Can you work with our existing backend?

Yes. We review the stack and relevant code before confirming the scope. We can extend an existing system without assuming it needs to be rebuilt.

Can you work alongside our internal developers?

Yes. We can take responsibility for an agreed component or contribute within your team’s development and review process.

Who chooses the technology stack?

We agree on this with you. For existing systems, compatibility and your team’s standards guide the decision. For new products, we recommend an approach and explain the tradeoffs.

Are hosting and third-party services included in the development fee?

Hosting, paid APIs, software licences and service accounts are normally paid for directly by the client. We identify any expected external costs when discussing the scope.

Services

Backend Development & API Integration

We build backends for new products, extend existing systems, and connect applications with external services. Our small development team can take ownership of a defined task or work alongside your engineers.

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Where We Can Help

Extend an existing product

Add features, update business logic, or build the APIs your mobile and web applications need. We start by reviewing the existing system and agreeing on the scope.

Connect your systems

Integrate payment providers, CRMs, AI services and other external platforms. We account for authentication, data mapping, errors and the workflows around each integration.

Build a new backend

Develop the backend, database and administrative tools for a new product, from initial requirements through deployment.

Support your development team

Bring us in for a specific component, integration or development phase. We can work within your technical requirements, repository and review process.

Working With Your Product and Team

For an existing product, we first review the relevant code, data model and integrations. We discuss what needs to change, what must remain compatible, and how the work will be tested and released.

For a new product, we help define the architecture and choose technologies based on the requirements, expected workload and long-term maintenance needs.

If your team already has an established stack and technical standards, we assess how we can work within them. When we recommend a different approach, we explain the benefits, limitations and impact before implementation.

What's Included

Backend Features & Business Logic

Implement workflows, permissions and product functionality behind your mobile and web applications.

API Development & Integration

Build APIs for your applications and integrate external services with clear contracts and error handling.

Databases & Data Flows

Design or extend data models and review queries and data flows affected by the new functionality.

Admin Panels & Internal Tools

Give your team the tools to manage users, content and day-to-day operations.

Technologies We Use

Node.jsTypeScriptPostgreSQLGraphQLRedisDockerNext.jsPrisma

Start With One Backend Task

You do not need to commission a complete platform. We can start with one integration, a backend feature or a focused review of an existing system.

Before starting, we agree on the scope, price, dependencies and acceptance criteria. For a review, the outcome is a technical assessment and implementation options. For development, it is the agreed functionality delivered for testing, with the documentation needed for handover.

Discuss a First Backend Task

Our Development Process

Understand the Task

Review your goals, existing system and constraints. Identify dependencies and questions that affect the scope.

Agree on the Approach

Define deliverables, technical decisions, acceptance criteria and an estimate.

Develop & Review

Implement the work in agreed stages, with progress updates and code review.

Test & Release

Test the agreed workflows and integrations, then coordinate deployment with your team.

Handover & Next Steps

Provide the documentation needed to maintain the delivered work and agree on any further support.

Our first collaboration with Sparkler Soft and Sergey on Azarium, a real estate investment app with crypto payments, was an excellent experience. The team successfully delivered the entire product from concept to launch, including two mobile applications, an admin panel, backend infrastructure, and AWS DevOps. Throughout the project, they demonstrated strong technical expertise, a highly professional approach, and consistent attention to quality. The execution was excellent, and the final outcome met our expectations in every respect. Communication was seamless, efficient, and maintained at the highest standard throughout the engagement. We highly value this cooperation and confidently recommend Sparkler Soft and Sergey as a reliable and capable technology partner.
Sergis TimofejevsFounder, Payca
Direct client feedback · June 2026

Frequently Asked Questions

Yes. You do not need to commission a complete product. We can start with a defined feature, integration or improvement after reviewing its requirements and dependencies.

Have a Backend Task in Mind?

Tell us what needs to change or connect. If available, include your current stack, API documentation, a short description of the workflow and any technical constraints. We’ll review the information and discuss a defined first step. An NDA is available before sharing confidential materials.

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