Accepting new projects · EU & US time-zone overlap
Highload Solutions designs, builds and operates high-load systems: internal HR, CRM and document platforms, real-time services, web and mobile products, and the automation that runs your business. We deliver turnkey or extend your team with senior engineers.
Every system starts with a load profile and latency budget. Capacity is modelled on paper, verified with load tests, and watched in production with the same numbers.
Load-test target before any production release: three times the expected peak traffic.
Uptime SLA available for systems we operate, backed by 24/7 on-call and runbooks.
Latency budgets are set per endpoint at the architecture stage and tracked on dashboards.
Typical time to start: a dedicated engineer or a team kickoff after the brief is agreed.
We take ownership of the whole lifecycle: architecture, development, QA, infrastructure and support. Pick one service or combine them into a turnkey project.
APIs and services built to scale horizontally under millions of requests, with predictable latency and graceful degradation.
Custom internal platforms instead of off-the-shelf suites: people, clients, documents and approvals in one system shaped to your processes.
Multi-tenant products with roles and permissions, partner APIs and admin tooling, designed to grow from MVP to scale.
iOS and Android apps from one Flutter codebase, with native performance, offline mode, biometrics and push.
Data-heavy interfaces: admin panels, CRMs, operator consoles and customer portals that stay fast with large datasets.
We replace manual work and spreadsheets with workflow systems that connect your ERP, CRM, accounting and support tools.
WebSocket gateways, pub/sub, live feeds, chat and notifications that fan out to hundreds of thousands of connections.
We find where your system breaks and why, then fix it: profiling, load testing, re-architecture and legacy upgrades.
Infrastructure as code, CI/CD, observability and on-call. We run what we build, or hand it over with runbooks.
HR, CRM and document systems built around how your company actually works, instead of bending your processes to an off-the-shelf tool. One platform, your data, your rules, connected to everything you already use.
SSO, role-based and field-level permissions, separate views per department.
Every change logged with who, when and what. Full history per record and document.
GDPR-ready data handling, encryption at rest, hosting in your cloud or the EU.
ERP, accounting, mail, Slack or Teams, Google Workspace via APIs and webhooks.
We do not force one stack onto every problem. Concurrency-heavy cores, lean services, interfaces and mobile clients each get the tool that fits.
The runtime behind telecom switches and messaging at global scale. Millions of lightweight processes, supervision trees that restart failures in microseconds, and hot code upgrades without downtime.
init([]) -> %% restart a crashed worker, keep the rest running Router = #{id => approval_router, start => {approval_router, start_link, []}, restart => permanent}, {ok, {#{strategy => one_for_one, intensity => 10, period => 1}, [Router]}}.
Compiled binaries, low memory footprint and first-class concurrency. Our default for gateways, high-throughput APIs, stream consumers and infrastructure tooling.
func (s *Server) Approve(ctx context.Context, r *pb.ApproveRequest) (*pb.ApproveReply, error) { // hard latency budget for one workflow step ctx, cancel := context.WithTimeout(ctx, 40*time.Millisecond) defer cancel() return s.workflow.Advance(ctx, r.DocumentId, r.ApproverId, r.IdemKey) }
Non-blocking I/O and one language across front and back end. Ideal for BFF layers, WebSocket hubs, integration services and fast product iteration with TypeScript.
wss.on('connection', (socket, req) => { const user = authenticate(req); const sub = bus.subscribe(user.channels); sub.on('event', (e) => socket.send(encode(e))); socket.on('close', () => sub.close()); });
PHP 8 with strict types, queues and long-running workers is a fast, mature choice for back-offices, e-commerce and internal tools. We also modernise legacy PHP without stopping the business.
final class GenerateContract implements ShouldQueue { public function handle(Documents $docs): void { // render from template, store a version, start approval $docs->generate($this->employeeId, 'employment') ->startApproval(); } }
Operator consoles, dashboards and customer portals with thousands of rows, live updates and complex permissions. We build on a design system so the product stays consistent as it grows.
const { data, isFetching } = useQuery({ queryKey: ['employees', filters], queryFn: () => api.employees(filters), refetchInterval: 2_000, placeholderData: keepPreviousData, });
iOS, Android, web and desktop from a single Dart codebase with native-grade rendering. Faster delivery, one team, one release train, and native modules where the platform demands it.
class LeaveBalanceCard extends ConsumerWidget { @override Widget build(BuildContext context, WidgetRef ref) { final balance = ref.watch(leaveBalanceProvider); return balance.when( data: (b) => LeaveBalanceView(b), loading: () => const Skeleton(), error: (e, _) => ErrorView(e), ); } }
PostgreSQL, MySQL, ClickHouse, Redis, MongoDB, Elasticsearch
Kafka, RabbitMQ, NATS, Redis Streams
Kubernetes, Docker, Terraform, AWS, GCP, Hetzner, bare metal
Prometheus, Grafana, OpenTelemetry, Loki, Sentry
We know the regulatory and operational constraints of these sectors, so discovery is faster and the architecture fits from the first sprint.
Employee portals, ATS, onboarding, performance reviews and document workflows.
Real-time odds, bonus engines, back-office and integrations with providers.
SMS/voice routing, signalling and subscriber management.
Catalogues, search, order management and peak-sale readiness.
Dispatch, tracking, driver apps and warehouse automation.
Bidding, attribution, tracking pipelines and campaign analytics.
Multi-tenant platforms, partner APIs and integrations.
Workflow automation, integration hubs, reporting and AI-assisted operations.
Choose how much of the delivery you want us to own. You can start with one model and switch as the product matures.
We own delivery end to end: discovery, architecture, build, QA, launch and support. You get a working product against agreed milestones.
A cross-functional team working only on your product. We handle hiring, retention and delivery management; you set priorities.
Vetted engineers join your processes, tools and stand-ups. Scale capacity up or down without the hiring overhead.
A fixed-scope review of an existing system: load tests, code and infrastructure analysis, and a prioritised remediation plan.
| Turnkey | Dedicated team | Outstaffing | Audit | |
|---|---|---|---|---|
| Scope | Defined product or milestones | Evolving roadmap | Your backlog | Existing system |
| Responsibility | Result and deadlines | Team velocity and quality | Engineer performance | Findings and plan |
| Team | PM, architect, engineers, QA, DevOps | 3–15 people, any mix | 1+ engineers | Architect + 1–2 engineers |
| Start | After discovery, 1–2 weeks | 2–4 weeks | From 10 days | Within 1 week |
| Reporting | Milestone demos, weekly status | Sprint demos, KPIs | Your process | Final report and workshop |
Each stage ends with something you can review and approve. No surprises at launch, because the load and failure scenarios were tested weeks earlier.
Business goals, users, integrations, expected load and constraints. We challenge the scope where it saves you money.
Output: scope, estimate, roadmap
System design, capacity model, technology choice, SLOs and security model, documented and reviewed with your team.
Output: design doc, ADRs
Iterative delivery with demos every sprint, code review, automated tests and CI/CD from the first commit.
Output: working increments
Load tests at three times expected peak, chaos scenarios, dependency failures and penetration testing.
Output: test reports, fixes
Canary or blue-green release, monitoring and alerting in place, runbooks written, team on call for the launch window.
Output: production release
SLA-backed support, incident response, performance tuning and the next items on your roadmap.
Output: uptime, monthly reports
Four system profiles we are set up to deliver, with the stack we would choose and the design targets we would commit to. Detailed case studies are available under NDA.
Employee records, recruiting pipeline, onboarding, time off, performance reviews and a document module with templates, approvals and e-signature.
Odds feed ingestion, bet acceptance and live push to web and mobile clients.
Replaces spreadsheets and email chains with approval workflows, ERP/CRM sync, document intake and management reporting.
Driver and technician app with offline mode, dispatcher console, live tracking and customer notifications.
Figures are design targets for systems of this class, not results of a specific client project.
Clear ownership, measurable quality and no lock-in. These terms are part of every contract.
Full IP transfer, your repositories, your cloud accounts. Documentation and handover are included, not extra.
Architects and senior engineers lead every project. You talk to the people who write the code.
SLOs, load-test reports and delivery metrics are shared with you from the first sprint.
NDA before the first call, least-privilege access, secure SDLC, and architecture that keeps your compliance scope small.
Our teams work on European time with daily overlap for US East Coast clients. English is our working language.
Every estimate is broken down by feature and role. Changes in scope are priced before they are built.
Something else on your mind? Send it with the form below and an engineer will answer.
Discovery can start within a week of the first call. Dedicated engineers usually join your team in about 10 working days; a full dedicated team takes 2–4 weeks to assemble.
Yes. All code, designs and documentation are transferred to you under the contract. We work in your repositories and cloud accounts whenever possible, so there is nothing to hand over at the end.
Both. Fixed price works when the scope is clear, usually after discovery. Time and materials, or a monthly team fee, suits evolving products. Many clients start with a fixed-price discovery and then move to a dedicated team.
Yes. We start with a technical audit: code, architecture, infrastructure and load behaviour. You get a written report with risks and a prioritised plan, then we stabilise the system before adding features.
We sign an NDA before any detailed discussion. Access to your systems is least-privilege and logged, secrets stay in your vault, and we follow secure SDLC practices including dependency scanning and code review.
Our engineers work on Central and Eastern European time, with daily overlap for UK, EU and US East Coast teams. All communication and documentation are in English.
Yes. We offer SLA-backed support with 24/7 on-call for production incidents, plus a monthly retainer for improvements, monitoring and performance tuning.
Share a short brief. An engineer, not a salesperson, reviews it and comes back with questions, a rough estimate range and the next step.