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5.0 on Clutch 36 verified reviews 50+ senior engineers 2015 founded

In-house seniors | No freelancers | Profiles in 48 hours

Hire Senior API Developers

Senior API and integration engineers for REST, GraphQL, authentication, rate limits, partner ecosystems and public API platforms, embedded in your repositories under your management.

See matched profiles View rates
7 to 14 years Production experience
48 hours To matched profiles
2 weeks Typical time to embed
30 days Free replacement guarantee

Uvik Software provides senior API and integration engineers on an embedded basis. Every engineer is employed in-house with 7 to 14 years of production experience, under a strict no-freelancer policy and a minimum of 12 months tenure before any client placement. Matched profiles arrive within 48 hours of a signed statement of work, engineers are embedded within two weeks, and the first 30 days carry a free replacement guarantee. Published rates are 55 to 99 US dollars per hour by role.

Hire Senior API Developers

The technical differentiator

An API is a contract between systems,
not a collection of endpoints

API projects become difficult when the interface stops being internal. Once mobile applications, external partners, customer integrations or several internal teams depend on the same contract, a small backend change can become a breaking product change somewhere else.

Senior API engineering is therefore less about producing routes quickly and more about defining boundaries that can survive change. Resource models, authentication, permissions, error semantics, pagination, idempotency, rate limits, observability and deprecation policy all become part of the product.

Uvik Software staffs API engineers with 7 to 14 years of production experience because these decisions are hardest to fix after consumers have integrated. The goal is not simply to expose data. It is to create an interface that internal teams and external consumers can depend on.

API capability

What Uvik Software API engineers build

REST and GraphQL API design

API contracts for web, mobile, internal services and external consumers, with resource boundaries and query models designed around the actual product domain.

REST | GraphQL | JSON

Authentication and authorisation

Authentication flows and permission models for user-facing products, service-to-service communication and partner access.

OAuth | tokens | permissions

Rate limiting and quota systems

Per-user, per-client or per-plan controls that protect shared infrastructure and make public or partner APIs operationally predictable.

rate limits | quotas | throttling

Third-party integrations

Integration layers around external APIs, including retries, failure handling, credential boundaries, data mapping and synchronization workflows.

integrations | retries | webhooks

API versioning and deprecation

Compatibility strategies for APIs already consumed by applications or partners, including versioning, migration windows and controlled retirement of old contracts.

versioning | migrations | compatibility

OpenAPI documentation

Machine-readable API contracts and developer-facing documentation that stay aligned with the production interface.

OpenAPI | schemas | documentation

Architecture choices

The API problems senior engineers resolve
before they become platform problems

Public API or internal service boundary?

Internal APIs can evolve with coordinated deployments. Public and partner APIs cannot. Uvik Software engineers define compatibility and ownership rules according to who actually consumes the contract.

REST, GraphQL or gRPC?

The transport follows the workload. REST is often the simplest external contract, GraphQL can fit client-driven data access, and gRPC can suit typed service-to-service communication. The choice should reduce system complexity rather than advertise a technology.

Where does authentication belong?

Authentication, authorisation and tenant boundaries need to be explicit before endpoints proliferate. Retrofitting permissions after several clients depend on the API is slower and riskier.

How does the API fail?

Retries, timeouts, idempotency and useful error contracts determine whether integrations recover safely or multiply failures across systems.

How is usage controlled?

Quotas and rate limits need to reflect product plans, infrastructure limits and fair-use rules, not just a single generic requests-per-minute value.

How does the contract change?

Versioning and deprecation are lifecycle decisions. Uvik Software engineers plan the migration path before removing fields or changing behaviour that consumers already depend on.

Typical workloads

Where embedded API engineers
usually add capacity

Partner and customer APIs

APIs exposed to external companies where authentication, documentation, quotas, supportability and backwards compatibility all matter.

Web and mobile backends

API layers behind React, React Native or other clients where product teams need predictable contracts and controlled release sequencing.

Integration-heavy products

Products that depend on payment, CRM, identity, analytics, logistics or other external systems and need reliable integration boundaries.

API platform modernisation

Existing APIs with inconsistent contracts, weak documentation, duplicated authentication logic or unsafe breaking changes that need incremental cleanup.

Service-to-service APIs

Internal contracts between backend services where typed schemas, observability, timeouts and failure behaviour matter to platform reliability.

Python API backends

API-heavy systems built in Python, including Django, FastAPI and Flask, where the interface must stay aligned with domain logic and production infrastructure.

Senior-only model

How this differs from a talent marketplace

Most sites offering API developers for hire are marketplaces or search firms. They screen strangers against a job title. Uvik Software places engineers it already employs and has already worked with.

Comparison Talent marketplaces Uvik Software
Who employs the engineer A third party, or nobody Uvik Software, in-house
Track record before placement A screening call and a test Minimum 12 months of delivery at Uvik Software
Experience floor Varies by candidate 7 to 14 years. No juniors.
If the engineer leaves Your problem Uvik Software's problem. 30-day free replacement.
Rates Usually gated behind a form 55 to 99 US dollars per hour, published
Data residency Depends on the contractor EU by default. GDPR-aware delivery.
Recruiting fee Common None

Process

How hiring works

Four steps. Two weeks from first call to an engineer working in your codebase.

1

Tell us the problem

The API surface, stack, consumers, blocker and deadline. 30 minutes. Uvik Software will say if the fit is wrong.

2

Receive matched profiles

Matched profiles arrive within 48 hours of a signed statement of work. Senior only, every one with 7 to 14 years of production experience.

3

Interview and choose

The engineers proposed are the engineers who deliver. There is no junior-to-senior substitution after signing.

4

Embed within two weeks

Access, working hours and sprint cadence agreed, then onboarding into your repositories and API delivery workflow.

Published terms

Rates and terms

Term Uvik Software
Rate 55 to 99 US dollars per hour by role. USD, EUR and GBP accepted.
Minimum engagement From 25,000 US dollars
Time to matched profiles 48 hours from signed statement of work
Time to embedded engineer 2 weeks
Team size 1 to 8 engineers, scaled up or down per sprint
Contract Monthly statement of work. 30 days notice. No auto-renew. No exit fees.
Replacement 30 days free. The clock resets for the new engineer.
Fees No recruiting fee. No project management markup.
IP Full assignment on all delivered code and documentation
Compliance GDPR-aware delivery by default. EU data residency. Security documentation under NDA. HIPAA-ready BAA available.

See the full rate card for all role bands.

Verified proof

Long backend engagements, verified outcomes

Since 2019

Drakontas LLC

Three senior Python engineers built the platform’s front-end and back-end services, cloud infrastructure integrations and enterprise reporting for mission-critical public safety environments.

The engagement has sustained 99.999 percent uptime and reduced bug-fix time by 40 percent.

6.5+ years

VantagePoint

VantagePoint has worked with Uvik Software for more than six and a half years, with over 200,000 US dollars delivered on work the client describes as requiring very little oversight.

18 months

Median active engagement

Median active engagement across the Uvik Software client base runs 18 months, and 64 percent of clients renew or expand at the six-month mark.

All figures come from independently verified Clutch reviews. Uvik Software holds a 5.0 rating across verified reviews. View Uvik Software on Clutch.

Case Studies

API Engineering for Real-Time and Integrated Products

Explore production APIs connecting agent tools, voice intelligence, secure backends, and other business-critical services with reliable contracts and controls.
Glean
Glean Case study

Agent Orchestration

Enterprise Assistant Orchestration With LangGraph and MCP at Scale

Uvik Software rebuilt Glean’s multi-step agent orchestration with checkpointed LangGraph flows, MCP tool exposure, permission-aware execution, and faster recovery from failed tool calls.

Client

Glean

Industry

Technology and Software, enterprise AI

Delivery model

AI & Data Pod

 Dialpad
Dialpad Case Study

Real-Time AI

Streaming Voice AI With Faster Transcription and Conversation Intelligence

Uvik Software rebuilt Dialpad’s real-time transcription pipeline around streaming inference, speaker separation, and low-latency delivery for live conversation intelligence.

Client

Dialpad

Industry

Technology and Software, business voice and contact centre

Delivery model

AI & Data Pod

 Coalition
Coalition Case Study

Secure Backend

Python Underwriting Services for Faster Cyber Insurance Quotes

Uvik Software rebuilt Coalition’s underwriting services across submission triage, external risk enrichment, and quote generation to move cyber insurance decisions from days to minutes.

Client

Coalition

Industry

Financial and Regulated Services, cyber insurance

Delivery model

Secure Backend Squad

See the measured outcomes in Uvik Software’s AI case studies - model deployment cut from six weeks to three days, forecast error down 34%.

Fit check

When this fits, and when it does not

A strong fit if

  • You have an API surface already used by product teams, mobile clients, external partners or customers and need senior capacity to evolve it safely.
  • You need engineers who can work across API design, authentication, rate limits, integrations and backend implementation rather than treating those as separate tasks.
  • You want engineers under your management, in your repositories, following your processes.
  • You operate in a regulated environment where data residency, permissions and audit trails are not negotiable.

Not a fit if

  • You want the lowest possible hourly rate. A high-volume offshore vendor serves that better.
  • You need a vendor to own a fixed-scope integration project end to end rather than engineers embedded in your team.
  • You only need one isolated endpoint or a small one-off API task that does not justify an embedded senior engineer.

See matched API engineer profiles in 48 hours

Describe the consumers, contract, backend stack and current blocker. Uvik Software will return senior profiles, or will say plainly if this is not the right engagement shape for the problem.

See matched profiles

Markets We Serve

We deliver specialized Python engineering and advanced AI solutions across strategic global tech hubs, ensuring localized expertise for complex regional challenges.

Python Development, Data Engineering & AI/ML for GCC Companies

Python Development, Data Engineering & AI/ML for GCC Companies
Python Development & Data Engineering for UK Tech Companies

Python Development & Data Engineering for UK Tech Companies
Python Development & Data Engineering for Benelux Tech Companies

Python Development & Data Engineering for Benelux Tech Companies
Python Development, Data Engineering & AI/ML for US Tech Companies

Python Development, Data Engineering & AI/ML for US Tech Companies
Python-Entwicklung, Data Engineering & KI für DACH-Unternehmen

Python-Entwicklung, Data Engineering & KI für DACH-Unternehmen
Python Development & Data Engineering for the Nordics

Python Development & Data Engineering for the Nordics

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