appropriate, or remaining completely behind the scenes as your technical resource. Thanks, Diego Vinicius
₹25,000 INR in 7 days
2.3
2.3

I can start right now I have checked the details. You are looking for a reliable backend and data engineering partner to handle overflow capacity for agencies, specifically covering everything from DBMS, PostgreSQL, and API development to DSA and system concepts. Here are the answers to your questions: 1. We run a digital consultancy building custom web apps and data pipelines for growing businesses. 2. We usually deliver full-stack SaaS products and automated reporting dashboards. 3. We most often need additional support with backend architecture, complex SQL/PostgreSQL optimization, and heavy Python data processing. I have one quick question: do you prefer communicating via Slack or GitHub issues when plugged into an active sprint? lets do it
₹12,500 INR in 7 days
2.1
2.1

Hi I can work as your behind-the-scenes technical partner, providing reliable backend, API, database, Python automation, data engineering, and full-stack development support under your agency’s client relationship. With 7+ years of development experience, I can take ownership of agreed technical scopes, communicate directly when needed, and start with a small paid task to establish the workflow. 1. What types of backend, API, database, or data-engineering projects do you most frequently need additional capacity for? 2. What technology stack do your clients most commonly use—Python, Node.js, PHP/Laravel, PostgreSQL, MongoDB, or others? if looking for expert then lets connect (having UK , UAE and Country Experience)
₹30,000 INR in 7 days
0.8
0.8

I can immediately integrate as your backend and data engineering partner to handle your overflow capacity. I’ve reviewed your requirements and have the architecture and script logic ready to deploy for your specific database and API needs. I’m prepared to send a functional sample for your current project in chat immediately to prove my technical alignment. I offer a rapid 2-day turnaround for project modules. My work comes with a zero-risk guarantee: you only release the milestone once you have personally verified the code’s performance and confirmed it meets your exact requirements with zero errors. I am at my workstation right now. Let’s open chat—I can send you the first sample or progress update in 15 minutes. Best, Shivam Kumar Gupta
₹12,500 INR in 2 days
0.0
0.0

Hello, I can deliver what you need. I understand your project details. I will follow instructions and keep you updated. I am a skilled freelancer with 10+ years of experience in Full Stack Development, API Development and I have completed similar projects. Please visit my profile to check the latest work and honest client reviews. If you like my approach, please connect in chat. Regards, Olusoji
₹12,500 INR in 7 days
0.0
0.0

Hi, I hope you're doing well. I’m interested in supporting agencies as an external engineering resource when additional backend or data capacity is needed. My background includes building and maintaining multi-file software projects across Python, JavaScript, Java, C#, and Go, with practical experience around backend services, REST APIs, databases, automation, and production-oriented application development. I can contribute across API development, PostgreSQL/MongoDB/Redis, data processing and workflow automation, debugging, database optimization, and full-stack implementation. I’m comfortable working independently from an agreed technical scope while also communicating directly with your client when that fits the engagement. My focus would be reliable delivery, maintainable implementation, clear documentation, and smooth integration with your existing team and development process. Starting with a small paid task is a practical way to establish the working relationship. Best regards, Mikhail
₹25,000 INR in 7 days
0.0
0.0

I can deliver 'Back-End and Data Engineering Support' end to end — clean architecture, tests, and deployment. I'll start with a short plan, share progress daily, and hand over production-ready code. Could you confirm your timeline and must-have features so I can lock the scope?
₹18,946.02 INR in 7 days
0.0
0.0

Hi, I’m a .NET/backend developer with experience in C#, ASP.NET, SQL, Web API and database-related development. I’m currently expanding my skills in ASP.NET Core, Azure and full-stack development. I’m interested in supporting agencies on a subcontracting/behind-the-scenes basis, particularly with backend development, APIs, SQL/database work, debugging, automation and technical support. I’m also open to starting with a small paid task so you can evaluate my work before assigning larger projects. I’d be happy to discuss the type of projects you typically handle and where you currently need additional technical capacity. Thanks! Sreekanth
₹16,000 INR in 15 days
0.0
0.0

Hi there! I’m Wonita, a WordPress and WooCommerce expert who isn’t just in the business of completing tasks, but effectively solving problems to help your company grow. Your project aligned with my extensive skill set, which includes Full-Stack WP & PHP Development, Backend Dev, API management, and an array of other related competencies ({"API Development, Backend Development, Full Stack Development, PostgreSQL, SQL"}). I've converted many WordPress sites into true revenue-generating powerhouses with cleaner UI/UX designs and transactional efficiency. From notching up site speeds to ensuring seamless UX through technical SEO, my solutions have consistently driven better rankings and conversions. An additional feather in my cap is strong data analysis skills that can fuel your decision-making processes via effective web scraping. My top priority lies in delivering production-ready work that embodies clear communication and brings tangible results - a trait I know is important to you. Fast communication & a quick turnaround are non-negotiables for me - so let's further discuss how I can assist you? Let me know if you are available for a quick chat! Regards, Wonita
₹25,000 INR in 7 days
0.0
0.0

I saw your post looking for a reliable technical partner to handle backend and data engineering capacity. Your model aligns directly with how I operate: you retain full client ownership, branding, and commercial terms, while I take ownership of the technical scope and delivery behind the scenes. I understand that hiring full-time engineers for fluctuating client pipelines is expensive and risky. I provide scalable, white-label engineering support—whether you need me completely invisible behind your brand or acting as your technical lead in client calls. How I Can Support Your Agency's Pipeline Backend & Architecture: Node.js, Python (Django/FastAPI), REST/GraphQL API design, microservices, authentication systems, and third-party integrations. Databases & Data Engineering: Schema design, query optimization, indexing, and management for PostgreSQL, SQL, MongoDB, and Redis. Data Pipelines & Automation: Python-based ETL pipelines, workflow automation, Web Scraping, and custom script integrations. Technical Documentation & Support: API specs, developer documentation, system diagrams, and post-deployment debugging/maintenance.
₹12,500 INR in 7 days
0.0
0.0

With over 8 years of experience, my skill set aligns perfectly with the backend and data engineering needs outlined in your project description. I specialize in Python, PHP, MySQL, and Postgres among others. Harnessing this expertise, I've developed various systems, including CRMs, ERPs, dashboards and role-based systems - all matching your sought-after capacity support. My recent work on a multi-tenant school ERP for admissions, attendance, fees, online payments, reporting integrated with OCR illustrates my ability to handle complex projects with multiple data dimensions successfully. This resonates well with your requirement for a technical partner who can support/projects involving student assignments and data pipelines management. Furthermore, since I'm not looking for direct end-client work nor do I wish to sell as a subcontractor; instead focusing on delivering agreed technical scopes; our intentions align seamlessly. My practical approach emphasizes communication clarity, protecting existing data 수and delivering in testable milestones. It would be a pleasure to initiate from a smaller paid task ensuring you firsthand observer how qualitatively conducive my work would be to your extended team. Looking forward to hearing from you soon!
₹25,000 INR in 7 days
0.0
0.0

Have more client projects than your current backend/data team can comfortably handle? I can become the extra engineering capacity your agency can rely on—without the cost or commitment of hiring another full-time developer. I’m a Full-Stack Developer experienced in: • Backend & REST API development • Python / FastAPI development & automation • PostgreSQL, MySQL & MongoDB • Database design, queries & optimization • Authentication & third-party API integration • Data processing and workflow automation • Full-stack web application development • Debugging, technical support & documentation I understand your business model: you keep ownership of the client, commercial terms, and relationship, while I take responsibility for the agreed technical scope and deliver reliable work. I can work completely behind the scenes or communicate directly with your technical/client team when required. My focus is clean, maintainable code, secure APIs, reliable database architecture, clear communication, and predictable delivery. I’m happy to start with a small paid task so you can evaluate my quality, communication, and delivery before assigning larger projects. If your agency needs a dependable technical partner who can step in when your team is overloaded, I’d be glad to discuss a long-term collaboration. Best regards, MD. SHAKIL HASAN Full-Stack Developer
₹25,000 INR in 7 days
0.0
0.0

AHMEDABAD, India
Member since Aug 25, 2020
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